- Zope-Dev - Zope lists

nisUserFolder
by Will Fife 03 Sep '99

03 Sep '99

I would like to announce the imediate availability of the nisUserFolder product. This nisUserFolder product is heavily based off of the etcUserFolder product, with probably only 30 or 40 lines of code that are different between the two products. Anyways, it is available at http://www.zope.org:18200/Members/zazen/nisUserFolder Happy zopeing everyone. ps. If someone would be kind enough to post this to the zope(a)zope.org list, It would be appreciated. --------========================================================-------- Phone: (949) 581-1700 Will Fife http://www.techfuel.com Pager: (949) 451-9443 System Engineer will(a)techfuel.com --------========================================================--------

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Calling a DTML method from python?
by David Kankiewicz 03 Sep '99

03 Sep '99

Hi Zope/Python gurus, What's the fastest/quickest way to get into zope and run a DTML method? I am attempting my first product and need to call a method inside my ZClass product / which may or may not call python products... What modules do I need to import and can someone go over simple example? DTMLmethod Sweeps through ZCatalog files and creates a ZClass instance with the current(soon to be old) variables in them.. (I might change these to python but not right now) etc... pythonproduct.py import "what? to access DTML methods" ZPublisher? client? etc.? def storeState(): some_imported_module's_invoking_method(DTMLmethod, args) ?? BTW: zope.org beta site has a bad how-to link to the "adding ZClass instances programmatically". It goes to the homepage. (looks like tazzzzz might have removed it?) TIA, David

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Re: [Zope-dev] How to invoke a Z SQL method from python
by Martijn Pieters 03 Sep '99

03 Sep '99

At 18:37 3-9-99 , Jim Penny wrote: >Sorry to bother you again, but how do I get at the results? >I.e., I can see that a=self.sql_test(request_number=44) is >triggering a SQL query. But now I can't figure out the >number of rows selected, the size, or the contents of the rows. > >Thanks in advance, and I promise I won't bother you again for a month! Just keep bothering the list =) It is weekend for me now.. =) Returned is a list of row objects, and each row object is just a dumb class with the different columns converted to class attributes. So you test for the length of the result, loop through it like any list and access attributes on the list objects, including list.__dict__.keys() for a list of attributes. -- Martijn Pieters, Web Developer | Antraciet http://www.antraciet.nl | T: +31 35 7502100 F: +31 35 7502111 | mj(a)antraciet.nl http://www.antraciet.nl/~mj | PGP: http://wwwkeys.nl.pgp.net:11371/pks/lookup?op=get&search=0xA8A32149 ---------------------------------------------

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How to invoke a Z SQL method from python
by Jim Penny 03 Sep '99

03 Sep '99

Hi, I have to model some legacy forms. They are tricky enough and the user's picky enough that I am not going to be able to use HTML as the source language. So I want to drop to TeX. I have tucked the data for the form away in an external database. How do I execute a query against a ZSQL method from python. In particular, I have a ZSQL method sql_test, that has a single argument request_number. Mucking about in python, I can see by program def test(self, request_number): return request_number, dir(self.sql_test): that sql_test has structure: ['__ac_local_roles__', '_arg', '_col', '_v_brain', '_v_cache', 'arguments_src', 'connection_id', 'id', 'src', 'template', 'title'] But, I don't see anything in sight that actually causes the query to be invoked. Could someone give an example, or point me to the general area of the source code in which a ZSQL method is invoked? Thanks. Jim Penny

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thread safety in external methods
by Robin Becker 03 Sep '99

03 Sep '99

How do I do thread safety inside an External method. I want to access a global singleton as def __ZGA(): if not hasattr(sys.modules['__main__'],'__ZGA'): #unsafe here... Z=ZGA_calculator() # initialise things to do with Z sys.modules['__main__'].__dict__['__ZGA']=Z return sys.modules['__main__'].__dict__['__ZGA'] the problem is controlling access to sys.modules['__main__'].__dict__['__ZGA']. I can't have a global lock inside my external method as I get a different environment with each call (which is why I need the singleton in the first place). It would be sufficient for my purposes if I could guarantee to get certain code run just once at startup time. Do I have to make a product or is there some easier way to do this. -- Robin Becker

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ts_regex.py broken in Z2.0 final? was [Zope] Announce: Confera 1.3.1
by Andreas Kostyrka 03 Sep '99

03 Sep '99

On Thu, 2 Sep 1999, Nick Garcia wrote: > Looks good here! I guess this means I don't have to look into it after > all ;) Well, it doesn't look to well here. Actually, the fix I've did, I understand, I've switched from the old regsub to the threadsafe regex module. Now this, I don't understand, it seems like the ts_regex.py is broken for gsub. The offending line in Confera.py is: body =split(ts_regex.gsub(crlf,'\n',body),'\n') Which seems to make quite sense to me. Traceback (innermost last): File /home/zopebot/redhat/BUILD/Zope-2.0.0-src/lib/python/ZPublisher/Publish.py, line 214, in publish_module File /home/zopebot/redhat/BUILD/Zope-2.0.0-src/lib/python/ZPublisher/Publish.py, line 179, in publish File /home/zopebot/redhat/BUILD/Zope-2.0.0-src/lib/python/Zope/__init__.py, line 201, in zpublisher_exception_hook File /home/zopebot/redhat/BUILD/Zope-2.0.0-src/lib/python/ZPublisher/Publish.py, line 165, in publish File /home/zopebot/redhat/BUILD/Zope-2.0.0-src/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: addMessage) File /home/zopebot/redhat/BUILD/Zope-2.0.0-src/lib/python/ZPublisher/Publish.py, line 102, in call_object (Object: addMessage) File /home/zopebot/zope/Products/Confera/Confera.py, line 568, in addMessage File /home/zopebot/redhat/BUILD/Zope-2.0.0-src/lib/python/ts_regex.py, line 109, in __call__ File /var/tmp/mze-python-root/opt/mtg/lib/python1.5/regsub.py, line 38, in gsub AttributeError: (see above) Andreas -- Andreas Kostyrka | andreas(a)mtg.co.at phone: +43/1/7070750 | phone: +43/676/4091256 MTG Handelsges.m.b.H. | fax: +43/1/7065299 Raiffeisenstr. 16/9 | 2320 Zwoelfaxing AUSTRIA

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RE: [Zope-dev] Owner Role and ZCatalog
by Brian Lloyd 03 Sep '99

03 Sep '99

> Thanks Brian! > > This is terrific. I tried yesterday to test to see if the owner role > was working in Zope 2, and I wasn't having any luck. I tried the: >  >  > foo >  >  > > And no matter who had created the object I got back foo for the Users > with the manager role, and nothing for everyone else. > > Jason Yes - note that "local roles" are just that - local to a particular object. The has_role method of the User objects can take an optional second argument, which is the object to be used as context for determining if the User has the given role. If the second argument is passed, has_role will take local roles into account - otherwise it will only look through the roles actually assigned to the User itself. If you try:   foo   ...then you should get the right answer. This is something that needs to go into the API documentation for 2.0. Along these same lines, if you ever use the getRoles method of User objects, note that this will only give you the roles actually assigned to the User. To get the list of the roles of a user taking into account the local roles of an object, you can call: AUTHENTICATED_USER.getRolesInContext(object) Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

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zope developers?
by Damien Morton 02 Sep '99

02 Sep '99

Hypothetically speaking, if I posted to this list looking for a handfull of python coders, and more specifically, zope coders, to work on a large portal site in Manhatten, how many people might be interested (assuming competetive pay rates).

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RE: [Zope-dev] Owner Role and ZCatalog
by Brian Lloyd 02 Sep '99

02 Sep '99

> Zopists, > > Does anyone know if the ZCatalog catalog's the Owner role of > an object. > This sounds strange, but I'd like someone to only search their own > stuff. Is that possible? Is Owner a searchable indexable > item? Michel? > > Jason Spisak Jason, This is possible - currently you have to do a little bit of work to make it happen though. Ownership is basically a convention - when an object is created, the user who created the object is given the "Owner" local role on the object automatically. While there is currently no built-in API call to get the "owner" of an object (ownership is still kind of new, so we are letting it percolate before providing a formalized ownership api), here is an example external method that will give you the names of the users who have the "Owner" role on a given object. Note that there can be more than one, since site managers can go into an object and give multiple users the "Owner" local role on an object just as they could with any other local role. def owner(self): """Return a space-separated string of user names who have the local Owner role on an object.""" parent=self.aq_parent roles=parent.aq_acquire('__ac_local_roles__') dict=roles or {} items=[] for key, val in dict.items(): if 'Owner' in val: items.append(key) return string.join(items, ' ') You can either use this as an external method at the top of your site that objects can acquire, or add it to your ZClass definitions if you are indexing ZClass instances. That should effectively give your objects an "owner" method that the Catalog can use. Next, you need to create an "owner" index in your Catalog (you probably want to make this a Text Index instead of a field index so that you can search for a single name and find it though there may be multiple owners). Hope this helps! Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

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RE: [Zope-dev] XMLDocument appears to leak memory
by Amos Latteier 02 Sep '99

02 Sep '99

> David Kankiewicz wrote: > > Martijn Faassen wrote: > > I think I've seen an earlier report and I'd like to confirm > this. XML > > Document appears to leak memory pretty badly: > > > > * When rendering it with DTML to HTML, Zope's memory use > often goes up a > > few kilobytes. Not all the time, it appears, but a reload > often does the > > trick. > > > > * It also appears that doing a DOM manipulation (for instance > > appendChild) increases Zope's memory use significantly; by > a few 10s of > > k. > > > I've been working with the Zope Quick reference in XML and have found > Zope's internal XML Documents are on about 10 times the size > compared to > stand alone file. (my guess, seems to be the DOM > information?). With the > manipulation, it might be the storage required to undo (not sure?). Well, I suppose that it is possible there are memory leaks in XML Document, however I'd like to see stronger evidence before I jump to that conclusion. XML Document uses a lot of resources. DOM creates a lot of objects, and the estimate that a Zope DOM representation of an xml file is 10 times as large as the file is probably a reasonable estimate. Displaying an XML Documents wakes up quite a few objects. Editing XML Documents can create quite a few new objects since it is difficult for XML Document to know when to change existing Nodes and when to create entirely new Nodes. It is on my todo list to improve memory use in XML Document. For example steps can be taken to move temporarily needed objects out of memory. If anyone has more specific problems or reproducible cases of memory getting out of control, I'd love to hear them. Please remember, however, that XML Document is unsupported; I just work on in my spare time. Thanks! -Amos P.S. Another version of XML Document is coming out today. It is a *lot* better than the first alpha release.

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