July 2000 - Zope-Dev

RE: [Zope-dev] PATCH: Expanded "access" file
by Phillip J. Eby 25 Jul '00

25 Jul '00

At 10:54 AM 7/25/00 -0400, Brian Lloyd wrote: > >I think that this is _definitely_ the kind of thing that >should be done in the fishbowl on dev.zope.org. Why? Because >while it may be a "minor patch" in terms of lines of code, just >applying the patch causes a number of problems that have nothing >to do with software per se. Sorry about that. As you may have seen from the list, I did enquire as to whether this should go in the fishbowl, and was told that such a minor patch probably didn't need it. I thought the issue was more complex than it was also; I was under the impression that Zope had a user folder *above* the official "root", not realizing that it was merely that the "physical root" had a default user folder in existence. > What is the problem being solved? How exactly does this solve > it? Is it the right solution? Why did we make the decisions we > made? Of course some discussion of these has occurred on the dev > list, but the only way I (or anyone else) can discover these is > to piece things together by searching list archives. Problem being solved: the new ownership model requires a place for ownership to "bottom out" so that user databases themselves can have owners. The previous solution was the creatable-by-super hack, which only created further holes in the ownership model, since user databases which involved components which followed the security model (e.g. GenericUserFolder and LoginManager) then had to suppress ownership characteristics or else be unusable as a root-level user database. Second problem: the initial existence of only a single Zope user who could not actually do anything except create a UserFolder, was troubling to new users of Zope and at best inconvenient for experienced ones. > o There is no visibility of the impacts of the change. > > How does this affect ownership? Does this work with all existing > user folder objects, or do they all need to change to support it? * The "rootUsers" can own things * They appear to be normal members of the root UserFolder, except that they do not appear in its contents as they are not stored there. * It is not necessary for a user database to support the rootUsers; however if the top-level user database of a Zope installation does not support them, they will not be usable in that installation. * User databases using the existing name==super.getUserName() protocol are unaffected; they simply will not provide access to the new rootUser objects. * User folder objects must be changed to support the rootUsers dictionary. The patch provides this support for the Zope UserFolder object. In practice, I believe that there is a relatively small (i.e. near-zero) number of publically-available user databases currently in existence which correctly support the Zope 2.2 security model, apart from those developed by DC themselves. Private developers of user databases need only implement the support if they would like the additional feature, and for the rest, I believe this patch should actually make it easier to implement 2.2 support for most such user databases, since they won't need to implement the creatable-by-super protocol or work through ownership issues. > o This would become Yet Another Undocumented Feature. > > One of the big things that the dev area is going to do is to force > us to assess the documentation impact of changes and ensure that > the required documentation is produced and integrated with the > appropriate offical or unofficial docs. I can see the expanded > access file change potentially having an effect on at least two > kinds of documentation (user/admin guides and developer materials > regarding how to implement new kinds of user folders). My assumption was that this feature would actually be easier for DC to document than explaining to someone why they have to log in as superuser, create a user folder, put a user in it, then log out by closing their browser, and then log back in again as that other user in order to start using their Zope installation. My intent was to make both your and my life easier, not more complex. I apologize for any such side effect. :(

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RE: [Zope-dev] Wiki apps other than ZWiki 0.6.1
by Brian Lloyd 25 Jul '00

25 Jul '00

> I've been happily adding ManagedMode functionality to ZWiki > 0.6.1 but wonder > what other Wiki-on/in-Zope technologies there are that I > should consider > working with. I'm looking for cataloging, graphics upload, > differencing, > rename and delete and don't really want to have to work on > them myself if > these have been done or are soon to be done. > > Searching on 'Wiki' appears to be useless, since the word > crops up in so > many contexts, hence my appeal for information. Geoff, There is a 'WikiNG' proposal on the dev.zope.org site that it sounds like you might want to get in on: http://dev.zope.org/Wikis/DevSite/Proposals/WikiNG Hope this helps! Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

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Oracle as ZODB replacement ?
by Francisco Assis Rosa 25 Jul '00

25 Jul '00

Hi there, I am looking at Zope and have read about the possibility of using any other database instead of ZODB. I was particulary interested to know if there is any implementation to allow replacing ZODB by Oracle. Do you know of any such implementation ? Thanks, Francisco. -- Francisco Assis Rosa email: rosa(a)dynamicdiagrams.com Dynamic Diagrams tel: 401.331.2014 ext. 136 12 Basset St., Providence, RI 02903 fax: 401.331.2015

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RE: [Zope-dev] Problem
by Chris McDonough 25 Jul '00

25 Jul '00

Anvita, It's possible you could reuse these components via COM using Mark Hammond's COM stuff for python... this isn't really Zope-specific. See http://www.python.org/windows/win32com/ for more information. -----Original Message----- From: Anvita [mailto:anvita@iitk.ac.in] Sent: Tuesday, July 25, 2000 2:16 AM To: zope-dev(a)zope.org Subject: [Zope-dev] Problem Hello Sir, I want to create a portal for indian languages using zope. The problem is that the programms which handles all font related issues or text to speech conversion etc for the site (for Indian Languages) are in C and Visual Basic and the programmes are too lenthy that we cann't rewrite them. Kindly tell me is there any way to use tham with zope. Thanking you, Yours truly, Anvita Bajpai Research Engineer IIT Kanpur - India.

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RE: [Zope-dev] PATCH: Expanded "access" file
by Brian Lloyd 25 Jul '00

25 Jul '00

> >>Hm. I don't think this could be classed as a "minor" > change, however, > >>since it has impact on ownership, for example. What's the > path of the user > >>folder which is above "/", for example? The whole thing is > useless if > >>these extra users can't be owners, and the ownership > machinery right now > >>wants an access path. I think perhaps we should go the > fishbowl route on > >>this, if only to make sure that Jim doesn't have a heart > attack when he > >>gets back. :) > > > >Looks like I was wrong. This was in fact quite a minor > patch. I've only > >tested this lightly so far, but if anyone else wants to try > it out, here it > >is. Hi all - I think that this is _definitely_ the kind of thing that should be done in the fishbowl on dev.zope.org. Why? Because while it may be a "minor patch" in terms of lines of code, just applying the patch causes a number of problems that have nothing to do with software per se. They are the same problems that I get beaten about on a daily basis for everything that has ever been added to Zope to date :^) They are the problems that dev.zope.org is being designed to solve: o There is no visibility of the reason for the change. What is the problem being solved? How exactly does this solve it? Is it the right solution? Why did we make the decisions we made? Of course some discussion of these has occurred on the dev list, but the only way I (or anyone else) can discover these is to piece things together by searching list archives. o There is no visibility of the impacts of the change. How does this affect ownership? Does this work with all existing user folder objects, or do they all need to change to support it? If they all need to change, shouldn't we make sure that the authors of other implementation generally buy into this? What other issues might there be? Again, we can only scour the list archives :( o This would become Yet Another Undocumented Feature. One of the big things that the dev area is going to do is to force us to assess the documentation impact of changes and ensure that the required documentation is produced and integrated with the appropriate offical or unofficial docs. I can see the expanded access file change potentially having an effect on at least two kinds of documentation (user/admin guides and developer materials regarding how to implement new kinds of user folders). The structure of projects in the dev area is such that a finished project tells a story. What was the problem? What was the solution? How was it done? What documentation or other resources were created as a result? All of those things are available in one place once a project is complete. Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

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How can Catalog index all parts/words of a attribute
by Thomas Weholt 25 Jul '00

25 Jul '00

Hi, I try to use Catalog with a object stored in ZODB3. I need to match single words in attributes in what might be a long string with several words in it. I've tried to set "self.cat.addIndex('name' ,'TextIndex' )" which is supposed to be full text searching at least said to be in the Zope-pages when creating a catalog in Zope. But when I try to search for objects they only return stuff if I enter the entire content of the attribute in question, not parts of it. This is not a Zope-product yet, but a foundation for a future product. I'm working on a full-text searching command-line interface, so nothing of this can be done thru Zopes web-interface at this point. the code has been posted earlier, in "Now; - problems using ZODB/ZCatalog in Python". Any quick hints? Thomas

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Stuff hanging off user not in cookies
by Chris Withers 25 Jul '00

25 Jul '00

Hi, small rant (no change there for me ;-) Is there are reason why configuration info for the user doesn't hang off the user object and is instead stored in cookies? I'm thinking of the dimensions/etc of the edit boxes and the like. I do a lot of work through virtual domains and it's a real pain having to resize that edit box every time I log in through a different domain or on a different computer... cheers. Chris

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Use ZODB3 and ZCatalog for indexing purposes
by Thomas Weholt 25 Jul '00

25 Jul '00

Hi, I'm wondering about using ZODB3 and ZCatalog for a CD-indexing project. The actual cd-roms will seldom change after they've been registered, and I'd like to have some sort of auto-full-text-search feature. How does ZODB3 and ZCatalog fit in this picture? I'm NOT making a Zope-product yet, just a plain python-script, using ZODB/ZCatalog for storage. Later, the thing will have a Zope-interface, but for now I'm having so much trouble with my current implementation using PostgreSQL, mostly due to the fact that I cannot get full-text-searching, that I really need some progress now. I'm dealing with plain python objects the entire time, but searching is alpha/omega in this case and will break it completly if not implemented correctly. Any hints, tips, flames or just emails sent out of boredome, I'm a lonely coder who needs a stinkin' break before I go completly nuts, so any feedback will be great. :-> Thomas

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Nameconflict 'Property' and Object in Folder
by Martin Grönemeyer 25 Jul '00

25 Jul '00

Hi all, has there some discussions about a name conflict, if I start to add an object to a folder with an object-id wich is also a Property of the folder ? In the method _checkId of the ObjectManager e.g. the folder is checked with hasatrr(this,id). And this is true if there exists a property with the same name as the object-id. I see no workaround, because a property or an object are attributs of the folder. Any comments ? Martin

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ZODB : store and retrieve (more specific)
by jdiebold＠imexpert.com 25 Jul '00

25 Jul '00

Hi, I want to create a persistent List (I want to store data for a long time without using a relational database). I have found source of such list but I don't know how to use it. The things that I want to know are : --> how could I use personnal object (in Python language) --> how could I store and retrieve these object ? I Hope that anybody can help me.... thanks...

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