March 1999 - Zope-Dev

Difference between C and Python versions of TemplateDict?
by Brian Hooper 13 Mar '99

13 Mar '99

Hi Zope-Devvers, Anyone have experience with the below kind of problem? I'm working on trying to make a Product which is reference-able using an in tag, like:    I've made a Product along these lines: class MyProduct( Acquisition.Implicit, Persistent, AccessControl.Role.RoleManager, OFS.SimpleItem.Item): def __init__(self): self.items = [MyItem(1), MyItem(2), MyItem(3)] def __call__(self, *args, **kw): return self.items def __len__(self): return len(self.items) def __getattr__(self, index): return self.items[index] class MyItem: def __init__(self, v): self.myvalue = v When I include the above  DTML in a document and view it, it gives a TypeError (2 args expected instead of 1) on the following line in DocumentTemplate.DT_In.renderwob: sequence=md[name] However, the exact same code works if I change DT_Util.py so that it uses pDocumentTemplate instead of cDocumentTemplate for the TemplateDict class definition. What's going on here? Is there some difference in the way this lookup is being done in pDocumentTemplate.TemplateDict and cDocumentTemplate.TemplateDict? I'm doing my best to understand what's going on on my own, but if anyone has an easy solution please spin it my way! Document Templatingly yours, -Brian Hooper

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Re: [Zope-dev] EJB
by Robin Dunn 13 Mar '99

13 Mar '99

Zope couldn't host an EJB, but some EJB containers (application servers) provide CORBA interfaces for accessing the EJB's either directly or indirectly. Using Fnorb you could implement the client-side proxies in Python and then should be able to talk to the EJB's from Zope. -- Robin Dunn robin(a)AllDunn.com http://AllDunn.com/robin/ http://AllDunn.com/wxPython/ Check it out! Try http://AllDunn.com/laughworks/ for a good laugh. -----Original Message----- From: umun <umun(a)cyberdude.com> To: zope list <zope-dev(a)zope.org> Date: Wednesday, March 10, 1999 5:15 PM Subject: [Zope-dev] EJB >Hi, > >As I am new to Zope, I hope I will not offend the people on the list if >this question has been asked before. Does the Zope development platform >support Enterprise Javabean Specs (1.0)? > >Don't get me wrong. As I am still evaluating Zope, I am very impressed >with the features that Zope offers but would like to consider >interoperating it with other EJB compliant frameworks like BEA WebLogic, >etc. > >rdgs > >umun > > >_______________________________________________ >Zope-Dev maillist - Zope-Dev(a)zope.org >http://www.zope.org/mailman/listinfo/zope-dev > >(For non-developer, user-level issues, use the companion list, >zope(a)zope.org, http://www.zope.org/mailman/listinfo/zope ) >

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De-Authentication / Logout
by Jason Spisak 13 Mar '99

13 Mar '99

Zope-misters Is there a setUser type method for AUTHENTICATED_USER? I have tried everything, and there isn't any docs. I am trying to have a user logout without having to quit Netscape. Any thoughts? -- Jason Spisak webmaster(a)mtear.com

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Net-Pa �nternet :)
by 2 Free Books ! (Totally) 13 Mar '99

13 Mar '99

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RE: [Zope] Some tough questions about zope... (long)
by Paul Everitt 12 Mar '99

12 Mar '99

Richard wrote: > Paul wrote: > > We put them in the database. The 3 Mb Zope binaries are > served out of > > the database, the PDF files are served out of the database. > This works > > so well I don't even think about it any more. > > Would you address the "to be uploaded" aspect. Unfortunately, from the > Zope POV, not all information formatters are written on Python. Zope currently speaks HTTP. Any programming language that fully implements the HTTP spec can talk to Zope. Skip is also using XML-RPC to get to Zope via Perl. Jim has spent some time thinking about adding XML-RPC support to the publishing system. Zope supports "Netscape Publishing", aka HTTP PUT. Thus you can sit in Netscape Composer and blast a whole directory into Zope in one fell swoop. Let's see, some other choices. When ZServer gets a little farther along you can use FTP. When we release the WebDAV support in Zope, you'll be able to use IE5, FrontPage 2000, and a number of other products to move information into and out of Zope. Until then you can use the command line WebDAV clients like sitecopy. > I certainly don't want to reinvent wheels. As a result, I need to do > automatic dynamic replacement of content. "Including" a file which has > been generated by the external program is certainly easier probably > more efficient than generating the file, importing a copy into the > database, and serving it from there. It might appear that way, but there are other points of view as well. Do you re-read the file on every request to re-parse it, the way PHP does? If you cache the contents, you'll still have to stat the file on every request, as well as any subdocument. Let's see, you'd also lose the benefits of the Zope cache. You'd obviously lose all concept of versioning and undo. Transactions will no longer work. Unless you invented some file-based meta information, you wouldn't be able to have properties or assign security or ... > Mentally, I look at a file system as an implementation of a database > which has structured keys and is efficient at supplying large > "results" > (the file) from the (path) key. Sure, it can do that. Can it do any of the other things the Zope database does? I understand that integrating filesystem information is appealing, but it certainly comes at both a feature and performance cost. If this is acceptible, then go for it. It should be pretty easy to write a "Disk Folder" that integrates a directory on the filesystem. --Paul

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RE: [Zope] Some tough questions about zope... (long)
by Richard Wackerbarth 12 Mar '99

12 Mar '99

On Fri, 5 Mar 1999, Paul Everitt wrote: > Tony wrote: [...] > > h) We also need resources such as QuickTime movies, images PowerPoint > > slides etc. to be uploaded - would they sit in the database or can > > they be held somewhere else (and what happens about file name > > conflicts)? > > We put them in the database. The 3 Mb Zope binaries are served out of > the database, the PDF files are served out of the database. This works > so well I don't even think about it any more. Would you address the "to be uploaded" aspect. Unfortunately, from the Zope POV, not all information formatters are written on Python. I certainly don't want to reinvent wheels. As a result, I need to do automatic dynamic replacement of content. "Including" a file which has been generated by the external program is certainly easier probably more efficient than generating the file, importing a copy into the database, and serving it from there. Mentally, I look at a file system as an implementation of a database which has structured keys and is efficient at supplying large "results" (the file) from the (path) key. Perhaps we should implement file access through such a model.

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RE: [Zope-dev] Zope.org public CVS, preliminary trial
by Paul Everitt 12 Mar '99

12 Mar '99

Anthony wrote: > Ken "I've been staring at this too long" Manheimer wrote: > > http://www.zope.org/Community/Support/CVS_public_access > > I get 'Sorry, the requested document does not exist.' for this page. I *think* Ken sent a correction. If not, here is the correct URL: http://www.zope.org/Community/Services/CVS_public_access --Paul

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Want to test if User Equal to a Property
by Jason Spisak 12 Mar '99

12 Mar '99

Zopsters, I am attempting to tailor the way information gets viewed based on a person's login. When the user get's to the page described by the following code, I would like the page to look one way if the 'owner' property in the parent folder is equal to the user, and look the other way if they are not equal. The following code makes sense, but does not work.        The _[owner] property is stored as a string. And AUTHERNTICAED_USER.getUserName() returns a string if I'm not mistaken. The look-up for _[owner] without single quotes is because I'm not looking up an object, but a property, right? The document is a DTML Method. Do I have to reference the Parent in the lookup? All the best, Jason Spisak webmaster(a)mtear.com

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Zope.org public CVS, preliminary trial
by klm＠digicool.com 12 Mar '99

12 Mar '99

Hi, all. As threatened, i've set up a public CVS repository for the Zope sources, and left instructions for using it at http://www.zope.org/Community/Support/CVS_public_access Consider this a preliminary trial. I'd appreciate if interested folks would give it a try, and let me know if you have problems (or find mistakes in the instructions, etc). Once things are ironed out we'll organize the services pages a bit and hook it all up for general consumption. We've recently arranged the CVS distribution to enable running directly from the checked out sources (ie, following the distribution's doc/INSTALL.txt instructions). This also is only lightly tested, and would be interested in finding out how that works for people. Finally, my next task is to write up instructions for mirroring your own Zope CVS repositories to Zope.org, for public access. Let me know if you have something substantial that you'd like to distribute this way - i'd like to start with just a few folks, to iron it out, before going large scale, but it is on the way (i think:). Let me know how it goes! Ken Manheimer klm(a)digicool.com

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RE: [Zope-dev] the mad cookie (tm), and a bug with IE 3.x
by Paul Everitt 12 Mar '99

12 Mar '99

Jephte wrote: > I wonder... in lib/python/Products/OFSP/Session.py, the expiring date > for the cookie is commented out. According to the specs, this > mean that > the cookie expires when you close the browser. Does this mean that > a session last only until the browser is closed? The information about > the open session must be stored elsewhere. Correct, the changes are stored in the database of uncommitted transactions on the server. BTW, thanks to Michel Pelletier here, the word "Session" has now been stricken and replaced, as long promised, by "Version". Those of you checking out Zope from CVS might notice this. Michel also starting work on renaming and fixing Principia Drafts, as well as work on an honest-to-goodenss Session object. Oh, and he also gave a *killer* demo of NotMail yesterday. He has hooked the folders to the tree tag and implemented a connection manager object that dramatically speeds up response time. Unfortunately he's out for a week. :^) Those of you doing a CVS checkout might also find out our big announcement for today. --Paul

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