August 2000 - Zope - Zope lists

newbie question -- can't delete toplevel folder
by Guy Middleton 10 Aug '00

10 Aug '00

I just installed Zope, and tried playing with it a bit. I can create a toplevel folder (in the "Zope" directory), but it then seems to be undeletable. Is this a problem, or is there something special about toplevel folders that I don't know? I can delete any contents I put in the folder with no problem, but not the folder itself.

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ANNOUNCE ZEO 0.2.2 Released
by Jim Fulton 10 Aug '00

10 Aug '00

A new bug-fiz release of ZEO is abailable at: http://www.zope.org/Products/ZEO. This release fixes a serious bug that was made effective by Zope 2.2.1 and recent changes checked into the Zope CVS. This release also provides fixes and documentation for the -S option to the server startup script, which allows any kind of storage and multiple storages to be served. If you encounter problems with ZEO, please report them using the ZEO issue tracker at: http://www.zope.org/Products/ZEO/Tracker. Jim -- Jim Fulton mailto:jim@digicool.com Python Powered! Technical Director (888) 344-4332 http://www.python.org Digital Creations http://www.digicool.com http://www.zope.org Under US Code Title 47, Sec.227(b)(1)(C), Sec.227(a)(2)(B) This email address may not be added to any commercial mail list with out my permission. Violation of my privacy with advertising or SPAM will result in a suit for a MINIMUM of $500 damages/incident, $1500 for repeats.

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Re: [Zope] application/octet-stream vs. application/msword
by Dieter Maurer 10 Aug '00

10 Aug '00

Jean Jordaan writes: > How does Zope recognize the type of a file? It uses "OFS.content_types.guess_content_type" (look at the source in OFS/Image.py), unless the manage_addFile specifies an explicit "content_type". > Can Zope be taught more types? Look at the source of "OFS.content_types". Dieter

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Re: [Zope] dtml-in sort question
by Dieter Maurer 10 Aug '00

10 Aug '00

Jean Jordaan writes: > I'd like to sort bunch of objects, and this doesn't seem to > work: > > <dtml-in "PARENTS[0].objectItems(['ccDocClassMetaType'])" sort=id> > > Should it work? How does one sort the results returned by an > expression such as the above? I think so. Does it not? I probably would use "objectValues" instead of "objectItems". "objectIdems" gives you a sequence of "id,value" pairs, "objectValues" gives you just the sequence of values. If your objects should not have an "id", the sort above would not work. In this case, you could try: <dtml-in "PARENTS[0].objectItems(['ccDocClassMetaType'])" sort=sequence-key> Dieter

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Re: [Zope] Reloading file objects?
by Dieter Maurer 10 Aug '00

10 Aug '00

Peter Arvidsson writes: > Does anyone know a way to get the file to show the new pdf-file when I > want to view it? You can use an "Expires" header to control how long a browser might cache a page. Dieter

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Re: [Zope] Splitting ZSQL results across pages
by Dieter Maurer 10 Aug '00

10 Aug '00

John Morton writes: > I'd like to split the output of a ZSQL query across different instances of > a page in the same fashion as zope.org does with ZCatalog output, but I > can't for the life of me find any documentation on how it's done. Does > anyone know the magic incarntations or where the documents are? Look at the "in" tag's batching features. Dieter

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ZEO 0.2.1 doesn't work with Zope 2.2.1 FileStorage
by Jim Fulton 10 Aug '00

10 Aug '00

There is a bug in ZEO 0.2.1 which was made effective by Zope 2.2.1 (which has just beed released in beta). I plan to release ZEO 0.2.2 shortly, which fixes this bug. If you are using ZEO, please hold off of using Zope 2.2.1 (or an up-to-date Zope public CVS) until you can install ZEO 0.2.2. Jim -- Jim Fulton mailto:jim@digicool.com Python Powered! Technical Director (888) 344-4332 http://www.python.org Digital Creations http://www.digicool.com http://www.zope.org Under US Code Title 47, Sec.227(b)(1)(C), Sec.227(a)(2)(B) This email address may not be added to any commercial mail list with out my permission. Violation of my privacy with advertising or SPAM will result in a suit for a MINIMUM of $500 damages/incident, $1500 for repeats.

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Re: ZEO and 2gb max limit for linux .. not for solaris etc.
by Jørgen Skogstad 10 Aug '00

10 Aug '00

Sven Hohage wrote: > > Hallo Jorgen, > I write you cause I've got a question about Zope. > You've posted on the mailing list on my question with the filesize of > the data.fs or in ZEO ZSS. > My problem is that I'd like to know which Unix - versions don't have > this filesize limitations and if there is a linux version without that > limit. > Or do you know another way to solve this problem?? > Many thanks > Sven Hmm.. well .. I can tell you what I know as of today. Linux has this limitation as of today. At least all the variants I have come over (mostly Red Hat and Suse). The limitation is in the filesystem implementation itself; meaning that the number of "references" that can be created cannot exceed the address limit of 2gb. Solaris does not have this limitation and neither does Hp-Ux or SGI Irix. I know previous versions of SunOS (v4.x) had the same limitation as linux is experiencing today. Though.. there are ways "around" the problem. Though; all different over the variuos unix versions as of today. When running Zope you really don't have much choice on linux. When you hit the 2gb barrier .. you have problems. I have not tried it .. but as I can recall there was a product for Zope that made it possible to "mount" several databases at once .. though it was beta. .. this might solve a problem .. and would from my point of view be a nice way to go. This way; the administrator of the system also have some choices as to where he want to put his data. Then you can move certain object databases to fast storage .. and so forth. .. so; if you have those problems; get Solaris v7/v8 for Intel (or if you can afford it-> sparc!) .. and run Zope of that. I do so .. but then again; I am not near the 2gb barrier that many people have come over. ;) .. on the other hand; I am not aware of the various "beta" filesystem implementations and kernel "to-do"'s for linux, but I suspect that it will not be long before that problem is solved. .. oh! When I think of it.. SGI has ported their XFS to linux. Not sure how far that implementation has gone yet.. but the link to check out is; http://oss.sgi.com/projects/xfs/ Looks promising.. and a "production" like filesystem for linux is a "must" as far as I can see. ;) Just read the brief here; Sub-second filesystem recovery after crashes or power failures (never wait for long fscks again) 64-bit scalability: millions of terabytes, millions of files, and a million files per directory (no more 2 GB limits) High reliability and performance from journaling and other advanced algorithms Hope that helped a bit?? .. just shoot if there's more I can help with! ;) -- Med vennlig hilsen, Jørgen Skogstad /\ System Specialist \\ \ \ \\ / Sun Microsystems AS / \/ / / Gjerdrums vei 12 / / \//\ N-0486 Oslo, NORWAY \//\ / / / / /\ / Phone: + 47 22 02 39 00 / \\ \ Cellular: + 47 92 41 30 23 \ \\ Fax: + 47 22 02 39 99 \/ EMail: jorgen.skogstad(a)Norway.Sun.Com Web: www.sun.no BTW; Opinions formed by myself in informal mailings are mine and not of my employer.

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Re: [Zope] ZClass inheriting from image question
by Meeting Maker Webmaster 10 Aug '00

10 Aug '00

Hello, At 16:31 10.08.2000 +0000, Kapil Thangavelu wrote: > > I am still working on my "users preferences" I mentioned earlier. For now >I > > will stay with the standard acl_users as they seem to offer everything I > > currently need to authenticate the user. On the other side, I am creating >a > > new ZClass that will be used to store the user information in properties. > > As I finally also want to store the picture of the user, I decided to > > create ZClass that will subclass _ZClass_for_Image. > > > > I want to change the default way the ZClass renders it's information. I > > want more than simply a picture so I crated a new method "index_html" in >my > > ZClass. > > > > My question is: How do I display the picture from this index_html method? > >from the Image.py file > ><dtml-var tag> should do it This doesn't work. The problem is that <dtml-var tag> returns the <IMG ...> tag using the object name. Well if it does that, it will use the content of index_html, resulting in an error. Thank you. Best regards, Gérard Métrailler Jr. Meeting Maker Inc. ... the intelligent choice for collaborative scheduling Email: webmaster(a)meetingmaker.com Web: http://www.meetingmaker.com

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ANNOUNCE NewsCenter 0.0.5
by Kapil Thangavelu 10 Aug '00

10 Aug '00

A week's worth of hacking to present NewsCenter. I'll bump of the version numbers once I get a few more features and get some feedback from the community regarding any fixes and pretty up the interface. Its stable for me and works well. Thanks to Amos and Shane of DC for contributing (RSSChannel, XMLDocument) and (BTreeFolder) respectively without which I wouldn't have been inspired to make this Product. location: http://www.zope.org/Members/k_vertigo/ZopeProducts/NewsCenter >From The Readme NewsCenter is a Zope/XML application that aims to be a resouce for Zope sites to allow their users access to the latest headlines from around the world on many different topics. It would like to bring order to this mass of information by making it searchable and displayed in a format that is easy to navigate and also allow users to have email syndication of channels that they are interested in. NewsCenter's news acquisition is based on the import of aggregate channel listings in a variety of xml formats. NewsCenter was designed for site managers to individually publish channels contained within a channel list. Furthermore because of performance considerations when importing a large number of channels or a large channel list it has options for the xml files to be loaded from the file system as opposed to the default settings which obtains them directly from the web. <b>Current Status:</b> - NewsCenter supports aggregate channel lists in the ocs format. - NewsCenter supports channels in the RSS.91 format - i've imported over 750 channels using ocs files from http://www.xmltree.org (1.1M) http://www.xmltree.com/export/ocs.cfm and http://www.moreover.com (768K) http://www.moreover.com/categories/ocs/ocsdirectory.rdf Btw. next on the todo list is add ZCatalog searches and meerkat channels (http://www.oreillynet.com/meerkat) REQUIRES- Zope-2.2, BTreeFolder, XMLDocument, PyXML Package(sourceforge) http://www.zope.org/Members/hathawsh/BTreeFolder/ http://www.zope.org/Products/XMLDocument http://sourceforge.net/project/?group_id=6473 INSTALL- untar in your zope directory LICENSE- LGPL for everythin except for the dcRSSChannel(dublin core) which is ZPL'd please email me any feature request, comments, bugs, patches, yahtzee:) Cheers Kapil

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