Archive for June, 2005

Reinout van Rees is just doing an amazing job in his blog for EP feedback
http://vanrees.org/weblog/

(Post originally written by Tarek Ziadé on the old Nuxeo blogs.)

I have been at Michael Salib’s talk about Xapian, “Stupidity and laser cat toys: Indexing the US Patent Database with Xapian and Twisted”

Xapian is a probabilistic text search engine.

Michael used to index the US Patent Database, wich is pretty big indeed.He wrote a python wrapper called Xapwrap, that you can get here:

http://divmod.org/projects/xapwrap

Michael explained that Xapian was prefered to Lucene because It easier to wrap into Python and provided faster queries and a better precision.

I’m waiting for Michael to upload the slides on the EP sites to give more precise feedback on this.

More info on PyLucene here:
http://www.sauria.com/~twl/conferences/pycon2005/20050325/Pulling Java Lucene into Python.html(PyCon05 notes)

feature-wise, Xapian has eveything needed to run a scalabale text engine.(stemming based on snowball, meta-indexes, etc..) It optionnally uses twisted’s python.log for logging.

• Lucene features: http://lucene.apache.org/java/docs/features.html
• Xapian features: http://www.xapian.org/features.php

I have the feeling that Xapian would fit pretty well as an … Read more

I’m writing a little blog entry atthe end of conference day 1.
A lot of things hapenned already. I could not see all the conference I
wanted of course.

About us:

Stéfane
presented CPS on a one hour track, trying to show all cool aspect of
CPS. Julien tallked on a 30 minutes track about workflows and Florent about
his thaught on the future relation/repository tool in Zope 3, based on
Zemantic.
Slides are available now.

For myself I did a presentation about CPSMailAccess, the CPS webmail. I was
pretty happy about the audience reaction, as they found it very usable and
ergonomic. Some zope developers told me they will going to try it in other
CMS environments (Plone, etc..) …cool

The work we did wih Godefroid during the Sprint on “azax” will surely be
reused later in the webmail.

At the end of the day, we went to … Read more

I have uploaded my slides from yesterday’s EP2005 presentation, you can grab
it here:

http://www.cps-project.org/sections/news/ep_2005_cpsmailaccess

It presents the webmail system framework and how it scales for wide
intranets, using stuff like a stateful connector pool.

(Post originally written by Tarek Ziadé on the old Nuxeo blogs.)

python-mode package includes a doctest mode that rocks :

http://cvs.sourceforge.net/viewcvs.py/python-mode/python-mode/doctest-mode.el

Sweeeeeeeet……..

(Post originally written by Julien Anguenot on the old Nuxeo blogs.)

The EP sprint is going on in here in Göteborg. I'm working on the workflow
component.

Today, I updated the document I wrote 2 days ago about the architecture
overview. You can find it there :

http://www.z3lab.org/sections/front-page/white-papers/xpdlcore-zope-wfmc

This is a draft and this is, of course, not in any way the
definitive architecture… The idea in here is to put on a paper the ideas
and the workflow related stuffs I've been thinking on for couple of time and
based on my previous experience on CPSWorkflow.
BTW, Anahide wrote a really nice howto document and product to explain the
CPSWorkflow in
french and
english

If you are interested in workflow and ECM I would be please to get feedbacks
on this first draft on the Zope3 / ECM architecture.

I'm currently binding zope.wfmc on xpdlcore
as xpdl importer. It will be the first step to have the 3 components … Read more

Yesterday has started Zope 3 sprint in Chalmers before Europython.

Among listed subjects people were interested into:

+ repository
+ tools for document type creation, schemas and layout
+ Xicken in Five
+ Workflow
+ Relations
+ Implement a macro portlet
+ Creating an AJAX infrastructure
+ XForms

The day was a dicussion on all this subjects and some demos. Among other
demos, Paul Everitt showed us what he has done using AJAX to create a page
based on XForms that interacts with preloaded client side datas.

I am highly interested in this subject but I do need to learn more about
XForms before I can help on the topic.

After that Godefroid Chapelle and I discussed how could we bring  AJAX
into Zope, like Ruby on Rails did, to let the developers use its principles
without having to write javascripts.

We have started to list use cases of interest … Read more

Great news : Zope-3.1 went beta during the week-end !

Stephan released it yesterday :
http://www.zope.org/Products/Zope3/3.1.0b1/Zope310b1Released

Notice that the ‘X’ has been droped. Check the annoucement it’s explained
within. Basically, we think Zope3 is now more than ready for production use
and the compatibility issues with Zope2 will continue to be investigated
through the Five component
(which is now shipped with Zope-2.8 since the
Paris sprint 2005)

I’m pretty happy about it and looking forward to the 3.1 final on my side
cause :

1. lxml support on Zope-3.2
   arriving.
2. inclusion of xplcore
   and an integration with zope.wfmc.
   

This is part of my work in the scope of the Zope3 / ECM workflow project (ecmworkflow)

I will be annoucing the EP workflow
sprint topics that will include basically :

1. Work on xpdlcore : continue the prototype and integrate it with
   zope.wfmc.
2. Architecture review and coding on ecmworkflow

Zope3 … Read more

Woke up this morning, can’t believe what I saw: CPSWorkflow documentation
was out !

You can find it at the following URL:

http://www.cps-project.org/sections/documentation/developers/cpsworkflow/switchLanguage/en

A Zope product comes with this documentation, as it is constructed as a
tutorial.

I hope the document construction makes it easy to understand how CPS
workflows work, and how powerful they can be.
The sample workflow is quite simple because I did not want to present a
complicated example.

Hope you’ll enjoy, any kind of feedback is very welcome.

Background

CPSMailAccess let the user configure the SMTP server he or she wants to use.
It can be the same SMTP server for all users, or a different one for each
user. Having multiple configuration can sound overkill, but since the
application let you browse any mailbox, you might need to associate a
different SMTP server to each MailBox

What Zope 3 provides

Zope 3 introduces a pretty cool mechanism: a delivery queue that writes
mails into a filesystem dir (a MailDir in fact) and let a thread send them
asynchronously.

This is rock-solid, since :

• the work can restart even if Zope hangs: no send will be lost
• the user does not wait

that’s exactly what’s needeed for large scale intranets. The pattern used
is:

• MailWriter: writes mails into the folder
• MailReader: thread, sends mails found into the folder
• MailSender: interface,provide a send method that calls MailWriter, and
  creates

… Read more