- Zope-Dev - Zope lists

updateObjectList for objectManagers?
by Lennart Regebro 30 Apr '02

30 Apr '02

I have had a couple of problems with an object managers self._objects getting out of sync with "reality", so that it keeps the wrong names or the wrong meta_types in the _objects list. Is there an "update" function that you could call to make it scrap this list and rebuild it? It would be nice I think...

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LDAPUserFolder
by Dirk Datzert 30 Apr '02

30 Apr '02

Hi, how do I replace a acl_users folder in the Root by an working LDAPUserFolder ? Regards, Dirk

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localRoles
by Dirk Datzert 29 Apr '02

29 Apr '02

Hi, if I define local roles for a folder object. Are the local roles acquired by Objects in the folder and sub-folders and so on ? Regards, Dirk

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ZSQLCatalog
by Jean-Paul Smets 29 Apr '02

29 Apr '02

Philippe Beaumont (mostly) and I just finished a product called ZSQLCatalog. It allows to query the Zope Catalog with SQL methods and find objects in the ZODB with complex queries in SQL. http://www.zope.org/Members/nexedi/ZSQLCatalog It is still a proof of concept but should improve a lot and very quickly. Suggestions are welcome. JPS. -- Jean-Paul Smets-Solanes <jp(a)nexedi.com> - Nexedi (CEO) GPG Fingerprint: 40FF FA78 75AA 680D 8BB4 EEF9 539A 79CC CB8E 5F01

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RE: [Zope-dev] RE: [ZC] 365/ 2 Reject "metadata in Catalog is spa ce inefficient"
by Jay, Dylan 28 Apr '02

28 Apr '02

> -----Original Message----- > From: Chris Withers [mailto:chrisw@nipltd.com] > Sent: Friday, 26 April 2002 11:18 PM > To: tdickenson(a)geminidataloggers.com > Cc: Jay, Dylan; zope-dev(a)zope.org > Subject: Re: [Zope-dev] RE: [ZC] 365/ 2 Reject "metadata in Catalog is > space inefficient" > > > Toby Dickenson wrote: > > > > Note that this scheme may not necessarily give runtime performance > > benefits. Loading the reverse index data may not be any faster than > > loading metadata. > > I'm betting in a lot of cases it'll be a damn site slower. > > MetaData is specifically designed to be real quick to load. > For the small extra space > usage (how much _does_ disk space, or RAM for that matter, > cost nowadays?! ;-), I'm more > than happy to take the speed win... Fair enough, I hadn't considered the time trade-off due to the reverse index being loaded. However, let me couch my suggestion in a different way. We've identified that the metadata can be located in possibly 3 different places. Use of each has different speed/space trade-offs. Using each also has a different API eg (from memory so won't be entirely correct) getObjectForRID[object_id_].field getIndexDataForRID[object_id_].field field All these methods might result in the correct data being displayed for a given search (each with a different tradeoff). Perhaps there should be a way of making this tradeoff transparently. That way the report designer can be ignorant of any optimizations eg <dtml-in Catalog> <dtml-var title> </dtml-in> would work no matter whether the title was set as metadata field or not. If it wasn't then the catalog might access the object and look it up (with the resulting time penelty). Then, in the same way as in the RDBMS world, the indexs (the Catalog) could be adjusted to make this operation more efficient without changing any code (just add metadata to the Catalog). The same tradeoff could be used if an admin decided that the object was too big and overhead of repeating the field in metadata was too big, then they could decide to obtain the data from the FieldIndex data instead.

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python question
by Dirk Datzert 28 Apr '02

28 Apr '02

Hi, does anybody know a good programm or the command to create documentation of python classes (api-documentation like javadoc) out of the python code ? Thanks, Dirk

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What happend to sessionapi-prog.stx?
by Johan Carlsson [Torped] 27 Apr '02

27 Apr '02

What happend to sessionapi-prog.stx? I found it in the http://cvs.zope.org/Products/Sessions/help/Attic/ Is there a replacement? Regards, Johan -- Torped Strategi och Kommunikation AB Johan Carlsson johanc(a)torped.se Mail: Birkagatan 9 SE-113 36 Stockholm Sweden Visit: Västmannagatan 67, Stockholm, Sweden Phone +46-(0)8-32 31 23 Fax +46-(0)8-32 31 83 Mobil +46-(0)70-558 25 24 http://www.torped.se http://easypublisher.torped.se

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medusa with 'Broken Link' problem
by Dirk Datzert 27 Apr '02

27 Apr '02

Hi, I'm looking for a solution for the following - I think well known - problem of medusa 'Broken Link' : Plattform Linux 2.2.19 or Linux 2.4.16 Zope 2.3.3 is necessary ( no update is possible ) Python 1.5.2 or if possible a higher version Zope hangs after a random while of random clicks with error in log: Unhandled exception in thread: Traceback (innermost last): File "/usr/src/packages/BUILD/Zope-2.3.3-src/ZServer/PubCore/ZServerPublisher. py", line 97, in __init__ response._finish() File "/usr/src/packages/BUILD/Zope-2.3.3-src/ZServer/HTTPResponse.py", line 28 2, in _finish stdout.close() File "/usr/src/packages/BUILD/Zope-2.3.3-src/ZServer/HTTPResponse.py", line 33 9, in close Wakeup() File "/usr/src/packages/BUILD/Zope-2.3.3-src/ZServer/medusa/select_trigger.py" , line 74, in pull_trigger os.write (self.trigger, 'x') OSError: [Errno 32] Broken pipe I retrieved the latest CVS-code of asyncore.py asynchat.py . Please I need a solution Thanks, Dirk

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Running methods on Zope startup.
by grahamd＠dscpl.com.au 27 Apr '02

27 Apr '02

Is there a Zope product out there which implements a "Startup" like folder for Zope? That is, I want to be able to have a folder like object called "Startup" in the root directory, and when Zope is first started I want Zope to automatically make a call against the "Startup" object which could then in turn run methods of any user defined objects which have been added into the "Startup" folder to perform special processing only when Zope is started. Imagine a situation similar to database connections. With database connections when you create it you can indicate that you want the connection established. Now when Zope is restarted, those database connections will be automatically restarted when Zope restarts. Although, I am not sure whether this is when Zope actually starts or when the next request using that database happens. Anyway, I ultimately want to be able to have a Zope product which has a persistent interprocess messaging connection to another process. Although when first added into Zope the connection can be initiated, I know of no way to have Zope restart that connection when it restarts. I can't rely on the connection only starting when someone tries to access the resource, I want it to happen straight away upon Zope restart. When I thought about it, I figured the most basic thing to do would be to have a Zope "Startup" folder as described in a known place. I could then stick in that folder, methods to be triggered at startup which could startup the interprocess communications link for me. This seemed better than having a startup mechanism specific to what I was doing as it could be used for other things as well. Can anyone point me to such a Zope product. I have started looking at how to do it myself and have some of the bits in place. The first issue is that when the "initialize()" method in the product "__init__.py" file is called not all Zope startup has occured, so it is too early to trigger things from that point. Best I could come up with there was to register a callback to asyncore to be called when asyncore mainloop is actually run, which is after all Zope startup has been done. The next problem is getting an appropriate context to be able to start making calls into Zope objects. The "initialize()" method gets a product context, but doesn't have public access to the application context. Is there some way of accessing the Zope application context and thus root folder where you don't otherwise have a handle to it? Can Main.bobo_application be used? Even if the application context is obtained, is it safe to be making calls into Zope objects from a callback from asyncore? Is there a better way? I am very new to Zope and this is my first adventure into making a Zope product and thus could be totally off track. If anyone understands what I am trying to do and can suggest how to do it or point at something that does what I want, then even better. Personally I would be surprised if this hadn't already been done or even that there is some inbuilt way of doing it now, as it opens up all sorts of interesting possibilities. Appreciated if responses are cc'd to me as well as going to the list as I am not a member of the list yet and am using list archives. Thanks in advance. -- Graham Dumpleton (grahamd(a)dscpl.com.au)

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Re: Zope-Dev digest, Vol 1 #1662 - 3 msgs
by Sune Toft 26 Apr '02

26 Apr '02

Sorting menus within CMF! I don't if it is the right forum to ask. Anyway ..what is the correct way to sort menu items in the action-box when using CMF 1.2 ? Sune Toft HeadNet ApS Sundholmsvej 46 2300 København S sune(a)headnet.dk www.headnet.dk ----- Original Message ----- From: <zope-dev-request(a)zope.org> To: <zope-dev(a)zope.org> Sent: Wednesday, April 24, 2002 6:00 PM Subject: Zope-Dev digest, Vol 1 #1662 - 3 msgs > Send Zope-Dev mailing list submissions to > zope-dev(a)zope.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.zope.org/mailman/listinfo/zope-dev > or, via email, send a message with subject or body 'help' to > zope-dev-request(a)zope.org > > You can reach the person managing the list at > zope-dev-admin(a)zope.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Zope-Dev digest..." > > > Today's Topics: > > 1. Re: PHP vs Zope cost benefit (R. David Murray) > 2. Re: Ordered Folder (was: Speaking of 2.6...) (Florent Guillaume) > 3. Re: Ordered Folder (was: Speaking of 2.6...) (Lennart Regebro) > > --__--__-- > > Message: 1 > Date: Wed, 24 Apr 2002 10:30:30 -0400 (EDT) > From: "R. David Murray" <bitz(a)bitdance.com> > To: Joseph Cheek <joseph(a)cheek.com> > cc: Jason Spisak <jspisak(a)lycoris.com>, William Trenker <wtrenker(a)shaw.ca>, > <zope-dev(a)zope.org> > Subject: Re: [Zope-dev] PHP vs Zope cost benefit > > On Wed, 24 Apr 2002, Joseph Cheek wrote: > > nope. that's a function of the DB, not PHP. if the DB is written right > > it will roll back/commit transactions automatically. so this becomes an > > argument for zope over php+some really lame DB, not zope over php > > regardless. > > > > 8-) > > > > [agreed that the linuxjournal commit/rollback code is hairy, but the > > folks there seem to like mysql for some strange reason]. > > The DB provides the transaction commit/rollback *capability*, but > it is up to the application to *use* it. The DB can't commit or > rollback automatically, because it doesn't know where the transaction > boundaries are unless the application tells it. In PHP, that means > *you* have to write the trasaction-start/-end/-rollback calls. Zope, > on the other hand, wraps every web request in a transaction to the > DB *automatically*, and does the rollback *automatically* if an > error occurs in the web transaction. > > This is a very very cool feature of Zope, and saves a *lot* of > programming effort. > > --RDM > > > > > --__--__-- > > Message: 2 > To: zope-dev(a)zope.org > From: Florent Guillaume <fg(a)nuxeo.com> > Subject: Re: [Zope-dev] Ordered Folder (was: Speaking of 2.6...) > Date: Wed, 24 Apr 2002 14:54:43 +0000 (UTC) > Organization: Nuxeo > > Lennart Regebro <lennart(a)torped.se> wrote: > > > Also do we want all folders to be ordered by default ? > > > > I wouldn't want this. I don't know how ordered folder works nowadays, but I > > want it sorted on name by default. > > Standard Folders are *explicitly* sorted by name by default, so the fact > that the underlying objectValues() returns ordered objects is of no > consequence here. > > Florent > > -- > Florent Guillaume, Nuxeo (Paris, France) > +33 1 40 33 79 87 http://nuxeo.com mailto:fg@nuxeo.com > > > > --__--__-- > > Message: 3 > From: "Lennart Regebro" <lennart(a)torped.se> > To: "Florent Guillaume" <fg(a)nuxeo.com>, > <zope-dev(a)zope.org> > Subject: Re: [Zope-dev] Ordered Folder (was: Speaking of 2.6...) > Date: Wed, 24 Apr 2002 17:13:28 +0200 > Organization: Torped > > From: "Florent Guillaume" <fg(a)nuxeo.com> > > Standard Folders are *explicitly* sorted by name by default, so the fact > > that the underlying objectValues() returns ordered objects is of no > > consequence here. > > So the UI is sorted by default, but objectValues is ordered? Perfect! > > > > > > > --__--__-- > > _______________________________________________ > Zope-Dev maillist - Zope-Dev(a)zope.org > http://lists.zope.org/mailman/listinfo/zope-dev > > (To receive general Zope announcements, see: > http://lists.zope.org/mailman/listinfo/zope-announce > > For non-developer, user-level issues, > zope(a)zope.org, http://lists.zope.org/mailman/listinfo/zope ) > > End of Zope-Dev Digest >

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