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From: zope-request@zope.org
Subject: Zope digest, Vol 1 #1487 - 8 msgs
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Today's Topics:
1. Re: A tale of two systems.... (Thomas B. Passin)
2. select_question (Kathrin Deubrecht)
3. Twin Cities (MN, USA) Zope User Group (Michael Fraase)
4. Re: [Zope-dev] Zcatalog bloat problem (berkeleydb is a solution?) (abel deuring)
5. Re: 2.4 beta1 on win2k doesnt run?? (Andy McKay)
6. Re: Restrict object list in folderish product, it works, but how? (Joachim Werner)
7. Re: A tale of two systems.... (Chris Beaumont)
8. File locking. (=?iso-8859-1?q?J=F8rgen=20Hermanrud=20Fjeld?=)
--__--__--
Message: 1
From: "Thomas B. Passin" <tpassin@mitretek.org>
To: <zope@zope.org>
Subject: Re: [Zope] A tale of two systems....
Date: Mon, 25 Jun 2001 11:05:53 -0400
[Michael Sullivan]
>
> Is there an up-to-date, cogent, step by step
> information on hooking
> up a MySQL database to Zope in Windows?
>
Not quite what you asked for, but get the mySQL ODBC driver working, then
you don't have to do anything specific about mySQL within Zope, just us a
Zope ODBC data source and you'll be all set.
I use ODBC to get Zope talking to SQLAnywhere, Access, Interbase, and
(previously) mySQL. The only hitch I've had is that sometimes you have to
set up the connect string manually and sometimes the one in the ODBC setup
works, so just experiment. Otherwise, it works well.
Cheers,
Tom P
--__--__--
Message: 2
Date: Mon, 25 Jun 2001 17:12:05 +0200 (MET DST)
From: Kathrin Deubrecht <kathrin@iei.tu-clausthal.de>
Reply-To: Kathrin Deubrecht <kathrin@iei.tu-clausthal.de>
To: zope@zope.org
Subject: [Zope] select_question
Hello ,
I have a folder 'project' with some subfolders (the projects). The subfolders
have different properties.
Now I created a form in which I can include new properties for a new subfolder.
A DTML-method called 'project_prozessor' adds this new subfolder with its new
properties to folder 'project'.
Now my problem :
I want to create a selection list with all my subfolders from folder 'project'
and when I click on a subfolder, the properties which belong to my selected
folder should be in the parts of the form , now.
How can I generate my side with the form new?
I don't know how can I realize it? I only want to do this with DTML-Syntax not
with properties.sheets or so.
I would be very happy about your answer.
best regards
kathrin
--__--__--
Message: 3
Reply-To: <mfraase@farces.com>
From: "Michael Fraase" <mfraase@farces.com>
To: <zope@zope.org>
Date: Mon, 25 Jun 2001 10:17:01 -0500
Organization: ARTS & FARCES LLC
Subject: [Zope] Twin Cities (MN, USA) Zope User Group
Any interest in forming a Twin Cities (Minneapolis, Saint Paul) Zope
User Group? If so, please contact me directly.
Thanks kindly.
--
Michael Fraase
ARTS & FARCES LLC
mfraase@farces.com
www.farces.com
PGP Fingerprint:
3D85 F3F4 9E65 4949 176A 260C CB47 190D C864 9A96
--__--__--
Message: 4
Date: Mon, 25 Jun 2001 17:49:02 +0200
From: abel deuring <adeuring@gmx.net>
Reply-To: a.deuring@satzbau-gmbh.de
To: Giovanni Maruzzelli <maruzz@open4.it>
CC: zope@zope.org, zope-dev@zope.org, erik@thingamy.net,
barry@digicool.com, chrism@digicool.com
Subject: [Zope] Re: [Zope-dev] Zcatalog bloat problem (berkeleydb is a solution?)
Giovanni Maruzzelli wrote:
> =
> Hello Zopistas,
> =
> we are developing a Zope 2.3.3 (py 1.5.2) application that will add, in=
dex
> and reindex some tens of thousands
> objects (Zclass that are DTMLDocument on steroids) on some twenty prope=
rties
> each day, while
> the absolute number of objects cataloged keeps growing (think at conten=
t
> management for a big
> portal, where each day lots of content are added and modified and all t=
he
> old content remains as a
> searchable archive and as material to recycle in the future).
> =
> This seems for some aspects a task similar to what Erik Enge impacted c=
ouple
> a weeks ago.
> =
> We first derived from CatalogAware, then switched to manage ourselves t=
he
> cataloging - uncataloging - recataloging.
> =
> The ZODB still bloat at a too much fast pace.
> =
> ***Maybe there's something obvious we missed***, but when you have some=
> 4thousands object in the catalog, if you add and catalog one more objec=
t
> the ZODB grows circa a couple of megabyte (while the object is some 1 k=
of
> text, and some twelve boolean and datetime and strings properties). If =
we
> pack the ZODB, Data.fs returns to an almost normal size (so the bloat a=
re
> made by the transactions as tranalyzer.py confirms).
> =
> Any hints on how to manage something like?
> We use both textindexes, fieldindexes, and keywordsindexes (textindex o=
n
> string properties, fieldindexes on boolean and datetime, keywordindex o=
n
> strings). Maybe one kind of indexes is to be avoided?
> =
> Erik, any toughts?
> =
> We are almost decided to switch to berkeleydb storage (the Minimal one)=
to
> get rid of the bloating, we are testing with it, but it seems to be
> discontinued because of a lack of requests.
> =
> Any light on it? Is it production grade?
Giovanni,
I experienced similar problems trying to catalog =B7~200000 objects with
~500 MB text. Using CatalogAware objects will indeed lead to a "really
fat" data base, and using the "find objects" for a ZCatalog requires
considerable resources.
A text index (more precise: the class UnTextIndex) works, as far as I
understood it, this way:
1. The method UnTextIndex.index_object splits the text into single
words, using the method [Globbing]Lexicon.Splitter. =
2. UnTextIndex.index_object looks up the wordID (an integer) of each
word in the lexicon. If a word is not yet listed in the lexicon, it is
added to the lexicon. =
3. All wordIDs are inserted into self._index, which maps wordIDs to the
list of documents containing this word.
4. The "unindex" BTree , which maps the documentIds to the the list of
all words appearing in an document is updated.
If you are adding only one CatalogAware object during a transaction,
this is quite expensive: Even if the indexed object contains only one
new word, the entire lexicon needs to be updated. In my tests with the
200000 objects (containing ordinary German texts) the lexicon contained
~ 1 million words. (BTW, I had not had a very close look into the
contents of the lexicon, so I don't know yet exactly, why it is so
large. But I noticed quite many entries like "38-j=E4hrige", "42-j=E4hrig=
e"
("NN-year-old") entries. So a configurable splitter method might help
quite much to reduce the size of the lexicon.) Hence, the above
mentioned step 2 alone can result in a really bloated data base.
A solution might be a kind of "lazy catalog awareness": Instead of
mangling a new object through one or more catalogs when it is created,
this object could be added to a list of objects to be cataloged later.
This way, the transaction to insert a new object would become much
"cheaper". I'm working on this, but right now it is quite messy. (I'm
new to Python and Zope, and hence I'm stumbling over a few, hmmm,
trip-wires...)
But even using such a "lazy catalog awareness", you might get into
trouble. Using the ZCatalog's "find objects" function, I hit the limits
of my Linux box: 640 MB RAM were not enough...
As I see it, the main problem is that UnTextIndex.index_object tries to
do all work at once: Updating the lexicon _and_ self._index _and_
self._unindex
So I tried to separate these tasks by writing the data to be stored in
self._index (wordId, documentId, score) into a pipe. This pipe is
connected to sort(1). After all objects have been "scanned", the pipe is
closed, the sorted results are read back and self._index is updated.
This way, Zope needed "only", uuhh, somewhat aroud 200 or 300 MB RAM.
A few weeks ago, I've posted this (admittedly not fully cooked) patch to
this list, but did not get yet any response.
Abel
--__--__--
Message: 5
From: "Andy McKay" <andym@ActiveState.com>
To: "bdorn@vup.at" <bdorn@mopa.at>, "Phil Harris" <phil.harris@zope.co.uk>,
<zope@zope.org>
Subject: Re: [Zope] 2.4 beta1 on win2k doesnt run??
Date: Sat, 25 Aug 2001 08:36:51 -0700
Works fine for me too. We do get an intermittent problem with Zope 2.3.x not
starting on windows though, sometimes after retrying it a few times, it
works fine. Still havent had the time to investigate it much though...
--
Andy McKay
----- Original Message -----
From: "bdorn@vup.at" <bdorn@mopa.at>
To: "Phil Harris" <phil.harris@zope.co.uk>; <zope@zope.org>
Sent: Monday, June 25, 2001 3:12 AM
Subject: Re: [Zope] 2.4 beta1 on win2k doesnt run??
> it's already running form cmd
> debugging is enabled (-D)
> it's running at 8080
> i haven't changed the bat so its default port is used - i think
>
> the win2k box is my development box and i run four different zopes (not at
> the same time)
> but they all work - only this new release doesn't
>
> it seems that it really doesn't do anything, because there is completely
no
> output
>
> ????
>
> thx bernd
>
>
> ----- Original Message -----
> From: "Phil Harris" <phil.harris@zope.co.uk>
> To: "bdorn@vup.at" <bdorn@mopa.at>; <zope@zope.org>
> Sent: Monday, June 25, 2001 12:06 PM
> Subject: Re: [Zope] 2.4 beta1 on win2k doesnt run??
>
>
> > Works fine for me on w2k advanced server sp2.
> >
> > Have you checked the port it's running on? Have you got anything else on
> > that port?
> >
> > Try running the start.bat file from a command prompt, in debug mode you
> > should get some error message.
> >
> > hth
> >
> > Phil
> > ----- Original Message -----
> > From: bdorn@vup.at
> > To: zope@zope.org
> > Sent: Monday, June 25, 2001 10:57 AM
> > Subject: [Zope] 2.4 beta1 on win2k doesnt run??
> >
> >
> > does anybody know this problem ...
> >
> > I installed Zope 2.4 b1 this morning on a win2k server
> >
> > its running manually ( it should) - not as a service
> >
> > but when I start z2.py it exits without any message immediately
> >
> > thanks in advance, bernd
> >
>
> _______________________________________________
> Zope maillist - Zope@zope.org
> http://lists.zope.org/mailman/listinfo/zope
> ** No cross posts or HTML encoding! **
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>
--__--__--
Message: 6
From: "Joachim Werner" <joe@iuveno-net.de>
To: =?iso-8859-1?Q?Max_M=F8ller_Rasmussen?= <maxm@normik.dk>,
"'Rene Pijlman'" <rpijlman@wanadoo.nl>, <zope@zope.org>
Subject: Re: [Zope] Restrict object list in folderish product, it works, but how?
Date: Mon, 25 Jun 2001 17:57:10 +0200
Organization: iuveno AG
Stephan Richter's "OrderedFolder"
(http://www.zope.org/Members/srichter/Products/OrderedFolder) has two new
features now:
- There is a "Subobjects" tab like in ZClasses (That's what you seem to be
looking for)
- You can switch on/off "Transparency" if you have installed Shane's
TransparentFolder
So the name of the thing should probably be "ConfigurableFolder" or so. If
you think this thing could make your life easier, we can publish the new
version as a standalone product. It was meant to be published with the next
version of Kontentor.
Just tell us what you think ...
Joachim
--__--__--
Message: 7
Date: Mon, 25 Jun 2001 08:54:02 -0700
To: "Thomas B. Passin" <tpassin@mitretek.org>
From: Chris Beaumont <cbeaumon@msri.org>
Subject: Re: [Zope] A tale of two systems....
Cc: zope@zope.org
But this only works if you are hosting Zope on Windows, right?
From what I understand, there is no ODBC adaptor for any of the *nix
platforms..
Mybe somebody here knows.. What is the best way of getting access to
a ODBC datasource from a Zope instance hosted on Linux?
Is there a (perhaps third party) ODBC driver that runs on Linux that
is cross-compatible?
-Chris
>[Michael Sullivan]
>
>>
>> Is there an up-to-date, cogent, step by step
>> information on hooking
>> up a MySQL database to Zope in Windows?
>>
> Not quite what you asked for, but get the mySQL ODBC driver working, then
>you don't have to do anything specific about mySQL within Zope, just us a
>Zope ODBC data source and you'll be all set.
>
>I use ODBC to get Zope talking to SQLAnywhere, Access, Interbase, and
>(previously) mySQL. The only hitch I've had is that sometimes you have to
>set up the connect string manually and sometimes the one in the ODBC setup
>works, so just experiment. Otherwise, it works well.
>
>Cheers,
>
>Tom P
--__--__--
Message: 8
From: =?iso-8859-1?q?J=F8rgen=20Hermanrud=20Fjeld?= <jhf@hex.no>
Organization: Fjeld Kurs og Konsulenttjenester
To: zope@zope.org
Date: Mon, 25 Jun 2001 17:57:15 +0200
Subject: [Zope] File locking.
Hi.
Is there a way to support file locking?
It seems it is supported through WebDAV, although I haven't tried.
But how doe's one do this with the management interface?
The goal is to prevent several people from changing the same document at =
the=20
same time.
--=20
MVH
J=F8rgen H. Fjeld
--__--__--
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