RE: [Zope-dev] ZSQL and Normalized databases (or why ZSQL sucks)
...I mean that: SELECT tab1.col1, tab2.col1 FROM ... etc ... Does not expose 'tab1.col1' and 'tab2.col1'. In otherwords, it doesn't gracefully handle name clashes. I realize that calling out the variable 'tab1.col1' out of the namespace is a pain, but (hopefully) in the future it would be made easier I havent followed the entire conversation so forgive me if we are on the same page but in different books. Have you tried to alias the column names? e.g.: SELECT tab1.col1 AS COL1_A, tab2.col1 AS COL1_B FROM etc... -Original Message- From: The Doctor What [mailto:[EMAIL PROTECTED]] Sent: Friday, April 20, 2001 10:21 AM To: [EMAIL PROTECTED] Subject: Re: [Zope-dev] ZSQL and Normalized databases (or why ZSQL sucks) * Adrian Hungate ([EMAIL PROTECTED]) [010420 05:06]: May be I am misunderstanding your problem here, but are you suggesting that SELECT tab1.col1 col1, tab2.col1 col2 FROM ... etc ... Does not expose 'col1' and 'col2' in the namespace for you? This is not my experience. Ok, I only have about 50 ZSQL methods on my intranet but they are all complex queries with column naming clashes. If it failed to work as you are suggesting, I would not have continued using Zope - Database connectivity was one of my criteria. I mean that: SELECT tab1.col1, tab2.col1 FROM ... etc ... Does not expose 'tab1.col1' and 'tab2.col1'. In otherwords, it doesn't gracefully handle name clashes. I realize that calling out the variable 'tab1.col1' out of the namespace is a pain, but (hopefully) in the future it would be made easier. Perhaps like so: dtml-var name='tab1.col1' (note single quotes) The normality (or abnormality) of your databases should make no difference, (Except to how complex your individual SQL statements become). What database are you running against? Maybe you have hit a database connector bug? Postgresql. I've tried all three of the DAs: Psyco, Popy and PostresDA [Nice Example Snipped] What DB was that? The syntax isn't what I expect from Postgres, Tandem and MySQL. As far as the 'foo=0' example, if you set foo to 0, and do nothing in between to change it, of course a test for not equal to 0 will fail, what would you expect? Here is the example again, but better: paramfoo:int=0/param dtml-if expr="foo 0"Not Zerodtml-elseZero/dtml-if If called like so: dtml-var expr="zsql_example(foo=200)" It will ALWAYS print 'Zero'. This makes it hard to do something with a param that defaults to nothing like: paramcategory_id=""/param SELECT url.id, url.name dtml-if category_id, xref_url_category.categoryid as category_id, /dtml-if FROM url dtml-if category_id, xref_url_category /dtml-if dtml-sqlgroup where dtml-if category_id dtml-sqltest category_id column="xref_url_category.categoryid" type="int" dtml-and xref_url_category.urlid = url.id /dtml-if /dtml-sqlgroup You can't even replace the param with "category_id:int=0" and then check for category_id = 0 in the dtml-ifs. I finished my project, so I'm happy for the moment. I have another ZSQL project (a DVD, Comic Book and Video tracker for my Manga and Anime), so I'll be back. Thanks to everyone who spent time to help out. Ciao! -- Who are you going to believe, me or your own eyes? -- Groucho Marx The Doctor What: Guru to the Godshttp://docwhat.gerf.org/ [EMAIL PROTECTED] KF6VNC ___ 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] ZODBCA questions...
You may be interested in recent developments: http://www.zope.org/Wikis/DevSite/Proposals/DatabaseStategy/HistoricalRevisi ons/827.44494.7026.26188 I dont know why the DC folks havent stayed on top of ODBC. They should. Plenty of Zope/SQL Server users. -Original Message- From: Mark Pratt [mailto:[EMAIL PROTECTED]] Sent: Tuesday, April 10, 2001 11:46 AM To: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: [Zope-dev] ZODBCA questions... Hi Andy, I would venture a guess that your ZODBC problems have to do with the DA being Level 1. visit the somewhat dated URL: http://www.zope.org/Members/petrilli/DARoadmap for details on what Level 1 through 3 represent. For an upcoming project we will need to work with MS SQL server as well so I've been discussing with Paul a bit about what it would take to fund a L3 DA. You might want to send him an email. Regards, Mark -- mark pratt (managing director) [EMAIL PROTECTED] beehive elektronische medien GmbH http://www.beehive.de phone: +49 30 847-82 0 fax: +49 30 847-82 299 ___ 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 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] ZODBCA questions...
This is true. But it's likely the aame reason we dont have an ecommerce module or an XSLT processor or a catalog which allows for easy indexing of pdfs or our own object-relational mapping story, or, or, or, or. It would be naive of me to assume what reason that is, but I just wondered why ZODBC DA was left in it's current (somewhat dated, somewhat stale...but like a old chocolate chip cookie, you'll still eat it) state. ___ 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] ZODBCA questions...
After reading this about Level 2: "While a sub-optimal solution, it should be usable on any application that has minimal, or infrequent, database access" Then about the ZODBC DA itself: "Long term progress. See information below on the future of a X/Open CLI interface DA." ...blah blah blah... "we will be transitioning to a new design for the ODBC DA, as well as integrating support for IBM DB2 into the same DA." I would not use ZODBC SQL Server for my critical business apps as it looks like its going away. -Original Message- From: Andy McKay [mailto:[EMAIL PROTECTED]] Sent: Monday, April 09, 2001 3:20 PM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: Re: [Zope-dev] ZODBCA questions... According to the Database Adapter RoadMap (http://www.zope.org/Members/petrilli/DARoadmap), ZODBCA will be level 2 compliant at one point. Yet ZODBCA hasnt been touched since 1999. Is ZODBCA level 2 compliant? Cheers. -- Andy McKay. - Original Message - From: "Bryan Baszczewski" [EMAIL PROTECTED] To: "'Andy McKay'" [EMAIL PROTECTED] Sent: Monday, April 09, 2001 11:28 AM Subject: RE: [Zope-dev] ZODBCA questions... Andy, We experienced bigtime problems with ZODBC too. ZODBC locked all other requests out when waiting for a complex query. Upgrade to ZmxODBC database adapter (search on zope.org to find it). We found ZmxODBC to be alot better without locking requests. BUT...it costs money(!) and seems no one else uses this though as SQL Server isnt widely supported by Digital Creations. A shame really being that SQL Server is an excellent database. For verificaion of your problem, check out the plans for ZODBC the "Database Adapter RoadMap". -Original Message- From: Andy McKay [mailto:[EMAIL PROTECTED]] Sent: Monday, April 09, 2001 1:46 PM To: [EMAIL PROTECTED] Subject: [Zope-dev] ZODBCA questions... Im getting some performance issues with my sites, im connecting Zope to a SQL Server (not using ZEO). I've got suspicion, but no proof, that its ZODBCA that is the problem. Does anyone have experiences with this on large sites and / or a suggestion to replace it? Cheers. -- 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 ) ___ 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] Windows FAQ / Help area?
How about database access (i.e. ODBC adapters) -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Andy McKay Sent: Monday, April 09, 2001 3:51 PM To: [EMAIL PROTECTED] Subject: [Zope-dev] Windows FAQ / Help area? Just thinking how many little tidbits I know related to running Zope on Windows that are very platform and installation specific. Do people think it would be a good idea to start at least a wiki / faq section somewhere covering this? Do other windows users think there is enough stuff to put in there? Things I can think of off the top of my head: windows service, getting stdout when running as a service and I was about to add ZEO, but thats been fixed... Cheers. -- 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 ) ___ 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] Windows FAQ / Help area?
Your answer: http://www.zope.org/Members/djay/ZmxODBC -Original Message- From: Andy McKay [mailto:[EMAIL PROTECTED]] Sent: Monday, April 09, 2001 4:02 PM To: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: [Zope-dev] Windows FAQ / Help area? when I find the answer... ;) -- Andy McKay. - Original Message - From: "Bryan Baszczewski" [EMAIL PROTECTED] To: "'Andy McKay'" [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Monday, April 09, 2001 1:10 PM Subject: RE: [Zope-dev] Windows FAQ / Help area? How about database access (i.e. ODBC adapters) -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Andy McKay Sent: Monday, April 09, 2001 3:51 PM To: [EMAIL PROTECTED] Subject: [Zope-dev] Windows FAQ / Help area? Just thinking how many little tidbits I know related to running Zope on Windows that are very platform and installation specific. Do people think it would be a good idea to start at least a wiki / faq section somewhere covering this? Do other windows users think there is enough stuff to put in there? Things I can think of off the top of my head: windows service, getting stdout when running as a service and I was about to add ZEO, but thats been fixed... Cheers. -- 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 ) ___ 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] SQL Server ..?
I am curious of how popular SQL Server is among Zope developers. We have recenly upgraded from SQL 7 to 2000 and noticed most of the database support for Zope centers around Oracle, MySQL, Postgres, Sybase, etc... How many people are using this ZmxODBC database adapter? And what kind of problems/issues/praise do you have? Any info would be appreciated. Bryan Baszczewski Software Engineer/Technology Strategist 2s2i, Inc. www.2s2i.com phone: (703)534-9800 x-203 fax: (703)995-4866 "Because word of mouth has gone global, there's e-Intelligence from 2s2i." ___ 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] ZmxODBC DA
I am curious of how popular SQL Server is among Zope developers. We have recenly upgraded from SQL 7 to 2000 and noticed most of the database support for Zope centers around Oracle, MySQL, Postgres, Sybase, etc... How many people are using this ZmxODBC database adapter? And what kind of problems/issues/praise do you have? Bryan Baszczewski Software Engineer/Technology Strategist 2s2i, Inc. www.2s2i.com phone: (703)534-9800 x-203 fax: (703)995-4866 "Because word of mouth has gone global, there's e-Intelligence from 2s2i." ___ 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] Zope/Win2K/Crash ...
Anyone else using Zope on Win2K? We have recently installed Zope as a production server on Win2K (SP4) and everything was fine for the first couple of weeks. We started a little monitoring program which hits Zope every 5 seconds, and noticed Zope started to crash intermitently. In the NT Event Log I find: "The description for Event ID ( 3 ) in Source ( PythonService ) could not be found. It contains the following insertion string(s): Error getting traceback - traceback.print_tb() failed, pywintypes.api_error, (1450, 'CreateProcess', 'No error message is available')." What is this telling me? That I ran out of memory? Bryan Baszczewski Software Engineer/Technology Strategist 2s2i, Inc. www.2s2i.com phone: (703)534-9800 x-203 fax: (703)995-4866 "Because word of mouth has gone global, there's e-Intelligence from 2s2i." ___ 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] ZSQl Cache
Anyone have an idea of what the optimal cache time is (all things considered .. "normal" circumstances) for a ZSQL query = 50 rows? Does Zope tend to lag or suck too much memory at some point? Bryan Baszczewski Software Engineer/Technology Strategist 2s2i, Inc. www.2s2i.com phone: (703)534-9800 x-203 fax: (703)995-4866 "Because word of mouth has gone global, there's e-Intelligence from 2s2i." ___ 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: ZODBC problem
Alan, I am having a similar lock-out problem while performing a complex query on SQL Server 2K. All other hits cannot connect until the query returns the results. My research has so far taken me here: http://www.zope.org/Members/petrilli/DARoadmap Which is telling me I am probably using at most a Level-2 DA with my ZODBC. And then here: http://www.zope.org/Members/djay/ZmxODBC/ZmxODBC_0_0_2.tgz/README Which is a Level-3 mxZODBC DA (multithreaded). If anyone sees a problem with what I am about to do, let me know. What do you think? -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Capesius, Alan Sent: Wednesday, March 07, 2001 12:31 PM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: [Zope-dev] RE: ZODBC problem Thanks Dieter, I was kinda looking for a solution, I reviewed the mailing lists but do not see any solutions. I've done some more testing here: Summary: The user selects an involved financial report. The report takes about 55 seconds for Zope to prepare. The first second is the SQL server request and reply. The remaining time is Zope processing (dual 200mhz NT box). My queries are SELECT JOINS. No tables are modified at the server. The problem I see here is that Zope/ZODBCDA is holding the connection to SQL open via ODBC until all processing is complete and then issuing an SQL statement: IF @@TRANCOUNT0 COMMIT TRAN Zope could free up this connection after one second. (at least in this case) Until Zope does the commit, other users are locked out. For read only queries, there is no need to have the request under transaction control. In any case, Zope should be able to early release the SQL connection and then process on the results. Certainly increasing processor speed will mask this problem and provide better response to users, but I'm hoping for a real fix. Thanks, Alan Network Monitor trace Wed 03/07/01 10:51:50 c:\cap1.TXT Frame TimeSrc MAC Addr Dst MAC Addr Protocol 1 4.413 006008F6062B COMPAQ851F04 TCP 2 4.413 006008F6062B COMPAQ851F04 TCP 3 4.413 006008F6062B COMPAQ851F04 TCP [] 193 5.072 006008F6062B COMPAQ851F04 TCP 194 5.073 COMPAQ851F04 006008F6062B TCP 195 5.090 COMPAQ851F04 006008F6062B TCP 196 5.090 006008F6062B COMPAQ851F04 TCP 197 5.090 006008F6062B COMPAQ851F04 TCP 198 5.091 COMPAQ851F04 006008F6062B TCP 199 5.109 COMPAQ851F04 006008F6062B TCP 200 5.127 COMPAQ851F04 006008F6062B TCP // SQL server goes idle after this // python DTML processing occurs here 201 10.834 006008F6062B COMPAQ851F04 TCP // not sure what this is, Data is 0xA8 202 10.834 COMPAQ851F04 006008F6062B TCP // reply, data is empty // page returns to user at 60 second mark // then Zope closes the connection 203 60.385 COMPAQ851F04 006008F6062B TCP SQL: IF @@TRANCOUNT0 COMMIT TRAN 204 60.386 006008F6062B COMPAQ851F04 TCP 205 60.601 COMPAQ851F04 006008F6062B TCP Capesius, Alan writes: ... with further testing I have determined that the Zope server itself is not locking up, but rather requests to the database (MS SQL7 via ZODBCDA) seem to be queueing up. My memory tells me faintly that such an issue has already been discussed in the mailing lists (zope, zope-dev). When I remember right, ZODBCDA synchronizes all database requests -- searchable list archives... Dieter ___ 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 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: next-batches
I found this in some Zope documentation. It wont give you "1,2,3,4,5...10"
it gives "(1-10)(11-20)(21-30)...". Monkey with it a little and you'll get
it. Beware it will call your External Method or ZSQL as many times/10.
dtml-in expr="SOME_EXTERNAL_METHOD(REQUEST)" previous orphan=1 size=10
start=qs
dtml-in previous-batches mapping
dtml-unless sequence-start, /dtml-unless
a href="dtml-var document_iddtml-var sequence-query
qs=dtml-var batch-start-number"
(dtml-var batch-start-number - dtml-var batch-end-number)/a
/dtml-in
/dtml-in
dtml-in expr="SOME_EXTERNAL_METHOD(REQUEST)" next orphan=1 size=10
start=qs
dtml-in next-batches mapping
dtml-unless sequence-start, /dtml-unless
a href="dtml-var document_iddtml-var sequence-query
qs=dtml-var batch-start-number"
(dtml-var batch-start-number - dtml-var batch-end-number)/a
/dtml-in
/dtml-in
dtml-in expr="SOME_EXTERNAL_METHOD(REQUEST)" orphan=1 size=10 start=qs
dtml-var sequence-index)"
dtml-var expr="_.getitem('sequence-item')[1]"
dtml-var expr="_.getitem('sequence-item')[2]"
/dtml-in
-Bryan
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf
Of Brett Carter
Sent: Wednesday, March 07, 2001 6:34 PM
To: [EMAIL PROTECTED]
Subject: [Zope-dev] dtml-in: next-batches
Does anybody have an example of how to use the supposed next-batches
mapping returned by dtml-in?
I'm trying to build a google-like pageing feature into my application,
so we just show the first 5 results, then have a link to each next
page, ie "1,2,3,4..."
Thanks,
-Brett
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[Zope-dev] Zope Performance - Windows 2000 .. Newbie
I am getting some serious Zope lag time (15-20 seconds) for simple HTML pages when also trying to hit the same port with data requests. The data requests are = 50 records of text data and SQL Server is optimized (meaning the querys dont take that long, just the connection to Zope). We are using port 8080 on Windows 2000 and was wondering if there is some kind of queue or prioritizing of Zope requests? If so, how can I work around this? Thanks in advance! ___ 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] Zope newbie question
Within my dtml, I am retrieving a text field from a database and passing this field to a javascript function. However, the text field can be any length of characters and dtml keeps cutting the text off at no pre-set limit making it impossible to pass this field to javascript. The javascript is going to take this text and pop it up in another window for the user to read. I checked the html source and everything looks fine, but when I execute it gives an "unterminated string" error. Could Zope be causing this? Bryan ___ 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 )
