March 2001 - Zope-Dev

2.3.x Catalog Brains
by Casey Duncan 20 Mar '01

20 Mar '01

In doing some development using Catalogs in 2.3.x, I have run across some interoperability bugs between the various Catalog classes. 1. Catalog brains are slightly broken when applied agains plain Catalogs. Looking at __getitem__ in Catalog.py (line 225 and 231 in 2.3.1b2 in particular), the result record is made into a brain which is an aquisition wrapper of the parent of the Catalog object. When using a ZCatalog this is fine because the ZCatalog is the parent of the Catalog. However, when a Catalog is used alone the getPath, getURL, getObject, etc. methods of the brain do not work because they expect to find a getpath method which only exists in ZCatalog. Since this is merely a lookup into the Catalog's paths dictionary, I see no reason why this getpath method can't be in Catalog. A patch will be needed for Catalog.py and CatalogBrains.py to accomplish this, and I would be happy to provide one. However, I need to know why exactly the brains are wrappers of the Catalog's parent rather than the Catalog itself. Is this a security issue of some kind? Another fix for this would be to use slightly different brains for Catalogs vs. ZCatalogs. From what I see the mechanism for this is already in place. 2. This one is less of a bug than a feature request. I have created a CatalogPlus class that basically enhances the Catalog so that is plays well with CatalogAware. This entails just adding the catalog_object and uncatalog_object methods from ZCatalog to Catalog. It would seem to me to be quite easy to modify Catalog or CatalogAware to account for this automatically. Also why are subtransactions part of ZCatalog and not Catalog? My guess is that it is a ZODB specific feature so it doesn't belong in Catalog, is that right? -- | Casey Duncan | Kaivo, Inc. | cduncan(a)kaivo.com `------------------>

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Re: [Zope-dev] Comment on CVS change of default textindex search operator
by Dieter Maurer 20 Mar '01

20 Mar '01

R. David Murray writes: > >To: zope-checkins(a)zope.org > >Date: Mon, 19 Mar 2001 19:47:31 -0500 (EST) > >From: chrism(a)digicool.com (Chris McDonough) > >Subject: [Zope-Checkins] CVS: Zope2 - UnTextIndex.py:1.33.2.9 > > > >Update of /cvs-repository/Zope2/lib/python/SearchIndex > >In directory korak:/home/chrism/sandboxes/2_3Branch/lib/python/SearchIndex > > > >Modified Files: > > Tag: zope-2_3-branch > > UnTextIndex.py > >Log Message: > >Changed default query operator to 'AND' instead of 'OR' (way improved search results). > > > This strikes me as a Very Bad Thing. I second that! Changing the default is a drastic interface change. It should not be done light-heartedly. > .... > Finally, > it is my experience that most search engines use OR as the default operator. Yes, and it is the more natural interpretation when someone enters a set of (unrelated) words... Dieter

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NewLoggingAPI
by Shane Hathaway 20 Mar '01

20 Mar '01

I have written a proposal for the improvement of logging. It builds on ideas proposed by Chris and Andreas at Digital Creations. It is designed to augment Zope's enterprise-level capabilities. Please comment! http://dev.zope.org/Wikis/DevSite/Proposals/NewLoggingAPI Shane

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Adding a property to a batch of objects ?
by Holger Lehmann 20 Mar '01

20 Mar '01

Hi, I wanted to do sonething like this: <dtml-in "objectIds(['DTML Document'])> <dtml-call ....manage_addProperty('foo','bar','string')> </dtml-in But I am missing the .... part :-( I can happily add the property to myself or the folder above (if a DTML Method is used) but I just cant seem to be able to add the property to an object I want. Any suggestions ? I would be sooo hapyy, since I have to add three props to about 1200 DTML Documents :-( - Holger ----------------------------------- catWorkX GmbH Hamburg Dipl.-Ing. Holger Lehmann Stresemannstr. 364 22761 Hamburg Tel : +49 40 890 646-0 Info: 0700 catWorkX ( 0700 22 89 67 59 ) Fax : +49 40 890 646-66 mailto:lehmann@catworkx.de http://www.catworkx.de http://www.catbridge.de

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FTP interface being worked on?
by Fred Wilson Horch 20 Mar '01

20 Mar '01

Hi folks, Is anyone working on the FTP support in Zope? For our project, we'd like to improve the FTP interface to Zope. I noticed that ZServer/README.txt in Zope 2.3.1b1 states Properties and FTP: The next step The next phase of FTP support will allow you to edit properties of all Zope objects. Probably properties will be exposed via special files which will contain an XML representation of the object's properties. You could then download the file, edit the XML and upload it to change the object's properties. We do not currently have a target date for FTP property support. I have a proposal written up, if anyone is interested in providing feedback to me before I start work on it. Along these lines, I also have a proposal to add an export / import feature that would dump objects in the ZODB to separate files in a directory tree. (Currently the XML export seems to create one big XML file.) The goal is to allow objects to be managed as flat files so you can edit them more easily and use CVS to track revisions. Also, it sure is confusing to try to figure out where you accept patches. Is the Collector still the best place to send them? Thanks, Fred -- Fred Wilson Horch mailto:fhorch@ecoaccess.org Executive Director, EcoAccess http://ecoaccess.org/ P.O. Box 2823, Durham, NC 27715-2823 phone: 919.419-8354

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getPhysicalPath?
by Andy McKay 20 Mar '01

20 Mar '01

getPhysicalPath returns the physical path to an object ignoring how I got there through Acquistion. There are a bunch of variables in the REQUEST that tell me how I got to an object, but we have an object that is messing around with traversal, so the REQUEST variables arent ideal. Is there a simple method like getAcquistionPath() that tells me how I was required without having to do some sub optimal REQUEST variable hacking / string matching? Thanks. -- Andy McKay.

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ZPatterns: getItem returns None
by Roch'e Compaan 20 Mar '01

20 Mar '01

I think I've read everything on the mailing lists on this issue, but have found no joy. I have a ZClass derived dataskin called AllotmentArea matching a table with the same name in my SQL RDBMS. I have a Specialist called AllotmentAreas with storage set to the AllotmentArea ZClass and load attribute set to "AllotmentArea_ID" and this property does not exist on the ZClass propertysheet. When I call getItem(<existing_id>) on the specialist, it returns None. SkinScript for retrieval: WITH QUERY sqlGetAllotmentArea(AllotmentArea_ID = self.id) COMPUTE AllotmentArea_ID, AreaName, AreaCode Note: The Proxy Role for the SkinScript is set to Manager. sqlGetAllotmentArea: Select * from AllotmentArea where AllotmentArea_ID = <dtml-sqlvar AllotmentArea_ID type=string> Roché

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Starting a new process
by Christian Ellguth 19 Mar '01

19 Mar '01

Hi, I have a lengthy operation in an external method. I takes up to 2 minutes. How do I prevent the browser from timing out? At the moment I am creating a new process by calling "os.fork()" and have that operation done in that new process. At the end I call "sys.exit(0)". This worked fine with Zope 2.2.4, but Zope 2.3 gives me an error message when calling sys.exit . But sys.exit is the only way to end the child-process. Can anybody tell me what's the best way to handle a lengthy operation in an external method? Thanks Christian ____________________________________________ Christian Ellguth Rebenring 64 App. 04-05-22 38106 Braunschweig Tel.: 05 31 - 3 88 40 78 Mobil: 01 77 - 2 39 20 52 e-mail: christian(a)ellguth.de ICQ#: 41965033

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call method of ancestor of ZClass
by Tim McLaughlin 19 Mar '01

19 Mar '01

Anyone know how I could call the manage_afterAdd method of ZObjectManager from a python method which is overriding the method in a ZClass. Maybe something like this (but this doesn't work. manage_afterAdd(item, container): context.ZObjectManager.manage_afterAdd(item,container) do_something_else() TIA, Tim McLaughlin

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PATH_INFO reliable?
by Danny William Adair 19 Mar '01

19 Mar '01

I want to strip off the SERVER_URL of an absolute url (which I have as a string) without doing string manipulations. Is there some built-in function to do this? So what I'm looking for is actual the reverse of absolute_url. The request variable PATH_INFO looks very good, but I don't know whether this is _always_ created. Thx in advance, Danny P.S.: Maybe I just got something completely wrong here. Help!

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