Re: [Zope-dev] ZCatalog stuff
"R. David Murray" wrote: On Thu, 22 Feb 2001, Chris Withers wrote: Apart from that, any ideas how I'd search for a record where the indexed attribute is blank or the secondary sort stuff? Somebody contributed a patch for the secondary sort stuff a while back. Whether it still works with 2.3.0 is a good question. Any idea where I'd find that? I may need to give it a go... I also remember a *long* time ago (back when I was first starting with zope about a year ago) someone posting a method for picking up all the records in a catalog with a blank value for a field. How you'd find it in the mail archives, though, I have no clue, nor do I remember what the method involved. Likewise with this. The only solution I can think of at the moment is to have a seperate 'x_is_blank' index that set to 'not x', but that seems terribly inefficient to me :-S Any ideas gratefully recieved :-) Chris ___ 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 stuff
Johan Carlsson wrote:
Casey Duncan [EMAIL PROTECTED] wrote:
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?
'used' tells you the names of the indexes which actually
participated in the search (as distinct from those you
asked for).
What does this meen?
Example, What's the different between:
searchResults(used=(index1,index2), index1='kalle', index2='kaviar')
and;
Damn, where's this documented?
I think this is _exactly_ what I've been looking for for ages, especially, I'm
guessing, that if you don't specify 'used' then:
1. It's assumed all indexes take part in the search
2. All parameters that aren't supplied are assumed to be blank, and therefore
will match anything?
Am I on the right track?
Furthermore, is there any way I can tell ZCatalog that nothing means nothing,
not everything?
For example, if I do searchResults(age=''), I want only records with a blank age
record, _not_ all the records.
Okay while I'm here, one final one.
We have the sort_on and sort_order parameters, they'll return stuff ordered
like:
Aardvark
Badger
anteater
bird
Whereas most humans would think the following would be more readable:
Aardvark
anteater
Badger
bird
I guess ZCatalog uses cmp somewhere along the line. IS there any way I can pass
in a different cmp function for a given index?
Hah, just thought of one last one ;-)
Okay, we have sort_on, which lets me sort on one index. Is there any way I can
provide a secondary sort key?
something like
searchResults(age='',sort_on=(('lastname','normal'),('firstname','normal'),'('salary','reverse')))
would eb a dream.
Wow, that turned into a ZCatalog wishlist... any ideas if any of it is
available, and if not, hwo hard it would be to achieve?
cheers,
Chris
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Re: [Zope-dev] ZCatalog stuff
Tres Seaver wrote: Chris, this necrohippophilic sadism has to stop! Erm? I think my education is lacking... what does that mean? :-S "most humeans" does *not* map to "English speakers who prefer case-insensitive collation." I disagree but it's not worth arguing about. However, the people who pay my salary feel that way which means I care ;-) case-insensitive search / sort, then create a method on your object which does the approprate case-flattening, and index that instead of the "real" attribute. Thanks, I always forget the flexibility of ZCatalog :-) That said, how hard would it be to alter ZCatalog so you could override the comparison function it uses? It feels like a ,cmp=cmp argument to the added search index consructor, then a self._cmp = cmp in the constructor, followed by a query and replace on cmp with self._cmp in the search index source. But I might be completely wrong :-( Apart from that, any ideas how I'd search for a record where the indexed attribute is blank or the secondary sort stuff? cheers, Chris ___ 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 stuff
Chris Withers wrote: Tres Seaver wrote: Chris, this necrohippophilic sadism has to stop! Erm? I think my education is lacking... what does that mean? :-S necrohippo philic sadism dead-horse-loving act of deliberate harm upon -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ 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 stuff
On Thu, 22 Feb 2001, Chris Withers wrote: Tres Seaver wrote: Chris, this necrohippophilic sadism has to stop! Erm? I think my education is lacking... what does that mean? :-S "Beating a dead horse". :) "most humeans" does *not* map to "English speakers who prefer case-insensitive collation." I disagree but it's not worth arguing about. However, the people who pay my salary feel that way which means I care ;-) case-insensitive search / sort, then create a method on your object which does the approprate case-flattening, and index that instead of the "real" attribute. Thanks, I always forget the flexibility of ZCatalog :-) That said, how hard would it be to alter ZCatalog so you could override the comparison function it uses? It feels like a ,cmp=cmp argument to the added search index consructor, then a self._cmp = cmp in the constructor, followed by a query and replace on cmp with self._cmp in the search index source. But I might be completely wrong :-( The comparison function is built into the structure the of the index, and is not swappable "on-the-fly". When the catalog allows "drop-in" indexes, then you could define a CaseInsensitifeUnIndex class which implemented the semantics you prefer (but I still think it should be done at the application level, as I described above). Apart from that, any ideas how I'd search for a record where the indexed attribute is blank or the secondary sort stuff? "Trust the source, Luke!" is the best answer I've got. Tres. -- === Tres Seaver[EMAIL PROTECTED] Digital Creations "Zope Dealers" http://www.zope.org ___ 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 stuff
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." The simple fact is many non-technical users dont give a hoot about the underlying python reasons or computer science, its just common to see a case-insensitive sort. And yes it can be done in ZCatalog and dtml-in with a little fiddling. -- Andy McKay. ___ 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 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 stuff
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^) Why not ? (sometimes) he makes sense ;) -- Andy McKay. ___ 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 )
