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Data.fs - can't pack: Oversized int - HELP!!!
by sbabu＠tnc.org 16 Nov '00

16 Nov '00

Hello, We've a production environment running Zope 2.1.6 on WinNT4 sp5 (not front ended with IIS). Data.fs is 60MB and growing at the rate of 10MB per day - we are building a site and quite a lot of people are adding content simultaneously. We pack the database daily. Yestderday afternoon packing failed saying "Transaction #xxxx has invalid headers". Then when I went through UNDO tab list, from a particular earlier transaction onwards, I couldn't see the UNDO list also - says "Oversized int". Well, since I was not sure of how well ZODB will hold up I had programmed it in such a way that we keep a copy of most important textual content in an Oracle database as well. So, I used the Data.fs.old, recreated all the DTML documents and folders using a DTML script after reading data from Oracle. However, images and other binary files are stored only in ZODB, so I had to upload these again. Again today afternoon the same problem appeared. I've nailed it down to one particular folder which zope interface shows, but can't access. I can repeat my whole excercise tomorrow morning too, but I really would like a better solution because it becomes kind of unstable. Q: I saw Jim's mail on fsrecover.py. Does this work on Zope 2.1.6 databases too? I'll try tomorrow, with a backup copy. But personal experience would be nice :-) Q: The number of transactions (write/update) are quite high on my site - atleast now, during the building phase. What would be a recommended pack frequency? Note: 95% of our updates are through anonymous user. This is because I'm (need to, asked to) using zope as purely an app server, not as a web platform. So, all my data goes into an Oracle database, then gets created on ZODB as a DTML document etc. It is really a round about way of doing things - like trying to write some ASP/PHP code to make things look 10% like Zope's content management abilities. Q: Is there any particular reason why I really should upgrade to Zope 2.2? If someone in DC needs to take a look at the Data.fs file for research, I can arrange that. Many thanks in advance V.Satheesh Babu Web Technologies Group, (703)-841-5348 sbabu(a)tnc.org The Nature Conservancy http://www.tnc.org http://vsbabu.csoft.net "The man who smiles when things go wrong has thought of someone to blame it on." --- Jone's Law

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How to get around non-propogating proxy roles, also security problem with zsql traversal?
by Brad Clements 16 Nov '00

16 Nov '00

Zope 2.2.2 on linux I have a web site where almost every page can only be viewed by authenticated (non anymous) users. I want to create one page that anonymous viewers can see. But to create this page I want to reuse (not duplicate) existing dtml, so I gave this page a proxy role "PUBLIC" and gave that role view and access contents rights. Unfortunately dtml methods called by this dtml document lose their proxy rights and revert back to anonymous, hence I get NameError and so forth from the called dtml methods. 1. Why is it that proxy roles don't propogate and accumulate when methods are called? 2. I'm actually using simple ZSQL traversal, like this: mysite.com/MyFolder/MyZSQL/138348343/PublicInfo PublicInfo is the DTML Doc with proxy role = PUBLIC. MyZSQL is an SQL Method that doesn't appear to be viewable by anonymous. However when called using simple traversal shown above, the SQL method IS executed. Is this a security bug? It seems that anonyous users can "call" an sql method using traversal even if security disallows anonymous View. Brad Clements, bkc(a)murkworks.com (315)268-1000 http://www.murkworks.com (315)268-9812 Fax netmeeting: ils://ils.murkworks.com AOL-IM: BKClements

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SiteAcess
by konteXXt＠t-online.de 16 Nov '00

16 Nov '00

Hallo, We tried to install SiteAccess. But when we try to connect with a SiteRoot Objekt, we get error: Error Type: TypeError Error Value: unexpected keyword argument: validated_hook [...] Traceback (innermost last): File /var/zope/lib/python/ZPublisher/Publish.py, line 222, in publish_module File /var/zope/lib/python/ZPublisher/Publish.py, line 187, in publish File /var/zope/lib/python/Zope/__init__.py, line 221, in zpublisher_exception_hook (Object: ApplicationDefaultPermissions) File /var/zope/lib/python/ZPublisher/Publish.py, line 162, in publish TypeError: (see above) When I remove the directory /var/zope/lib/python/Products/SiteAccess and restart the server again, everything works as before - except the siteroot functionality of course :-( Does someone have info how I can get SiteAccess to run correctly on my machine (Linux, newest Zope source distribution)? Any help would be appreciated! Doch wenn mittels apache zugegriffen wird, bringt der Zope-Server (2.2.2) eine Fehlermeldung. Traceback (innermost last): File /opt/igat/Zope/lib/python/ZPublisher/Publish.py, line 222, in publish_module File /opt/igat/Zope/lib/python/ZPublisher/Publish.py, line 187, in publish File /opt/igat/Zope/lib/python/Zope/__init__.py, line 221, in zpublisher_exception_hook (Object: ApplicationDefaultPermissions) File /opt/igat/Zope/lib/python/ZPublisher/Publish.py, line 162, in publish File /opt/igat/Zope/lib/python/ZPublisher/BaseRequest.py, line 338, in traverse File /opt/igat/Zope/lib/python/OFS/Application.py, line 251, in __bobo_traverse__ (Object: ApplicationDefaultPermissions) File /opt/igat/Zope/lib/python/ZPublisher/HTTPResponse.py, line 529, in notFoundError NotFound: (see above) What can we do ? We use Zope 2.2.2. and Linux. Thank you for help Mechtild -- in der Heimat tut sich was: http://www.wolterdingen.de konteXXt - Web-Konzept-Text-Design 07705 / 919391

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Re: [Zope] DTML and SQL question...
by Dieter Maurer 16 Nov '00

16 Nov '00

zope writes: > I want to test if there is some data in a table. In Zope, ZSQL methods return objects that behave like a sequence (of hit rows). In Python, an empty sequence is false while a non-empty sequence is true. Thus, you can use: <dtml-if "ZSQLmethod(....)"> .... to test any SQL query for a non-empty result set. The "_.len(...)" function returns the length of a sequence, in case you are interested in the number of hits. Dieter

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Re: [Zope] ZCallable
by Dieter Maurer 16 Nov '00

16 Nov '00

Stefan H. Holek writes: > I have this ZCallable product (from the PTK, I think). I do however not > manage to derive a ZClass from ZCallable. The error is something like "Too > many datafull base classes". > > Is ZCallable not intended to work like that (the source hints to > some ExtensionClass business) or am I missing something? The ExtensionClass docu tells that among all classes involved in a class, at most one extension class may define data extensions. Apparently, ZCallable is such an extension class that defines a data extension (or inherits from a class that does). And obviously, your class derives from another such class. If you are lucky, ZCallable is a superset of the other class and you can drop the other. Unfortunately, I do not know with ExtensionClass'es define extensions. Dieter

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Re: [Zope] Avoiding acquisition aka testing for contained objects
by Dieter Maurer 16 Nov '00

16 Nov '00

Stefan H. Holek writes: > If I want to know whether a certain object is contained in > the current folder I do this: > > <dtml-if "'index_html' in this().objectIds()"> > yes it's here > <dtml-else> > not here > </dtml-if> > > Id like to know whether this is the best/most efficient way to do it. > Things like hasattr() are subject to aquisition i.e. they would find > an index_html method along the acquisition path... There is a trick: <dtml-if "hasattr(aq_explicit,'index_html')"> avoids (implicit) acquisition. How it works: "aq_explicit" returns the explicit acquisition wrapper for "this". This wrapper does not acquire automatically but must be told explicitly. As "hasattr" does not to that, it tests for an attribute of "this()" and not an acquired attribute. Dieter

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How to use the manage_add - methods
by Espen Sorbye Frederiksen 16 Nov '00

16 Nov '00

I am a very novice zope/python user that needs to become an expert as soon as possible, since my whole dissertaion is based on Zope/Python. I have read all documentation availible on the zope.org site but can't find the answer to the following... 1. To run python scripts written as dtml methods. Do I simply use dtml-call from another dtml document/method? 2. To create folders, mthods etc in the code. I have found some functions manage_addDTMLMethod, manage_addFolder, but how do I use them? 3. I need to make a site that allows users to register ( i.e. to generate user folder with some standard documents in them). Anyone have hints regarding this? (or in fact a whole application I can use?) I appreciate any kind of contribution, Espen

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Invalid Date-Time String - Yihaw
by konteXXt＠t-online.de 16 Nov '00

16 Nov '00

Hello again, I use Yihaw and have a problem with the yihawNewsItem and IE (4.0): When I add a longer news, I got the error: Invalid Date-Time String with IE, not with netscape. The only way: I take a part of the massage and add the rest by editing. What's wrong ? Thank you for help Mechtild -- in der Heimat tut sich was: http://www.wolterdingen.de konteXXt - Web-Konzept-Text-Design 07705 / 919391

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Letting a user create something
by Anders Eriksson 16 Nov '00

16 Nov '00

Hello, I have installed the Yihaw product and it work just fine. But I have one problem, and I guess this is kind of a general question. How do I let the user do something? e.g. Create a folder. In this particular case it's a Yihaw folder (or any of the other Yihaw entities. I understand that the user must have the rights to do it (which I have done) but somehow there must be some method/function/special character that I can include in my dtml 'code' The standard dropdown box is just fine but I want to have it in my own page that has my coloring scheme, etc ... I guess that this is a stupid question but PLEASE PLEASE answer this question so I can continue my adventure into the world of Zope! -- Best regards, Anders mailto:ame@swipnet.se To me, boxing is like couples having sex, except there's no foreplay, no naked people and the people are hitting each other with big red gloves.

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DoD Users That You Know Of?
by Kraska, Andy W. 16 Nov '00

16 Nov '00

I am considering application of Zope to a Department of Defense (DoD) customer. It would be very helpful to talk with other DoD type users of Zope so we can establish to other DoD people that the product's already successfully in use. Can you give me contact information on any such users please? v.r ......Andy K. (719) 637-7324 and awkraska(a)tasc.com

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