November 2000 - Zope

ZPyGreSQLDA on Tru64?
by Stephane Bortzmeyer 27 Nov '00

27 Nov '00

Zope tells me that my ZPyGreSQLDA (PostgreSQL interface) is broken and yields the following trace: ZPyGreSQLDA Import Traceback Traceback (most recent call last): File "/local/src/Zope-2.2.2-src/lib/python/OFS/Application.py", line 397, in import_products product=__import__(pname, global_dict, global_dict, silly) File "/local/zope/lib/python/Products/ZPyGreSQLDA/__init__.py", line 89, in ? import sys, os, Globals, DA File "/local/zope/lib/python/Products/ZPyGreSQLDA/DA.py", line 91, in ? from db import DB File "/local/zope/lib/python/Products/ZPyGreSQLDA/db.py", line 89, in ? import _pg, regex, sys, types ImportError: dlopen: cannot load /usr/local/lib/python2.0/site-packages/_pgmodu le.so but : wallis:/local/zope> ls -l /usr/local/lib/python2.0/site-packages/_pgmodule.so -r-xr-xr-x 1 root system 65536 Nov 24 15:50 /usr/local/lib/python2.0/site-packages/_pgmodule.so Zope version: Zope 2.2.2 (source release, python 1.5.2, linux2) Python version: 2.0c1 (#2, Nov 24 2000, 11:08:10) [C] System Platform: osf1V4 Process ID: 9128 (5381388672) Running for: 1 min 52 sec

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Re: [Zope] ZPyGreSQLDA on Tru64?
by Dieter Maurer 27 Nov '00

27 Nov '00

Stephane Bortzmeyer writes: > ImportError: dlopen: cannot load /usr/local/lib/python2.0/site-packages/_pgmodu > le.so I expect, that "_pgmodule.so" needs some other shared object or symbol that is unavailable. Try "import _pg" in an interactive Python interpreter. I remember that in some cases I got a better error message that indicated precisely, what was missing. If it does not, then you may try "ldd _pgmodule.so" to list the shared objects required by "_pg". It will tell you, when there are some missing. I hope, that one of these approaches will reveal what is wrong. Otherwise, it would probably be a missing symbol. But it is quite difficult to detect which one. Dieter

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AND operator and ZCatalog
by Bak ＠ kedai 27 Nov '00

27 Nov '00

hello i've read and reread advance ZCatalog howto by Zen, and still failed to do what i want. the situation i have a ZCatalog that indexes news. i use keyword index, and text index. when i try <dtml-in "Catalog(publication=myPub,section=mySec,date_posted=myDate)"> <br> <a href="<dtml-var SCRIPT_NAME>/<dtml-var "getpath(data_record_id_)"> "> <dtml-var title></a> <p><dtml-var publication>|<dtml-var abstract>|<dtml-var section> <dtml-var myDate></dtml-in> it seems that the search was ORed, not ANDed. i hope i'm clear enough. thanks -- http://www.kedai.com.my/kk http://www.kedai.com.my/eZine Strange how laughter looks like crying with no sound, and raindrops taste like tears .. without the pain

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Re: [Zope] LoginManager Help.
by Dirksen 27 Nov '00

27 Nov '00

You can gain some enlightenment from these two documents: http://www.zope.org/Members/Zen/GenericUserFolder/walkthrough http://www.zope.org/Members/jok/SQL_based_LoginManager --- "Jason C. Leach" <jleach(a)mail.ocis.net> wrote: > hi, > > So I have LoginManager installed. The easy part. Now I'd like to know how > to use it. To start with, I'd like to authenticate against a standard > acl_users folder or a plane text file w/ username/passwords in it. > > I just have no idea how to get cracking on this since the documentation > on LoginManager is pretty short. > > I don't mind doing the SQL method, if I don't have to install a 3rd party > Database like mySQL or Postgres. It's a bit of an overkill so several > users. > > Thanks, > j. > > ...................... > ..... Jason C. Leach > ... University College of the Cariboo. > .. > > > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://lists.zope.org/mailman/listinfo/zope > ** No cross posts or HTML encoding! ** > (Related lists - > http://lists.zope.org/mailman/listinfo/zope-announce > http://lists.zope.org/mailman/listinfo/zope-dev ) > __________________________________________________ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.yahoo.com/

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LoginManager Help.
by Jason C. Leach 27 Nov '00

27 Nov '00

hi, So I have LoginManager installed. The easy part. Now I'd like to know how to use it. To start with, I'd like to authenticate against a standard acl_users folder or a plane text file w/ username/passwords in it. I just have no idea how to get cracking on this since the documentation on LoginManager is pretty short. I don't mind doing the SQL method, if I don't have to install a 3rd party Database like mySQL or Postgres. It's a bit of an overkill so several users. Thanks, j. ...................... ..... Jason C. Leach ... University College of the Cariboo. ..

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is it possible to see whether any user is using a perticular zope object
by subrahmanyan kalathur 27 Nov '00

27 Nov '00

hello , I am subrahmanyan. I am using zope for my project. Now I would like to know is it possible to know if any body is using the zope object. I mean , if one user is running one DTML method , I want to know that one user is using that object. Is there any DTML tag for that. thanks. bye yours, K.H.Subrahmanyan ( subrahmanyan.kalathur(a)wipro.com )

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Re: [Zope] Python and EJB (J2EE)
by Hung Jung Lu 27 Nov '00

27 Nov '00

>1) EJB's are TRANSACTIONAL components (MTS components are also >transactional) Thanks for your comments. Transaction certainly is one of the important features of EJB. But my personal opinion is that instance pooling (multi-threading) is even more important. If you have to implement a components server from scratch, and you can only do so much, which feature would you implement first? Transaction? Or Multithreading? I think the answer is Multithreading. >All this can be specified in a deployment-descriptor - an XML >"properties" file. Yeap. :) XML "properties" file is the way to go. For many things. > Thus multiple database servers at different sites on the net can >participate in a single transaction. This implicitly involves TWO-PHASE >COMMIT and XA/TX interfaces. In plain words, if one database engine in a >distributed transaction decides to rollback, all other engines must >rollback as well. Two-phase commit is crucial. That's why I explicity mentioned it in my original message: the final commit must be done in matter of milliseconds, if not microseconds. Let's face it, the commit action takes time. There is never a 100% sure trasaction. NEVER EVER, since the transaction can fail exactly when you are performing the commit action. So the next best thing to do is to commit in two phases: (1)prepare to commit: which can take a few seconds to prepare everything up to the point of hanging all the transaction changes on one single index field (a few bytes), (2) Final commit: modify those few bytes, which on a single machine means of the order of nano-seconds, and on distributed transaction, microseconds to milliseconds. Milliseconds certainly is still not very comforting, but it beats a commit action that takes 30 or 40 seconds that is totally unacceptable in business. >Hence EJB's can potentially participate in DISTRIBUTED TRANSACTIONS. Yes, totally agree with you. >4) ENTITY EJB's allow programmatic access to database rows That's the object mapper. I am not sure, though, whether it's the best approach to put the object mapper as part of the Components Server. The fact that even SUN's own people recommend against using entity beans tells me a lot. Object mapper can be used as an independent utility, outside the Components Server. >We need more of these for transactional components. However I think >before that Zope will need to evolve to include the next level of >sophistication in DB transaction >management, especially two-phase commit, XA/TX ..., support for existing >transaction co-ordinators, and/or provide one. I've mentioned two-phase commit to Digicool people. Not sure whether it's already inside Zope or not, but it seems not. Zope's TM (Transaction Machinery) does not seem to be two-phase. See the TM.py file itself: it only has def _finish(self): self.db.commit() That is, I don't see the equivalent of prepare_to_commit(). If you know where to get more info on XA/TX, could you provide some pointers? thanks, Hung Jung _____________________________________________________________________________________ Get more from the Web. FREE MSN Explorer download : http://explorer.msn.com

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Instance within Instance
by Daryl Stultz 27 Nov '00

27 Nov '00

Hi Folks, I have a product folder called "TestClass" with 2 ZClasses: class1 and class2. The following is an exerpt from the class1 constructor: <dtml-with "class1.createInObjectManager(REQUEST['id'], REQUEST)"> <dtml-call "REQUEST.set('id', 'myClass2')"> <dtml-call "class2_add(_.None, _, NoRedir=1)"> </dtml-with> I want class2 to be created INSIDE of the class 1 instance. Instead, class2 (always with an id of "myClass2") is created at the same level as the class1 instance. How do I change the namespace to get the class2 instance inside class1? Thanks. -- "I ain't no stewin' rabbit, I'm a fricassein' rabbit. Have you got a fricassein' rabbit license?" Daryl Stultz - python, blender, robots, really bad harmonica playing... daryl(a)together.net RedHat Linux 6.1 - Dual Pentium Pro

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security
by Bowyer, Alex 27 Nov '00

27 Nov '00

Can some one explain how the Define Permissions screen works. I really don't understand the concept behind it, what does it mean for a permission setting to own a permission? All I need to do is to make certain ZClass methods have a certain level of security and the other methods of the class have no security. Any tips, advice or best of all EXAMPLES most appreciated! Thanks Alex ================================== Alex Bowyer IT Contractor, Logica Australasia Tel : +61 2 9202 8130 Fax : +61 2 9922 7466 E-mail : bowyera(a)logica.com WWW : http://www.logica.com.au/ ==================================

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Re: [Zope] Authenticating Users.
by Dieter Maurer 26 Nov '00

26 Nov '00

Jason C. Leach writes: > How can I authenticate a user from a form. Pretty much exactly how > zope.org logges you in? > > I have looked at both zope.org's login and logged_in (the action for > login) and don't see where it actually goes and checks the > username/password? This check is performed in "UserFolder.validate" called from "ZPublisher.BaseRequest.traverse". Apparently, zope.org supports cookie based authentication. This means, it does not use the standard Zope UserFolder but another one supporting this type of authentication. Dieter

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