June 2000 - Zope - Zope lists

Re: [Zope] Problem with > 1 ZCatalog search on same page
by Dieter Maurer 28 Jun '00

28 Jun '00

Jeff Sasmor writes: > I have two ZCatalog searches on the same page (in the same DTML method). Each > has different fields so they have different numbers of results displayed in two tables. > > This works just fine. > > What's wierd is that the 'batch_size' code interacts between the two .... You must understand, how batching works: "sequence-query" is the query string with any "query_start" parameter removed. A "dtml-in" uses the "query_start" parameter to decide where to start displaying the sequence (if not told otherwise with a "start=" argument. If you have several "dtml-in" on the same page, you need several start parameters, one for each "dtml-in". You can use the "dtml-in" argument "start" to tell it which variable should be used. The only remaining thing is to get a query string from QUERY_STRING that no longer contains unwanted "start=..." Elements. That is a task for a small external method. Dieter

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Re: [Zope] ZODB or not ZODB?
by Dieter Maurer 28 Jun '00

28 Jun '00

Jim Fulton writes: > In theory, you could use ZCatalog to catalog objects in the > file system or in a RDBMS, providing that you can provide > paths for them. I don't think anyone's done this yet. There > are bound to be bumps from wjoever does it first. :) I use ZCatalog to catalog objects in the file system included into the Zope world via LocalFS. Minor patch to LocalFS needed. Everything works with the exception of proximity searches. Dieter

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LocalFS and Cache Issues
by Rogerio Atem de Carvalho 28 Jun '00

28 Jun '00

I am using a combination of Zope to create and maintain a MySQL database. This database is full of images files so I decided to keep them outside MySQL for caching facilities. My question are: 1)image files referenced by LocalFS objects are cached by Zope? and 2)In this situation do I need to use Apache or only Zope+MySQL? regards, Rogerio Atem ------------------------------------------- E-mail enviado pelo servidor do CEFETCampos

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RE: [Zope] ProxyPass Problems
by Baker, Dennis [sjmr] 28 Jun '00

28 Jun '00

The idea was to have http://mysite.org go to one part of my site, and https://mysite.org go to a different section of my page. When you request a page using http:// the request comes in on port 80 is non-encrypted html. https:// requests go to port 443, and are encrypted. So the idea is to have Apache ProxyPass the secure pages (Port 443) to the Secured pages. All better now... I didn't pay attention to the existing VirtualHosts in httpd.conf and paid for it. > -----Original Message----- > From: Peter Sabaini [mailto:sabaini@niil.at] > Sent: Tuesday, June 27, 2000 6:12 AM > To: Baker, Dennis [sjmr] > Cc: 'zope(a)zope.org' > Subject: Re: [Zope] ProxyPass Problems > > > > i dont know much about ssl but wouldn't you want to pass / --> > https:// instead of / --> http:// ? > but then again i dont know a thing about ssl... > peter > > > On Mon, 26 Jun 2000, Baker, Dennis [sjmr] wrote: > > :I'm having a problem with getting ProxyPass and SSL to work. > I followed the > :How-to on Using Apache with ZServer, and unfo's How-To on > :Apache+ZServer+SSL. And my setup is nearly identical to the > one listed on > :the howto. I have my main site in the root of my Zope > Setup, and My SSL > :site is in a subdirectory of the root called SecureSite. > : > :After setting up the ProxyPass Directives in Apache (I have > the httpd.conf > :section attached below) and Adding the SiteRoot objects on > Zope I can access > :the main Site at http://mysite.org, but if I try to access > :https://mysite.org my web browser hangs until it times out. > Also, it > :becomes impossible to browse the SecureSite Folder unless I > delete the > :SiteRoot Object. > : > :It appears to be some kind of Apache issue, however I can't > figure out why > :it won't connect, the directives are almost identical to > the ones on the > :Howto. Any Suggestions ?? > : > :---- Snippet from httpd.conf ------- > :NameVirtualHost 206.171.167.101:80 > : > :<VirtualHost 206.171.167.101:80> > : ServerAdmin dbaker(a)chw.edu > : ServerName mysite.org > : ProxyPass / http://mysite.org:8080/ > : ProxyPassReverse / http://mysite.org:8080/ > : ProxyPass /misc_ http://mysite.org:8080/misc_ > : ProxyPass /p_ http://mysite.org:8080/p_ > :</VirtualHost> > : > :NameVirtualHost 206.171.167.101:443 > : > :<VirtualHost 206.171.167.101:443> > : ServerAdmin dbaker(a)chw.edu > : ServerName mysite.org > : ProxyPass / http://mysite.org:8080/SecureSite/ > : ProxyPassReverse / http://mysite.org:8080/SecureSite/ > : ProxyPass /misc_ http://mysite.org:8080/misc_ > : ProxyPass /p_ http://mysite.org:8080/p_ > :</VirtualHost> > : > :---- End Snippet ---- > : > :Dennis Baker > :Information Systems Manager, St. Joseph's Medical Resources > : > : > :_______________________________________________ > :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 ) > : > > -- > > _________________________________________________ > peter sabaini, mailto: sabaini(a)niil.at > ------------------------------------------------- > > > _______________________________________________ > 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 ) > >

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Re: [Zope] DTML question
by Dieter Maurer 28 Jun '00

28 Jun '00

Rik Hoekstra writes: > > > Luke Tymowski wrote: > > > > Hello, > > > > I want to retrieve the last 3 filenames from a subfolder and display them in > > a document. If I set the size of the retrieval to 1, I get just 1 name > > returned. If I set the size to 3, I get everything in the folder. (if I use > > 2 I also get everything in the subfolder ) > > > > Here is my code (using 2.2b2): > > > > <dtml-with Document> > > <dtml-in "objectValues(['DTML Document'])" size=3 sort=id> > > <dtml-var id> <dtml-var title><br> > > </dtml-in> > > </dtml-with> > > > > You could try (untested): > > <dtml-with Document> > <dtml-in "objectValues(['DTML Document'])[-3:]" sort=id> > <dtml-var id> <dtml-var title><br> > </dtml-in> > </dtml-with> This will first select 3 elements and only then sort. Maybe not, what on wants. <dtml-in "Document.objectValues(['DTML Document'])" sort=id reverse size=3 orphan=0> may do the trick. Dieter

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Re: [Zope] how to get email delivery errors
by Dieter Maurer 28 Jun '00

28 Jun '00

Ben Leslie writes: > On Tue, 27 Jun 2000, Dan Rusch wrote: > > > Our site allows supervisors to email orders back to sales reps. We have > > this working very well. The problem is if the supervisor types in an > > non-existant email address we aren't getting Mail System Error - > > Returned Mail messages like you would from other email apps such as > > Netscape Messenger. Does anyone know how to accomplish this. > > > > Thanks, > > DR > > > AFAIK Returned Mail messages are generated by the SMTP server, not by the > email client application. I do not think so. If an SMTP server detects a problem, it rejects the SMTP request. If the requester is an SMTP server, it sends an error message back. If the requester is something different, e.g. a Zope sendmail tag, it must do something about the problem -- e.g. raise an exception. Dieter

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Re: [Zope] Data.fs.lock?
by addyd＠unk.edu 28 Jun '00

28 Jun '00

Well, it's NOT a production environment at this point. I just thought I'd see if I could play with it until my LinuxPPC 2000 CDs arrived and I could put it on a Mac where it BELONGS. :>) I'm looking forward to attempting some benchmarking of Zope on a 533mhz Pentium III vs a Mac 200mhz PPC 604e. Darren Addy Internet Specialist University of Nebraska at Kearney PS...they MADE me get a IIS server for a proprietary (Follett Software) package that one of our offices needed. I'm just trying to figure out something else to use it for. That Dell Poweredge is taking up a lot of rack space for the 10 hits per day the Folletts app is gonna get: http://nvcrc.unk.edu :>) Chris Withers <chrisw@niplt To: tdickenson(a)geminidataloggers.com d.com> cc: addyd(a)unk.edu, zope(a)zope.org Subject: Re: [Zope] Data.fs.lock? 06/28/00 06:03 AM But then, I'd say it's a problem running (Zope on) Windows in a production environment ;-)

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Adding the objects resulting from a ZSQL query to a Zope folder
by Ivan Raikov 28 Jun '00

28 Jun '00

Hello, everybody, Is there any way to programmatically add the objects, returned from a ZSQL method to a Zope Folder? Thanks, Ivan Raikov

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Re: [Zope] Re: Slow File Access With LocalFS
by Dieter Maurer 28 Jun '00

28 Jun '00

Jonothan Farr writes: > It sounds to me like the Apache server is just writing the data directly to the > HTTP connection as it is read. I believe that's how HTTP "streaming" works. I > also believe this is possible to do using the Zope HTTPResponse object. Does > anyone have any ideas? We use it to deliver images from a multimedia database. In Zope 2.1.0, it was not at all easy to use the HTTP streaming. Many proxies and IE require the Content-Length header to be correct. To set a correct "Content-Length" was not a problem. However, ZPublisher.HTTPResponse reset it afterwards to 0, leading to very strange effects in various situations (i.e. with IE and some Proxies). We finally settled it in the following way: RESPONSE.setHeader('Content-Length',length) RESPONSE.setHeader('transfer-encoding','binary') # to prevent RESPONSE.__str__ to overwrite "Content-Length" RESPONSE.headers['Content-Length']= length # now do several "RESPONSE.write" I am not sure, whether 2.1.6 or 2.2 still requires this strange code sequence. For Zope 2.1.6, we detected a nasty ZServer bug with the streaming protocol: missing thread synchronization. As a result, browsers got a non-deterministic part of the image. Very nice effects.... DC told me, that this bug is fixed in the CVS and for Zope 2.2. Thus, do not use the HTTP streaming protocol for the standard Zope 2.1.6 distribution (or be ready to patch ZServer). Dieter

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ZODB or not ZODB?
by Casey Duncan 28 Jun '00

28 Jun '00

I am implementing a document Library using Zope. It has an exhaustive index with several thousand topics in an outline residing on a PostgreSQL database. This works well and I like it. My question is where is the best place to store the documents themselves? They will be static HTML documents ranging from 1-50Kb in size roughly. There will probably be at least 10,000-15,000 of these documents in the library once all is said and done. In my mind I have three options: 1. Store them on the filesystem. 2. Store them in a PgSQL table as blobs. 3. Store them as DTML Docs in the ZODB. I would like to eventually have full text searching capabilities, so that makes #1 less attractive (I would likely need my own Python method to do it). #2 is somewhat of a pain to implement due to limitations in the PgSQL row size and text searching would be slow. With #3 I could in theory use a ZCatalog to implement the searching, so that is done for me. Is ZODB up to the task of storing this quantity of objects? What problems might I run into? Is it a wise idea, could a data.fs file of this size (~3-400MB) become too easily corrupted? Should I use a separate data.fs file just to store the documents (ie using mountedFileStorage)? Or is it better to use method #1 or #2? Information from anyone with experience in this regard is greatly appreciated. -Casey Duncan caseman(a)mad.scientist.com

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