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Re: [Zope-dev] RAM Cache Manager "next_cleanup" not working?
by J�lio Dinis Silva 18 Jul '01

18 Jul '01

Hi all, Looking into lib.python.Products.standardCacheManagers.RAMCacheManager.py I found something it looks like a problem in the code and I came to a solution which solves the problem in subject althougt I dont know If this is a safe solution, It works for me. - In RAMCacheManager.RAMCache.ZCache_set() there is a set of the Cache Manager's next_cleanup variable. - With this var we can then test if its time to cleanup and if yes call the self.cleanup() method. But this test is never made in the RAMCacheManager code, except at calls to ZCache_set!?! - At the top of ZCache_set() there is this code: now = time.time() if self.next_cleanup <= now: self.cleanup() self.next_cleanup = now + self.cleanup_interval I think this code should also exist at the top of the method ZCache_get. I put it the following code at the top of the ZCache_set(): now = time.time() if self.next_cleanup <= now: self.next_cleanup = now + self.cleanup_interval return default I think the right thing to do here is to call self.cleanup instead of returning default but then again there is something strange in the cleanup method, because it only tests for the threshold limit and never tests the cleanup_interval constraint. I will change the cleanup method to my needs and call it where I'm doing the "return default". Anyone seen this problem / is working on this? Best Regards, Julio Dinis Silva >From: "Júlio Dinis Silva" <juliodinis(a)hotmail.com> >To: kevinsl(a)yahoo.com >CC: zope-dev(a)zope.org >Subject: [Zope-dev] Re: [Zope] RAM Cache Manager "next_cleanup" not >working? >Date: Wed, 18 Jul 2001 12:23:58 +0100 > >Hi, > >From Zope-2.3.1 CHANGES.txt: >-Fixed two mistakes in the RAM cache cleanup code. >Dont know if this was related, but I've tested the simple example >on the email below with 230, 231, 232, 233 getting the same >problem, i.e, cleanup after 5 seconds doesnt happens. > >Doing a search form "ram cache" in the collector I found: >Zope Question: Cache Problem >Submitted: 2001/06/28 >* * * This item is under review * * * >Anyone? > >Best Regards, >Julio Dinis Silva > > >>From: Kevin L <kevinsl(a)yahoo.com> >>To: "Júlio" Dinis Silva <juliodinis(a)hotmail.com>, zope-dev(a)zope.org, >>zope(a)zope.org >>Subject: Re: [Zope] RAM Cache Manager "next_cleanup" not working? >>Date: Tue, 17 Jul 2001 14:29:40 -0700 (PDT) >> >>Hi, I'm having the same problem. >> >>I have two dtml methods cached via a RAM Cache Manager. Cleanup >>Interval is set to 1800 (30 minutes), but the methods never >>expire (unless I restart zope). >> >>I'm running Zope 2.3.2 binary release on linux. >> >>any ideas? >> >>thanks >> >>-Kevin >> >>--- Júlio Dinis Silva <juliodinis(a)hotmail.com> wrote: >> > Hi, >> > >> > I implemented a Ram Cache Manager. I cached >> > some methods and they really get cached, but the >> > cleanup_interval >> > is not working, i.e, if I define in my Ram Cache Manager >> > a cleanup interval of 5 seconds I will not see my method's >> > cache >> > being updated after that small amount of time. Only using the >> > invalidate button of my method's cache tab I'm able to cleanup >> > and soo refresh the method's cache. >> > >> > I've been looking into the code and there is something >> > weird with StandardCacheManagers.RAMCacheManager because >> > the ZCache_set which defines the next_cleanup time, is never >> > called unless at __init__ time. >> > >> > This cache properties are well embeded into OFS.DTMLMethod and >> > OFS.DTMLDocument and so my approach to the code will >> > take some more time, but a simple test with 232 and 233 dont >> > work. >> > >> > My simple test is: >> > >> > -create a RAMCacheManager, say "mycache" >> > -create a dtml method "test1" with the code <dtml-var >> > ZopeTime> >> > -create a dtml document "test2" with the code <dtml-var >> > ZopeTime> >> > -associate test1 and test2 with "mycache" >> > -define a cleanup interval of 5 seconds and a threshold >> > entries of 1 and >> > then call "test1" and "test2" several times until more than 5 >> > seconds had >> > passed. >> > >> > Isnt suppose to after 5 seconds I get a different value from >> > my method or document, in this case, a diferent zopetime? >> > >> > Is there anyone really using RAM Cache Manager with success, >> > i.e, >> > can you prove to me the cleanup_interval works? Or else there >> > must be >> > something really big I'm missing here. >> > >> > Meanwhile I'll look into the code. >> > >> > Best Regards, >> > Julio Dinis Silva >> > >> > >> > >> > >>_________________________________________________________________________ >> > Get Your Private, Free E-mail from MSN Hotmail at >> > http://www.hotmail.com. >> > >> > >> > _______________________________________________ >> > 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!? >>Get personalized email addresses from Yahoo! Mail >>http://personal.mail.yahoo.com/ > >_________________________________________________________________________ >Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. > > >_______________________________________________ >Zope-Dev maillist - Zope-Dev(a)zope.org >http://lists.zope.org/mailman/listinfo/zope-dev >** No cross posts or HTML encoding! ** >(Related lists - >http://lists.zope.org/mailman/listinfo/zope-announce >http://lists.zope.org/mailman/listinfo/zope ) _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.

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ZClasses adding misterious whitespaces to MethodManager
by Christian Theune 18 Jul '01

18 Jul '01

Hi again. Today i had following encounter with a ZClass: ---- snip --- <tr class="row-normal"> <td align="left" valign="top" width="16"> --------------------------------------------------------------v <input type="checkbox" name="ids:list" value="prepareData.py " /> </td> <td align="left" valign="top"> ---------------------------vvv <a href="prepareData.py%20/manage_workspace"> <img src="/misc_/ExternalMethod/extmethod.gif" alt="External Method" title="External Method" border="0" /></a> </td> <td align="left" valign="top"> <div class="list-item"> -------------------------vvv <a href="prepareData.py%20/manage_workspace"> prepareData.py </a> </div> </td> --- snap --- These whitespace just appeared ... they are not part of the dtmls in the ZClass directory nor part of the objectID. Also a change to "_['sequence-index'][:-1]" in the ZClass/dtml didn't help. In the View Tab of the ZClasses everything is displayed fine, and when i call 'prepareData.py/manage_workspace' manually everything works. I have the suspicion that the dtmls where copied into the ZODB, but I don't know anything about that. Is it probably a bug? -- Christian Theune - ct(a)gocept.com gocept gmbh & co.kg - schalaunische strasse 6 - 06366 koethen/anhalt tel.+49 3496 3099112 - fax.+49 3496 3099118 mob. - 0178 48 33 981 reduce(lambda x,y:x+y,map(lambda x:chr(ord(x)^42),tuple('zS^BED\nX_FOY\x0b')))

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dtml-sqltest has not been implemented completely
by Christian Theune 18 Jul '01

18 Jul '01

Hi all. As I posted on the zope(a)zope.org list, I found that the sqltest tag wasn't implemented as I expected from the DTML documentation. Following things were different: - support for expr="" was supposed to be there - the 'nb' type was expected to work I fixed both things and used sqlvar.py as a pattern to do so. I also updated some Exception handling and rewrote the thing in the style of sqlvar.py as it seems to be more up2date (sqlvar.py is from 2000/09/07, sqltest.py is from 2000/05/30). This was in Zope 2.3.3, but wasn't fixed until Zope 2.4.0b3 yet. I have a patch in this mail, and in the collector. If somebody at DC would be so kind to review this thing ASAP, because it really breaks me down to have such a big lack as I began using the sqltest currently. Regards PS: The Collector ID is #2415 -- Christian Theune - ct(a)gocept.com gocept gmbh & co.kg - schalaunische strasse 6 - 06366 koethen/anhalt tel.+49 3496 3099112 - fax.+49 3496 3099118 mob. - 0178 48 33 981 reduce(lambda x,y:x+y,map(lambda x:chr(ord(x)^42),tuple('zS^BED\nX_FOY\x0b')))

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Re: [Zope] RAM Cache Manager "next_cleanup" not working?
by J�lio Dinis Silva 18 Jul '01

18 Jul '01

Hi, >From Zope-2.3.1 CHANGES.txt: -Fixed two mistakes in the RAM cache cleanup code. Dont know if this was related, but I've tested the simple example on the email below with 230, 231, 232, 233 getting the same problem, i.e, cleanup after 5 seconds doesnt happens. Doing a search form "ram cache" in the collector I found: Zope Question: Cache Problem Submitted: 2001/06/28 * * * This item is under review * * * Anyone? Best Regards, Julio Dinis Silva >From: Kevin L <kevinsl(a)yahoo.com> >To: "Júlio" Dinis Silva <juliodinis(a)hotmail.com>, zope-dev(a)zope.org, >zope(a)zope.org >Subject: Re: [Zope] RAM Cache Manager "next_cleanup" not working? >Date: Tue, 17 Jul 2001 14:29:40 -0700 (PDT) > >Hi, I'm having the same problem. > >I have two dtml methods cached via a RAM Cache Manager. Cleanup >Interval is set to 1800 (30 minutes), but the methods never >expire (unless I restart zope). > >I'm running Zope 2.3.2 binary release on linux. > >any ideas? > >thanks > >-Kevin > >--- Júlio Dinis Silva <juliodinis(a)hotmail.com> wrote: > > Hi, > > > > I implemented a Ram Cache Manager. I cached > > some methods and they really get cached, but the > > cleanup_interval > > is not working, i.e, if I define in my Ram Cache Manager > > a cleanup interval of 5 seconds I will not see my method's > > cache > > being updated after that small amount of time. Only using the > > invalidate button of my method's cache tab I'm able to cleanup > > and soo refresh the method's cache. > > > > I've been looking into the code and there is something > > weird with StandardCacheManagers.RAMCacheManager because > > the ZCache_set which defines the next_cleanup time, is never > > called unless at __init__ time. > > > > This cache properties are well embeded into OFS.DTMLMethod and > > OFS.DTMLDocument and so my approach to the code will > > take some more time, but a simple test with 232 and 233 dont > > work. > > > > My simple test is: > > > > -create a RAMCacheManager, say "mycache" > > -create a dtml method "test1" with the code <dtml-var > > ZopeTime> > > -create a dtml document "test2" with the code <dtml-var > > ZopeTime> > > -associate test1 and test2 with "mycache" > > -define a cleanup interval of 5 seconds and a threshold > > entries of 1 and > > then call "test1" and "test2" several times until more than 5 > > seconds had > > passed. > > > > Isnt suppose to after 5 seconds I get a different value from > > my method or document, in this case, a diferent zopetime? > > > > Is there anyone really using RAM Cache Manager with success, > > i.e, > > can you prove to me the cleanup_interval works? Or else there > > must be > > something really big I'm missing here. > > > > Meanwhile I'll look into the code. > > > > Best Regards, > > Julio Dinis Silva > > > > > > > > >_________________________________________________________________________ > > Get Your Private, Free E-mail from MSN Hotmail at > > http://www.hotmail.com. > > > > > > _______________________________________________ > > 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!? >Get personalized email addresses from Yahoo! Mail >http://personal.mail.yahoo.com/ _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.

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patch zope-2.4.0 and guarded_getattr (and PageTemplates): is this a bug?
by Joseph Wayne Norton 18 Jul '01

18 Jul '01

Hello. I'm currently testing the following components together: - python 2.1.0 - zope 2.4.0 (CVS version) - PageTemplates and TAL 1.3.2 (CVS version) - CMF 1.1 (CVS version) I'm having trouble using the ZPT skins included with CMFDecor and my own customs skins. The following patch (below) fixes the troubles I'm facing. Is this patch correct or not? regards, - joe n. Index: lib/python/DocumentTemplate/DT_Util.py =================================================================== RCS file: /cvs-repository/Packages/DocumentTemplate/DT_Util.py,v retrieving revision 1.82 diff -r1.82 DT_Util.py 148c148 < get = md.guarded_getattr --- > get = getattr(md, 'guarded_getattr', None) 159c159 < get = md.guarded_getattr --- > get = getattr(md, 'guarded_getattr', None) Index: lib/python/DocumentTemplate/cDocumentTemplate.c =================================================================== RCS file: /cvs-repository/Packages/DocumentTemplate/cDocumentTemplate.c,v retrieving revision 1.39 diff -r1.39 cDocumentTemplate.c 130,134c130,139 < else < UNLESS(self->guarded_getattr=PyObject_GetAttr(self->namespace, < py_guarded_getattr)) < return NULL; < --- > else if (PyObject_HasAttr(self->namespace,py_guarded_getattr)) > { > UNLESS(self->guarded_getattr=PyObject_GetAttr(self->namespace, > py_guarded_getattr)) > return NULL; > } else > { > self->guarded_getattr = Py_None; > } > Index: lib/python/DocumentTemplate/pDocumentTemplate.py =================================================================== RCS file: /cvs-repository/Packages/DocumentTemplate/pDocumentTemplate.py,v retrieving revision 1.31 diff -r1.31 pDocumentTemplate.py 129c129 < self.guarded_getattr = namespace.guarded_getattr --- > self.guarded_getattr = getattr(namespace, 'guarded_getattr', None)

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DTML + TALES Project started
by Evan Simpson 17 Jul '01

17 Jul '01

The incorporation of TALES expressions into DTML is no longer a Proposal. It is now a Project, located at: http://dev.zope.org/Wikis/DevSite/Projects/DTMLplusTALES There is a draft of the documentation changes for the Zope Book in the Wiki, which should give a pretty good idea of the Project's effects. Cheers, Evan @ digicool

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RAM Cache Manager "next_cleanup" not working?
by J�lio Dinis Silva 17 Jul '01

17 Jul '01

Hi, I implemented a Ram Cache Manager. I cached some methods and they really get cached, but the cleanup_interval is not working, i.e, if I define in my Ram Cache Manager a cleanup interval of 5 seconds I will not see my method's cache being updated after that small amount of time. Only using the invalidate button of my method's cache tab I'm able to cleanup and soo refresh the method's cache. I've been looking into the code and there is something weird with StandardCacheManagers.RAMCacheManager because the ZCache_set which defines the next_cleanup time, is never called unless at __init__ time. This cache properties are well embeded into OFS.DTMLMethod and OFS.DTMLDocument and so my approach to the code will take some more time, but a simple test with 232 and 233 dont work. My simple test is: -create a RAMCacheManager, say "mycache" -create a dtml method "test1" with the code <dtml-var ZopeTime> -create a dtml document "test2" with the code <dtml-var ZopeTime> -associate test1 and test2 with "mycache" -define a cleanup interval of 5 seconds and a threshold entries of 1 and then call "test1" and "test2" several times until more than 5 seconds had passed. Isnt suppose to after 5 seconds I get a different value from my method or document, in this case, a diferent zopetime? Is there anyone really using RAM Cache Manager with success, i.e, can you prove to me the cleanup_interval works? Or else there must be something really big I'm missing here. Meanwhile I'll look into the code. Best Regards, Julio Dinis Silva _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.

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Cachable Zclass instance methods?
by Brad Clements 17 Jul '01

17 Jul '01

There doesn't seem to be any way to cache member functions (methods) of a zclass instance. I have a use case where the method is really a class method and returns the same result for all instances of the class. I'd like to cache it's output. The only way I could do this was to move the method out of the zclass and into a higher folder. Any idea how to add this functionality (cached class method)? 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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The difference between product Properties and Attributes?
by Richard Ettema 17 Jul '01

17 Jul '01

Hi, I have been looking through the Zope Developers Guide (PollProduct Example) and also How-To's to help with creating a Product. I am a bit confused whether there is any difference between properties in Zope and attributes you create in a Product. I have seen 2 different ways to access attributes created in a product: The first is by using _properties and specifying your attribute name/type so you can view/edit them on the properties page. The other is to create a dtml page specifically to view/edit the attributes you have by calling methods from your product to retrieve/save them. Do these 2 ways store/retrieve the attributes in Zope in different ways? Is one approach better than the other? Also... I am creating an object based on the Folder object. I only want to allow certain objects to be created inside this folder'ish object. Can the objects available in the drop-down be restricted like you can when creating ZClasses inside Zope? Thanks for your help. Richard

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Collector bug 2410
by Andy McKay 16 Jul '01

16 Jul '01

Patch for http://classic.zope.org:8080/Collector/2410/view figured out the solution after sending in the bug. Zope 2.4 b3. --- d:\Zope-2.4.0b3-src\lib\python\Shared\DC\ZRDB\Aqueduct.py Wed May 16 15:13 :00 2001 +++ d:\Zope24\lib\python\Shared\DC\ZRDB\Aqueduct.py Mon Jul 16 16:37:13 2001 @@ -365,9 +365,9 @@ else: mo = qparmre.match(text) if mo: - name=mo.group(1) + name=mo.group(2) value={'default':mo.group(3)} - l=len(mo.group(2)) + l=len(mo.group(1)) else: mo = unparmre.match(text) if mo: Cheers. -- Andy McKay.

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