Nabble - Zope

Re: [Python-Dev] Unittest/doctest formatting differences in 2.7a1?

2009-12-11T19:36:45Z

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Lennart Regebro wrote:

> On Fri, Dec 11, 2009 at 21:36, <exarkun@...> wrote:
>> Certainly. Perhaps Zope would like to add something to the community
>> builders page.
>
> The Zope Component Architecture would be nice to test like that. Much
> of the rest of Zope needs massaging between python versions, so that
> may not be useful.
>
> http://www.python.org/dev/buildbot/community/trunk/
>
> So anyone who cares to can check to see if their changes have broken
> things right away, instead of only finding out 6 or 12 or 18 months
> later. :)
>
> Cc:ing zope-dev for opinions.

+1 in general to the idea: we should be able to put together a
"buildcompat"-style buildout which would be autoamatable under buildbot.

Tres.
- --
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Palladion Software "Excellence by Design" http://palladion.com
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From forum: Zope - Dev

Re: [Python-Dev] Unittest/doctest formatting differences in 2.7a1?

2009-12-11T12:51:12Z

On Fri, Dec 11, 2009 at 21:36, <exarkun@...> wrote:
> Certainly. Perhaps Zope would like to add something to the community
> builders page.

The Zope Component Architecture would be nice to test like that. Much
of the rest of Zope needs massaging between python versions, so that
may not be useful.

http://www.python.org/dev/buildbot/community/trunk/

So anyone who cares to can check to see if their changes have broken
things right away, instead of only finding out 6 or 12 or 18 months
later. :)

Cc:ing zope-dev for opinions.

--
Lennart Regebro: Python, Zope, Plone, Grok
http://regebro.wordpress.com/
+33 661 58 14 64
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From forum: Zope - Dev

[plone X exo]

2009-12-11T10:14:44Z

Galera,

Fiquei sabendo que o pessoal da caixa, por determinação da Matriz, terão que
desenvolver os novos projetos de portais em exo e não mais em plone.

Esta informação veio de um colega que foi transferido da caixa para o
ministério através da empresa DBA (que por sinal todo mês atrasa os
salários, 13º e etc de seus funcionários).

Segundo o Bruno (ex-caixa) eles fizeram um relatório de avaliação dessa nova
plataforma, mesmo com este relatório não recomendando essa plataforma, a
Matriz determinou que será o exo e ponto final. (politicamente decidido).

Não conhecia esse tal de exo, acabei achando este link:
http://www.exoplatform.com/portal/public/website/

Agora, alguém saberia responder com mais firmeza?

Tudo pode ser balela? Conversa fiada? Não passa de boato? Intriga da
oposição?

Abraço a todos.

--
Alexandre das Chagas Souza
WebDesigner / Desenvolvedor PZP
http://www.alexandrechagas.com.br
(61) 8119-5180

From forum: Zope & Plone - Portugal/Brazil

Zope Tests: 6 OK

2009-12-11T03:59:32Z

Summary of messages to the zope-tests list.
Period Thu Dec 10 12:00:00 2009 UTC to Fri Dec 11 12:00:00 2009 UTC.
There were 6 messages: 6 from Zope Tests.

Tests passed OK
---------------

Subject: OK : Zope-2.10 Python-2.4.6 : Linux
From: Zope Tests
Date: Thu Dec 10 20:38:25 EST 2009
URL: http://mail.zope.org/pipermail/zope-tests/2009-December/013173.html

Subject: OK : Zope-2.11 Python-2.4.6 : Linux
From: Zope Tests
Date: Thu Dec 10 20:40:25 EST 2009
URL: http://mail.zope.org/pipermail/zope-tests/2009-December/013174.html

Subject: OK : Zope-2.12 Python-2.6.4 : Linux
From: Zope Tests
Date: Thu Dec 10 20:42:25 EST 2009
URL: http://mail.zope.org/pipermail/zope-tests/2009-December/013175.html

Subject: OK : Zope-2.12-alltests Python-2.6.4 : Linux
From: Zope Tests
Date: Thu Dec 10 20:44:25 EST 2009
URL: http://mail.zope.org/pipermail/zope-tests/2009-December/013176.html

Subject: OK : Zope-trunk Python-2.6.4 : Linux
From: Zope Tests
Date: Thu Dec 10 20:46:25 EST 2009
URL: http://mail.zope.org/pipermail/zope-tests/2009-December/013177.html

Subject: OK : Zope-trunk-alltests Python-2.6.4 : Linux
From: Zope Tests
Date: Thu Dec 10 20:48:25 EST 2009
URL: http://mail.zope.org/pipermail/zope-tests/2009-December/013178.html

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From forum: Zope - Dev

BTrees and id mapping (was Re: Data.fs size grows non-stop)

2009-12-11T03:09:10Z

Hello all,

So, I've been experimenting with a new structure for our date indexes,
and I was considering using an IOBTree that would map integer timestamps
to BTree-based sets. As for the sets, I considered two options:

1. An IITreeSet based on the OID and an additional IOBTree that maps
back the OIDs to objects;
2. An OOTreeSet;

As expected 1 was light years faster when I tried to query for large
timespans (doing normal union operations using OOTreeSets seems to be a
very slow operation). Still, for single days (and generally timespans
smaller than 7 days), the OOTreeSet seems to be much faster (apparently,
iterating through the all the ids in the resulting set and fetching the
corresponding object takes some time, even for sets with only one
member, so, IITreeSet seems to be in disadvantage here).
Does anyone have any advice on optimizing the first case? I believe the
IITreeSet is the way to go, but if only there was some way to make the
int<->object conversion operation less expensive...

Thanks in advance,

Pedro
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From forum: Zope - ZODB-Dev

Beginners Question about 'simple todo' tutorial

2009-12-10T20:56:07Z

Hi - I'm following "Simple Todo Application"
(http://worldcookery.com/files/jeffshell-todo/). I've got to
http://worldcookery.com/files/jeffshell-todo/step3.html - specifically
the bit where ...

"Above we have the ZMI add lists. The first one shows the root list,
including 'Todo List' and 'Todo', from the addMenuItem interfaces"

... the trouble is that although I've restarted the server there's sign
of any 'Todo' or 'Todo List' in the ZMI.

The tutorial doesn't make any mention of putting a file into
instance/etc/package-includes - could that be the problem ? The 'Todo'
and 'TodoList' classes are implemented in __init__.py - is that why you
don't need a instance/etc/package-includes ?

Any help gratefully received.

richard.

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From forum: Zope3 - users

Re: z3c.sqlalchemy 1.0.11

2009-12-10T17:25:49Z

On Thursday 10 December 2009, Christophe Combelles wrote:
> May I commit a tag for this version?
>
Sure, late tagging is no problem.

Regards,
Stephan
--
Entrepreneur and Software Geek
Google me. "Zope Stephan Richter"
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From forum: Zope - Dev

Re: ZODB 3.9/3.8 incompatibility (was Re: Data.fs size grows non-stop)

2009-12-10T17:12:21Z

On Thu, Dec 10, 2009 at 02:07:06PM -0500, Jim Fulton wrote:

> On Thu, Dec 10, 2009 at 1:50 PM, Marius Gedminas <marius@...> wrote:
> > On Thu, Dec 10, 2009 at 12:41:11PM -0500, Jim Fulton wrote:
> >> On Thu, Dec 10, 2009 at 11:54 AM, Marius Gedminas <marius@...> wrote:
> >> In 3.9 for FileStorage, if you give a starting tid that is toward the
> >> end of the file,
> >> it will scan backward, saving a lot of time.
> >
> > Ah, but how can I get a valid tid that is toward the end of the file?
> > I assume that if I give a tid that doesn't exist, I'll get an error --
> > which is the behavior oldstate() exhibits -- rather than the next
> > existing transaction after that timestamp, or I could fudge by getting
> > the current timestamp and subtracting 24 hours.
>
> No, the iterator starts at the first transactions who's tid is >= the
> start tid.
>
> So, guess a time and use repr(ZODB.TimeStamp.TimeStamp(...))

Cool! Thank you,

Marius Gedminas
--
This message has been ROT-13 encrypted twice for higher security.

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From forum: Zope - ZODB-Dev

Re: Remove from list

2009-12-10T11:33:10Z

https://mail.zope.org/mailman/listinfo/zope

Go to the bottom where it says:

"To unsubscribe from Zope, get a password reminder, or change your subscription options enter your subscription email address:"

On Thu, Dec 10, 2009 at 1:31 PM, Lukman Salifu Nayendi <kyzer45@...> wrote:

Please remove me from the mailing list.

thnx

Lukman Salifu Nayendi

Business Manager

SmartSoft Enterprise

P.O Box tl 595

Tamale, Ghana

+233 24 472 3365

+233 20 843 0582

Lukman Salifu Nayendi

Business Manager

SmartSoft Enterprise

P.O Box NT45

Accra, Ghana

+233 24 472 3365

+233 20 843 0582

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From forum: Zope - General

Remove from list

2009-12-10T11:31:24Z

Please remove me from the mailing list.

thnx

Lukman Salifu Nayendi

Business Manager

SmartSoft Enterprise

P.O Box tl 595

Tamale, Ghana

+233 24 472 3365

+233 20 843 0582

Lukman Salifu Nayendi

Business Manager

SmartSoft Enterprise

P.O Box NT45

Accra, Ghana

+233 24 472 3365

+233 20 843 0582

From forum: Zope - General

Re: SQL Method running twice

2009-12-10T11:14:13Z

Thanks for the reply... Are you suggesting that there may be an issue with MySQL receiving the data from zope and the way it handles it?

Strange thing is that I'm using the exact same method I have used thousands of times over and same code layout and this is the first time I'm seeing it. I've changed around a few things relating to variable names etc thinking it was the case but dumbing it down to the simplest way I can still is giving the error.

On Thu, Dec 10, 2009 at 1:03 PM, Andreas Jung <lists@...> wrote:

In case of a ZODB conflict error the whole request will be repeat up to
three times.
If you database does not provide proper transaction support (trible
check your MySQL
installation and your table type useage), you're doomed. A proper RDBMS
like Oracle
or Postgres will behave properly and abort the transaction in case of a
ZODB transaction
abort.

-aj

Am 10.12.09 19:59, schrieb Justin Dunsworth:

> I am running into a brand new issue today that I can't, for the life
> of me, figure out. I wrote a standard page to insert data into a MySQL
> table using Z SQL methods from a form like I always have but for some
> strange reason it's running the same query twice, thus adding a
> duplicate entry.
>
> I have confined the original code in it's own document, checked,
> double checked, and still no avail. Here's the code for the page:
>
> <dtml-var frame_header>
> <dtml-if addnewstatus>
> <dtml-try>
> <dtml-call "RootSQLMethods.admin.Status_Add(_.None,_)">
> <dtml-call "RESPONSE.redirect(BASE2+'/statuses')">
> <dtml-except>
> <p>Error while submitting! Status not added.</p>
> <br>Error type: <dtml-var error_type>
> <br>Error value: <dtml-var error_value>
> </dtml-try>
> </dtml-if>
> <form action="&dtml-URL;" method="post">
> <table class="tborder" align="center" width="30%" cellspacing="0" >
> <tr><td class="tcat" align="center" colspan="2" style="font-size:
> 12pt;">Add New Status</td></tr>
> <tr><td width="35%" align="right"><b>Name:</b></td><td
> width="65%"><input type="text" name="name_add" size=15></td></tr>
> <tr><td width="35%" align="right"
> valign="top"><b>Description:</b></td><td width="65%"><textarea
> name="description_add" cols=25 rows=4></textarea></td></tr>
> <tr><td width="35%" align="right"><b>Sort:</b></td><td
> width="65%"><input type="text" name="sort_add" value="5" size=1></td></tr>
> <tr><td align="center" colspan="2"><hr></td></tr>
> <tr>
> <td><input type="hidden" name="addnewstatus" value="1"></td>
> <td>
> <button class="button" onclick="this.form.submit()">Add
> Status</button>  
> <button class="button" onclick="window.location = '<dtml-var
> BASE2>/statuses'; return false;">Cancel</button>
> </td>
> </tr>
> </table>
> </form>
> <dtml-var frame_footer>
>
> I can run the SQL Method by itself and it works just fine (only
> inserting it once) but when run as a separate page it adds the two.
>
> Any assistance is appreciated
>
>
> _______________________________________________
> Zope maillist - Zope@...
> https://mail.zope.org/mailman/listinfo/zope
> ** No cross posts or HTML encoding! **
> (Related lists -
> https://mail.zope.org/mailman/listinfo/zope-announce
> https://mail.zope.org/mailman/listinfo/zope-dev )
>

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From forum: Zope - General

Re: ZODB 3.9/3.8 incompatibility (was Re: Data.fs size grows non-stop)

2009-12-10T11:07:06Z

On Thu, Dec 10, 2009 at 1:50 PM, Marius Gedminas <marius@...> wrote:

> On Thu, Dec 10, 2009 at 12:41:11PM -0500, Jim Fulton wrote:
>> On Thu, Dec 10, 2009 at 11:54 AM, Marius Gedminas <marius@...> wrote:
>> In 3.9 for FileStorage, if you give a starting tid that is toward the
>> end of the file,
>> it will scan backward, saving a lot of time.
>
> Ah, but how can I get a valid tid that is toward the end of the file?
> I assume that if I give a tid that doesn't exist, I'll get an error --
> which is the behavior oldstate() exhibits -- rather than the next
> existing transaction after that timestamp, or I could fudge by getting
> the current timestamp and subtracting 24 hours.

No, the iterator starts at the first transactions who's tid is >= the start tid.

So, guess a time and use repr(ZODB.TimeStamp.TimeStamp(...))

Jim

--
Jim Fulton
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From forum: Zope - ZODB-Dev

Re: SQL Method running twice

2009-12-10T11:03:58Z

In case of a ZODB conflict error the whole request will be repeat up to
three times.
If you database does not provide proper transaction support (trible
check your MySQL
installation and your table type useage), you're doomed. A proper RDBMS
like Oracle
or Postgres will behave properly and abort the transaction in case of a
ZODB transaction
abort.

-aj

Am 10.12.09 19:59, schrieb Justin Dunsworth:

> I am running into a brand new issue today that I can't, for the life
> of me, figure out. I wrote a standard page to insert data into a MySQL
> table using Z SQL methods from a form like I always have but for some
> strange reason it's running the same query twice, thus adding a
> duplicate entry.
>
> I have confined the original code in it's own document, checked,
> double checked, and still no avail. Here's the code for the page:
>
> <dtml-var frame_header>
> <dtml-if addnewstatus>
> <dtml-try>
> <dtml-call "RootSQLMethods.admin.Status_Add(_.None,_)">
> <dtml-call "RESPONSE.redirect(BASE2+'/statuses')">
> <dtml-except>
> <p>Error while submitting! Status not added.</p>
> <br>Error type: <dtml-var error_type>
> <br>Error value: <dtml-var error_value>
> </dtml-try>
> </dtml-if>
> <form action="&dtml-URL;" method="post">
> <table class="tborder" align="center" width="30%" cellspacing="0" >
> <tr><td class="tcat" align="center" colspan="2" style="font-size:
> 12pt;">Add New Status</td></tr>
> <tr><td width="35%" align="right"><b>Name:</b></td><td
> width="65%"><input type="text" name="name_add" size=15></td></tr>
> <tr><td width="35%" align="right"
> valign="top"><b>Description:</b></td><td width="65%"><textarea
> name="description_add" cols=25 rows=4></textarea></td></tr>
> <tr><td width="35%" align="right"><b>Sort:</b></td><td
> width="65%"><input type="text" name="sort_add" value="5" size=1></td></tr>
> <tr><td align="center" colspan="2"><hr></td></tr>
> <tr>
> <td><input type="hidden" name="addnewstatus" value="1"></td>
> <td>
> <button class="button" onclick="this.form.submit()">Add
> Status</button>
> <button class="button" onclick="window.location = '<dtml-var
> BASE2>/statuses'; return false;">Cancel</button>
> </td>
> </tr>
> </table>
> </form>
> <dtml-var frame_footer>
>
> I can run the SQL Method by itself and it works just fine (only
> inserting it once) but when run as a separate page it adds the two.
>
> Any assistance is appreciated
>
>
> _______________________________________________
> Zope maillist - Zope@...
> https://mail.zope.org/mailman/listinfo/zope
> ** No cross posts or HTML encoding! **
> (Related lists -
> https://mail.zope.org/mailman/listinfo/zope-announce
> https://mail.zope.org/mailman/listinfo/zope-dev )
>

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Charlottenstr. 37/1 \ The full-service network for your
D-72070 Tübingen \ Python, Zope and Plone projects
www.zopyx.com, info@... \ www.zopyxgroup.com
------------------------------------------------------------------------
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[lists.vcf]

begin:vcard fn:Andreas Jung n:Jung;Andreas org:ZOPYX Ltd. & Co. KG adr;quoted-printable:;;Charlottenstr. 37/1;T=C3=BCbingen;;72070;Germany email;internet:info@... title:CEO tel;work:+49-7071-793376 tel;fax:+49-7071-7936840 tel;home:+49-7071-793257 x-mozilla-html:FALSE url:www.zopyx.com version:2.1 end:vcard

From forum: Zope - General

Re: Connecting New Zope to old ZEO server

2009-12-10T11:00:56Z

Am 10.12.09 19:49, schrieb Brian Brinegar:

> As part of a migration plan we would like to have a Zope client running
> Zope 2.11.4 connect to a ZEO server running Zope 2.9.6 ZODB 3.6.2
>
> When trying to connect we get an error the following error:
>
> 2009-12-10T10:09:48 INFO ZEO.ClientStorage (6145) Testing connection
> <ManagedClientConnection ('192.168.1.51', 17900)>
> ------
> 2009-12-10T10:09:48 ERROR ZEO.zrpc.Connection(C) (192.168.1.51:17900)
> bad handshake 'Z303'
>
> Is it possible to have a new Zope connect to an old ZODB?
>
>

http://pypi.python.org/pypi/ZODB3/3.9.3#compatibility

"""
ZODB ZEO clients from ZODB 3.2 on can talk to ZODB 3.9 servers. ZODB ZEO
Clients can talk to ZODB 3.8 and 3.9 ZEO servers.
"""

...although this statement is in some way incoherent.

Andreas

[lists.vcf]

From forum: Zope - General

SQL Method running twice

2009-12-10T10:59:43Z

I am running into a brand new issue today that I can't, for the life of me, figure out. I wrote a standard page to insert data into a MySQL table using Z SQL methods from a form like I always have but for some strange reason it's running the same query twice, thus adding a duplicate entry.

I have confined the original code in it's own document, checked, double checked, and still no avail. Here's the code for the page:

<dtml-var frame_header>

<dtml-if addnewstatus>
<dtml-try>
    <dtml-call "RootSQLMethods.admin.Status_Add(_.None,_)">
    <dtml-call "RESPONSE.redirect(BASE2+'/statuses')">
<dtml-except>
    <p>Error while submitting! Status not added.</p>
    <br>Error type: <dtml-var error_type>
    <br>Error value: <dtml-var error_value>
</dtml-try>
</dtml-if>

<form action="&dtml-URL;" method="post">
<table class="tborder" align="center" width="30%" cellspacing="0" >
    <tr><td class="tcat" align="center" colspan="2" style="font-size: 12pt;">Add New Status</td></tr>
    <tr><td width="35%" align="right"><b>Name:</b></td><td width="65%"><input type="text" name="name_add" size=15></td></tr>
    <tr><td width="35%" align="right" valign="top"><b>Description:</b></td><td width="65%"><textarea name="description_add" cols=25 rows=4></textarea></td></tr>
    <tr><td width="35%" align="right"><b>Sort:</b></td><td width="65%"><input type="text" name="sort_add" value="5" size=1></td></tr>
    <tr><td align="center" colspan="2"><hr></td></tr>
    <tr>
      <td><input type="hidden" name="addnewstatus" value="1"></td>
      <td>
        <button class="button" onclick="this.form.submit()">Add Status</button>  
        <button class="button" onclick="window.location = '<dtml-var BASE2>/statuses'; return false;">Cancel</button>
      </td>
    </tr>
</table>
</form>

<dtml-var frame_footer>

I can run the SQL Method by itself and it works just fine (only inserting it once) but when run as a separate page it adds the two.

Any assistance is appreciated

From forum: Zope - General

Upcoming Zope releases

2009-12-10T10:56:36Z

My plan is to release new releases of Zope 2.9 - 2.12 on December 22nd.

Andreas

--
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------------------------------------------------------------------------
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[lists.vcf]

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From forum: Zope - Dev

Re: ZODB 3.9/3.8 incompatibility (was Re: Data.fs size grows non-stop)

2009-12-10T10:50:27Z

On Thu, Dec 10, 2009 at 12:41:11PM -0500, Jim Fulton wrote:

> On Thu, Dec 10, 2009 at 11:54 AM, Marius Gedminas <marius@...> wrote:
> ...
> > Well, there is IStorage, and I think all storages (except for
> > FileStorage) implemented it faithfully
>
> I guess that depends on what you mean by faithfully. MappingStorage
> and Demostorage
> in 3.8 inherited a null implementation from BaseStorage and it's
> arguable how faithful that
> implementation is.
>
> > (oid,
> > version-that-got-removed-in-3.9, size=1). FileStorage in 3.8 violated
> > the interface by renaming size=1 to length=1, but it's fixed in 3.9.
>
> and in 3.8.

*checks*

FileStorage in 3.8.1 violated the interface, to be precise.

ZODB 3.8.1 is mandated by
http://download.zope.org/zope3.4/3.4.0/versions.cfg, which our
production app currently uses.

(Kinda offtopic: Is there a newer 3.4 KGS release?
http://download.zope.org/ tells me "Welcome" and nothing more.
http://download.zope.org/zope3.4/ tells me in great big joyful letters
at the top of the page "zope 3.4.0 Has Been Released!")

> > What I miss _a lot_ is a way to look at the last several transactions.
> > There's the iterator API, but it goes from oldest-to-latest, and when
> > you've got a large DB, that takes a while (85 seconds for a Data.fs with
> > 922737 transactions and 8 GB of data, with 100 MB/s read throughput).
>
> In 3.9 for FileStorage, if you give a starting tid that is toward the
> end of the file,
> it will scan backward, saving a lot of time.

Ah, but how can I get a valid tid that is toward the end of the file?
I assume that if I give a tid that doesn't exist, I'll get an error --
which is the behavior oldstate() exhibits -- rather than the next
existing transaction after that timestamp, or I could fudge by getting
the current timestamp and subtracting 24 hours.

> I've attached an analysis script that illustrates iterating backward.

Thank you!

(Mutt is inconvenient: there's no way to look at attachments while you're
replying to a message.)

> Someday, someone should get around to adding an option to the file-storage
> iterator to go backward.

Marius Gedminas
--
Life begins when you can spend your spare time programming instead of
watching television.
-- Cal Keegan

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From forum: Zope - ZODB-Dev

Connecting New Zope to old ZEO server

2009-12-10T10:49:12Z

As part of a migration plan we would like to have a Zope client running
Zope 2.11.4 connect to a ZEO server running Zope 2.9.6 ZODB 3.6.2

When trying to connect we get an error the following error:

2009-12-10T10:09:48 INFO ZEO.ClientStorage (6145) Testing connection
<ManagedClientConnection ('192.168.1.51', 17900)>
------
2009-12-10T10:09:48 ERROR ZEO.zrpc.Connection(C) (192.168.1.51:17900)
bad handshake 'Z303'

Is it possible to have a new Zope connect to an old ZODB?

Thanks,

--
Brian Brinegar
Web Services Coordinator
Engineering Computer Network
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From forum: Zope - General

Re: ZODB 3.9/3.8 incompatibility (was Re: Data.fs size grows non-stop)

2009-12-10T09:41:11Z

On Thu, Dec 10, 2009 at 11:54 AM, Marius Gedminas <marius@...> wrote:
...
> Well, there is IStorage, and I think all storages (except for
> FileStorage) implemented it faithfully

I guess that depends on what you mean by faithfully. MappingStorage
and Demostorage
in 3.8 inherited a null implementation from BaseStorage and it's
arguable how faithful that
implementation is.

> (oid,
> version-that-got-removed-in-3.9, size=1). FileStorage in 3.8 violated
> the interface by renaming size=1 to length=1, but it's fixed in 3.9.

and in 3.8.

...

> What I miss _a lot_ is a way to look at the last several transactions.
> There's the iterator API, but it goes from oldest-to-latest, and when
> you've got a large DB, that takes a while (85 seconds for a Data.fs with
> 922737 transactions and 8 GB of data, with 100 MB/s read throughput).

In 3.9 for FileStorage, if you give a starting tid that is toward the
end of the file,
it will scan backward, saving a lot of time.

I've attached an analysis script that illustrates iterating backward.
Someday, someone should get around to adding an option to the file-storage
iterator to go backward.

Jim

--
Jim Fulton

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From forum: Zope - ZODB-Dev

Re: ZODB 3.9/3.8 incompatibility (was Re: Data.fs size grows non-stop)

2009-12-10T08:54:57Z

On Thu, Dec 10, 2009 at 10:08:36AM -0500, Jim Fulton wrote:

> On Thu, Dec 10, 2009 at 5:58 AM, Marius Gedminas <marius@...> wrote:
> > On Wed, Dec 09, 2009 at 01:04:03PM -0500, Jim Fulton wrote:
> >> On Wed, Dec 9, 2009 at 12:06 PM, Marius Gedminas <marius@...> wrote:
> >> ...
> >> > (Supporting both ZODB 3.8 and 3.9 is kinda tricky, but with some very
> >> > ugly hacks I managed.)
> >>
> >> This sounds like something that needs to be fixed. Can you share some of the
> >> issues you ran into? (Or maybe file bugs reports.)
> >
> > Two issues only:
> >
> > * In ZODB 3.8 PersistentDict and PersistentMapping are unrelated
> > classes, so if I want to have adapters for both, I have to register
> > them separately in ZCML. In ZODB 3.9, PersistentDict is an alias
> > for PersistentMapping, so I get a ZCML configuration conflict error
> > if I have adapter directives for both.
>
> OK, it's impractical to do anything about this.
>
> >
> > Solved by defining a decoy class for one of the adapters so they
> > don't conflict.
>
> Hm, I'm not sure I follow this.

Code:

if PersistentMapping is PersistentDict:
# <...snip large comment explaining this...>
class DecoyPersistentDict(PersistentMapping):
"""Decoy to avoid ZCML errors while supporting both ZODB 3.8 and 3.9."""
class PersistentDictState(PersistentMappingState):
"""Decoy to avoid ZCML errors while supporting both ZODB 3.8 and 3.9."""
adapts(DecoyPersistentDict, dict, None)
else:
class PersistentDictState(PersistentMappingState):
"""Convenient access to a persistent dict's items."""
adapts(PersistentDict, dict, None)

ZCML:

<adapter factory=".state.PersistentDictState" />
<adapter factory=".state.PersistentMappingState" />

> You could have used a different
> approach of providing the second adapter registration as an override.

Oooh, neat hack. But I'm not sure I like it better than the one I
implemented.

> > * In ZODB 3.8, the 'version' argument of ClientStorage.history (as well
> > as other kinds of storages, I suppose) is mandatory. In ZODB 3.9
> > it's gone.

I went back and corrected my statement (originally it referred to
FileStorage.history, and I was thinking about ClientStorage in my
parenthetical statement), and then I of course forgot to remove the
now-obsolete parenthetical statement itself.

> It's mandatory in ClientStorage and optional in FileStorage. (MappingStorage and
> DemoStorage don't have a history method in 3.8.
>
> I suggest we treat this as a bug in 3.8 and make the version argument
> to ClientStorage's history method optional in a 3.8 bug fix release.

+1

> > Solved by peeking into the method signature with inspect.getargspec()
> > and supplying a version only if it's needed.
>
> Ick. :)

:)

> >> In particular, I think it should be a goal that it isn't too hard to
> >> write code that works with both ZODB 3.8 and 3.9.
> >
> > Normal code doesn't usually play with storage.history, I'd say, so I'm
> > not too peeved by having to do various contortions.
>
> Zope 2 had (has?) a standard view for looking at an object's history
> that I found very useful. I wish there was one for Zope3.

Well, there is IStorage, and I think all storages (except for
FileStorage) implemented it faithfully (oid,
version-that-got-removed-in-3.9, size=1). FileStorage in 3.8 violated
the interface by renaming size=1 to length=1, but it's fixed in 3.9.

I personally would like to be able to have size=None imply "unlimited,
give me as much as you've got"), but 9999999999999999 works just as well
in practice.

What I miss _a lot_ is a way to look at the last several transactions.
There's the iterator API, but it goes from oldest-to-latest, and when
you've got a large DB, that takes a while (85 seconds for a Data.fs with
922737 transactions and 8 GB of data, with 100 MB/s read throughput).

> History can be very useful in my experience.

Oh yes. This is why I stopped packing my production Data.fs'es and
first started using storage.history() with a couple of nice wrappers
from debugzope shell, and, later, convinced a coworker to write
ZODBBrowser.

Marius Gedminas
--
I used to think I was indecisive, but now I'm not so sure.

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From forum: Zope - ZODB-Dev

Re: Data.fs size grows non-stop

2009-12-10T08:12:48Z

Hi Pedro

> Betreff: Re: AW: [ZODB-Dev] Data.fs size grows non-stop
>
>
> > If you need performance, take a look at the z3c.indexer
> package which
> > offers a much faster indexing concept. I implemented this package
> > because my app coudn't handle the implicit default indexing
> handling.
> > The README.txt explains what is different and how to use it. It
> > defently needs some work to implement a z3c.indexer based indexing
> > concept but if you do it right, it can handle a lot more indexing
> > tasks then the generic zope or zc.catalog concept.
> >
> >
> Thanks a lot. But is it easy to use this from within a
> non-Zope application? In the examples I could see references
> to several zope.site classes, such as LocalSiteManager...
> since this is a standalone app, I wonder if it won't force us
> to import some other zope packages...

The site is only used as a sample setup and for provide
a local persistent IIntIds utility.

Every zope catalog implementation needs an object id
normaly an id given from IIntIds.

But if your app provides another unique integer id
for each object, you can use the z3c.indexer package
with small modifications.

But of corse it will bring in some dependencies,
but not more then the zope or zc.catalog will.

Let me know if you could use the package with less
dependencies then we have now and we can try to cut
the dependencies down or probably defined them as test
dependencies

Regards
Roger Ineichen

> Pedro
> >> Pedro
> >> _______________________________________________
> >> For more information about ZODB, see the ZODB Wiki:
> >> http://www.zope.org/Wikis/ZODB/
> >>
> >> ZODB-Dev mailing list - ZODB-Dev@...
> >> https://mail.zope.org/mailman/listinfo/zodb-dev
> >>
> >>
> >
> >
>
>

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From forum: Zope - ZODB-Dev

Re: Treffen am Dienstag, 15.12.09

2009-12-10T07:48:10Z

Hallo Zusammen,

> - am 15. Dezember, 18:30
> - wo: LMU, Institut fuer Informatik, Oettingenstr. 67,
> Raum Z 1.09 - das ist in der Mitte des Gebäudes
> (Zentralbereich), 1.OG

ich hab das wieder auf plone.org und plone.zope.de übernommen.

> Als Themen stehen oben auf der Liste (das umfassende Thema "Plone Deployment"
> wollten wir angehen, wenn wir wieder mal an der TU sind):

Wollten wir uns nicht etwas um plone.zope.de bzw. den World Plone Day
kümmern? Vielleicht kriegen wir ja alles unter einen Hut...

> - Zugriff auf Sessiondaten in Plone

Dazu kann ich ein wenig zeigen.

> Kann jemand zu einem dieser Themen etwas beitragen? Gibt es aktuelle
> Problemstellungen aus diesen Bereichen, die wir gemeinsam bearbeiten könnten?

Aktuelle Problemstellung wäre wie man via jQuery am geschicktesten
Session-Daten manipuliert. Ich mache das momentan über .py die im Skin
Folder liegen.

> Ich selbst könnte ggf. etwas zu memoize bzw. allgemein zum Caching innerhalb
> Zope erzählen...

+1

Soweit ich weiß kann man die Decorater auch mit Parametern füttern - ist
das korrekt? Bei mir hat das nur nie wirklich geklappt.

Gruß, Stefan.

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From forum: Zope-Munich

script to help with dependency cleanup

2009-12-10T07:34:49Z

Hi,

With all the dependency cleanup going on in the ZTK (and grok 1.1alpha)
we wanted to try it out with our internal packages. So: removing
unneeded dependencies from code.

"If you import from it, you must mention it as a dependency in your
setup.py", so the setup.py needs cleaning up, too.

To make that easier, I made z3c.dependencychecker that gives you a handy
report on what to add or remove. Be careful and do some grepping of
your own, too. And run the tests. And watch out for the obvious naming
problems like PIL/Imaging and ZODB/persistence/btree.

Anyway: 1.0 is just out:
http://pypi.python.org/pypi/z3c.dependencychecker

I've already fixed up grok's grokcore packages with this (and our
intenral ones), so it is tested on a reasonable set of packages.

Reinout

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From forum: Zope - Dev

Re: ZODB 3.9/3.8 incompatibility (was Re: Data.fs size grows non-stop)

2009-12-10T07:08:36Z

On Thu, Dec 10, 2009 at 5:58 AM, Marius Gedminas <marius@...> wrote:

> On Wed, Dec 09, 2009 at 01:04:03PM -0500, Jim Fulton wrote:
>> On Wed, Dec 9, 2009 at 12:06 PM, Marius Gedminas <marius@...> wrote:
>> ...
>> > (Supporting both ZODB 3.8 and 3.9 is kinda tricky, but with some very
>> > ugly hacks I managed.)
>>
>> This sounds like something that needs to be fixed. Can you share some of the
>> issues you ran into? (Or maybe file bugs reports.)
>
> Two issues only:
>
> * In ZODB 3.8 PersistentDict and PersistentMapping are unrelated
> classes, so if I want to have adapters for both, I have to register
> them separately in ZCML. In ZODB 3.9, PersistentDict is an alias
> for PersistentMapping, so I get a ZCML configuration conflict error
> if I have adapter directives for both.

OK, it's impractical to do anything about this.

>
> Solved by defining a decoy class for one of the adapters so they
> don't conflict.

Hm, I'm not sure I follow this. You could have used a different
approach of providing the second adapter registration as an override.

> * In ZODB 3.8, the 'version' argument of ClientStorage.history (as well
> as other kinds of storages, I suppose) is mandatory. In ZODB 3.9
> it's gone.

It's mandatory in ClientStorage and optional in FileStorage. (MappingStorage and
DemoStorage don't have a history method in 3.8.

I suggest we treat this as a bug in 3.8 and make the version argument
to ClientStorage's history method optional in a 3.8 bug fix release.

> Solved by peeking into the method signature with inspect.getargspec()
> and supplying a version only if it's needed.

Ick. :)

>> In particular, I think it should be a goal that it isn't too hard to
>> write code that works with both ZODB 3.8 and 3.9.
>
> Normal code doesn't usually play with storage.history, I'd say, so I'm
> not too peeved by having to do various contortions.

Zope 2 had (has?) a standard view for looking at an object's history
that I found very useful. I wish there was one for Zope3.

History can be very useful in my experience.

Jim

--
Jim Fulton
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From forum: Zope - ZODB-Dev

Re: Data.fs size grows non-stop

2009-12-10T06:58:51Z

On Thu, Dec 10, 2009 at 4:06 AM, Pedro Ferreira
<jose.pedro.ferreira@...> wrote:

> Jim Fulton wrote:
>>
>> On Wed, Dec 9, 2009 at 10:54 AM, Pedro Ferreira
>> <jose.pedro.ferreira@...> wrote:
>> ...
>>
>>>
>>> Well, at least we won't have to rewrite the whole bucket... but still, it
>>> would be much nicer to fragment the list
>>> in smaller chunks. We could use an OOBTree instead... but something less
>>> complex would suffice... any suggestions?
>>>
>>
>> It's hard for people to suggest something without knowing your usage
>> pattern.
>> Do you want something that is effectively a set?
>
> The situation is simple: we have events (objects) that have to be indexed by
> date. We currently use an OOBTree with the days as keys and lists of objects
> as values. The objective is to avoid rewriting these lists each time
> something changes, since we can have tens of thousands of events in the same
> day. Some kind of btree-based list or set would work, I guess.
>>
>> Is integer indexing important?
>>
>
> Well, it's an index of dates, so, I guess we could use integers as keys
> instead of strings, as we are now.

I wasn't referring to indexing at that level. You were using lists
rather than sets
and I was wondering whether there was a reason for that.

It sounds like a data structure with minimal container semantics
would be fine to store the events for a day.

If you can arrange that the events have a stable ordering such that
no 2 events are equal, then you can use OOTreeSets rather than
lists.

Jim

--
Jim Fulton
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From forum: Zope - ZODB-Dev

Re: z3c.sqlalchemy 1.0.11

2009-12-10T06:46:39Z

Andreas Jung a écrit :

> Am 10.12.09 13:34, schrieb Christophe Combelles:
>> Hi,
>>
>> There is no tag for z3c.sqlalchemy 1.0.11
>>
>> http://svn.zope.org/z3c.sqlalchemy/tags/?rev=106375
>>
>> and the latest package on PyPI is 1.0.12. No other earlier versions.
>>
>>
>> We have an application in production with z3c.sqlalchemy 1.0.11.
>
> 1.0.12 likely only a minor bugfix release. So go with this version.

We had actually no problem regenerating a package from the revision
corresponding to 1.0.11; but our problem is to be able to regenerate a buildout
identical to what we have in production (ie with 1.0.11), with packages from
PyPI. Version 1.0.11 is mentionned in the changelog, but does not exist
anywhere today.
We've done it with our internal PyPI mirror, but someone else might want to use
any version prior to 1.0.12, for example to reproduce some specific problem.

is it a problem to create a tag, and upload packages?

>
> -aj

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From forum: Zope - Dev

Re: Data.fs size grows non-stop

2009-12-10T06:38:09Z

Hello,
> Are the values in your BTree implemented as persistent lists or some
> other subclass of Persistent? That makes a big difference in the size
> of each commit to the BTree.
>
Yes, that is exactly the problem. We are using simple Python lists, and
that implies rewriting the whole bucket.
Still, rewriting only the list won't be the best solution, since they
can be pretty big sometimes. That's why I was looking for something like
a BTree-based list (that actually seems to exist).

Regards,

Pedro

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From forum: Zope - ZODB-Dev

Re: Data.fs size grows non-stop

2009-12-10T06:36:15Z

> If you need performance, take a look at the z3c.indexer package
> which offers a much faster indexing concept. I implemented
> this package because my app coudn't handle the implicit default
> indexing handling. The README.txt explains what is different and how
> to use it. It defently needs some work to implement a z3c.indexer
> based indexing concept but if you do it right, it can handle a
> lot more indexing tasks then the generic zope or zc.catalog
> concept.
>
>

Thanks a lot. But is it easy to use this from within a non-Zope
application? In the examples I could see references to several zope.site
classes, such as LocalSiteManager... since this is a standalone app, I
wonder if it won't force us to import some other zope packages...

Pedro

>> Pedro
>> _______________________________________________
>> For more information about ZODB, see the ZODB Wiki:
>> http://www.zope.org/Wikis/ZODB/
>>
>> ZODB-Dev mailing list - ZODB-Dev@...
>> https://mail.zope.org/mailman/listinfo/zodb-dev
>>
>>
>
>

From forum: Zope - ZODB-Dev

Re: /Manage access from some networks

2009-12-10T06:20:30Z

http://httpd.apache.org/docs/1.3/mod/mod_access.html

Jeffrey D Peterson

Webmaster

Crary Industries, Inc.

From: zope-bounces@... [mailto:zope-bounces@...] On Behalf Of iarly selbir | ski0s
Sent: Thursday, December 10, 2009 6:13 AM
To: zope@...
Subject: [Zope] /Manage access from some networks

That's possible? I want allow the access to /manage of my zope instances only for some know networks, My zope has Apache as frontend.

Thanks in advance for any help.

Regards,

- -
iarly selbir | ski0s

:wq!

From forum: Zope - General

Re: Data.fs size grows non-stop

2009-12-10T05:29:38Z

Hi Pedro

> Betreff: Re: [ZODB-Dev] Data.fs size grows non-stop
>
>
> > Why not store the events on some BTree or similar structure with a
> > simple unique integer id, and use a separate BTree to map dates to
> > these events? You can even use zc.catalog or similar tools
> to create
> > that mapping - you would get a lot of query options for
> free with those as well.
> >
> >
> Yeah, that would require a lot of changes, but it would be
> definitely great. What does zc.catalog have that zope.catalog
> doesn't, by the way?

If you need performance, take a look at the z3c.indexer package
which offers a much faster indexing concept. I implemented
this package because my app coudn't handle the implicit default
indexing handling. The README.txt explains what is different and how
to use it. It defently needs some work to implement a z3c.indexer
based indexing concept but if you do it right, it can handle a
lot more indexing tasks then the generic zope or zc.catalog
concept.

Here are some performance data:

z3c.indexer
indexer based indexing time: 2.47 s

zope.catalog
catalog based indexing time: 14.41 s

btw,
You can run the performance test by yourself
located in the z3c.indexer package.

Regards
Roger Ineichen

> Pedro
> _______________________________________________
> For more information about ZODB, see the ZODB Wiki:
> http://www.zope.org/Wikis/ZODB/
>
> ZODB-Dev mailing list - ZODB-Dev@...
> https://mail.zope.org/mailman/listinfo/zodb-dev
>

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From forum: Zope - ZODB-Dev

Re: z3c.sqlalchemy 1.0.11

2009-12-10T04:36:41Z

Am 10.12.09 13:34, schrieb Christophe Combelles:

> Hi,
>
> There is no tag for z3c.sqlalchemy 1.0.11
>
> http://svn.zope.org/z3c.sqlalchemy/tags/?rev=106375
>
> and the latest package on PyPI is 1.0.12. No other earlier versions.
>
>
> We have an application in production with z3c.sqlalchemy 1.0.11.

1.0.12 likely only a minor bugfix release. So go with this version.

-aj

[lists.vcf]

From forum: Zope - Dev

z3c.sqlalchemy 1.0.11

2009-12-10T04:34:34Z

Hi,

There is no tag for z3c.sqlalchemy 1.0.11

http://svn.zope.org/z3c.sqlalchemy/tags/?rev=106375

and the latest package on PyPI is 1.0.12. No other earlier versions.

We have an application in production with z3c.sqlalchemy 1.0.11. I don't know
how the paquage we use was generated, but we needed to regenerate it,
and we found that the revision for 1.0.11 is r78477

May I commit a tag for this version?

It would also be good that earlier packages be generated and uploaded to PyPI. I
can do it if someone gives me admin access to it.

regards,
Christophe
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From forum: Zope - Dev

/Manage access from some networks

2009-12-10T04:12:39Z

That's possible? I want allow the access to /manage of my zope instances only for some know networks, My zope has Apache as frontend.

Thanks in advance for any help.

Regards,

- -
iarly selbir | ski0s

:wq!

From forum: Zope - General

Zope Tests: 6 OK

2009-12-10T03:59:32Z

Summary of messages to the zope-tests list.
Period Wed Dec 9 12:00:00 2009 UTC to Thu Dec 10 12:00:00 2009 UTC.
There were 6 messages: 6 from Zope Tests.

Tests passed OK
---------------

Subject: OK : Zope-2.10 Python-2.4.6 : Linux
From: Zope Tests
Date: Wed Dec 9 21:19:41 EST 2009
URL: http://mail.zope.org/pipermail/zope-tests/2009-December/013167.html

Subject: OK : Zope-2.11 Python-2.4.6 : Linux
From: Zope Tests
Date: Wed Dec 9 21:21:41 EST 2009
URL: http://mail.zope.org/pipermail/zope-tests/2009-December/013168.html

Subject: OK : Zope-2.12 Python-2.6.4 : Linux
From: Zope Tests
Date: Wed Dec 9 21:23:41 EST 2009
URL: http://mail.zope.org/pipermail/zope-tests/2009-December/013169.html

Subject: OK : Zope-2.12-alltests Python-2.6.4 : Linux
From: Zope Tests
Date: Wed Dec 9 21:25:51 EST 2009
URL: http://mail.zope.org/pipermail/zope-tests/2009-December/013170.html

Subject: OK : Zope-trunk Python-2.6.4 : Linux
From: Zope Tests
Date: Wed Dec 9 21:27:51 EST 2009
URL: http://mail.zope.org/pipermail/zope-tests/2009-December/013171.html

Subject: OK : Zope-trunk-alltests Python-2.6.4 : Linux
From: Zope Tests
Date: Wed Dec 9 21:29:56 EST 2009
URL: http://mail.zope.org/pipermail/zope-tests/2009-December/013172.html

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From forum: Zope - Dev

Re: ZODB 3.9/3.8 incompatibility (was Re: Data.fs size grows non-stop)

2009-12-10T03:57:25Z

On Thu, Dec 10, 2009 at 11:08:25AM +0000, Chris Withers wrote:

> Marius Gedminas wrote:
> > * In ZODB 3.8, the 'version' argument of ClientStorage.history (as well
> > as other kinds of storages, I suppose) is mandatory. In ZODB 3.9
> > it's gone.
> >
> > Solved by peeking into the method signature with inspect.getargspec()
> > and supplying a version only if it's needed.
>
> I believe this may be fixed with 3.9.4 is released.
> ...but it sounds like your code isn't ending up using the Z303 adapter,
> which is why you're running into the problem.

What's Z303?

> How are you mixing versions? 3.8 on client and 3.9 on server or?

I'm not mixing versions at runtime; my intent is to write code that
works with either ZODB 3.8.x or 3.9.x.

You can see it here in all its glory:
http://bazaar.launchpad.net/~zodbbrowser-dev/zodbbrowser/trunk/annotate/head:/src/zodbbrowser/history.py#L30

http://bazaar.launchpad.net/~zodbbrowser-dev/zodbbrowser/trunk/annotate/head:/src/zodbbrowser/state.py#L115

> (sorry, I lost the previous thread and saw this as a new one when Jim
> changed the subject line...)

This is a new topic, completely unrelated to the previous thread.

Marius Gedminas
--
I'm a shareware signature! Send $2 if you use me, $10 for a manual.

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