[Zope-dev] RE: Additional Quoting; Exposing Auxiliary Tag Functions via _
Dieter Maurer writes: The existing "quote features" name the context for which quoting is needed. The context determines what needs to be quoted and how quoting has to be done. Your proposal does not state the context but only the how. Otherwise, I would think such an extension would be good. You are right here. I just came up with "slash_quote" off the top of my head. "string_quote" is a good language-neutral name I think that is similar in spirit to the present format options. Thus, I propose: 1. new quoting directive "string_quote" quoting Python strings i.e. ", ' and \ are quoted. This would work for Javascript (and other languages with C-like quotation and string literals), too. 2. all auxiliary functions for DTML tags, especially quoting, should be available via the namespace. To avaid namespace pollution, they may go into a separate module, say 'aux'. E.g. I would like to use quoting, formatting etc. inside DTML embedded Python expressions in a form like that: dtml-var "... _.aux.fmt(x,'%m/%d/%Y')..." and dtml-var " _.aux.sql_quote(x)..." This idea has merit, and extends the usefulness of these options to parts of an expression rather than just the whole thing. I think calling the module 'aux' might not be the best for code readability sake though. Perhaps it should just be called fmt or format. Perhaps like so: dtml-var "... _.fmt.expr(x, '%.2f') ..." and dtml-var "... _.fmt.string_quote(x) ..." newbie format methods could be added too (Feature creep alert!) like: dtml-var "... _.fmt.currency(x) ..." in place of the first one. ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] Z SQL Method Patch
In debugging some Z SQL methods I found it quite hard to diagnose certain errors returned by the database backend because Zope doesn't return the SQL sent to the server, instead it returns "Could not render the query template!" which is not really true for this case. In looking at the source code of DA.py (lib/python/Shared/DC/ZRDB), and I think I found a simple solution: in manage_test insert the following indented after line 343 (except:) try: src=self(REQUEST, src__=1) except: pass This re-renders the query template if possible without sending it to the backend and returns the SQL in src. The result is your backend error message followed by the SQL generated. This should really save time debugging any dynamic Z SQL methods. It was moderately tested on Zope 2.2.1/PostgreSQL 7 via PyGreSQLDA. It should not be database dependant though. Enjoy. -Casey Duncan ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] ZCatalog + ZCatalog
I am making it my mission to enhance the beast that is ZCatalog. This is the
first of many improvements I hope to make to it as time goes on.
DISCLAIMER
This patch has only been moderately tested, and all side affects are not
known. I am submitting it here for review before adding it to the collector.
You take full risk in using this patch on your installation.
/DISCLAIMER
OK, what this patch does is allow you to concatenate ZCatalog result
sequences (Lazy sequences) without loading the whole enchilada into memory.
It also dispenses with the funky workaround/hack notation that currently
exists (although it still works AFAIK). Once this patch is in place, you
will be able to write code as follows:
dtml-in "Catalog(args)+Catalog(other args)+..."
...
/dtml-in
or even:
dtml-in "Catalog1(args)+Catalog2(args)"
...
/dtml-in
The latter might be useful for dealing with ZCatalog scaling issues, or
combining completely objects from entirely different locations.
The patch changes Lazy.py and Catalog.py (very slightly). These files can be
found in your {Zopedir}/lib/python/Products/ZCatalog directory.
Add the following code into the Lazy class definition in Lazy.py. I added it
at the end following line 118 (slice=__getslice__):
def __add__(self,other):
# Concatenate result sequences together while remaining lazy
# Make sure the object we are concating is also Lazy
try:
if other.__class__.__bases__[0].__name__ != 'Lazy':
raise TypeError, """Cannot concatenate objects. Both
must be lazy result sequences (ie ZCatalog results)"""
except:
raise TypeError, """Cannot concatenate objects. Both must be
lazy result sequences (ie ZCatalog results)"""
if self.__class__.__name__ == 'LazyCat':
# Don't nest LazyCat objects unnecessarily
if hasattr(self,'_seq'):
seq = self._seq
else:
seq = [self._data]
else:
seq = [self]
if other.__class__.__name__ == 'LazyCat':
# Don't nest LazyCat objects unnecessarily
if hasattr(other,'_seq'):
seq = seq + other._seq
else:
seq = seq + [other._data]
else:
seq = seq + [other]
return LazyCat(seq)
The change to Catalog.py is a single line as follows:
Change line 603 (if not r: return r) to:
if not r: return LazyCat(r)
The change to Catalog.py prevents empty catalog search results from throwing
an exception when concatenating it with a non-empty search result. This is
the only part that I see as a risk to break existing code. If you, for
whatever reason, relied on a ZCatalog returning an empty list ([]) when the
search came up empty, your code will no longer work. Here is an example:
dtml-let result="Catalog(args)"
dtml-if "result == []"--- This no longer works
...
dtml-else
...
/dtml-if
/dtml-let
However this still does:
dtml-let result="Catalog(args)"
dtml-if result
...
/dtml-if
/dtml-let
And this does what you expect of it when both searches come up empty:
dtml-in "Catalog(args)+Catalog(other args)"
...
dtml-else
...
/dtml-in
IMHO this is a very minor side affect, and well worth the gain.
Please scrutinize this patch and pick it apart and let me know what works
and what doesn't or if I've missed something.
Enjoy,
Casey Duncan
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RE: [Zope-dev] ACL users and Packing the DB
Keith Larsen Wrote: I have found a way to kill the user via a link or straight html url http://username:[EMAIL PROTECTED]:8080/testfolder?ids:list=acl_users; manage_delObjects:method=Delete now if I can get my lynx to run it ok I will be set. ( lynx does not like it so far but works fine from a browser url ) If Lynx isn't working, try the -force_html switch. I think Lynx gets confused by the fact that the URL does not point to a .htm or .html file. -Casey D. ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
RE: [Zope-dev] calling dtml method with same name up the hierarchy.
The following should work in your nested standard_html_footer to call the higher level one without infinite recursion: dtml-with "PARENTS[1]" dtml-var standard_html_footer /dtml-with hth, Casey D. ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] JPython Product?
I have been toying with the idea of creating a Zope product for creating JPython applets within Zope. I thought this might be a way to increase the capabilities of Zope on the client-side while remaining firmly grounded in Python and simultaneously giving me an excuse to play with JPython and maybe create a useful Zope product too. I wanted to throw this out to the group to see if others thought this was a worthwhile capability. The basic idea would be to write JPython scripts and applets in Zope either via the web or otherwise and automagically "compile" them into transparent .jar files that are served to the client on request. Sounds so simple! Right?? Somehow I doubt it will be, but... From what I see no one has done this so I figure at least one of following is true: 1. Nobody thought of it or felt compelled to act on the thought. 2. Its gonna be hard to do. 3. Somebody else already did it and I don't know about it. 4. The idea blows. Any thoughts on this idea, + or - are appreciated. -Casey D. ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
RE: [Zope-dev] JPython Product?
Steve: That is good to know, being a Mac fan myself. I'll have to play with and test the different browsers on the client side as well as server-side jdks. From what I have learned so far on the server end, the project seems reasonably feasible. I think the interesting part will be creating the precise dividing line between the JPython and CPython worlds. I doubt much JPython will exist in the product excepting some "glue" to get Zope/CPython to interact with it in a robust way. That will probably be the fun part. Thanks for the comments, Casey D. -Original Message- From: Steve Spicklemire [mailto:[EMAIL PROTECTED]] Sent: Wednesday, November 08, 2000 5:33 AM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: Re: [Zope-dev] JPython Product? Hi Casey, I think this is a fine idea. The main thing that keeps me from doing it is that JPython doesn't work on Netscape (Mac) and so (at this point at least) I can't use it, unless I have a context where I can insist that users use a particular browser. The other annoyance is the long download time for the JPython implementation The other annoyance is the general flakiness of Java VMs out there But.. I think the concept is a good one.. and once the JPython implementation is cached it should be pretty fast. Then you just have to worry about all the JVM bugs. ;-) good luck! -steve ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] objectValues performance
Brett Carter wrote: I have a folder with greater than 5000 ZClass instances in it. It takes 5mins to do an objectValues for every object in the folder - is there a higher perfomance call I could make? -Brett Standard folder performance degrades pretty quickly once you get a lot of objects in it. There are two solutions to this: Subdivide your objects into multiple folders. Use a BTreeFolder which should be much faster. You can download the BTreeFolder product here: http://www.zope.org/Members/hathawsh/BTreeFolder/ hth, Casey Duncan ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] objectValues performance
Brett Carter wrote: Ok, I'll bite. Why doesn't the standard folder scale? Seems like a design flaw to me - why doesn't the default folder use catalogs or BTrees? -Brett AFAIK a standard folder uses a linear search when you request an object from it (ala Python dictionaries, someone please correct me if I'm wrong). This works great except that the search time grows linearly (by n) as you add objects. The BTreeFolder as the name implies creates a binary tree of the objects where the search time grows by only log n. For small folders the search time difference is minimal to non-existant, but as n increases the BTreeFolder search time increases minimally. B-trees are fairly complex entities to manage and for the vast majority of folders are total overkill. That is why standard folders work the way they do, the implementation is simple and efficient for 99.9% of applications. Your case is fairly atypical of most Zope folders. Perhaps a future implementation of Zope folders could automatically use a b-tree after a certain threshold is reached, for now you must explicitly select them. Andy's idea of using objectIds instead of objectValues is also a good one which will save significant amounts of memory. You can always access each object individually via id if you need to. Using a ZCatalog could also help in this because you can query the objects without loading them into memory and the returned result does not load the objects themselves, only the meta-data and only once a result item is explicitly accessed (By using so-called lazy sequences). However the catalog will not speed up your actual object access time unless you divide them up amongst several folders or use a BTreeFolder. The latter being a simpler solution from a design standpoint. Good luck! Casey Duncan ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] file references
Dan Sashko wrote:
~~~sorry for double post if you get it twice... I think I sent it first from
the wrong email address
is there a way in zope to reference a document on a server without having it
to be in the
zope database???
if I want to display say a microsoft document, with content type of
application/msword so that
the Internet explorer displays it as formated word document and so that it
can be saved back to server???
or is there other ways of accomplishing the same thing?
thank you for any help
Dan S.
You can view access files in a local file system through Zope using the
LocalFS product. You should also be able to access shares mounted from a
remote server through this as well (nfs, smb, etc). However this will
not let you save the document back once it is opened. For this you could
perhaps use WebDAV ("Web Folders" in MS-speak), although I am unsure
whether LocalFS supports this. My guess would be that it does. You will
need IE5/Office 2000 for the WebDAV support on the client side, Zope
already has the server-side support built in.
Another perhaps better option would be to simply share the files via smb
and link to them from the Zope pages via a "file://" link that opens
them directly off the file server rather than through Zope. This would
prevent you from having the jerry-rig Zope into being a file server.
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[Zope-dev] zPoPyDA and DB Transactions
I had been using Postgres with the zPyGreSQLDA and recently switched to zPoPyDA for a new project. I noticed that zPoPyDA does not seem to implicitly wrap each zSQL method in a database transaction as zPyGreSQLDA did. Reading the code for zPoPyDA seems to confirm this. Is this behavior by design or a bug or am I missing something? -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Catalog class--does it support boolean queries?
Marc Conley wrote:
I am working on a project which requires the use of the Catalog class
(versus ZCatalog) for
indexing and querying. I have basic full text indexing and querying working
correctly but
boolean queries seem not to work. Should boolean queries work using Catalog
or is it
necessary to use ZCatalog instead to get that functionality?
This is how I am submitting the query to the Catalog object:
results = sdb.cat({"content" : query})
where sdb is a ZODB, cat is the catalog object, and content is the name of
the full-text index. query is
the query the user typed, which could be
"(apples and oranges) or plums"
(without the quotes) for instance. Thanks in advance for any assistance
anyone can provide on this question.
You should be able to do what you want using just catalog.
If your example query is an example of something you are really using,
try it without parens.
e.g. "apples and oranges or plums"
AFAIK grouping in query strings is not supported.
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Re: [Zope-dev] Search Interface [was 'case insensitive sorts']
Chris Withers wrote: Rik Hoekstra wrote: Hm, reading this... just a loose comment. In light of the awkward search interface of ZCatalogs, would it be a good idea to make a search interface for ZCatalog ZPatterns based? T I'm starting to feel like a stuck record on this, but lots of people seem to be asking for it in their own way... ;-) If the ZSearch Interface was properly documented and fully featured (ie defined how you search an object that supports the interface, and how you would index objects using that interface) then we wouldn't be stuck with the ZCatalog. It would enable people to write SQLIndexers, ZPatterns-based Catalogs and anything else they want, all of which would be freely interchangeable with the ZCatalog. Comments? Chris I would love to see this happen. Sounds like a fishbowl project to me! -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Catalog class--does it support boolean queries?
Chris Withers wrote:
Marc Conley wrote:
boolean queries seem not to work. Should boolean queries work using Catalog
or is it
necessary to use ZCatalog instead to get that functionality?
I'm not sure boolean queries work in either. If they do, anyone know
where their syntax is documented?
cheers,
Chris
From digging around in the code, here is the general text index query
syntax (if you can call it that):
"one two three" and "one or two or three" are equivilant, multiple words
are "orified" by default. Hits are scored according to the number of
words matched, so by default, objects matching all words will be first
in the results.
"one and two and three" and ['one','two','three'] will return only
objects containing all three words.
"one and not two" ('andnot' also works) works as advertised.
Wildcard characters "*" and "?" can be used to match multiple word
forms. e.g. a query for "great*" would match "great", "greats",
"greatest", "greatly", etc.
There is also a mentioned support for "near" searching in the code using
a '...' operator, although in practice this does not work 8^(. It seems
as though all non-aphanumerics are stripped from the query somewhere.
IMHO this should probably just use the word "near" as an operator
anyway.
For those interested, the indexing/searching code lives in {Zope
Dir}/lib/python/SearchIndex.
In doing some more digging in UnTextIndex.py there I do see support for
parens and quoted phases, although in practice they do not work. If I
find time I will delve into this further.
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Re: [Zope-dev] Catalog class--does it support boolean queries?
Chris Withers wrote: Casey Duncan wrote: In doing some more digging in UnTextIndex.py there I do see support for parens and quoted phases, although in practice they do not work. If I find time I will delve into this further. Cool, if you document it anywhere, please let us know... Chris 2.3.0a1 seems to be a bit more friendly toward near, and parens and quoted phrase searches. I will be looking into this further. Perhaps a howto is in order? -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] RE: objectIds accessiblilty and a proposal
Paul Erickson wrote: If it is an issue for XML-RPC users, maybe there should be a "Traversable" permission on Folder objects that could default to not allowing web-traversal, but allowing it to be enabled if desired. Would this affect FTP access to folders? -Paul I agree. That would temper any grumbling and solve the problem (although not the problem of the ever growing security list). -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] zPoPy oid issues
On my Zope instance (2.2.4) using zPoPyDA (0.7) and PoPy (1.4.1) any select query trying to return an oid from postgres (7.0.3) crashes Zope. i.e. SELECT oid FROM foo; After doing some digging around, trying to do the same query directly in Python using the PoPy module results in a seg fault. So the problem would seem to be with PoPy and not the DA. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] Re: zPoPy oid issues
[EMAIL PROTECTED] wrote: Hi, The problem is inside postgresql ! They use OID type for LOB and for table'oid, PoPy (to simplify LOB handling) detect automagically LOB and returns them to the end user who can handle them easily. I study the postgresql sources on the CVS and they haven't resolv this problem. We have to write this in the BUGS file we plan to add soon in our release. If you have any proposals to resolv this BIG problem ? I'm sorry for this but postgresql types are very confused. Best regards. So, if I understand correctly, oids are handled as large binary objects? From what I see, oids are 6 bytes in length (using SELECT length(oid)...) since they have a max value of 4 billion, that leads me to believe that only 4 bytes are used as a numeric value. So, they are really just a glorified int4 with 2 extra bytes tacked on for some reason. Anyhow, why exactly does this cause PoPy to crash? I can surely work around this problem for now, but I can certainly see cases where returning an oid would be an essential function, especially if you are working on a generalized database tool. I am certainly willing to help get this fixed. Any additional information you (or anybody) has regarding this would be greatly appreciated. Thanks for your help. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] Re: zPoPy oid issues
Actually I found that the Postgres length function returns the string length (i.e. number of digits) of a number, so my previous message was wrong about the byte length of an oid. AFAIK they are 4 byte integers. I have found a way to retrieve oids without crashing Python or Zope. You must do an explicit type conversion to a 4 byte integer like so: SELECT int4(oid) FROM foo; This behaves in a much friendlier manner. I would still like to see the problem resolved, as I find the fact that an innocuous SELECT query could crash Zope a bit troubling. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] case insensitive sorts
Andy Dawkins wrote: Your analogies imply that this behavior is a bug or an unintended flaw in the design. I would argue that it is intentional. Unix file systems work the same way. Try doing an "ls" with mixed case files and you'll see what I mean. It isn't a flaw. It seems as though it was overlooked. The sort on text works by sorting the data by its ascii value. Capital letters have a lower ascii value than lower case letters. i.e. A-Z = 65 - 90 a-z = 97 - 122 The arguement is that the sort should probably go AaBbCcDdEeFf.etc -Andy My point is that the sorting is intentionally Unix-like and case sensitive on purpose. Not due to laziness. But, perhaps the reason Unix is like that to begin with is due to laziness anyhow 8^). We'll never know for sure. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Re: Spitter.c Hack
Jason Spisak wrote: Zopists, I finally got Splitter.c to let me index numbers and 'C++' in a TextIndex. I have about 50,000 objects in that index, and search performance is nearly instantaneous still. I am running on a big machine though. If anyone wants those changes there's really easy. Just mail me directly, since it's a long file to post. Could you maybe post just the diff for poserity? -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] New UI for 2.3
--- Steve Alexander [EMAIL PROTECTED] wrote: However, I do not like the 3-frame interface. I feel that the top frame is wasted space. The Zope logo and "Logged in as username | Logout" could as easily go at the bottom of the tree-view frame on the left. This would leave extra screen space for doing work. I agree 100%. please change this! I like the look of it, but it serves little purpose for the space it uses. I also much prefer blue to black as a background colour for the tabs and the "Root Folder" link. The black seems a bit overbearing. I agree here as well. Why does the root folder need to look different anyway? Just labelling it "Root Folder" is sufficient IMHO. I think it will cause confusion for it to look so different. = | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `- __ Do You Yahoo!? Yahoo! Photos - Share your holiday photos online! http://photos.yahoo.com/ ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] ZCatalog and 'fuzzy logic'
--- "Morten W. Petersen" [EMAIL PROTECTED] wrote: [snip] It seems I misunderstood the term fuzzy logic myself. Fuzzy logic means if I search for a word, for example 'programmer', it will return matches to the words 'program', 'programming','programmable' etc. I.e., it will somewhat intelligently return words that are similar in what they mean, using grammar rules (chopping off endings of words and making them match others). Hmm. Cheers, Morten ZCatalog TextIndexes support this type of "wildcard" searching. I posted a message a couple of weeks ago that describes the query syntax. Search the mailing list archives for it. = | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `- __ Do You Yahoo!? Yahoo! Photos - Share your holiday photos online! http://photos.yahoo.com/ ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
RE: [Zope-dev] New UI for 2.3
I agree that it looks better. The addition of another whole frame for this though is my main beef with it. Perhaps this could be integrated some other way. Frames should only be added when there is no other option. It's just that browsers waste so much space up there anyway, and the extra 32 pixels are in addition to that "waste". I personally don't care how it "looks" so much as how efficient it is. All of the other aethestic changes I feel enhance both looks and efficiency. The top frame does not IMHO. Form should definitely follow function here. BTW: I have been know to use Zope on an old machine with a 640X480 screen. Although I generally eschew the frames altogether then and open manage_main by itself. It's not really fun, but it works. --- Brian Lloyd [EMAIL PROTECTED] wrote: Are you guys working on 486's with 13in. monitors at 640x480 or something? :^) Seriously - Zope has been criticized for a very long time for being, ah, aesthetically challenged :) It is a valid criticism - we have been (and quite honestly, will continue to be) more concerned with function over form. But is it really so bad to make a 32 pixel-high concession to a small pittance of branding? I know that "branding" isn't important for those who are already believers, but Zope has grown enough that its reasonable to put some effort into "first impression factor". It doesn't help the community for reviews to come out that waste words on the visual appeal shortcomings of the UI and totally miss the point. A better first impression is a Good Thing. The top frame is also a place where we might want to put more "placeless" operations like logout in the future. You can only jam so much into the tree pane without it looking very much like way too much is being jammed into the tree pane :) FWIW, one of the things we may put there later is a way to do "browser preferences" via cookies to control things like default text area sizes. That could also have a "hide top frame" option for those who really can't spare the 32px. :^) = | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `- __ Do You Yahoo!? Yahoo! Photos - Share your holiday photos online! http://photos.yahoo.com/ ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] How do I create a folder with subfolders, docs etc?
--- Espen Sorbye Frederiksen [EMAIL PROTECTED]
wrote:
Thank you for your reply. I relised that my example
was not quite what I
ment. What if newfolder is a variable taking a
random string value. How
can I emediatly after creating the folder, with the
variable
newfolder id, create a subfolder within the one I
just made?
My sample code should look like this:
dtml-call expr="manage_addFolder(id="newfolder")"
dtml-call
expr="newfolder.manage_addFolder(id="anotherfolder")"
If you have any further suggestions I would be
grateful,
Espen
Try this:
dtml-call expr="manage_addFolder(folder_id)"
dtml-call expr="_[folder_id].manage_addFolder('subFolder')"
=
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[Zope-dev] Z Search Interface/ZCatalog bugs
There is a bug in 2.3.0a2 that prevents you from adding a Z Search Interface. It is basically a pathing issue to a dtml file that moved. The following is a patch for Aqueduct.py to temper this issue: 102c102 dtml_dir=Globals.package_home(globals()) --- dtml_dir=os.path.join(Globals.package_home(globals()),'dtml') There is also a bug in the Z Search Interface implementation of ZCatalog. Basically ZCatalog returns the list of Meta Data fields for both the searchable arguments and results. This means the search form created for a ZCatalog will probably not contain the correct fields. This patch corrects ZCatalog so that it returns its indexes as the searchable arguments. 448c448 for name in self._catalog.schema.keys(): --- for name in self._catalog.indexes.keys(): I will be sumitting these to the collector as well. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] manage_changeProperties in a loop
Arno Gross wrote:
If I try your suggestion wiht _.getitem(_['sequence-item'])
(If I remember well this was the first I tried).
dtml-call "REQUEST.set('rangList','folder1;folder2;folder2')"
dtml-in " _.string.split(rangList,';')"
dtml-with "_.getitem(_['sequence-item'])"
dtml-let index=sequence-index
dtml-call "manage_changeProperties({'rang':index})"
/dtml-let
/dtml-with
/dtml-in
I get this error: File
D:\packages\Zope\WEBSIT~3\lib\python\DocumentTemplate\DT_In.py, line 691, in
renderwob (Object: _.string.split(rangList,';')) File
D:\packages\Zope\WEBSIT~3\lib\python\DocumentTemplate\DT_With.py, line 133, in
render (Object: _.getitem(_['sequence-item'])) File
D:\packages\Zope\WEBSIT~3\lib\python\DocumentTemplate\DT_Util.py, line 337, in
eval (Object: _.getitem(_['sequence-item']))(Info: _)
Still any hints. Thanks.
Try this:
dtml-call expr="REQUEST.set('rangList','folder1;folder2;folder2')"
dtml-in expr="_.string.split(rangList,';')"
dtml-let folder="_[_['sequence-item']]"
index="_['sequence-index']"
dtml-call expr="folder.manage_changeProperties({'rang':index})"
/dtml-let
/dtml-in
Also, why are you passing the folder ids in a string like this? Where
are these names coming from, a form?
If so, there are ways to eliminate the whole string.split. Also, the
code would not need to be this complex if the objects themselves can be
passed instead of a delimited string of ids.
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Re: [Zope-dev] DTML block parsing
Steve Alexander wrote: With your patch applied, will nested dtml-comment tags still work? dtml-comment Some code commented out dtml-comment Documentation in a comment /dtml-comment Rest of code commented out /dtml-comment -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net In present form no. It also does not support block continuation tags. I will see what I can do about this. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] DTML block parsing
Casey Duncan wrote: Steve Alexander wrote: With your patch applied, will nested dtml-comment tags still work? dtml-comment Some code commented out dtml-comment Documentation in a comment /dtml-comment Rest of code commented out /dtml-comment -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net In present form no. It also does not support block continuation tags. I will see what I can do about this. OK, I have developed a new patch that almost completely fixes this issue. In fact I am happier with it in general than my first patch. There is only one flaw, although you can nest comments inside of one another, and you can have any manner of broken dtml inside, if you open another comment tag inside it, it must be properly balanced or you will get a parse error. Here are some examples: These do not generate errors with my new patch: dtml-comment dtml-if blah /dtml-comment dtml-comment /dtml-with /dtml-comment dtml-comment dtml-asdfsadf /dtml-comment dtml-comment dtml-comment Blah Blah /dtml-comment /dtml-comment These do: dtml-comment dtml-comment /dtml-comment dtml-comment dtml-if foo dtml-comment /dtml-if /dtml-comment /dtml-comment I am a bit concerned that dtml-comment should ever generate errors at all, but this is certainly an improvement. Anybody have any thoughts? -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] Re: [Zope-Annce] DTML Eval Tag Released
--- Phill Hugo [EMAIL PROTECTED] wrote: Hi Casey, This looks good but I got the feeling that it may be better to use the RESPONSE object to store variables in since this won't taint the input REQUEST. I'm not sure what your feeling is in this regard (I'm not sure the RESPONSE object is ever used for variable lookup as the REQUEST is (albeit last of all)) - this could actually be a good thing though as it would force people to use RESPONSE['variable'] in all cases rather than sometimes using variable and sometimes REQUEST['variable'] depending on the variable's name. The other option would be to pop them on top of the namespace as the _.namespace method and dtml-let tag seem to do. This would remove the need to alter either REQUEST or RESPONSE. I'm not sure how straightforward this would be though. Let me know your thoughts, Phill Hi Phill, Thanks for the feedback. As for the REQUEST vs. RESPONSE usage, the latter can't be used to store values and is really there as a way to communicate to the browser. The former is used pretty regularly to store scratch variables already. I agree that a better solution is to use a namespace. That was my original intention. However, namespaces must be explicitly scoped (ala dtml-let). That is, you can't create (push) one without explicitly popping it back off later down the road before the method ends. One of the primary goals of the eval tag was that you can assign variables that implicitly have the same scope as the method they are in, just like any other decent language. I also considered just manipulating whatever namespace happened to be on top of the stack, but there is no guarantee that the top NS is a mutable object, so that wouldn't work. A possible solution to this is for the method to push an empty scratch namespace for itself when it starts and pop it when it finishes. Then the eval tag can just use this namespace to store variables. I considered that too complex for my first release, but I certainly will reconsider it for future ones. Again thanks for the feedback. = | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `- __ Get personalized email addresses from Yahoo! Mail - only $35 a year! http://personal.mail.yahoo.com/ ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] Bug in DateTime?
I have been working on a calendar for a web site and I came across some
strange behavior with DateTime.
Using the isCurrentDay() method returns true if only the day number of
the month is the same as today's.
For instance, today is Feb 9, 2001. The following returns true however
in both Zope 2.2 and 2.3:
DateTime('3/9/2000').isCurrentDay()
Is this the expected behavior? Checking the code leads me to believe the
other isCurrent* methods behave in a similar way.
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[Zope-dev] DateTime Patch
I have concluded that DateTime has bugs in its isCurrent* methods. Basically isCurrentMinute, isCurrentHour, isCurrentDay and isCurrentMonth all would return true at inappropriate times. For instance, isCurrentDay will currently return true if the day number of the date is equal to the current day number regardless of current month or year. The others behave in a similar manner. Attached is a patch for DateTime.py that fixes the above. I am also submitting it to the collector. Enjoy. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- *** DateTime.py.old Mon Feb 12 08:40:23 2001 --- DateTime.py Mon Feb 12 09:40:22 2001 *** *** 1153,1180 that falls within the current month, in the context of this object\'s timezone representation""" t=time() ! return safegmtime(t+_tzoffset(self._tz, t))[1]==self._month def isCurrentDay(self): """Return true if this object represents a date/time that falls within the current day, in the context of this object\'s timezone representation""" t=time() ! return safegmtime(t+_tzoffset(self._tz, t))[2]==self._day def isCurrentHour(self): """Return true if this object represents a date/time that falls within the current hour, in the context of this object\'s timezone representation""" t=time() ! return safegmtime(t+_tzoffset(self._tz, t))[3]==self._hour def isCurrentMinute(self): """Return true if this object represents a date/time that falls within the current minute, in the context of this object\'s timezone representation""" t=time() ! return safegmtime(t+_tzoffset(self._tz, t))[4]==self._minute def earliestTime(self): """Return a new DateTime object that represents the earliest --- 1153,1186 that falls within the current month, in the context of this object\'s timezone representation""" t=time() ! gmt=safegmtime(t+_tzoffset(self._tz, t)) ! return gmt[0]==self._year and gmt[1]==self._month def isCurrentDay(self): """Return true if this object represents a date/time that falls within the current day, in the context of this object\'s timezone representation""" t=time() ! gmt=safegmtime(t+_tzoffset(self._tz, t)) ! return gmt[0]==self._year and gmt[1]==self._month and gmt[2]==self._day ! def isCurrentHour(self): """Return true if this object represents a date/time that falls within the current hour, in the context of this object\'s timezone representation""" t=time() ! gmt=safegmtime(t+_tzoffset(self._tz, t)) ! return gmt[0]==self._year and gmt[1]==self._month and gmt[2]==self._day and gmt[3]==self._hour def isCurrentMinute(self): """Return true if this object represents a date/time that falls within the current minute, in the context of this object\'s timezone representation""" t=time() ! gmt=safegmtime(t+_tzoffset(self._tz, t)) ! return gmt[0]==self._year and gmt[1]==self._month and gmt[2]==self._day and gmt[3]==self._hour and gmt[4]==self._minute ! def earliestTime(self): """Return a new DateTime object that represents the earliest
Re: [Zope-dev] Programmatic way to get the Zope Version
Steve Alexander wrote: Chris Withers wrote: Hi, I was if do something like: if zope_version = 2.3: # balh else: # blah Where do I get the zope_version bti and what format will it be in? You can get it as version_txt from Control_Panel. For example, from DTML: dtml-with Control_Panel dtml-var version_txt /dtml-with However, this won't do you much good, as when you have a version of Zope from CVS, it gets called "(unreleased version)". The way some Products detect the version is to try to import a module that only exists in one version of Zope, or try to look up an attribute that is only in one version of Zope, and then catch the Exception. Ideally, this will be the attribute or module that has changed that made you want to detect the version in the first place. Make your choices based on whether there is an Exception or not. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net dtml-var SERVER_SOFTWARE should do it. It is an attribute of REQUEST. I'm not sure what this looks like on CVS versions though. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Calling Catalog from python script
"R. David Murray" wrote: I'll probably figure this out as soon as I post like last time, but I've been staring at it and can't see my mistake. The following code returns a list of None's: objs = [] for catent in container.Catalog(context.REQUEST): objs.append(container.Catalog.getobject(catent.data_record_id_)) return objs I've checked, and catent is a mybrains instance and catent.data_record_id_ has an increasing number as its value. So why doesn't this work? Also, and this is a better reason for posting this to zope-dev than asking for help is grin: why can't I say catent.getobject() That would seem to be a lot more OOish. This is under Zope-2.3.0, by the way. --RDM That code looks pretty good to me. Did you try updating the Catalog? Also, what happens if just append catent. Do you get something other than None then? I would assume so, but it might help to see exactly what the meta data is to identify the objects it "should" return. I agree that getobject should be a method of the result item, although implementing it might be a bit tricky to do. I looked into that a while back. Perhaps I should take another look at that... -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Using Zope for Groupware/Messaging applications
"R. David Murray" wrote: Let me be a bit less cryptic. Design your system, and use ZPatterns, and you can defer questions about which storage suits the parts of the app until later, and can change your mind at need. For the kind of project you are embarking upon, the time needed to learn ZPatterns is well worth it. --RDM I concur. It would be best to abstract the storage. Using this technique you could scale the underlying storage theoretically without changing the top level code. That would also facilitate more experimentation on which scheme or combination of schemes would work best. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] how to create third party Product?
Huayin wang wrote: It would be great if someone can tell me how to create a third party product in 1) dtml, 2) python method. Does it depend on whether the product is a ZClass product? Where's the documentation that I can read to get a clue? thanks! Check out: http://www.zope.org/Documentation/Guides/ZDG-HTML/ZDG.html http://www.zope.org/Members/kedai/BuildSimpleZClass http://www.zope.org/Members/AlexR/CatalogAware http://www.zope.org/Members/maxm/HowTo/minimal_01 http://www.zope.org/Members/gtk/Boring/HowTo-Boring -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] ZCatalog Lazy Results
--- Johan Carlsson [EMAIL PROTECTED] wrote:
Hi,
I need to check an assumption I have made on the
ZCatalog Brains and Lazy Results from reading the
source.
1. The Brains gets its schema from the ZCatalog and
this
schema is basicly fixed. E.g. a search result
always has
the attributes defined by the Meta Data in the
ZCatalog?
Yes, you always get all the meta-data. However, does
anyone know how the "used" argument of
ZCatalog.searchResults works, or why you would use it?
I would rather be able to construct a Brain Schema
at search time
equivalent to the way theSELECT statement sets up
the result attributes
in SQL.
Example:
resultset =
Catalog.searchResults(query,schema=('id','title','keywords'))
Why is this important? I would suggest not putting big
stuff in the meta-data that might warrant this. Just
use the nifty new (v2.3) getObject method of the brain
to access whatever properties/methods of the actual
object you might need.
2. The laziness of the ZCatalog search result means
it's batched?
Lazy sequences work by not loading the result items in
memory until they are actually accessed.
Regards,
Johan Carlsson
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Re: [Zope-dev] ZCatalog stuff
--- Andy McKay [EMAIL PROTECTED] wrote: I disagree but it's not worth arguing about. However, the people who pay my salary feel that way which means I care ;-) Ive been taking the Larry Wall approach to this when people tell me the correct way to do things: "A Perl script is "correct" if it gets the job done before your boss fires you." [snip] Well hell, what's good enough for Perl is good enough for... *slaps self silly* C'mon, are you really seriously gonna back up reasoning for Zope features by quoting Larry Wall??? 8^) = | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `- __ Do You Yahoo!? Yahoo! Auctions - Buy the things you want at great prices! http://auctions.yahoo.com/ ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] ZCatalog distinct in SQL
--- Valérie Aulnette [EMAIL PROTECTED] wrote: Hi, I am using PTK and it does work with ZCatalog. I need to do the list of values that are in the catalog but I need do do like a "select distinct" in SQL to have each value only once. Do you know how to do that in ZCatalog ? Thanks. Valerie. For fieldindexes there is a catalog method uniqueValuesFor(name) which when passed the name of the index returns the unique values within it. hth, ===== | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `- __ Do You Yahoo!? Yahoo! Auctions - Buy the things you want at great prices! http://auctions.yahoo.com/ ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] ZCatalog hackery
Casey Duncan wrote: "Morten W. Petersen" wrote: Hi guys, I've got a problem with ZCatalog. I've got plenty of large objects, ranging from 100KB to 100MB in size. Needless to say, these take up a lot of processor time when indexed by the ZCatalog. Now, these object have to be moved from time to time, only moved, so that one or two of the related columns and indexes are affected (the path and the parent container id); is there a way to go around this so that those two, the one column and the index are updated, and not, let's say the indexed body (which is 100KB - 100MB in size) ? Thanks, Morten There is no built-in way. however I see no reason that the Catalog could not be extended to do this with a bit of python coding. A catalog contains a collection called indexes that contains the indexes themselves (what else?). An External method could be written like so (not tested): def partialReindexObject(catalog, indexes, uid, object): rid = catalog.uids.get[uid] for idx_key in indexes: idx = catalog.indexes[idx_key].__of__(catalog) idx.unindex_object(rid) idx.index_object(rid, object, None) I think that will do it. Pass the names of the indexes as a sequence in indexes, and data_record_id_ as the uid. The above does not update any meta-data in the catalog. Actually what I wrote assumes you are passing a Catalog not a ZCatalog. So you will need to change it for a ZCatalog to: def partialReindexObject(zcatalog, indexes, uid, object): catalog = zcatalog._catalog rid = catalog.uids.get[uid] for idx_key in indexes: idx = catalog.indexes[idx_key].__of__(catalog) idx.unindex_object(rid) idx.index_object(rid, object, None) Sorry about that. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] Class attr hotfix
I noticed that the most recent hotfix completely
denies access to the getClassAttr, setClassAttr and
delClassAttr from DTML. Is this going to be the
behavior for future Zope versions?
I know this will break code, so it might be prudent to
alert people when the fix is rolled into the next Zope
release.
I would like to argue for deprecating these functions
in favor of making the ZClass act like a dictionary so
that:
ZClass.set('name',value)
ZClass.get('name'[,inherit])
ZClass['name']
could be called securely from scripts. I would be
willing to write the code for this if you think it
would be a good idea.
=
| Casey Duncan
| Kaivo, Inc.
| [EMAIL PROTECTED]
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Re: [Zope-dev] Class attr hotfix
Brian Lloyd wrote:
I noticed that the most recent hotfix completely
denies access to the getClassAttr, setClassAttr and
delClassAttr from DTML. Is this going to be the
behavior for future Zope versions?
Yes - I think that manipulating actual class objects from
DTML is a Bad Thing.
I know this will break code, so it might be prudent to
alert people when the fix is rolled into the next Zope
release.
I would like to argue for deprecating these functions
in favor of making the ZClass act like a dictionary so
that:
ZClass.set('name',value)
ZClass.get('name'[,inherit])
ZClass['name']
could be called securely from scripts. I would be
willing to write the code for this if you think it
would be a good idea.
I'm not sure why you're wanting to do that, so it scares
me :) I think that manipulation of class objects is
beyond the scope of what "DTML scripters" should reasonably
expect to be able to do.
Oh nothing too scary. Mostly I have used it to store a counter to
automatically assign ids to new ZClass instances.
I was really thinking of this as a way to store properties across all
instances of a ZClass. I agree that manipulating objects from DTML is
BAD. My intention was to just store a property value or three.
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| Casey Duncan
| Kaivo, Inc.
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Re: [Zope-dev] QuickTime VR Movies
Andre Schubert wrote: Hi all, I have found an error or bug in handling QT VR Movies with Zope. I have uploaded three qt files into Zope as File objects. I also have installed this files in the normal appache directory. Now comes the error? If i do a wget with the files from the apache directory and thi files from Zope i get always two different version of the same file. That means that a QT File that comes from Zope has a different content than a file comes from apache. The problem is that this litte difference makes a qt plugin to crash. I'am using zope 2.2.4 on Immunix 6.2(redhat). Who can help??? What is Content-Type you are getting from Zope? What is the correct Content-Type? What is the extension of the QTVR file that was uploaded (if any). Zope uses the file extension or mime type of the uploaded file to try to determine the content-type of the file/image object . I don't see QTVR files listed specifically (although .mov and .qt are listed and map to 'video/quicktime'). If you don't have that many files, you can set the content-type manually in the Properties tab of the file object. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] QuickTime VR Movies
Andre Schubert wrote: Hi, the content-type of the files is video/quicktime. If i get such a file with wget i got the correct content-type, but the binaries of the file are different to a file got from apache. mfg My question then is, what is the "correct" type that apache returns? -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] (Z)Catalog searches
[EMAIL PROTECTED] wrote: We're using the internals of ZCatalog to do searching stuff in our Python Product. I've managed to get it working at a basic level by constructing a Catalog instance and adding indexes and calling searchResults(). Only now I need to get into more advanced features, like partial word matches and multiple or'ed search fields. I tried just passing a GlobbingLexicon() to Catalog instantiation, but that completely failed to work. As far as I can tell, it's not using the GlobbingLexicon at all (I put a print statements in all the methods and nothing is printed). I then tried using ZCatalog.Vocabulary(globbing=1) and that didn't seem to work either (still no hits on the GlobbingLexicon methods). Also, any hints as to how to have a "match any" multiple field "or" search would be greatly appreciated. I _think_ I can somehow pass a list of the fields to searchResults() as some sort of argument, but I'm really not sure how. Richard -- Richard Jones [EMAIL PROTECTED] Senior Software Developer, Bizar Software (www.bizarsoftware.com.au) Globbing support is part of the Vocabulary object which must be turned on when it is instanciated AFAIK. Are you passing the Catalog an existing Vocabulary when you create it or are you having it create one for you? -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] manage_main select ... / don't work with Mozilla
Cyril Elkaim wrote: Hi, The last builds of Mozilla do not accept anymore this kind of HTML tags: select / I have discuss with Moz developers and they say it's not in the standard. So now we must use something like select All the other tags must follow the same syntax, of course. The problem with the management interface of Zope is it uses '/' in many places. So it's not possible to use Moz for creating new objects for example. So should it be possible to do something about it :-) Cyril So then Mozilla doesn't support XHTML?? That is where that whole trailing slash convention is coming from. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] (Z)Catalog searches
[EMAIL PROTECTED] wrote: I tried both my_catalog = Catalog(GlobbingLexicon()) and my_catalog = Catalog(Vocabulary(globbing=1)) and neither resulted in any calls to any GlobbingLexicon methods! Richard Catalog doesn't take the Vocabulary object itself as an argument. It takes the (string) id of an acquirable Vocabulary. If you don't specify a string, it creates a standard non-globbing lexicon (Although a ZCatalog creates a globbing lexicon, go figure). Something like this should work (Assuming your product is an acquisition wrapper e.g. by subclassing Acquisition.Implicit): my_vocab = Vocabulary(globbing=1) my_cat = Catalog(vocabulary='my_vocab') I'm completely unsure why it was implemented this way. I can kinda understand for ZCatalog, but not really for Catalog. Anyone care to explain?? or you could do this without using acquistion, but you wind up creating the vocabulary twice: my_cat = Catalog() my_cat.lexicon = Vocabulary(globbing=1) -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Playing with DateTime
"[EMAIL PROTECTED]" wrote: Hello I am playing around with the DateTime module in order to adapt it to other formats than the American one. However, I would like not to start a work that someone is already doing or that is already done. I have found a little patch that solves temporarily the problem, but I would like to do something more definitive. However, I need to be careful due to the large use that is done internally by Zope. To whom can I get in touch regarding this issue? Best regards Stefano Vedovelli IMHO, the best approach would be to make mxDateTime available separately from DateTime in the _ variable. That would avoid breaking any code, but allow anyone who wanted to use mxDateTime that option from within Zope. I think a product that adds mxDateTime to the _ variable would be your best bet. My $.02 -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Adding ZClass Instances via Python
Edmund Goppelt wrote:
Ok, I know there's a howto with a working solution to this problem,
but this is *still* killing me:
How does one add a ZClass Instance in a way analagous to adding, say,
a DTML Document in a Python script?
With the dtml document, it's easy:
container.manage_addProduct['OFSP'].addDTMLDocument('anid', 'atitle','a file')
I've tried the following, which don't work, as well as a variety of
permutations and combinations involving container context.
constructor.Bill_add(None, context)
constructor.Bill_add(container, cons, REQUEST)
# Is this how one sets the REQUEST variable from a script? Can the
# REQUEST variable be set from any valid Zope object, e.g,:
# Anywhere.Anyobject.REQUEST.set('dfkjd', 123) will change the
# variable dfkjd in the REQUEST object?
container.REQUEST.set('id', '9389483484')
container.REQUEST.set('title', 'a title')
constructor=container.manage_addProduct['Bill']
The problem seems to have something to do with the getting the
contexts right and getting the REQUEST info. passed to the
constructor, but I'm just guessing at this point.
Bill_add is the standard dtml method constructor created by the ZClass product.
self = self.this()
ob = self.Control_Panel.Products.SomeProduct.SomeZClass(id)
ob._setId(id)
...Other inits such as property sheets, etc...
self._setObject(id, ob)
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| Kaivo, Inc.
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Re: [Zope-dev] Comment on CVS change of default textindex search operator
"R. David Murray" wrote: To: [EMAIL PROTECTED] Date: Mon, 19 Mar 2001 19:47:31 -0500 (EST) From: [EMAIL PROTECTED] (Chris McDonough) Subject: [Zope-Checkins] CVS: Zope2 - UnTextIndex.py:1.33.2.9 Update of /cvs-repository/Zope2/lib/python/SearchIndex In directory korak:/home/chrism/sandboxes/2_3Branch/lib/python/SearchIndex Modified Files: Tag: zope-2_3-branch UnTextIndex.py Log Message: Changed default query operator to 'AND' instead of 'OR' (way improved search results). This strikes me as a Very Bad Thing. Not the idea of having AND be the default query operator, but the fact of *changing* the default. If I remember correctly the default is documented (insofar as it is documented) as being AND, but the default has been OR for so long that I'm sure there are many sites that will break if this change is committed to a release. Worse, the behavior of a site as seen by end users will change. Finally, it is my experience that most search engines use OR as the default operator. I prefer AND myself, but OR appears to be something of a defacto standard. I'm willing to be convinced, though grin. A way to set the default would be cool, but might open up a can of worms. --RDM I'm a little torn between being alarmed at this and agreeing with it. I think if this is done there should be an TTW interface in ZCatalog to switch between AND and OR as the default. That would be the best solution IMHO. Also a _documented_ way to switch it in Catalog as well. My $0.02 -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] 2.3.x Catalog Brains
In doing some development using Catalogs in 2.3.x, I have run across some interoperability bugs between the various Catalog classes. 1. Catalog brains are slightly broken when applied agains plain Catalogs. Looking at __getitem__ in Catalog.py (line 225 and 231 in 2.3.1b2 in particular), the result record is made into a brain which is an aquisition wrapper of the parent of the Catalog object. When using a ZCatalog this is fine because the ZCatalog is the parent of the Catalog. However, when a Catalog is used alone the getPath, getURL, getObject, etc. methods of the brain do not work because they expect to find a getpath method which only exists in ZCatalog. Since this is merely a lookup into the Catalog's paths dictionary, I see no reason why this getpath method can't be in Catalog. A patch will be needed for Catalog.py and CatalogBrains.py to accomplish this, and I would be happy to provide one. However, I need to know why exactly the brains are wrappers of the Catalog's parent rather than the Catalog itself. Is this a security issue of some kind? Another fix for this would be to use slightly different brains for Catalogs vs. ZCatalogs. From what I see the mechanism for this is already in place. 2. This one is less of a bug than a feature request. I have created a CatalogPlus class that basically enhances the Catalog so that is plays well with CatalogAware. This entails just adding the catalog_object and uncatalog_object methods from ZCatalog to Catalog. It would seem to me to be quite easy to modify Catalog or CatalogAware to account for this automatically. Also why are subtransactions part of ZCatalog and not Catalog? My guess is that it is a ZODB specific feature so it doesn't belong in Catalog, is that right? -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Comment on CVS change
Chris McDonough wrote: I've gotta weigh in here, too; the breakage induced by this change will be large. Give that what *real* users expect is *neither* a Boolean "AND" *nor* a Boolean "OR", but instead a DWIM/Googlesque "affinity" search, I don't think the win is clear enough to warrant the breakage: I think long term, the Catalog machinery should support such "affinity" searching. * "AND" searches return *small* result sets; non-programmers will be surprised by the often-empty lists they get back, and won't have any clue how to broaden their search. False negatives suck. I think most people are getting used to narrowing their search by adding terms. Google, Yahoo, Lycos and the like have trained them to do this. I think the idea that folks, even nonprogrammers, don't know to do this in the post-1995 world may be a little flawed. I rarely find myself using any explicit boolean operators when I use Google. And even when it returns 657,340,269 pages, the ones I wanted tend to be in the top 30. I think "OR" searching is fine if the result scoring can be done intelligently somehow. Given that any site manager can override the policy trivially, using only two lines of DTML, should we really be switching the (admittedly arbitrary) existing polciy embedded in the core? No, I suppose not. I'll change it back. :-( Not happy about it. I still say a toggle in the Catalog management interface is the best solution. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] call pythonscript from python
Tim McLaughlin wrote: Anybody know how I can call a pythonscript from python? Currently I can call it, but I seem to have no context or security context, because it either will not let me access anything or fail with an attribute error in the context. What are the params that I NEED to pass in so that it can do its bindings (and if you know how to get them automagically, that would be incredible)? Tim The Bindings parent class of PythonScript defines a method __render_with_namespace__(namespace) that looks like it grabs the arguments and bindings from whatever namespace mapping you provide it and then executes the script. You could also use the _bindAndExec(args, kw, caller_namespace) method if you want to also pass arguments from outside the namespace. Take at looksie at lib/python/Shared/DC/Scripts/Bindings.py for the source. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Deleting objects by the users
Menno Brandsen wrote:
Hello all, I have a question conserning deleting objects(images) by the user
The situation is this :
I have a page that lists the contents of the folder below, containing images
of a site.
In that list a want to let the user/client delete the image that he wants.
I've tried using this syntax :
a href="#" onClick="dtml-call
"image_folder.manage_delObjects(ids=_['id'])"" DELETE /a
What happens now is that as soon as the page loads it inmediatly deletes the
images.
Can anybody tell me a sollution for this problem ?
I would be very gratefull ! =)
Greetings,
Menno Brandsen
This is a question better served on the main Zope mailing list. That
said, here is the answer:
All DTML is executed on the server before the page goes to the client.
That is why your images get deleted by viewing the page. The onclick
attribute is only useful for executing client side scripts like
JavaScripts, etc. To execute server side code, you must make the user
request the method that deletes the images. This is done by sending the
server a page request. So, you need to create two objects in Zope to
accomplish this. One that displays the images and another that deletes
the requested image and redraws (by a redirect) the image display page.
Here's an example:
dtml method view_images:
dtml-in name="objectValues('Image')"
dtml-var name="sequence-item"
a href="dtml-absolute_url;/delete_image"Delete this image/a
/dtml-in
dtml method delete_image:
dtml-if expr="meta_type == 'Image'"
dtml-call expr="manage_delObjects(getId())"
dtml-call expr="RESPONSE.redirect(URL2 + '/view_images')"
/dtml-if
This code is generic enough so that it would work in any folder. You
could place these methods above the folder(s) containing the images for
greater generality.
It might seem a bit confusing how this works if you don't understand
acquisition. The view_images method creates a link to each image in the
folder you call it for. The link is to the image object itself with the
delete_image method appended. This tells Zope to call delete_image in
the context of the image the user selects.
manage_delObjects is not a method of the image, but the image acquires
it from the Folder that contains it. So delete_image passes the id of
the image (using getId()) to the manage_delObjects method of the folder
containing it. It then redirects back to the view_images method which
will be sans the deleted image.
hth
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| Casey Duncan
| Kaivo, Inc.
| [EMAIL PROTECTED]
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Re: [Zope-dev] Comment on CVS change of default textindex search operator
"R. David Murray" wrote: On Tue, 20 Mar 2001, Casey Duncan wrote: It's so broken with OR for large datasets that the search results are virtually meaningless. We see this first-hand on Zope.org (which is now ANDed after an upgrade) and in most of our consulting projects. I strongly agree that there should be an easy way to switch textindex default queries between OR and AND on a per-index basis. I'd even be happy with a per catalog basis. Likewise. But this is the can of worms I alluded to. Another approach would be to allow the default operator to be specified at query time grin. Agreed. This should be part of the ZCatalog search API in addition to the default specified. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Deleting objects by the users
Rik Hoekstra wrote: one small correction: the line: dtml-call expr="manage_delObjects(getId())" should read: dtml-call expr="manage_delObjects([getId(),])" as the manage_delObjects takes a list as argument hth Rik Actually manage_delObjects will take a string argument if it is a single id. However a list with one item is also acceptable. Although you can declare a list with the trailing comma, it is not strictly necessary. That is only necessary for tuples because parens have double meaning in Python. List brackets are unambiguous. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] sql_quote problem?
Chris Withers wrote: Hi, When I do the following in a ZSQL Method: SELECT * from x WHERE y=dtml-sqlvar sec type=string it works fine, however, when I do: SELECT * from x WHERE y=dtml-var sec sql_quote I get: exceptions.AttributeError Traceback (innermost last): File /usr/zope/zope-2_3_1b3/lib/python/ZPublisher/Publish.py, line 223, in publish_module File /usr/zope/zope-2_3_1b3/lib/python/ZPublisher/Publish.py, line 179, in publish File /usr/zope/zope-2_3_1b3/lib/python/Zope/__init__.py, line 240, in abort File /usr/zope/zope-2_3_1b3/lib/python/ZODB/Transaction.py, line 179, in abort File /usr/zope/zope-2_3_1b3/lib/python/Shared/DC/ZRDB/TM.py, line 126, in abort File /usr/zope/zope-2_3_1b3/lib/python/Shared/DC/ZRDB/TM.py, line 119, in _abort AttributeError: rollback What gives? ;-) Chris It looks like the DA is trying to do a rollback, but tanking (perhaps a bug in the DA). Those two operations are different however. dtml-sqlvar adds quotes around the value, whereas dtml-var does not even with sql_quote. So the output SQL of the two respective examples you gave would be: SELECT * from x WHERE y='value' SELECT * from x WHERE y=value -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] sql_quote problem?
Chris Withers wrote: Casey Duncan wrote: sql_quote. So the output SQL of the two respective examples you gave would be: SELECT * from x WHERE y='value' SELECT * from x WHERE y=value Okay, so dtml-var sec sql_quote is broken? ;-) cheers, Chris No, that behavior is intentional. dtml-var has no way of knowing the intended type of the value like sql-var does, so it makes no assumptions. What I think is confusing you is the name 'sql_quote'. This refers to escaping SQL significant characters (like ' or ;) not putting quotes around the output. It is analagous to the html_quote and url_quote options. Because of this, dtml-var can be used places that sql-var cannot. For instance you could use it to affect different parts of the SQL other than just the WHERE clause, such as the ORDER BY clause for example. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] ANN: Proposal for ZCatalog drop-in indexes
Dieter Maurer wrote: Chris McDonough writes: I'd like comments on this proposal if you've got the time: http://dev.zope.org/Wikis/DevSite/Proposals/DropInIndexes Looks good. When you are changing the indexing and catalog stuff: * make the interface "index" public, such that it can be used from outside the ZCatalog * standardize the result type of index searches such that partial search results can easily be combined * provide operators "union", "intersection" and "difference" on search results. That would be sweet. This whole proposal could take Catalogs to a new level of functionality. I think the last two points would be especially helpful. They might be a bit challenging to implement with Lazy sequences however. It would be nice to make the result sequence even more virtual and even more closely tied to the Catalog. If search results were abstracted a bit further, implementing combine operations and even sub-searching could be made highly efficient. Perhaps this is not in the scope of the current proposal, but I think we should at least aim in that direction. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] dtml-in performance
Brett Carter wrote: What can I do to maximize the peformance of a dtml-in statement? When iterating over a 2000 row database query, it takes about 20 seconds - time mostly spent doing security checks, and calling __getitem__ in DT_InSV.py. Is the performance of dtml-in just slow? -Brett Another performance consideration with looping in DTML is that whatever is in your DTML block is reinterpreted each time through. Although it is parsed (hopefully) only the first time through, this overhead is still considerable when multiplied over 2000 rows. You are essentially using an interpreter (Python) as an interpreter for DTML. I would seriously consider moving this entire operation (query, iteration and html generation) to native Python if performance is a big consideration. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] cvs checkin?
Andy McKay wrote: Im assuming I dont have a right to do cvs checkins... so how do I get this tiny stupid little change made, just email Brian ;P? Collector? Works for me 8^) http://classic.zope.org:8080/Collector -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] How to choose: Or, Not and And when using searchResults().
Chris McDonough wrote: Erik Enge wrote: On Wed, 18 Apr 2001, Chris McDonough wrote: You need to manually do unions or intersections on results from multiple calls to searchRequest currently. Is this a feature to be implemented? If not, why not? DC has no no concrete plans to implement operators or precedence in catalog queries, although I think it's a really super-worthwhile idea. We're currently focusing on the things in the Zope 2.4 plan (see http://dev.zope.org/Resources/zope_240_plan.html). If someone wanted to try to implement it, they could create a fishbowl project and I can provide assistance. Oh, and by the way, "searchRequest"? __call__ works too. ;-) - C This is a project I have been keeping in the back of my mind for a while now. At present I do not have the resources to devote, but it is my hope that this will change. I feel strongly that that ZCatalog should have a general query language on par with an SQL where clause. Much of the work to implement this exists in various places, it really just needs fleshing out and tying together. I have also been waiting for the ZCatalog changes that have just taken place in 2.3.1. Now that this has happened, it may be a good time to start the discussion in the Fishbowl. I would be willing to draft this proposal, but it will be a few weeks before I realistically can do it. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] How to choose: Or, Not and And when using searchResults().
Chris McDonough wrote: BTW, some changes are coming to the way we allow contributions to the Zope codebase which have the potential to reduce the DC "drag factor" for this and other similar projects. - C I await this process change with great curiousity. As for the ZCatalog proposal, I am approaching from a fairly selfish perpective. It would just make Zope that much better for me to use! Plus I think it would be a fun, doable and useful project. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] Re: [Zope] CatalogAware does not work?
John Morton wrote: Why couldn't CatalogAware do this? If nobody has a good reason, I might push forth a patch to CatalogAware to implement this. A simple case for the present flexibility is that you don't need to reindex for every property change, just the ones that are actually indexed. Agreed, CatalogAware should ideally check this to make sure reindexing is necessary. A more complicated case would be an operation that changes several instances at once. It's expensive to reindex for every instance you change, so it would be useful to pass a flag to the ZClass's change method to tell it not to do a reindex, and reindex the lot once the operation over all the instances is completed. I have actually done this for a Product I am developing. It allows you to accumulate property changes and reindex only once. Supposedly, the Catalog is more efficient in this regard anyway as of 2.3. I guess that you could build this kind of functionality into CatalogAware, but I'm generally in favour of having flexible and optional rather than automatic reindexing, and just adding documentation to discuss some of the different cases. You could hack Property Sheet Interface to add a call to reindex if the ZClass is catalog aware. I would not want to make PropertyManager directly aware of CatalogAware if I could get away with it. Perhaps the way to deal with this is to have PropertyManager call a hookable method afterChangeProperties or some such, passing a list of properties changed. Then your ZClass could simply call reindex_object if it feels it is necessary. That would give full disclosure and behavior control back to your specific implementation. But it would simultaneously cover property changes made in the management screens and everywhere else. I am moving this discussion over to zope-dev to see if anyone else there has any ideas. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] ZSQL and Normalized databases (or why ZSQL sucks)
The Doctor What wrote: * Paul Erickson ([EMAIL PROTECTED]) [010419 17:02]: The Doctor What wrote: * Loosing the variable between the form and dtml-if I don't understand this. I'm assuming that you are losing values that are not in your argument list. All you have to do is add the arguments. That isn't what I mean. Try this (typed in, so it may need to be adjusted): paramfoo=0/param dtml-if expr="foo != 0"Life is good/dtml-if You'll NEVER get Life is good to print out. EVER. This is because ZSQL is setting foo to 0. But dtml-var and dtml-sqlvar both work. Reason: foo=0 is actually foo='0'. foo:int=0 should work like you want. Database normalization isn't really an issue. It sounds like you're really just having problems with the syntax of joins. Nope, can do joins. Been doing joins (mainly inner). Not the problem. The problem is that if I have tables like: Table1 -- id name desc Table2 -- id Table1ID -- Foreign Key thrown in for fun. name desc And I join them, then I MUST rename all the selects using AS: select Table1.id as id1 Table1.name as name1 ...etc Because I can't have zsql put the variables in the caller's namespace as "Table1.id". It puts them in as "id" (without the AS). Fortunately, I found the column for sqltest (which is the other end of ZSQL): dtml-sqltest id1 column="Table1.id" This is a function of your field naming convention more than anything. Granted you don't always have control over that. I am surprised that name="spam.eggs" doesn't work on sqltests (it works everywhere else). Are you explicitly saying name="..."? that could be the problem, bare quoting assumes expr="..." where periods are significant. Can I use them from a python script? If not, what's the point? I mean: External methods are nice to have when you have *no other choice*, but they aren't something I'd want to debug and deal with for object. Python scripts are quite helpful for calling ZSQL methods. Just remember to pass REQUEST or the arguments explicitly. hth, -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] CopySupport bug
There is a subtle bug in the CopySupport module that makes it impossible to copy and paste a folder that contains a ZCatalog with CatalogAware objects in indexed in the catalog also in that folder. The reason is as follows, CopySupport calls a hookable method manage_afterClone (which is hooked by CatalogAware). It does so after a copy is made of the object but BEFORE the copy is mounted in the ZODB. manage_afterClone in CatalogAware tries to reindex the object, and in doing so tries to derive its URL for use as the ZCatalog uid by calling absolute_url on the object. This fails of course because the object as yet has no URL because it is not mounted. The error reported is a KeyError on SERVER_URL. To make a long story somewhat shorter, I have a simple patch for this, but there is still one more subtle bit of behavior to take note of: When the ZCatalog is copied, all of its indexed data gets copied. Then the new copies of the objects index themselves. This means that the copied catalog has twice as many objects in it as the original. This bugged me at first, but it makes sense and I don't see any obvious solution that would be consistent. For those interested, the patch is here: http://classic.zope.org:8080/Collector/2205/view -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Object dereferancing Question
R. David Murray wrote: On Tue, 8 May 2001, Jeff wrote: I have created a product with a zclass that contains a zclass; classA contains classB. [...] Now for the part I don't understand. I have a page where I would like dynamically display a classB object. I used the following: dtml-var expr=_.getitem(index_object, 1) Where 'index_object' is the id of a classB object within the name space (same folder). I thought that this would call the 'default rendering' for the named object, but instead returns the object. '1' means call the object if it is callable. ZClasses are not callable. Therefore you get the object back. See the Renderable Product if you want to fix this grin. --RDM This strikes me as a bug. How would you all react to making ZClass instances callable and have their behavior be: look for an instance method index_html and call it, and failing that, just return the object. Thoughts? -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] PropertyManagerEvents proposal: Last call for review
I have a proposal up for discussion on adding hookable callbacks to property events. If you are interested in such topics as property validation, CatalogAware syncing on property changes, etc, please take a look within the next few days. I think this is something that many people could use, so your comments are valued. http://dev.zope.org/Wikis/DevSite/Proposals/PropertyManagerEvents Next week I would like to deliver the patch to implement this, so if you have something to say on this topic speak now! -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: oodb philosophics ;) was: Re: [Zope-dev] Experiments with ORMapping
Tino Wildenhain wrote: Hi shane, I think the motivation people want an RDBMS storage beneth zodb is because they understand RDBMSes these days are performant, relieable and can quiete easy maintained. I've seen Java implementations using this approach to achive persistens using as example Powertier[tm] to explicit map oop data to an RDBMS. I didnt like it because you have to map your objects each time you create a class, keep in mind not to infere with others etc... Would it not be better to improve the abilities of the Filestorage to handle updates better? May be most of the storage system in C? With logfiles like modern RDBMSes use to incorporate fast changes? However, to avoid pickling/unpickling and may be to update on attribute-change, we need the approach you mentioned. What about using a real oodb for zope? Dont remember any particular product name, but I heard something. Regards Tino Wildenhain It would certainly be an interseting exercise to put Matisse or Objectivity behind Zope as ZODB storage, however I think there will always be kludgeyness because features of Zope wont directly map (like versions). I think the Berkeley storage option will eventually prove to be the ticket. Probably sooner than later. How about XML storage! 8^) You think startup times are slow now... -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: oodb philosophics ;) was: Re: [Zope-dev] Experiments with ORMapping
Cees de Groot wrote: Shane Hathaway [EMAIL PROTECTED] said: That's one reason ZODB is so nice. You can write an application without writing a formal schema. One of the reasons I am seriously considering to migrate our production database from PostgreSQL to ZODB. I am about to implement our product database, and it is just too darn complex to bother maintaining SQL tables for it... Actually OracleStorage and bsddbstorage, recently released, are designed to address concerns about performance and reliability, and they do an excellent job at it. And I consider ZODB as real an OODB as anything else. (In some ways it's the best out there IMHO.) I heard that OracleStorage was quite a bit slower? And from what I've seen from FileStorage, it's a basic transaction log - what can be more reliable than that? Are people using ZODB for non-Zope data? I'd be very interested to discuss things like emulating extents, patterns for indexing, etcetera... One of the biggest limitations in my mind is the lack of a general query language for the ZODB like what you get with most OODBMS and all RDBMS. ZCatalog is improving, but it is just not quite there yet. I do feel that the ZODB is quite robust, and with the added option of berkeley storage along with others, you have several back-end choices. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: oodb philosophics ;) was: Re: [Zope-dev] Experiments withORMapping
David Brown wrote: At 11:45 AM 5/11/2001 -0600, Casey Duncan wrote: One of the biggest limitations in my mind is the lack of a general query language for the ZODB like what you get with most OODBMS and all RDBMS. I used to think this as well. But isn't Python a decent query language? Isn't it nice to be able to have all of the facilities of Python at your disposal when manipulating data, rather than hoping that whatever database you are using doesn't have a brain-damaged implementation of SQL? No and yes. Python is a great oop language, it has no inherent querying capabilites though outside of namespace lookups (with acquisition when in Zope) and dictionaries. You would need to build in all possible queries as Python methods none of which would be very general. This is something you need not do with a general query language where you can make arbitrary queries at will. Isn't it nice not to have to convert back and forth between SQL types and native types? Isn't it nice not to have to swap in your SQL mind in the middle of your Python program? I am not arguing necessarily for SQL as a query language for the ZODB. Although it is an accepted standard, but not a perfect one by any means especially for OODBs. Its appeal lies mainly in the high level of community familiarity and the plethora of SQL software to borrow from. Having a general query language makes it easy for people who know that particular general query language to write programs. It makes it easy to access a bunch of different data sources, at least until the monster named implementation differences rears it's ugly head. We've all spent years learning to make our programs interface with databases, learning how to jump the mental chasm between our programs and they way they want to manipulate data, and the way that the database wants to manipulate data. Isn't it nice not to have to do that any more? Yes, I would argue for a tight integration between the query mechanism and regular Python, something that Catalogs have begun to implement. However their query language is a very limiting argument list. Perhaps a more general Python based query language of some kind needs to be developed. Something like an expression that returns the set of objects that meet its criteria. Exactly what this would be would need much community (Python and Zope) discussion. A start to this discussion can be found here: http://dev.zope.org/Wikis/DevSite/Proposals/UnionAndIntersectionOperations Don't get me wrong, I believe I get your point. SQL implementations are getting more and more compatible. There are OODBMS query languages specified. There's no really good way of making different programming languages and programming environments interoperate without some sort of common meeting ground, like a general query language. A be all query language for all databases (Which would be SQL at this point, which is not necessarily tailored to OODBs) will always have compromises and flaws. I look at something like CORBA which is can be used to tie programs of all different languages together. Unfortunately the result of reconsiling COBOL, C, Python, Java, Perl, BASIC, etc. to some common ground is not always very pretty. I would really be happy just to get Python (and possibly C) to be able to perform general ZODB queries without resorting to kludges like spam_usage='range:min:max'. So what I am talking about is not really general, but mostly Python/ZODB specific. And perhaps I'm overdoing the response, perhaps I've gone off in a different direction. I've just been thinking about this quite a bit lately. dave I think this is a very important topic of discussion. Thanks for adding your thoughts! -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: oodb philosophics ;) was: Re: [Zope-dev] Experiments with
Cees de Groot wrote: David Brown [EMAIL PROTECTED] said: But isn't Python a decent query language? Isn't it nice to be able to have all of the facilities of Python at your disposal when manipulating data, rather than hoping that whatever database you are using doesn't have a brain-damaged implementation of SQL? Yup. Our business objects are sitting on top of my homebrew O/R mapping layer, and I find myself entering the Python shell to do ad-hoc stuff with them more and more often. Especially because stuff that repeats one or two times is easily added as a method on the object for later reference... One nice idea that should be possible in Pythonland as well: a Smalltalk O/R mapping layer called GLORP uses Smalltalk as a query language in a very nice way. Queries are given as Smalltalk blocks (say lambdas), and the mapping layer interprets the block's parse tree in order to spit out equivalent SQL code. Say: Employees.get(lambda e: e.name[:3] == 'Foo') to get all employees that have a name starting with Foo. The only problem with this is that lambdas are not safe for TTW scripting 8^(. Although a safe lambda could probably be conceived of course... -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Fwd: [Zope] ZCatalog + Directory product question
Júlio Dinis Silva wrote: Any hints? Best Regards, Julio Dinis Silva From: Júlio Dinis Silva [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: [Zope] ZCatalog + Directory product question Date: Tue, 15 May 2001 18:29:37 +0100 Hi, supose you have a product with two classes: MyCategory | -- MyLink Both classes are CatalogAware. The ideia of this classes is to implement a Directory like yahoo (think about the Yiahw product). [snip] Well the problem arises when you have 30 results in your search and all are Mylinks in a directory depth path of 10 category... The search becomes to heavy,i.e, scalability is compromised. You should create an instance method (It will need to be a Python script, DTML methods cannot be indexed)to return the result of the value of active in the acquisition stack. Then index against this method. This puts the burden on updates, so whenever a MyCategory is changed from active to inactive, all child objects will need to be reindexed. This can be done by creating another Python script that gets called on updates to MyCategory objects. The indexed instance method could be something as simple as: return getattr(container, 'active', 0) Only set the active property on those objects that are actually active. Don't set the property at all on inactive objects. That way acquisition does the work instead of doing it manually (an probably much slower). To see if an object is active, just call the instance method. I'm thinking I could use the zope security engine to do the active/deactive trick, i.e, when I deactivate one MyCategory I uncheck some security entry, then listing my directory I do a dtml-in with skip-unauthorized, and when I do a search I try to getObject MyLink's results as a anonymous role and then skip_unauthorized. I think this skip_unauthorized could be the solution for this ZCatalog+Directory product scalability, because instead of running trough the PARENTS and check a property, I will be using zope's internal security mecanism. That is a interesting idea, but I don't think it would really make it much faster. Although I could be wrong. Basically you would make it so that users performing the query didn't have view permissions on the inactive Categories. It would be more challenging to test as well. It would however make updates less intensive. Any hints, Júlio Dinis Silva hth, -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Wildcards in TextIndex query. Do they work?
Erik Enge wrote: Hi, is it me, or is this just not working: (word1 or word*) and (wor?3) ie. wildcards in TextIndex queries. I can't seem to make it work, and I'm not able to track down where it stops working. Should it work in the first place? Zope 2.3.2 Thanks. Works great for me. Perhaps you are using a Vocabulary that has Globbing turned off? -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Wildcards in TextIndex query. Do they work?
Erik Enge wrote: On Thu, 24 May 2001, Casey Duncan wrote: Works great for me. Perhaps you are using a Vocabulary that has Globbing turned off? I'm not sure, how do I check? This query works: wil?car* This doesn't: (wil?car* or something else) and (word1 and word2) I'm not sure how well grouping with parens is supported right now. I know phrase matching isn't supported very well. I can't see that the query-parsers in UnTextIndex.py transforms them differently, but I might be missing something obvious. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] dtml-in batching improved
Ivo van der Wijk wrote: On Wed, May 30, 2001 at 10:02:31PM +0100, Chris Withers wrote: When using batching in dtml-in, why is 'previous-sequence' only defined at the first iteration of the current batch? And why is 'next-sequence' only defined at the last iteration of the current batch? I know this problem ;-) I had it too, and stuck something in the collector about it. I did manage to get the layout you're after without modifying Zope though (see the search page on www.nipltd.com) I've done it myself as well using (as described in the posting) two dtml-in's (the second one purely for displaying the prev/next links). Is your solution any different? (The only one I can think of is storing the info in your REQUEST object and using it later, but that's really ugly.) AFAIK that is what the next and previous options for dtml-in are for. Usually I just store the sequence (if it is a query) in a variable using a let around three (or more) dtml-ins. Two of which use the next or previous option to create the batching links. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Name space in a Script (python)
--- Jeff [EMAIL PROTECTED] wrote: Hi all, I'm trying to get variables from the name space in a python script without much luck... I think I am missing something very simple, but after hours of searching I'm at wits end. This is what I am trying: A DTML document has several properties defined on it. It calls a python script that needs to access these properties. No matter what I try, I can not get the properties from the calling DTML document in the python script... What am I missing? Thanks, Jeff This will depend on how the Python script is called, my recommendation would be to call the script in the context of the DTML document like in the URL: http://myserver/DTMLDoc/pyScript Then the DTML Document would be accessed through context as in: context.title Otherwise, you would have to access it by traversing the attributes of it's parent folders as in: doc = context.folder.subfolder.DTMLDoc doc.title hth, = | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `- __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail - only $35 a year! http://personal.mail.yahoo.com/ ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] How to return downloadable content from Python Method
Blandford, Simon [BSS Audio UK] wrote:
I am compressing files which need to be uncompressed inline before
download. The DTML href=... calles a python method in the product
which returns the uncompressed file data. Say this file is an MSWord
document, how do I return this as a file to download? Presently, the
browser just tries to display the binary file and makes a mess of it.
Regards,
Simon B.
It probably is not setting the content-type header. Add something like
this to the method that returns the data:
RESPONSE.setHeader('Content-Type', self.content_type)
Where content_type is set to the MIME type of the data, which for MSWord
is 'application/msword'
--
| Casey Duncan
| Kaivo, Inc.
| [EMAIL PROTECTED]
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Re: [Zope-dev] dtml-in batching badly
Joachim Werner wrote: That's not the behaviour I'd expect. Can anyone confirm this is a bug? As LEE Kwan Soo has already said, it is not a bug, but a clever (too clever?) feature that should maybe not be enabled by default. Every second week or so somebody runs into this and thinks it is a bug. To the DC people: Do you think it would break any code badly if the default behaviour was orphans=0? Here is a (again perhaps too clever?) suggestion. Make the orphan value equal zero by default if size = 3. Otherwise keep it at three. I'm not oppossed to making it zero all the time either. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Fishbowl not problem centered enough
Jay, Dylan wrote: Fishbowl is a great idea but it seems to be that its solution focused rather than problem focus. Perhaps if you had a page that listed all the problems with zope or problems that need to be solved that isn't as easy as it could be with zope. The fishbowl is also pull technology, and so it is time-consuming to keep up with the developments. I personally find it to be cumbersome, limiting and not really conducive to actually getting stuff done. The collector currently fulfills the role of a bug list, and to some degree a feature request bin. However, I (and others) find using it for the latter is often a waste of time. Problems could then be organized according to priority due to severity or strategy, or even voting via the comunity (ala Java bug parade developer.java.sun.com/developer/bugParade/) Then under each problem could be listed the proposals that form solutions to the problem. Of course some solutions may solve many problems and therefore appear more than once. I agree that a community-centered bug/feature request collector would be beneficial. One that does not rely exclusively on DC's resources. DC just does not have the bandwidth to deal with everyone's needs. I know there has been talk of opening up the Zope CVS to outside contributions, I personally think this is long overdue. In order for a community development forum to really work, this would have to happen. I just see lots of solutions many of which attack some of the same problems and no clear way to get those people comunicating and making informed trade-offs This is one of the challenges of open-source development. I think we as a community need to leverage our own technology more to facilitate its further development. And I think that means relying on DC less and therefore decentralizing things more. I know that the folks at DC are thinking seriously about these issues. I would say that unless something is actually done soon about opening the Zope core to outside contributors, they run the serious risk of someone just forking the code to do it for them. I also think that Zope.org itself could greatly benefit from direct outside contribution. Dylan Jay mailto:[EMAIL PROTECTED] Avaya Communication Tel: +61 2 9886-8961 Level 3, 123 Epping RoadFAX: +61 2 9352 9224 Nth Ryde NSW 2113 Mobile: 0409 606 171 AUSTRALIA -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Fishbowl not problem centered enough
Ken Manheimer wrote: On Wed, 20 Jun 2001 09:24:40 -0600, Casey Duncan [EMAIL PROTECTED] wrote: Jay, Dylan wrote: Fishbowl is a great idea but it seems to be that its solution focused rather than problem focus. Perhaps if you had a page that listed all the problems with zope or problems that need to be solved that isn't as easy as it could be with zope. I think it would be helpful to have a big picture, with goals and objectives, into which to fit the pieces - would that address the kinds of things you're talking about? The fishbowl is also pull technology, and so it is time-consuming to keep up with the developments. I personally find it to be cumbersome, limiting and not really conducive to actually getting stuff done. I've really wanted to enable people to subscribe to notification about changes to wiki pages, and to notifications about additions to the wiki. Unfortunately, i didn't have time to get to that in the WikiForNow project. As soon as i'm clear form a current project i *may* be able to concentrate on at least formulating a reasonable quick-and-dirty way to do notifications, and getting it done for the short term. Whether or not it's me doing it, i think we're going to be bringing more attention to these issues. Opening the development process itself could enhance the resources available to you and solve this problem. However, I have more issues with wikis than just the notification aspect. I think they limit accessibility of data because they are really just big globs of text. I personally feel the whole fishbowl concept has some flaws both in technical and administrative implementation. I for one don't exactly know how to proceed beyond a certain point in the fishbowl. Some of my proposals for example end with some thing like this from DC: I think we need to address this a different way, however I don't have time to say exactly how right now. OK, so now what? I know there has been talk of opening up the Zope CVS to outside contributions, I personally think this is long overdue. In order for a community development forum to really work, this would have to happen. This actually is high in our priorities, but the key players have been swamped. From a discussion w/paul recently i think we'll be getting some more attention to doing this, very soon. I understand, but this is the way to get some more resources on your side in the long run. I for one will shed an entire frustration level with Zope when this happens. I think the fishbowl, as it is, is a good significant move towards exposing the process and enabling involvement. Mailling lists help conduct the collaboration. However, more is needed to facilitate that process - selectively enabling checkins, doing notifications to make tracking of developments manageable, fleshing out the context (problems/big picture). It's an incremental process, and we may have lapsed too long in progressing on those increments - perhaps we need to chart out some of these critical pieces, so we can better formulate how they're being attacked - and maybe enable more help with the increments. I agree that the fishbowl is beneficial, if for nothing else than a sounding board for the possible directions of Zope. But, like I mentioned before, I think the community needs more involvement directly with the development of its own tools like the fishbowl. I realize there is a risk to DC of loosing some level of direct control, but I suggest that a democratic development approach although less decisive and centralized is superior to a despotism. I hope to have expore this some, internally, and have more to say about it next week. I'll await further developments. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] ZPL and GPL licensing issues
Federico Di Gregorio wrote: On 21 Jun 2001 11:39:37 -0400, Jim Penny wrote: On Thu, Jun 21, 2001 at 05:18:40PM +0200, Federico Di Gregorio wrote: On 21 Jun 2001 11:08:30 -0400, Jim Penny wrote: [snip] OK, consider this from another point of view. If I have an operating system may I install a piece of GPL software on the operating system? May I redistribute the operating system? With the GPL software? May I invoke/run the GPL software? My understanding is that the answer to every one of these is yes. yes. only if it is free. only if it is free. yes, but only because gpl allows for gpl code linking with the major components of the os even if they are proprietary. Uh, you might want to reconsider the only if it is free parts. After all Interix had a business of selling GPL software for a non-free OS. Now Microsoft has that business (NT Services for Unix Pack). IBM distributes gcc and perl. Cygwin sells GPL software for non-free OS's. ops. ok, poorly worded. third parties can distribute only if the os is free, vendor can do as he please, obviously... [snip] err, no. if you write an external module using only python code, as long as you use a gpl-compatible python to run zope, you can call your external code from zope. if you write a product suclassing dc code, you're effectively 'linking' and gpl limitations apply. GPL limitations apply to whom: To you, the developer? To a downstream user invoking the product via dtml-call or dtml-var or their pythonish equivalents? To a downstream developer who modifies your product and redistibutes the modified product? To a downstream developer who writes a component that invokes the GPL component? In my mind the only sensible answers are developer - no, user - no (but see Jerome Alet's codacil), downstream modifier - yes, downstream developer who uses - no. The only other sensible option is that, indeed, no one may distribute GPL components for Zope, including the original developer. as i said before, writing gpl code subclassing zope is a non-sense. even the author cannot, imho, redistribute its work with a plain gpl attached to it. the gpl says that if you link with gpl code *all* the code should be gpl or gpl-compatible (major os components like clibs, compilers, etc are an exception). so even the author cannot do that without licensing under gpl plus some exception (as a special exception you're allowed to link this code with zope or any other zope product distributed under the zpl.) see the (in)famous gpl vs. qt thread in the debian mailing lists for an in-depth analisys of this problem. To me this is the key point. If you GPL license a product (or other software) for Zope, you cannot subclass ZPL coded classes in your product without violating the GPL. This makes a strict GPL license nearly useless for Zope development and incompatible (license-wise) with Zope itself. What bugs me is when people point to the ZPL being the problem, it is the GPL that is the limiting factor IMEHO. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] ZPL and GPL licensing issues
Gregor Hoffleit wrote: On Thu, Jun 21, 2001 at 10:02:34AM -0600, Casey Duncan wrote: To me this is the key point. If you GPL license a product (or other software) for Zope, you cannot subclass ZPL coded classes in your product without violating the GPL. This makes a strict GPL license nearly useless for Zope development and incompatible (license-wise) with Zope itself. What bugs me is when people point to the ZPL being the problem, it is the GPL that is the limiting factor IMEHO. But that's a little bit like standing in front of a mountain and saying Go away, isn't it ? From the viewpoint of the GPL, the ZPL is the limiting factor, since it employs restrictions (does it really ???) regarding the distribution of binaries, and since it has a advertisement clause that restricts your right to distribute Zope. On the other side, from the viewpoint of the ZPL, these requirements of the GPL are the limiting factor. But I'm afraid the discussion on who's guilty won't solve the problem, which indeed is perceived by all of us (is it ?). Gregor You are correct my friend. And both sides (DC and FSF) are unwilling to change their licenses for compatibility with the other. So, the incompatibility stands and there is little we can do about it; except understand that it exists and make informed choices that are acceptable to ourselves as developers. That may mean if you are a staunch GPL advocate, adding a Zope clause to you license. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] Hey Chris, question for you
Chris: I am working on getting a decent query language for ZCatalog/Catalog and I have been able to make good progress, however I am running into a bit of an issue that I thought you might know something about: In order to implement a != query operator, I am trying to do the following: From the index, return the result set that match the value (easy) Subtract that from the set of all items in the index (not so easy) I see that there is the difference method available from IIBTree, however I seem to be unable to use it on the entire index (Which is an OOBTree and not really a set I guess). Here is a snippit of my code which doesn't work: if op == '!=' or op[:3] == 'not': w, rs = difference(index._index, rs) # XXX Not a warm fuzzy... (where rs is the index result set that matches the value and index is the Catalog index OOBTree) What can I supply for the first argument to get a set of all items in the index, or is there any easier and better approach to this whole issue? BTW: I realize I could step though _index.items() and create an IISet but that seems awful inefficient... Thanks in advance for any ideas you might have... -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Hey Chris, question for you
Chris McDonough wrote: Chris: I am working on getting a decent query language for ZCatalog/Catalog and Very cool... I have been able to make good progress, however I am running into a bit of an issue that I thought you might know something about: In order to implement a != query operator, I am trying to do the following: Tricky. Ok, I was able to get it to work by instantiating a IISet around _unindex.keys() and passing that to difference (Thanks!), however, I notice an interesting side effect. Let's say you have a TextIndex on title and you do the following query: title != 'foo*' Which to me means: all cataloged objects whose title do not match the substring 'foo*' However, this is not what you get exactly, instead you get: all cataloged objects that have a non-empty title that does not match the substring 'foo*' Because from what I am seeing, objects with empty (or no) titles are not included in the index *at all*. So the set of all objects does not include ones without titles. I could fix this by making all objects be instead All objects in the catalog (via catalog.data.keys()) instead of all objects in the index, but I wanted to see if anyone had additional thoughts about this. -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Hey Chris, question for you
Chris McDonough wrote: Hi casey, Changes were recently made to Field/Keyword Indexes so that they will store empty items. An equivalent change could be made to TextIndexes... we'd need to think about that a bit. But for your purposes, you might want to start out attempting to write your operator implementation using Field and Keyword indexes... - C Michel Pelletier wrote: Hmm the reason for the current behavior was optimization by saving space not indexing empty values. The problem with your latter aproach is that all objects in the catalog may include object that don't have a title attribute at all. I'm not against indexing empty values though. -Michel My implementation does not modify the behavior of the indexes in any way, and I would like to keep it that way if possible. I have been able to (thus far) pull this off without compromises, which was my hope in the beginning. I guess the question here is given the query: spam != 'eggs' Should objects be returned that do not have an attribute spam at all. For the behavior to be intuitive, I would say yes, but that is just my opinion. I also though of an optimization that could eventually be included if this behavior is adopted. for example, take the following query expression: title == 'foo' and spam != 'eggs' As implemented, my query engine does the following: 1. Find items where title matches 'foo' (exact behavior depends on index type) 2. Find items where spam matches 'eggs' 3. Take the difference of all items in the index spam and the result of #2 4. Return the intersection of #3 and #1 To be intuitive (I use that term loosely) I think it should be: 1. Find items where title matches 'foo' 2. Find items where spam matches 'eggs' 3. Take the difference of all items in the catalog and the result of #2 4. Return the intersection of #3 and #1 Which can be optimized as: 1. Find items where title matches 'foo' 2. Find items where spam matches 'eggs' 3. Return the difference #1 and #2 If an or is used in place of the and, then the optimization doesn't apply though. One other thing: I noticed (with a colleague) that passing a list of values to a FieldIndex and a TextIndex results in nearly opposite behavior. The fieldIndex does a union on the results of querying against each item in the list whereas TextIndex does an intersection. This seemed highly inconsistent to me, another thread perhaps... -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope] Re: [Zope-dev] Re: Zcatalog bloat problem (berkeleydb is a solution?)
Chris McDonough wrote: abel deuring wrote: A text index (class SearchIndex.UnTextIndex) is definetely is a cause of bloating, if you use CatalogAware objects. An UnTextIndex maintains for Right.. if you don't use CatalogAware, however, and don't unindex before reindexing an object, you should see a huge bloat savings, because the only things which are supposed to be updated then are indexes and metadata which have data that has changed. [snip] What if any disadvantages are there to not calling unindex_object first? If there aren't any good ones, I think I'll be rewriting some of my own CatalogAware code... -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Traversal Barf
seb bacon wrote: I've been getting a puzzling error. It's not reliably reproduceable. It occurs perhaps one time in four when I'm using Opera. At first, it appeared only to be related to Opera, but now I'm getting the same error in netscape. I can just hit refresh and it works again. There's no sign of anything like ConflictErrors or the like on the console. Has anyone seen this before? What could it be? snip File /usr/local/Zope/lib/python/DocumentTemplate/DT_Let.py, line 146, in render (Object: rootpath=absolute_url()) File /usr/local/Zope/lib/python/DocumentTemplate/DT_Util.py, line 334, in eval (Object: absolute_url()) (Info: absolute_url) File string, line 0, in ? File /usr/local/Zope/lib/python/OFS/Traversable.py, line 119, in absolute_url (Object: Traversable) KeyError: SERVER_URL Cheers, seb I have seen a similar traceback which was due to a bug in CopyPaste.py, to which I have submitted a patch. It had to do with a lack of an acquisition wrapper at an inopportune time. It looks as though absolute_url() is being called without a proper wrapper around the object it is begin called for. What object is it begin called for? -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Traversal Barf
seb bacon wrote:
* Steve Alexander [EMAIL PROTECTED] [010711 07:59]:
KeyError: SERVER_URL
I have seen a similar traceback which was due to a bug in CopyPaste.py,
to which I have submitted a patch. It had to do with a lack of an
acquisition wrapper at an inopportune time. It looks as though
absolute_url() is being called without a proper wrapper around the
object it is begin called for.
Looks to me like absolute_url() is being called when absolute_url(1)
should be used.
I didn't know about the absolute_url(relative=1) switch. Do virtually
hosted envirnoments not have a SERVER_URL variable?
This actually points to a lack of an acquireable REQUEST object. If you
look at the code in absolute_url, it tries to acquire REQUEST and if it
can't, it sets it to {}. Then when it does a REQUEST['SERVER_URL'] later
on it gets a KeyError. I personally think this code is very brittle, but
it does work 99.99% of the time.
However, I don't think this is the problem.
(1) I'm not in a virtual hosting scenario
(2) it happens at fairly random intervals *on the same page*.
This is very weird. I would expect it to act consistently. I hate that!
I can be working on a page, then reload it, and I get the KeyError.
Then I can reload it again and the error goes. Then I go back to it,
reload it again, and the error appears. Reload it again and the error
remains. Reload it again and it disappears again... You get the
idea.
Is it truely random or an every-other reload sort of regularity? I have
a feeling you'll pick the former.
This makes it very difficult to debug. I left my computer on
overnight, without changing any app settings, and haven't seen the
error yet today.
My feeling is that Casey's right. It's happening on a CMF object
to which I've added BeforeTraverse hooks, which could possibly have
something to do with it.
Can you experiment with removing/changing these hooks?
Can you post the code for your object?
However, I've actually seen this problem
before, about a year ago, with a completely unrelated ZClass-based
objects. I remember then noticing that the error occured more often
with Netscape and Opera than IE. Of course, that theory is utter
nonsense seeing as HTTP is a connectionless protocol and the headers
each browser sends are effectively the same. However, in the absence
of a reproduceable error, I have to clutch at straws ;-)
seb
The browser differences may point to caching differences that make it
seem as though it is working.
Any DCians have any insights?
--
| Casey Duncan
| Kaivo, Inc.
| [EMAIL PROTECTED]
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Re: [Zope-dev] Traversal Barf
seb bacon wrote: OK, I've found out some more stuff about the problem. Of course, it wasn't really random. The culprit is a linked stylesheet. Every time I alter the sheet in some way, I get the SERVER_URL KeyError. Good, at least we know *when* it happens. I can't really see why this should be happening, though. The absolute_url() in question is in the main body of the document, not the stylesheet. Can we see the code for your page? What is the stylesheet, a DTML obj, ZStyleSheet, etc? Is perhaps the acquisition wrapper not getting applied to the document until after the linked objects are also downloaded, or something strange like that? No, that is client-side stuff. I haven't the time time to pursue this right now, but I'll attempt to make a simple, reproduceable example and submit it to the Tracker. But just in case I get time to debug it, where might I start? I'm not very familiar with the Traversal / Publishing stuff. I'm happy to help if I can. seb -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] masquerading python products as functions
Mick wrote: Hi, I am trying to make a product act like an external method, or dtmlmethod. Basically I have taken the minimal product and added a __call__ function. It works fine, and can be called as a function of the object that contains it. The problem is that the minimal objects namespace is also pushed onto the stack, and to get out of it I need to go through self.aq_parent. Reading though all the help I could find I tried adding the following (as DTMLMethod suggests.) Yes, the current object is at the top of the namespace in general. DTML Methods get around this with the client argument which defaults to None. AFAIK This represents the containment namespace to use for execution. #Documents masquerade as functions class func_code: pass func_code=func_code() func_code.co_varnames='self','RQUEST','RESPONSE' func_code.co_argcount=3 From what I read, this tells ZPublisher what arguments to pass by default to the object when it is called by traversal. Since client is omitted from co_varnames, it defaults to None, which tells the DT_String machinery (Which executes the DTML code) to do a containment-less execution. The DTML interpreter just does lookups though a namespace mapping passed in. Perhaps you could do something similar in your implementation. This doesn't seem to do anything to the namespace problem. Actually, reading through DTMLMethod and ExternalMEthod aren't helping at all. mapply.py seems equally unhelpful, though I can see some of what it is trying to do. Reading it also made me wonder why people say the above code make Documents masquerade as functions, it seems in mapply, that if __call__ is defined, then it is bound to f in mapply anyway. It seems to me to be in the __call__ method that things are important where namespaces are passed to HTML.__call__ I am obviously missing some fundamental points or sequences that would help me to understand this, I was hoping someone could point me in the right direction, either documentation, or some simple explanation, that would make reading through that code more obvious. I am running Zope 2.4.0b2 on python 2.1. regards Mick -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Vulnerability: attacking can get file list and directory
On Sunday 23 September 2001 08:24 pm, Joachim Werner allegedly wrote: Vulnerability: attacking can get file list and directory Tested on Win32 platform Example: telnet zopeserver 8080 PROPFIND / HTTP/1.0 enter enter enter list files and directory This tested on my site: security.instock.ru 8080 This one really seems to be the old WebDAV is not safe one. I guess it has been tackled already. You should be able to switch the file listing off for the Anonymous User in Zope 2.4.1 ... Joachim I totally agree. Tracebacks should not be visible to anonymous users! Although I would hesitate to call this a vulnerability, it ranks up there with the old ability to call objectIds by URL as anonymous. The less information that anonymous users can glean about the server, the better. /---\ Casey Duncan, Sr. Web Developer National Legal Aid and Defender Association [EMAIL PROTECTED] \---/ ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Vulnerability: attacking can get file list and directory
On Monday 24 September 2001 10:59 am, Shane Hathaway allegedly wrote: [snip] PDV just yields information you might give out anyway. But maybe we could deal with it anyway by writing an error.log instead of sending the traceback to the browser. What do you think? Shane My suggestion would be to hide it for all users except Managers by default. So that you aren't hosed if you don't have access to the server log files... /---\ Casey Duncan, Sr. Web Developer National Legal Aid and Defender Association [EMAIL PROTECTED] \---/ ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: Re: [Zope-dev] WebDav Bug? -- id != name?
On Thursday 20 September 2001 11:03 am, Kevin Dangoor allegedly wrote: [snip] Less magic is good. Longer term, it seems like this can be addressed by the Component architecture, can't it? Ideally the WebDAV Presentation Component would be given some clues about how to represent the object in WebDAV. Or maybe there will be a selection of WebDAV components that provide a variety of ways to deal with it. soapbox IMHO, I'd rather see the things that make using file extensions a pain in the first place go away. The death to index_html part of my proposal is a first step toward that. If web-oriented tools expect to be able to use file extensions, then Zope needs to do what people expect. ...while still balancing the desire to easily access objects and methods via Python. Tricky. Kevin Possibly just giving the user the ability to specify a name for an object separate from it's id so that an extension could be used could be a short-term solution. Or even just a property DAV_extension that lets you specify the file extension when using webDAV. When files are uploaded via WebDAV, the ext is stripped from the id and stored in this property. It is reappended by Zope when accessing the object through WebDAV. At least that way it is magic is under your direct control. -Casey ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] KeyError on UnIndex.keyForDocument
On Saturday 29 September 2001 04:29 pm, Chris McDonough allegedly wrote: Yeah, I could see this error being raised if you had just added an index to use as the sort index and it didn't have all objects indexed within it yet... And yes, if this is what it is, it's a bug. But it's structural and not operational... we need to think a bit about what it means to add an unpopulated index to an existing catalog. Currently you just need to know that you must reindex the catalog. - C What would the reaction be to changing this behavior. I have written some code that automatically populates the index when it is added. I personally think that reindexing every index just to populate one is grossly inefficient. I wrote this single index update because of the DocumentLibrary product which performs real-time document format conversions when documents are indexed. With a catalog of more than 100 MSWord documents, It is glacial to update the entire catalog. Although I have not put this code into a DocumentLibrary release yet, I would prefer to see it put directly into the catalog. Whaddya think? /---\ Casey Duncan, Sr. Web Developer National Legal Aid and Defender Association [EMAIL PROTECTED] \---/ ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] ZCatalog: path summary indices not generated
On Wednesday 03 October 2001 12:54 am, Shane Rowatt allegedly wrote: Zope Version: 2.4.1 on linux. When I tried to add a ZCatalog followed by finding objects to index using the default indices provided (path, summary, id, title etc), the 'path' and 'summary' indices are never generated. The 'summary' index is always an empty string and the 'path' index is 'None'. Summary is not defined (as you found) for most plain objects. CatalogAware defines it, but unfortunately without stripping tags. You might check out my DTMLDocumentExt code which renders the document and strips the html tags. It is an extension of some code Dieter posted online a while back. You can find it at: http://www.zope.org/Members/Kaivo/DTMLDocumentExt [snip] Surely someone else has come across these problems before using this basic catalog stuff?? Yup 8^) Shane Rowatt Astracon Inc. hth /---\ Casey Duncan, Sr. Web Developer National Legal Aid and Defender Association [EMAIL PROTECTED] \---/ ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] ZTables and/or Catalog plugable brains?
On Thursday 04 October 2001 07:34 pm, Jay, Dylan allegedly wrote: I tried using ZClasses but it seems to run slow and take up space. Instead I'm using Catalog (without ZCatalog) to contain the data. I'm presuming this will be quite efficient (comments welcome). Yup that should be pretty efficient. Plus you can index and query the thing fairly easily. Now to my question, How do Catalog plugable brains work? I've looked but can't see what the brain class has to look like to work. My first attempts don't seem to work. The classes are created but don't contain the data. Is the record data passed into the constructor? I'm not an expert on brains per se, but my understanding is that they allow you to wrap functionality from a particular class around data stored in a table (such as a Catalog or an external database) without making each record an instance of the class. This is how, when the Catalog returns data, you get the getURL and getObject methods for each record (among others). TinyTable and Z SQL Methods also support this functionality, and it is exposed in the management interface. This would allow you to store the actual data as regular metadata elements in the Catalog, and get objects out when you query it. It would avoid storing the data twice, once in the objects and again in the metadata and all of the disadvantages this causes in terms of storage and synchronization. Also in my searches I came across lots of references to something called ZTables. This seems to be a Catalog with a UI that is about lots of tabular information (rather than a ZCatalog which is specialized to replicating and indexing existing objects). Is this dead? If not where is it? If so, why? AFAIK, Catalog contains the only remaining remnants of ZTables in Zope. It seems like a really good idea to me. It seems to be there are times when objects (esp ZClasses) are too heavy? ZClasses impose a performance penalty due to their inherent complexity and overhead. You would do much better creating a straight Python class for applications where performance and overhead per record is an issue. I personally avoid using ZClasses for everything but the simplest custom objects. Anyone with comments about how ZPatterns fits into all of this would also be welcome. My understanding is that ZPatterns is for abstracting the application from the storage. It is most beneficial for creating storage-independent applications. It would benefit you if that is a requirement, no so much if not. An example might be an application with data in objects, catalogs and external databases. ZPatterns would let you create an abstraction layer so that the application would not need to be aware of where any given piece of data was coming from. You could therefore change your data storage later and ideally you would only have to change the abstraction layer, not the application itself. /---\ Casey Duncan, Sr. Web Developer National Legal Aid and Defender Association [EMAIL PROTECTED] \---/ ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] standard_error_message and displaying non-html content.
On Thursday 18 October 2001 10:19 am, Noel Duffy allegedly wrote: [snip] Just to clarify, I am only concerned at present with the code in HTTPResponse that, in the case of an exception, scans for !doctype html or html, and wraps them in html if these are not found. (Seb, does this cover the problems you experienced?) I think there is a more general problem of making Zope content-neutral, but that is a proposal for another time. Regards, Noel Duffy. I think the way to proceed is to create a fishbowl proposal to change ZPublisher so that no HTML wrapping takes place if the Content-Type is some thing other than text/html. Unfortunately changing magic like this has a tendancy to break code that unwittingly relies on it. The fishbowl allows everyone to give that due consideration. I think this is a great idea BTW. /---\ Casey Duncan, Sr. Web Developer National Legal Aid and Defender Association [EMAIL PROTECTED] \---/ ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] How to get the FULL path of an uploaded file?
On Thursday 18 October 2001 02:37 pm, Craeg K. Strong allegedly wrote: Does anyone know offhand how to get the FULL path of an uploaded file? Some browsers (IE notably) supply this information. Most others do not, they only provide the file name. It is not however, terribly useful to the server or secure to store this information unless such data is not publically accessible. I am using the standard HTML input type=file within a form inside a DTML document. Inside my python method, I am getting a ZPublisher.HTTPRequest.FileUpload object. Fine. This stuff wraps the standard python cgi module to give you access to the headers and contents of the file. You can use a FileUpload the same way you would use a file. The problem is: the name of the FileUpload is the leaf name of the file, but not the entire path. Does anyone know how to get the FULL PATHNAME as listed in the input field in the HTML form? I believe Python is being too clever by half and by the time I get my grubby hands on it, the value is gone. This is not a Python issue, many browsers simply do not provide this information when the data is posted. The only thing I could come up with was an awful little JavaScript hack where I snag the value from the input field into another hidden field using OnChange/OnClick/OnBlur, and grab it later. That is probably the best way I can think of. Don't feel bad though, Javascript code is always a hack! 8^) Any suggestions would be greatly appreciated. Thanks! (Should I repost this question on a python-dev list? hm) --Craeg /---\ Casey Duncan, Sr. Web Developer National Legal Aid and Defender Association [EMAIL PROTECTED] \---/ ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] Small ZMI enhancement
When working in versions, it is currently a pain to get to the current version you are working in. Since the ZMI displays the path to the current version at the top, I thought, why now make this a link to the version so that you can get there in one click and manage it? Here is the patch to lib/python/App/dtml/manage_tabs.dtml: *** manage_tabs.dtml~ Fri Oct 19 11:34:11 2001 --- manage_tabs.dtmlFri Oct 19 11:37:48 2001 *** *** 161,167 dtml-if Zope-Version div class=system-msg ! emYou are currently working in version dtml-var Zope-Version html_quote/em /div /dtml-if /dtml-unless --- 161,167 dtml-if Zope-Version div class=system-msg ! emYou are currently working in version a href=dtml-SERVER_URL;dtml-Zope-Version;/manage_maindtml-var Zope-Version html_quote/a/em /div /dtml-if /dtml-unless Anyone object to putting this in the core? Enjoy. /---\ Casey Duncan, Sr. Web Developer National Legal Aid and Defender Association [EMAIL PROTECTED] \---/ ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
