[Zope-dev] Re: AW: Annoying: Download error: unknown url type: svn -- Some packages may not be found!

2008-05-06 Thread Radim Novotny

Roger Ineichen napsal(a):

Hi David
 
Betreff: [Zope-dev] Annoying: Download error: unknown url 
type: svn -- Some packages may not be found!


Which package is emitting the Download error: unknown url 
type: svn -- Some packages may not be found! Its quite 
annoying and I have been seeing it crop up in a few builds. 
Anyone else seeing this. Many thanks.


I see this too. Try the buildout debug option, probably this
will you give a better output.


I have got the same error today. buildout - was not sufficient so I 
added print output to setuptools/package_index.py and discovered this 
message is caused by z3c.form:


Getting required 'z3c.form'
  required by plone.z3cform 0.1b2.
Reading  http://pypi.python.org/simple/z3c.form/
Reading  svn://svn.zope.org/repos/main/z3c.form
Download error: unknown url type: svn -- Some packages may not be found!
Reading  http://svn.zope.org/z3c.form
We have the best distribution that satisfies 'z3c.form'.
Adding find link 'http://download.zope.org/distribution' from z3c.form 1.8.2
Picked: z3c.form = 1.8.2


--
Radim Novotny

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Re: [Zope-dev] Re: zope.sqlalchemy

2008-05-06 Thread Michael Bayer


On May 6, 2008, at 5:24 PM, Martijn Faassen wrote:


Hey Michael,

Thanks for the input!

Michael Bayer wrote:
[snip]
So I've already not liked save_on_init for a couple of years due to  
its inherent intrusiveness, and because SA historically does not  
like being in the business of providing framework features (though  
we have decided to stay in that arena to some degree with  
declarative and scoped_session).


I'll try to summarize the discussion so I can find out whether I  
understand it. Basically you're saying you don't think save on  
instantiation is a good idea generally, and that we should be using  
session.save(). This is going to be changed to session.add() in the  
future. What would session.add_all() do?


session.add_all() is just:  session.add_all([obj1, obj2, obj3, ...])   
Also session.save()/update/save_or_update will remain throughout 0.5  
at least.


This ties into the mapper feature, which also offers other features.  
The one feature that will remain but in a new shape, without the  
mapper, is the ability to do MyClass.query.



Is that a correct summary?


Session.mapper and save_on_init has no plans of going away in 0.5, but  
I plan to de-emphasize it.The "query" descriptor function is also  
available in 0.4.


- mike


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[Zope-dev] Re: New i18n locale extraction concept

2008-05-06 Thread Maurits van Rees
Christian Zagrodnick, on 2008-05-01:
> On 2008-05-01 02:06:17 +0200, "Roger Ineichen" <[EMAIL PROTECTED]> said:
>> 
>> 
>> What does this mean?
>> The locale extraction is now a part of a recipe
>> and not a part of a package itself.
>> 
>> My goal is to remove the dependencies in the
>> z3c.recipe.i18n, because right now it uses the
>> base implementation in zope.app.locales which makes
>> it depend on the hole zope namepsace. Because of
>> the overall zope.* dependenc in zope.app.locale.
>
> Actually, there is lovely.receipe:i18n which provides i18n extraction. 
> Does z3c.recipe.i18n something else or why is there yet another i18n 
> recipe?

For me a downside of lovely.recipe:i18n is that it has too many
dependencies: the whole of zope.  When easy installing it in a virtual
env, you end up with 44 MB of eggs.

For comparison, easy installing i18ndude needs about 6 MB.

See this (currently) small thread in grok-dev:
http://thread.gmane.org/gmane.comp.web.zope.grok.devel/4742

-- 
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Work | http://zestsoftware.nl/
"This is your day, don't let them take it away." [Barlow Girl]

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Re: [Zope-dev] Re: zope.sqlalchemy

2008-05-06 Thread Christian Theune
Hi,

On Tue, May 06, 2008 at 12:53:05PM -0400, Michael Bayer wrote:
>
> On May 6, 2008, at 12:14 PM, Laurence Rowe wrote:
>
>> Martijn Faassen wrote:
>>> One thing I understood from Christian Theune is that with scoped  
>>> sessions, explicit session.save() is not always necessary. Since I  
>>> see it being used here, could you perhaps comment on this?
>>
>> Registering a mapper with Session.mapper would work with this  
>> extension, but I'm reluctant to recommend it for two reasons: I don't 
>> know how it works with the declarative plugin; and it necessarily 
>> limits mapped classes to a single Session and therefor a single engine. 
>> In a zope context I think it's quite likely that you could have the 
>> same classes mapped to different databases (i.e. two instances of a 
>> single application).
>
> hi there -
>
> a little background on the "save_on_init" option of Session.mapper.
> This behavior has its roots way back in SQLAlchemy 0.1, when there was  
> no Session or Query or anything like that, and objects, when  
> instantiated, went directly to a thread-local registry automatically.   
> When SQLA 0.2 came out, we introduced all the additional constructs like 
> Session and such which are familiar today, but extensions were provided 
> which, when enabled, would re-enable the 0.1 behavior of "everything 
> threadlocal/automatic" in a similar way.   Ultimately thats where 
> Session.mapper comes from.

That's interesting, thanks for the heads-up. For some reason I didn't hit that
and was quite happy with save on init (I obviously only use one database at a
time ...) but the reasons and concerns given tell me that our core transaction
integration shouldn't force this onto people and we might not want to use it
for grok at all.

In fact at the sprint we discussed the similarities and differences of RDB
versus ODB and found that the step of 'add an object to the db' is actually
two functions (in one gesture) in the ODB: relate object B to object A
and, therefore add it to the same database as object A is in.

Whereas (due to the mapping of classes to tables) in RDB we only need to tell
which database to go to. Those are similar but differen gestures and I'm not
sure we had a definitive result when discussing this.


Christian

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[Zope-dev] Re: zope.sqlalchemy

2008-05-06 Thread Martijn Faassen

Hey Michael,

Thanks for the input!

Michael Bayer wrote:
[snip]
So I've already not liked save_on_init for a couple of years due to its 
inherent intrusiveness, and because SA historically does not like being 
in the business of providing framework features (though we have decided 
to stay in that arena to some degree with declarative and scoped_session).


I'll try to summarize the discussion so I can find out whether I 
understand it. Basically you're saying you don't think save on 
instantiation is a good idea generally, and that we should be using 
session.save(). This is going to be changed to session.add() in the 
future. What would session.add_all() do?


This ties into the mapper feature, which also offers other features. The 
one feature that will remain but in a new shape, without the mapper, is 
the ability to do MyClass.query.


Is that a correct summary?

Regards,

Martijn

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[Zope-dev] Re: zope.sqlalchemy

2008-05-06 Thread Martijn Faassen

Laurence Rowe wrote:
[snip]
This is great news, also for megrok.rdb, which we started to develop 
at the Grokkerdam sprint.


I read somewhere on one of the blog planets that you had discussed 
container implementations. Any more information/code about this? I'm 
quite hopeful that Zope 2.12 will let us share much more code now that 
Acquisition is being tamed.


Our sketchy code is in grokapps/rdbexample. The 'megrok.rdb' is a 
package in there right now. It's all cobbled together in unpolished form 
for the time being. We just basically reuse the mapping implementation 
SQLAlchemy already offers and give it an IContainer interface. It's not 
done yet but it's a large part of the solution.


I'm writing a report on the grokkerdam sprint, but it isn't out yet.

Regards,

Martijn



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[Zope-dev] Re: [Repoze-dev] Somebody needs to talk at EuropPython.

2008-05-06 Thread Godefroid Chapelle

Lennart Regebro wrote:

So, we need talks at EuropPython about both Repoze and Grok. I can't
go, but I want to make sure *somebody* does. :)
Hands up: Who is talking about Grok, and who talks about Repoze? :)

Other super-cool Zope technologies that should be talked about?



I think Lennart is really hitting a nail here. We need to advertize 
about our great efforts.


I wont be in EuroPython even if I would have spoken about it with pleasure.

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Re: [Zope-dev] Re: zope.sqlalchemy

2008-05-06 Thread Michael Bayer


On May 6, 2008, at 12:14 PM, Laurence Rowe wrote:


Martijn Faassen wrote:
One thing I understood from Christian Theune is that with scoped  
sessions, explicit session.save() is not always necessary. Since I  
see it being used here, could you perhaps comment on this?


Registering a mapper with Session.mapper would work with this  
extension, but I'm reluctant to recommend it for two reasons: I  
don't know how it works with the declarative plugin; and it  
necessarily limits mapped classes to a single Session and therefor a  
single engine. In a zope context I think it's quite likely that you  
could have the same classes mapped to different databases (i.e. two  
instances of a single application).


hi there -

a little background on the "save_on_init" option of Session.mapper.
This behavior has its roots way back in SQLAlchemy 0.1, when there was  
no Session or Query or anything like that, and objects, when  
instantiated, went directly to a thread-local registry  
automatically.   When SQLA 0.2 came out, we introduced all the  
additional constructs like Session and such which are familiar today,  
but extensions were provided which, when enabled, would re-enable the  
0.1 behavior of "everything threadlocal/automatic" in a similar way.
Ultimately thats where Session.mapper comes from.


Like all typing-savers, "save on init" by then was used by dozens of  
Pylons users who swore by it and would scream and yell at any hint of  
removing this already legacy feature.  At the same time, new users who  
were using Pylons tutorials (and therefore save_on_init, without  
really knowing it) in conjunction with creating their own Session  
objects were baffled by error messages like "object X is already in  
session Y".


By the time 0.4 came out, we had started automating Session a lot  
more, adding autoflush capability to it.  This feature immediately had  
issues with save_on_init for this reason:


class MyClass(object):
def __init__(self):
self.some_variable = session.query(Foobar).filter(xyz).one()

Where above, the query(Foobar) would fire off autoflush, MyClass would  
be flushed, and then an IntegrityError would be raised since MyClass  
would be missing some necessary state.   Changing "save_on_init" to  
fire off *after* __init__ was a possibility there but then other  
things could break.


So I've already not liked save_on_init for a couple of years due to  
its inherent intrusiveness, and because SA historically does not like  
being in the business of providing framework features (though we have  
decided to stay in that arena to some degree with declarative and  
scoped_session).


The "Session.mapper" feature is stressed a whole lot less in the 0.4  
docs, and as I work on the 0.5 docs this week I'm feeling very much  
like I'm going to remove it from the main documentation altogether.  
We''re consolidating the "save/update/save_or_update" names into just  
"add()" and "add_all()", so explicitly adding items to a Session  
should be a more pleasant experience which I wouldn't want anyone to  
miss.


The aspect of Session.mapper which is somewhat reduntant vs.  
declarative is that they both want to add an automatic  
__init__(**kwargs) method which assigns all given keyword values to  
the instance.They are not incompatible because Session.mapper only  
adds an __init__ if none is available already.


The final feature of Session.mapper which is more reasonable is the  
"query" attribute.   This feature allows you to say:


MyClass.query

as an equivalent for session.query(MyClass).

For that specific attribute, instead of using Session.mapper, its  
functionality has been exported into its own descriptor-producing  
method, like so:


class MyBaseClass(object):
query = Session.query_property()

So this is a way to get that one aspect without buying into the  
Session.mapper thing.



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[Zope-dev] Re: zope.sqlalchemy

2008-05-06 Thread Laurence Rowe

Martijn Faassen wrote:

Hey,

Laurence Rowe wrote:

See pypi or the readme for details, but briefly usage is something like:

>>> engine = create_engine('sqlite:///')
>>> Session = scoped_session(sessionmaker(
... bind=engine, transactional=True, autoflush=True,
... extension=ZopeTransactionExtension()))
>>> session = Session()
>>> session.save(User(name='bob'))
>>> transaction.commit()


One thing I understood from Christian Theune is that with scoped 
sessions, explicit session.save() is not always necessary. Since I see 
it being used here, could you perhaps comment on this?


Registering a mapper with Session.mapper would work with this extension, 
but I'm reluctant to recommend it for two reasons: I don't know how it 
works with the declarative plugin; and it necessarily limits mapped 
classes to a single Session and therefor a single engine. In a zope 
context I think it's quite likely that you could have the same classes 
mapped to different databases (i.e. two instances of a single application).


This is great news, also for megrok.rdb, which we started to develop at 
the Grokkerdam sprint.


I read somewhere on one of the blog planets that you had discussed 
container implementations. Any more information/code about this? I'm 
quite hopeful that Zope 2.12 will let us share much more code now that 
Acquisition is being tamed.


Laurence

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[Zope-dev] Re: [Repoze-dev] Somebody needs to talk at EuropPython.

2008-05-06 Thread Chris McDonough
I can't go either.  If anyone wanted to give a talk, they'd be welcome to use my 
repoze.zope2 slides at 
http://plope.com/static/presentations/repoze-zope2-pycon-2008.pdf (I also have 
it in Keynote format as necessary).


- C

Lennart Regebro wrote:

So, we need talks at EuropPython about both Repoze and Grok. I can't
go, but I want to make sure *somebody* does. :)
Hands up: Who is talking about Grok, and who talks about Repoze? :)

Other super-cool Zope technologies that should be talked about?



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[Zope-dev] Re: zope.sqlalchemy

2008-05-06 Thread Martijn Faassen

Martijn Faassen wrote:

Laurence Rowe wrote:
I've uploaded it to zope svn and pypi. See 
http://pypi.python.org/pypi/zope.sqlalchemy


And yet another setup.py comment: the 'url' section right now points to 
http://svn.zope.org/zope.sqlalchemy'. I'm not sure, but I thought we had 
a policy not to use our SVN as the homepage URL in setup.py. Comments 
from others please?


Regards,

Martijn

P.S. sorry for all the criticisms, they're intended to be constructive. 
I'm very excited this project is going ahead.



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[Zope-dev] Somebody needs to talk at EuropPython.

2008-05-06 Thread Lennart Regebro
So, we need talks at EuropPython about both Repoze and Grok. I can't
go, but I want to make sure *somebody* does. :)
Hands up: Who is talking about Grok, and who talks about Repoze? :)

Other super-cool Zope technologies that should be talked about?

-- 
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http://www.colliberty.com/
+33 661 58 14 64
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Re: [Zope-dev] zope.sqlalchemy

2008-05-06 Thread Brian Sutherland
On Tue, May 06, 2008 at 02:26:58AM +0100, Laurence Rowe wrote:
> Any comments appreciated.

It looks very, very good.

-- 
Brian Sutherland
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[Zope-dev] Re: zope.sqlalchemy

2008-05-06 Thread Martijn Faassen

Laurence Rowe wrote:
I've uploaded it to zope svn and pypi. See 
http://pypi.python.org/pypi/zope.sqlalchemy


Another comment:

Could you please use proper release numbers instead of the 0.1dev-r86482 
stuff?


And follow the official release procedure, which doesn't seem to be 
actually published on the web outside of grok.zope.org:


http://grok.zope.org/documentation/how-to/releasing-software

I realize that the package is very young, but I'm saying this for a 
reason; while doing it quickly seems convenience we've had a lot of 
troubles in the past building on such quick & dirty releases.


Regards,

Martijn

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Re: [Zope-dev] mysqldbda bloats zodb

2008-05-06 Thread Adam GROSZER
Silence is consent.
Fix is ready and tested. I'll go ahead and fix this.

Monday, May 5, 2008, 6:57:24 PM, you wrote:

AG> Hello,

AG> I'm digging again around rdb and friends.

AG> It seems now that mysqldbda bloats zodb in
AG> def _connection_factory(self):
AG> """Create a MySQLdb DBI connection based on the DSN"""
AG> ...
AG> self.__stringConverter =
AG> MySQLStringConverter(self.getEncoding())
AG> return connection
AG> on almost every request of us. That causes plenty of conflict errors I
AG> guess. But strangely we end up with
AG> ConnectionStateError: Shouldn't load state for 0x24 when the connection is 
closed
AG> (0x24 is the MySQLdbAdapter instance)

AG> So, I would move the assignment of __stringConverter to setEncoding
AG> where it belongs. (Change it only when the encoding changes).
AG> This seems to solve the above errors.

AG> Any objections?



-- 
Best regards,
 Adam GROSZERmailto:[EMAIL PROTECTED]
--
Quote of the day:
A professor is one who talks in someone else's sleep.

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[Zope-dev] Re: zope.sqlalchemy

2008-05-06 Thread Martijn Faassen

Hey,

Laurence Rowe wrote:

See pypi or the readme for details, but briefly usage is something like:

>>> engine = create_engine('sqlite:///')
>>> Session = scoped_session(sessionmaker(
... bind=engine, transactional=True, autoflush=True,
... extension=ZopeTransactionExtension()))
>>> session = Session()
>>> session.save(User(name='bob'))
>>> transaction.commit()


One thing I understood from Christian Theune is that with scoped 
sessions, explicit session.save() is not always necessary. Since I see 
it being used here, could you perhaps comment on this?


This is great news, also for megrok.rdb, which we started to develop at 
the Grokkerdam sprint.


Regards,

Martijn

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[Zope-dev] Zope Tests: 5 OK

2008-05-06 Thread Zope Tests Summarizer
Summary of messages to the zope-tests list.
Period Mon May  5 11:00:00 2008 UTC to Tue May  6 11:00:00 2008 UTC.
There were 5 messages: 5 from Zope Tests.


Tests passed OK
---

Subject: OK : Zope-2.8 Python-2.3.6 : Linux
From: Zope Tests
Date: Mon May  5 20:56:21 EDT 2008
URL: http://mail.zope.org/pipermail/zope-tests/2008-May/009505.html

Subject: OK : Zope-2.9 Python-2.4.4 : Linux
From: Zope Tests
Date: Mon May  5 20:57:51 EDT 2008
URL: http://mail.zope.org/pipermail/zope-tests/2008-May/009506.html

Subject: OK : Zope-2.10 Python-2.4.4 : Linux
From: Zope Tests
Date: Mon May  5 20:59:22 EDT 2008
URL: http://mail.zope.org/pipermail/zope-tests/2008-May/009507.html

Subject: OK : Zope-2.11 Python-2.4.4 : Linux
From: Zope Tests
Date: Mon May  5 21:00:52 EDT 2008
URL: http://mail.zope.org/pipermail/zope-tests/2008-May/009508.html

Subject: OK : Zope-trunk Python-2.4.4 : Linux
From: Zope Tests
Date: Mon May  5 21:02:23 EDT 2008
URL: http://mail.zope.org/pipermail/zope-tests/2008-May/009509.html

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