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Re: [Zope] DCOracle and Python dumps core with Oracle8i [Q]
by Bruno Mattarollo 23 Nov '99

23 Nov '99

Beware all Zope readers, here comes a pretty unreadable result... Ouch! Hello Anthony, Here is the result from the 'where command' #0 0xfef45c8c in realfree () #1 0xfef463d0 in _free_unlocked () #2 0xfef46320 in free () #3 0x49a54 in string_dealloc (op=0x755a90) at stringobject.c:175 #4 0x46bcc in dict_dealloc (mp=0x649eb8) at dictobject.c:484 #5 0x46c04 in dict_dealloc (mp=0x646690) at dictobject.c:487 #6 0xfeec35d8 in subclass_dealloc (self=0x646668) at ./../Components/ExtensionClass/ExtensionClass.c:2982 #7 0x46990 in PyDict_DelItem (op=0x5a3f68, key=0x645530) at dictobject.c:419 #8 0xfed51a94 in gc_item (self=0x593cd0, key=0x645530, v=0x646668, now=58740, dt=126) at ./cPickleCache.c:148 #9 0xfed52028 in maybegc (self=0x593cd0, thisv=0x610fd8) at ./cPickleCache.c:299 #10 0xfed529f8 in cc_subscript (self=0x593cd0, key=0x646618) at ./cPickleCache.c:592 #11 0x36248 in PyObject_GetItem (o=0x593cd0, key=0x646618) at abstract.c:237 #12 0x1e5d0 in eval_code2 (co=0x1a6b38, globals=0x0, locals=0x4a0cc, args=0x72c8b0, argcount=0, kws=0x5beb08, kwcount=0, defs=0x23906c, defcount=4, owner=0x24ee88) at ceval.c:868 #13 0x218fc in call_function (func=0x2807d0, arg=0x4d3288, kw=0x0) at ceval.c:2484 #14 0x213a8 in PyEval_CallObjectWithKeywords (func=0x733b58, arg=0x5beac0, kw=0x0) at ceval.c:2322 #15 0x38660 in PyObject_CallObject (o=0x733b58, a=0x5beac0) at abstract.c:1359 #16 0xfed7ba34 in load_binpersid (self=0x77d8a8) at ./../Components/cPickle/cPickle.c:2955 #17 0xfed7cec8 in load (self=0x77d8a8) at ./../Components/cPickle/cPickle.c:3544 #18 0xfed7d700 in Unpickler_load (self=0x77d8a8, args=0xbbdd8) at ./../Components/cPickle/cPickle.c:3859 #19 0x214f0 in call_builtin (func=0x5d3a78, arg=0xbbdd8, kw=0x0) at ceval.c:2359 #20 0x213bc in PyEval_CallObjectWithKeywords (func=0x5d3a78, arg=0xbbdd8, kw=0x0) at ceval.c:2324 #21 0x1fe14 in eval_code2 (co=0x23e588, globals=0x0, locals=0x0, args=0xbbdd8, argcount=0, kws=0x5d3a78, kwcount=0, defs=0x0, defcount=0, owner=0x24ee88) at ceval.c:1654 #22 0x218fc in call_function (func=0x2809d8, arg=0x752538, kw=0x0) at ceval.c:2484 #23 0x213a8 in PyEval_CallObjectWithKeywords (func=0x6adc70, arg=0x657fa0, kw=0x0) at ceval.c:2322 #24 0x38660 in PyObject_CallObject (o=0x6adc70, a=0x657fa0) at abstract.c:1359 #25 0xfeda1dd0 in callmethod1 (self=0x6adc70, name=0x657fa0, arg=0x5a6740) at ./cPersistence.c:143 #26 0xfeda2e40 in Per_getattr (self=0x5a6740, oname=0x795b80, name=0x795b95 "equence-key", getattrf=0xfeebd678 <EC_findiattro>) at ./cPersistence.c:527 #27 0xfeda2f24 in Per_getattro (self=0x5a6740, name=0x795b80) at ./cPersistence.c:542 #28 0x48e74 in PyObject_GetAttr (v=0x5a6740, name=0x795b80) at object.c:436 #29 0xfed23fec in Wrapper_getattro_ (self=0x5d3a18, oname=0x795b80, sob=1, sco=1) at ./../Components/ExtensionClass/Acquisition.c:505 #30 0xfed243a8 in Wrapper_getattro (self=0x5d3a18, oname=0x795b80) at ./../Components/ExtensionClass/Acquisition.c:573 #31 0x48e74 in PyObject_GetAttr (v=0x5d3a18, name=0x795b80) at object.c:436 #32 0xfece29b4 in InstanceDict_subscript (self=0x5fecf0, key=0x795b80) at ./cDocumentTemplate.c:200 #33 0x36248 in PyObject_GetItem (o=0x5fecf0, key=0x795b80) at abstract.c:237 #34 0xfece2e18 in MM_cget (self=0x655118, key=0x795b80, call=1) at ./cDocumentTemplate.c:369 #35 0xfece34bc in MM_subscript (self=0x655118, key=0x795b80) at ./cDocumentTemplate.c:553 #36 0x36248 in PyObject_GetItem (o=0x655118, key=0x795b80) at abstract.c:237 #37 0x1e5d0 in eval_code2 (co=0x2c8ee0, globals=0xa5f74, locals=0x4a0cc, args=0x6ade7c, argcount=2, kws=0x0, kwcount=0, defs=0x0, defcount=0, owner=0x2df168) at ceval.c:868 #38 0x218fc in call_function (func=0x2df0f0, arg=0x6ade70, kw=0x0) at ceval.c:2484 #39 0x213a8 in PyEval_CallObjectWithKeywords (func=0x6addd0, arg=0x771978, kw=0x0) at ceval.c:2322 #40 0x21578 in call_builtin (func=0x72c778, arg=0x771978, kw=0x0) at ceval.c:2372 #41 0x213bc in PyEval_CallObjectWithKeywords (func=0x72c778, arg=0x771978, kw=0x0) at ceval.c:2324 #42 0x38660 in PyObject_CallObject (o=0x72c778, a=0x771978) at abstract.c:1359 #43 0xfece3ba8 in render_blocks_ (blocks=0x653bc8, rendered=0x72cad8, md=0x655118, mda=0x771978) at ./cDocumentTemplate.c:822 #44 0xfece3cbc in render_blocks (self=0xfece4708, args=0x7523f8) at ./cDocumentTemplate.c:846 #45 0x214f0 in call_builtin (func=0xf8a18, arg=0x7523f8, kw=0x0) at ceval.c:2359 #46 0x213bc in PyEval_CallObjectWithKeywords (func=0xf8a18, arg=0x7523f8, kw=0x0) at ceval.c:2324 #47 0x1fe14 in eval_code2 (co=0x5fc2c0, globals=0x0, locals=0x2, args=0x7523f8, argcount=0, kws=0xf8a18, kwcount=0, defs=0x0, defcount=0, owner=0x600010) at ceval.c:1654 #48 0x218fc in call_function (func=0x5fff48, arg=0x6e6460, kw=0x0) at ceval.c:2484 #49 0x213a8 in PyEval_CallObjectWithKeywords (func=0x773280, arg=0x7532b8, kw=0x0) at ceval.c:2322 #50 0x38660 in PyObject_CallObject (o=0x773280, a=0x7532b8) at abstract.c:1359 #51 0xfece3ba8 in render_blocks_ (blocks=0x5d4548, rendered=0x6eb1b8, md=0x655118, mda=0x7532b8) at ./cDocumentTemplate.c:822 #52 0xfece3af4 in render_blocks_ (blocks=0x5d3d90, rendered=0x6eb1b8, md=0x655118, mda=0x7532b8) at ./cDocumentTemplate.c:797 #53 0xfece3cbc in render_blocks (self=0xfece4708, args=0x733798) at ./cDocumentTemplate.c:846 #54 0x214f0 in call_builtin (func=0xf8a18, arg=0x733798, kw=0x0) at ceval.c:2359 #55 0x213bc in PyEval_CallObjectWithKeywords (func=0xf8a18, arg=0x733798, kw=0x0) at ceval.c:2324 #56 0x1fe14 in eval_code2 (co=0x2c6400, globals=0x0, locals=0x0, args=0x733798, argcount=0, kws=0xf8a18, kwcount=0, defs=0x2de934, defcount=2, owner=0x0) at ceval.c:1654 #57 0x218fc in call_function (func=0x2dfe68, arg=0x500dc0, kw=0x0) at ceval.c:2484 #58 0x213a8 in PyEval_CallObjectWithKeywords (func=0x2dfe68, arg=0x500dc0, kw=0x6b5248) at ceval.c:2322 #59 0xfeeba8b0 in callMethodWithPossibleHook (inst=0xfe050, meth=0x2dfe68, args=0x500dc0, kw=0x6b5248) at ./../Components/ExtensionClass/ExtensionClass.c:755 #60 0xfeebabc4 in PMethod_call (self=0x5a2098, args=0x500dc0, kw=0x6b5248) at ./../Components/ExtensionClass/ExtensionClass.c:825 #61 0x2136c in PyEval_CallObjectWithKeywords (func=0x5a2098, arg=0x500dc0, kw=0x6b5248) at ceval.c:2320 #62 0x4c168 in builtin_apply (self=0x0, args=0x4ff8a0) at bltinmodule.c:126 #63 0x214f0 in call_builtin (func=0xbb868, arg=0x4ff8a0, kw=0x0) at ceval.c:2359 #64 0x213bc in PyEval_CallObjectWithKeywords (func=0xbb868, arg=0x4ff8a0, kw=0x0) at ceval.c:2324 #65 0x1fe14 in eval_code2 (co=0x2e5088, globals=0x0, locals=0x4a0cc, args=0x4ff8a0, argcount=0, kws=0xbb868, kwcount=0, defs=0x0, defcount=0, owner=0x0) at ceval.c:1654 #66 0x218fc in call_function (func=0x2e4e80, arg=0x600290, kw=0x0) at ceval.c:2484 #67 0x213a8 in PyEval_CallObjectWithKeywords (func=0x2e4e80, arg=0x600290, kw=0x0) at ceval.c:2322 #68 0xfeeba8b0 in callMethodWithPossibleHook (inst=0xfe050, meth=0x2e4e80, args=0x600290, kw=0x0) at ./../Components/ExtensionClass/ExtensionClass.c:755 #69 0xfeebabc4 in PMethod_call (self=0x5a2238, args=0x600290, kw=0x0) at ./../Components/ExtensionClass/ExtensionClass.c:825 #70 0x2136c in PyEval_CallObjectWithKeywords (func=0x5a2238, arg=0x600290, kw=0x0) at ceval.c:2320 #71 0xfeebfe5c in subclass_call (self=0xfe050, args=0x500898, kw=0x0) at ./../Components/ExtensionClass/ExtensionClass.c:2330 #72 0x2136c in PyEval_CallObjectWithKeywords (func=0xfe050, arg=0x500898, kw=0x0) at ceval.c:2320 #73 0xfeeba8b0 in callMethodWithPossibleHook (inst=0x5bafc0, meth=0xfe050, args=0x500898, kw=0x0) at ./../Components/ExtensionClass/ExtensionClass.c:755 #74 0xfeeba9c4 in call_PMethod (self=0x5a2558, inst=0x5bafc0, args=0x6adf10, kw=0x0) at ./../Components/ExtensionClass/ExtensionClass.c:782 #75 0xfeeba9fc in PMethod_call (self=0x5a2558, args=0x6adf10, kw=0x0) at ./../Components/ExtensionClass/ExtensionClass.c:792 #76 0x2136c in PyEval_CallObjectWithKeywords (func=0x5a2558, arg=0x6adf10, kw=0x0) at ceval.c:2320 #77 0x4c168 in builtin_apply (self=0x0, args=0x6ade50) at bltinmodule.c:126 #78 0x214f0 in call_builtin (func=0xbb868, arg=0x6ade50, kw=0x0) at ceval.c:2359 #79 0x213bc in PyEval_CallObjectWithKeywords (func=0xbb868, arg=0x6ade50, kw=0x0) at ceval.c:2324 #80 0x1fe14 in eval_code2 (co=0x125eb8, globals=0x0, locals=0x4a0cc, args=0x6ade50, argcount=0, kws=0xbb868, kwcount=0, defs=0x0, defcount=0, owner=0x0) at ceval.c:1654 #81 0x1fcb8 in eval_code2 (co=0x16f550, globals=0x72d1b0, locals=0x6ade50, args=0x3, argcount=0, kws=0x1b0640, kwcount=1, defs=0x190f7c, defcount=8, owner=0x0) at ceval.c:1612 #82 0x1fcb8 in eval_code2 (co=0x1228d8, globals=0x5f3108, locals=0x3, args=0xa, argcount=0, kws=0x1b0668, kwcount=1, defs=0x1b05ac, defcount=5, owner=0x0) at ceval.c:1612 #83 0x1fcb8 in eval_code2 (co=0x122f08, globals=0x6e6b04, locals=0xa, args=0x5, argcount=0, kws=0x1b05c8, kwcount=2, defs=0x193a74, defcount=7, owner=0x0) at ceval.c:1612 #84 0x1fcb8 in eval_code2 (co=0x123158, globals=0x32260c, locals=0x5, args=0x5, argcount=0, kws=0x1ad7f8, kwcount=0, defs=0x0, defcount=0, owner=0x146298) at ceval.c:1612 #85 0x218fc in call_function (func=0x1ad780, arg=0x4d6058, kw=0x0) at ceval.c:2484 #86 0x213a8 in PyEval_CallObjectWithKeywords (func=0x5a1ef8, arg=0x5baee8, kw=0x0) at ceval.c:2322 #87 0x397e4 in PyInstance_New (class=0x5a1ef8, arg=0x5baee8, kw=0x0) at classobject.c:473 #88 0x21518 in call_builtin (func=0x146298, arg=0x5baee8, kw=0x0) at ceval.c:2362 #89 0x213bc in PyEval_CallObjectWithKeywords (func=0x146298, arg=0x5baee8, kw=0x0) at ceval.c:2324 #90 0x51360 in t_bootstrap (boot_raw=0x5baf00) at ./threadmodule.c:224 Does this means that the problem is in the threadmodule? Thanks /B Bruno Mattarollo <brunomadv(a)ciudad.com.ar> --- Python Powered <http://www.python.org/psa/> ----- Original Message ----- From: "Anthony Baxter" <anthony(a)interlink.com.au> To: "Bruno Mattarollo" <brunomadv(a)ciudad.com.ar> Sent: Tuesday, November 23, 1999 8:53 AM Subject: Re: [Zope] DCOracle and Python dumps core with Oracle8i [Q] > >>> "Bruno Mattarollo" wrote > > I have lurned to run gdb to get simple answers I can understand, or at > > least I believe I have :-) > > I runned: "file core" and got "core: ELF 32-bit MSB core file > > SPARC Version 1, from 'python'" > > Then I runned: > > > > "gdb python core" and I got: > > "Core was generated by `/usr/local/bin/python > > /export/home/bmatt/iPersonal/z2.py -D'. > > Program terminated with signal 9, Killed." > > signal 9? that's a kill -9. What's going on here??? > > > [snip] after reading all the symbols... [end snip] > > "#0 0xfef45c8c in realfree ()" > > try a 'where' at the gdb prompt. On my linux box, I can't find a > call to 'realfree' anywhere in Python, the Oracle libs, libc, or in > DCOracle... > > thanks, > Anthony

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Re: [Zope] Joins can be tricky (was "how to join two table?")
by Anthony Baxter 23 Nov '99

23 Nov '99

>>> "Shalabh Chaturvedi" wrote > | When you join two tables which have column names in common and do select > | both columns from each table than Zope raises an error: > | > | Error, exceptions.ValueError: Duplicate column name, ID > | > | In this case "ID" was a common column name among the two tables. What > | happens is logical and expected, Zope cannot deal with two variables with > | the same name in the same namespace! > > This should probably be handled by zope as it is by SQL: the names of > the variables become: tablename.columnname (clients.id and columns.id in > the example below). No ? It's up to the DB interface - what does it return in the description of the column. I know it varies from RDBMS to RDBMS. You're safer to just specify it explicitly with 'as foo', anyway. (next time people are considering zope mailing list splits - probably an aqueduct list (or zope-rdbms) would be one to split off... no?) Anthony

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tree tag and SQLMethod
by Ava 23 Nov '99

23 Nov '99

Hello, I come back from a long travel in outer space... :-) I lost all my archives, and searching eegroup is a pain (still looking after 1 hour...) I remember one of you explaining how to get SQL Method result from a tree tag. At the time this clever guy did this, zope was not even 2.0.0alpha 1, so he couldn't add a howto page to www.zope.org Could someone explain how to do this. I've got something like this: sql_get_children(parent): SELECT key, parent, name FROM table WHERE <dtml-sqltest parent type=int> <dtml-comment>The top-level is parent=0</dtml-comment> view_hierarchy: <dtml-tree expr="sql_get_children(parent=0)" branches_expr="sql_get_children(parent=parent)"> <dtml-var name> </dtml-tree> However, it does not work :-( It raise a NameError on 'parent', which I guess it could get from the sql method result any idea? Regards, Jephte CLAIN minf7(a)educ.univ-reunion.fr PS: please answer me directly since I'm not prepared yet to read 50+ message a day being on the list :-) If possible, send the message to minf7(a)educ.univ-reunion.fr instead of ava(a)dde974.equipement.gouv.fr since that #@$ Exchange don't known what a reply-to adresse is...

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properties UI suggestion
by Sachin Shah 23 Nov '99

23 Nov '99

(I am afraid I don't know what list to mail this to, so I would appreciate any redirection and "In the future..." comments) I have a suggestion for the next iteration of zope: in the properties view, zope has three columns: a check box, the property ID and the property VALUE. How about a third... the property TYPE. ... it would be very useful as I can't tell you how many hours I have wasted debugging code only to realize I had accidently set a property to STRING instead of INT.... Thanks! Sachin

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Implementation questions for a new project
by VanL 23 Nov '99

23 Nov '99

I have been playing around with Zope for a couple weeks now, and I figure that it is time to actually sit down and do some work. I have a few questions, but I am generally familiar with dtml (and I'm starting to learn python, too). So: For background: The project is CLASSic -- Classroom Integrated Computing **Note: This is NOT a general announcement of availability. While anyone is free to email me (van_lindberg(a)mail.com) if they would like to help, I intend to have some sort of working project to release. This is provided for background, more than anything else. I am building a set of tools for teachers that they can use to adminster their classes. I currently work as tech support in a university, and I see a lot of professors that would like to use the web to enhance their classes, but they are intimidated by the technical language. After having worked with a lot of different teachers with different skill sets, I think I understand their needs and the mental framework in which they operate. Once I have a useable product, I want to release it as free software. Initially, this product will only provide basic functionality: email, online gradebook, syllabus/schedule/calendar integration, discussion forums (think squishdot) etc. see http://www.blackboard.com/ for an example of the type. Later, I hope to integrate some more advanced functions, such as school administration, lesson planners, etc. While it is slightly different than what I am thinking, take a look at http://depts.washington.edu/catalyst/home.html for the basic idea, especially the method guides. Now, the questions: If I just haven't read the appropriate item, just a pointer would do. The root of these questions lies in my understanding of OO programming. For instance, I want a object ClassItem that has associated values that I can call. I'll try to explain with Java, since that is what I know best. If I had: class ClassItem{ String dueDate; String description; int ID; ClassItem(String date, String about, int objectNumber){ dueDate = date; ID = objectNumber; } } Then if I declared a new ClassItem Homework1("Dec 11","1), I could from the calendar say something like System.out.println(" Homework #" + ID + " is due " + Homework1.dueDate()); but from the syllabus I could say System.out.println(" The first homework involves " + Homework1.description()); A class would be built from a collection of ClassItems. Now the questions> First, how can I create that same sort of construct? Second, How do I fill it up with user-defined values? For example, in php, if I have it parse a form with the following html: <INPUT TYPE=TEXT NAME="name" VALUE="Joe Schmoe"> it gives me a variable $name that has the value "Joe Schmoe" that I could then call elsewhere. Can I do this with dtml? Or would it be better to go with pure python? Thnx, VanL

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Re: [Zope] how to join two table?
by Thomas B. Passin 23 Nov '99

23 Nov '99

You do this with the SELECT statement in the database query, not with Zope or ZSQL per se. ZSQL just sends the SELECT statement to the database. Tom Passin >From: Rod Za <rodza(a)bhnet.com.br> >How i can join two table with ZSQL? > >thank you. > >Rod Za

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DCOracle and Python dumps core with Oracle8i [Q]
by Bruno Mattarollo 23 Nov '99

23 Nov '99

Hello. I have lurned to run gdb to get simple answers I can understand, or at least I believe I have :-) I runned: "file core" and got "core: ELF 32-bit MSB core file SPARC Version 1, from 'python'" Then I runned: "gdb python core" and I got: "Core was generated by `/usr/local/bin/python /export/home/bmatt/iPersonal/z2.py -D'. Program terminated with signal 9, Killed." [snip] after reading all the symbols... [end snip] "#0 0xfef45c8c in realfree ()" ... Anyone has a clue what's thios? Thanks. /B Bruno Mattarollo <brunomadv(a)ciudad.com.ar> --- Python Powered <http://www.python.org/psa/>

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New beta of GenericUserFolder available for testing
by Stuart 'Zen' Bishop 23 Nov '99

23 Nov '99

I've uploaded a new beta of GUF , which I've fixed the outstanding authentication issues. This has (hopefully temporary) introduced a new limitation where things will stuff up if you create a GUF (using cookie authentication) inside an area already protected with cookie authentcation. I'm fairly certain this problem is also in most other acl_users implementations that use cookie authentication methods. -- ___ // Zen (alias Stuart Bishop) Work: zen(a)cs.rmit.edu.au // E N Senior Systems Alchemist Play: zen(a)shangri-la.dropbear.id.au //__ Computer Science, RMIT WWW: http://www.cs.rmit.edu.au/~zen

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Problem editing index_html in Zclass
by Harry Henry Gebel 23 Nov '99

23 Nov '99

I have an index_html DTML Method in a ZClass called ProfileClass, I am unable to open this method for editing in Xemacs. Here is the problem, I tried to open it with: /127.0.0.1:/Control_Panel/Products/Profile/ProfileClass/index_html but got a message that the file did not exist. I then opened /127.0.0.1:/ and changed "directories" until I got to /127.0.0.1:/Control_Panel/Products/Profile but when I looked at this listing ProfileClass was not marked as a "directory" so there was no way for me to cd to it. I tried moving the index_html method to Profile thinking that perhaps ProfileClass would acquire it from Profile, but it didn't work. Is there any way for me to edit this directly in Xemacs with EFS or will I have to open it in the Zope management interface and use cut and paste to enter it? I am using Zope 2.1.0b2 on Linux Mandrake 6.1 w/ the included python (1.5.2) . ---------------------------------------------------------------------- Harry Henry Gebel ICQ# 43675297 West Dover Hundred, Delaware ----------------------------------------------------------------------

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(more on) programatically adding ZClass instances ...
by Darran Edmundson 23 Nov '99

23 Nov '99

I am slowly coming to grips with using external methods to reach into the ZODB. Right now, I am trying to create an instance of a folderish ZClass and then populate it with (pre-existing) images from elsewhere in the ZODB. (The following URL has been very helpful http://www.zope.org/Members/tazzzzz/addZClasses.) Excerpts of my external method: # create an instance of MyClass container=parent.Control_Panel.Products.MyProduct.MyClass(container_id) # make container a child object of parent parent._setObject(container_id, container) # set various attributes of container container.id = container_id container.foo = foobar # assume image points to a proper ZClass Image container.manage_addImage(image.id, image.data, '') A few questions: *) The final manage_addImage call occassionally fails with a seek error on image.data.  File /usr/local2/Zope/lib/python/OFS/Image.py, line 265, in _read_data (Object: default_image) AttributeError: (see above) I have verified that image is a valid Image and that: repr(image) = <Image instance at 8551e90> len(image.data) = 13611 type(image.data) = <extension class Acquisition.ImplicitAcquirerWrapper at 40160680> repr(image.content_type) = 'image/jpeg' Can someone offer advice as to why my read of image.data fails? *) What happens to container if I *don't* execute parent._setObject(container_id, container)? Doing this, I notice that the size of Data.fs does not increase (before running external method compard to after). Does this mean that Zope has somehow recognized that container doesn't have a parent and deleted it? I'm worried that I could corrupt my database during development of external methods that create/delete/manipulate the ZODB. Cheers, Darran. -- Darran Edmundson [Darran.Edmundson(a)anu.edu.au]

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