Re: [Zope] Need some help to get rid of an InvalidObjectReference exception
chaouche yacine wrote at 2008-8-20 05:21 -0700:
> ...
>Ok here's how I did to finally fix it :
>
>* create a new Transient Object Container (sessionTOC) at root
>* create a new Session Data Manager (sessionDM), with the following settings :
>** Id : sessionDM
>** Transient Object Container Path : /sessionTOC
>** Place SESSION in REQUEST object as : ZODBSESSION
>
>Now I can put ZODB objects in ZODBSESSION using something like :
>
>context.REQUEST.ZODBSESSION.set("object",o)
>
>Thanks to all of you for your precious help.
I already know that you have abandoned this approach already (good).
What you did: you have put the sessions into the main ZODB storage.
The ZODB can have the same persistent object at different places
in the persistent graph. *HOWEVER* Zope usually does not like
its (what I call site building) objects to be at different places.
This means, that templates and scripts behave quite differently
(their "container" changes and maybe their "context") dependent
on the location from which they have been fetched.
Do not put templates/scripts at secondary positions in the ZODB
(use just a single primary position). Use instead references (e.g. paths)
to the templates/scripts and resolve the references to the real objects.
--
Dieter
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Re: [Zope] Need some help to get rid of an InvalidObjectReference exception
chaouche yacine wrote at 2008-8-20 01:52 -0700:
> ...
>How do I know to which ZODB a specific object belongs to ?
A persistent object has the attribute "_p_jar".
This attribute is "None" when the object was not loaded from
the ZODB and otherwise, it is the ZODB connection which has loaded
it.
A ZODB connection has the method "db()" (or similar) which returns
the ZODB database this connection belongs to.
More details in the source ("ZODB.DB" and "ZODB.Connection").
--
Dieter
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Re: [Zope] Need some help to get rid of an InvalidObjectReference exception
> Yes this could be dangerous, but in my case these volatile > attributes need not to be in the cache for a very long time, > it's just a matter of 3 or 4 clicks in about half a > dozen of minutes. But yeah, I'll really have to be > careful about that, or to recreate them if they're gone > (hence the setattr and getattr to make sure there's > something in self._v_something and create one if > there's not) Ok, I changed my mind again ^_^. Volatile attributes are shared across multiple sessions, which is not acceptable for my application. So here's what I cam up with : * 1 : Do not store references to a ZODBish object into a non ZODBish object * And 2 : just pass the context as a parameter to all the non-ZODBish methods that need it. I Tried to avoid this in the first place (hence storing it as an attribute), but putting them in the session broke everything. Cheers. ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Need some help to get rid of an InvalidObjectReference exception
> You understand that _v_ attributes are only available in > the thread they > were created, and will disappear when the object leaves the > object > cache. > > If you manage to get a 2nd thread there will be nothing in > the _v_ > attribute, or wait 10 or so mins between requests... > > -- > Andrew Milton > [EMAIL PROTECTED] Yes this could be dangerous, but in my case these volatile attributes need not to be in the cache for a very long time, it's just a matter of 3 or 4 clicks in about half a dozen of minutes. But yeah, I'll really have to be careful about that, or to recreate them if they're gone (hence the setattr and getattr to make sure there's something in self._v_something and create one if there's not) ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Need some help to get rid of an InvalidObjectReference exception
+---[ chaouche yacine ]-- | | | Not exactly. I am instantiating non persistent objects that do have a reference to persistence objects in the form of an attribute, and then trying to cache those non persistent objects. | | Do the fact that these non persistent objects store a reference to persistent ones turn them into persistent ? I am curious to know. | | Anyway, I tried the volatile attribute thing (http://wiki.zope.org/ZODB/VolatileAttributes) and first tests look fine. You understand that _v_ attributes are only available in the thread they were created, and will disappear when the object leaves the object cache. If you manage to get a 2nd thread there will be nothing in the _v_ attribute, or wait 10 or so mins between requests... -- Andrew Milton [EMAIL PROTECTED] ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Need some help to get rid of an InvalidObjectReference exception
> Whatever you are doing, you are doing the "wrong
> thing".
>
> You are instantiating persistent objects and not storing
> them in the
> ZODB. This is going to cause your ZODB to grow, so you
> might as well
> store them.
>
> Otherwise you need to make non-persistent versions of the
> objects you
> are trying to 'cache' and use those instead.
>
> --
> Andrew Milton
> [EMAIL PROTECTED]
Not exactly. I am instantiating non persistent objects that do have a reference
to persistence objects in the form of an attribute, and then trying to cache
those non persistent objects.
Do the fact that these non persistent objects store a reference to persistent
ones turn them into persistent ? I am curious to know.
Anyway, I tried the volatile attribute thing
(http://wiki.zope.org/ZODB/VolatileAttributes) and first tests look fine.
This is how I did the trick :
===
ZODBLivinObject.py
===
from OFS.SimpleItem import SimpleItem
from NonZODBObject import NonZODBObject
class ZODBLivingObject(SimpleItem) :
"""
Hello, I live in the ZODB.
"""
meta_type = "ZODBish"
def __init__(self):
"""
"""
self.id = "ZODBish"
self.title = "ZODBish"
def sayHi(self):
"""
"""
# NonZODBObject stores a reference of self, a ZODB-living object.
nonZODBish = NonZODBObject(self)
# This line breaks everything. Comment it and every thing will be just
right.
# self.REQUEST.SESSION.set('breakish',nonZODBish)
self.setNonZODBish(nonZODBish)
# This can be seen in the console if runzope
print "it's me",nonZODBish.context
return nonZODBish.context
def setNonZODBish(self,p_nonZODBish):
"""
"""
setattr(self,'_v_NonZODBish',p_nonZODBish)
def getNonZODBish(self):
"""
"""
if not hasattr(self,"_v_NonZODBish"):
self.setNonZODBish(None)
return self._v_NonZODBish
And then I use the setNonZODBish et getNonZODBish methods to set and access the
cached value.
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Re: [Zope] Need some help to get rid of an InvalidObjectReference exception
+---[ chaouche yacine ]-- | > +---[ chaouche yacine ]-- | > | | > | Correct. I Quit... :( better not to store ZODB objects in | > the session and try to get some way around. | > | > So now you can go look at the Cache objects that Zope | > provides :-) | > | > -- | > Andrew Milton | > [EMAIL PROTECTED] | | If you are talking about RAM cache, HTTP cache etc., I don't know if they'll do the trick because, again, it's about caching objects that do not live in the ZODB, i.e I cannot go in the ZMI and click the cache tab on a python script or a page template because that's not what I am trying to do. | | But maybe there's the volatile attributes alternative, and that fails too then I have no choice but to do the caching mechanism myself... Whatever you are doing, you are doing the "wrong thing". You are instantiating persistent objects and not storing them in the ZODB. This is going to cause your ZODB to grow, so you might as well store them. Otherwise you need to make non-persistent versions of the objects you are trying to 'cache' and use those instead. -- Andrew Milton [EMAIL PROTECTED] ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Need some help to get rid of an InvalidObjectReference exception
> +---[ chaouche yacine ]-- > | > | Correct. I Quit... :( better not to store ZODB objects in > the session and try to get some way around. > > So now you can go look at the Cache objects that Zope > provides :-) > > -- > Andrew Milton > [EMAIL PROTECTED] If you are talking about RAM cache, HTTP cache etc., I don't know if they'll do the trick because, again, it's about caching objects that do not live in the ZODB, i.e I cannot go in the ZMI and click the cache tab on a python script or a page template because that's not what I am trying to do. But maybe there's the volatile attributes alternative, and that fails too then I have no choice but to do the caching mechanism myself... ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Need some help to get rid of an InvalidObjectReference exception
+---[ chaouche yacine ]-- | | Correct. I Quit... :( better not to store ZODB objects in the session and try to get some way around. So now you can go look at the Cache objects that Zope provides :-) -- Andrew Milton [EMAIL PROTECTED] ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Need some help to get rid of an InvalidObjectReference exception
--- On Wed, 8/20/08, Andrew Milton <[EMAIL PROTECTED]> wrote:
> From: Andrew Milton <[EMAIL PROTECTED]>
> Subject: Re: [Zope] Need some help to get rid of an InvalidObjectReference
> exception
> To: "chaouche yacine" <[EMAIL PROTECTED]>
> Cc: zope@zope.org
> Date: Wednesday, August 20, 2008, 5:27 AM
> +---[ chaouche yacine ]--
> |
> | Ok here's how I did to finally fix it :
> |
> | * create a new Transient Object Container (sessionTOC) at
> root
> | * create a new Session Data Manager (sessionDM), with the
> following settings :
> | ** Id : sessionDM
> | ** Transient Object Container Path : /sessionTOC
> | ** Place SESSION in REQUEST object as : ZODBSESSION
> |
> | Now I can put ZODB objects in ZODBSESSION using something
> like :
> |
> | context.REQUEST.ZODBSESSION.set("object",o)
> |
> | Thanks to all of you for your precious help.
>
> Your main ZODB will grow everytime you add or remove
> something in
> ZODBSESSION, you're essentially storing the same object
> twice in your
> ZODB.
>
> --
> Andrew Milton
> [EMAIL PROTECTED]
Correct. I Quit... :( better not to store ZODB objects in the session and try
to get some way around.
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Re: [Zope] Need some help to get rid of an InvalidObjectReference exception
+---[ chaouche yacine ]--
|
| Ok here's how I did to finally fix it :
|
| * create a new Transient Object Container (sessionTOC) at root
| * create a new Session Data Manager (sessionDM), with the following settings :
| ** Id : sessionDM
| ** Transient Object Container Path : /sessionTOC
| ** Place SESSION in REQUEST object as : ZODBSESSION
|
| Now I can put ZODB objects in ZODBSESSION using something like :
|
| context.REQUEST.ZODBSESSION.set("object",o)
|
| Thanks to all of you for your precious help.
Your main ZODB will grow everytime you add or remove something in
ZODBSESSION, you're essentially storing the same object twice in your
ZODB.
--
Andrew Milton
[EMAIL PROTECTED]
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Re: [Zope] Need some help to get rid of an InvalidObjectReference exception
--- On Wed, 8/20/08, chaouche yacine <[EMAIL PROTECTED]> wrote:
> From: chaouche yacine <[EMAIL PROTECTED]>
> Subject: Re: [Zope] Need some help to get rid of an InvalidObjectReference
> exception
> To: "Dieter Maurer" <[EMAIL PROTECTED]>
> Cc: zope@zope.org
> Date: Wednesday, August 20, 2008, 5:12 AM
> --- On Wed, 8/20/08, chaouche yacine
> <[EMAIL PROTECTED]> wrote:
> > So the question is now : is there another way to put
> some
> > ZODB objects in the session for future use ? because
> there
> > is no reason to create the same object twice or thrice
> in my
> > product so I want it to stay in the session.
> >
> > Thanks.
>
> Maybe I should try this :
> http://www.zope.org/Documentation/Books/ZopeBook/2_6Edition/Sessions.stx#3-126
>
>
>
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Ok here's how I did to finally fix it :
* create a new Transient Object Container (sessionTOC) at root
* create a new Session Data Manager (sessionDM), with the following settings :
** Id : sessionDM
** Transient Object Container Path : /sessionTOC
** Place SESSION in REQUEST object as : ZODBSESSION
Now I can put ZODB objects in ZODBSESSION using something like :
context.REQUEST.ZODBSESSION.set("object",o)
Thanks to all of you for your precious help.
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Re: [Zope] Need some help to get rid of an InvalidObjectReference exception
--- On Wed, 8/20/08, chaouche yacine <[EMAIL PROTECTED]> wrote: > So the question is now : is there another way to put some > ZODB objects in the session for future use ? because there > is no reason to create the same object twice or thrice in my > product so I want it to stay in the session. > > Thanks. Maybe I should try this : http://www.zope.org/Documentation/Books/ZopeBook/2_6Edition/Sessions.stx#3-126 ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Need some help to get rid of an InvalidObjectReference exception
+---[ chaouche yacine ]-- | | > As you see, I do not intentionally copy objects from one | > ZODB to another... Except maybe if the session has a | > separate storage and that this breaks everything. But then, | > I could not even use the _getCopy method because nonZODBish | > do not have a _p_jar attribute. SESSION does use its own store. -- Andrew Milton [EMAIL PROTECTED] ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Need some help to get rid of an InvalidObjectReference exception
--- On Wed, 8/20/08, chaouche yacine <[EMAIL PROTECTED]> wrote:
> From: chaouche yacine <[EMAIL PROTECTED]>
> Subject: Re: [Zope] Need some help to get rid of an InvalidObjectReference
> exception
> To: "Dieter Maurer" <[EMAIL PROTECTED]>
> Cc: zope@zope.org
> Date: Wednesday, August 20, 2008, 3:22 AM
> --- On Tue, 8/19/08, Dieter Maurer
> <[EMAIL PROTECTED]> wrote:
>
> > From: Dieter Maurer <[EMAIL PROTECTED]>
> > Subject: Re: [Zope] Need some help to get rid of an
> InvalidObjectReference exception
> > To: [EMAIL PROTECTED]
> > Cc: zope@zope.org
> > Date: Tuesday, August 19, 2008, 11:16 AM
> > chaouche yacine wrote at 2008-8-18 09:50 -0700:
> > >Need some help to get rid of an
> InvalidObjectReference
> > exception
> > >In my zope product, when I try to put some
> specific
> > object in the session, I get this :
> > >
> > >2008-08-18T14:51:02 ERROR(200) SiteError
> >
> http://www.afdas.com:8091/noyauafdas/tests/testAdresses
> > >Traceback (most recent call last):
> > > File
> >
> "/opt/Zope-2.7/lib/python/ZPublisher/Publish.py",
> > line 107, in publish
> > >transactions_manager.commit()
> > > File
> >
> "/opt/Zope-2.7/lib/python/Zope/App/startup.py",
> > line 222, in commit
> > >get_transaction().commit()
> > > File
> >
> "/opt/Zope-2.7/lib/python/ZODB/Transaction.py",
> > line 241, in commit
> > >ncommitted += self._commit_objects(objects)
> > > File
> >
> "/opt/Zope-2.7/lib/python/ZODB/Transaction.py",
> > line 356, in _commit_objects
> > >jar.commit(o, self)
> > > File
> >
> "/opt/Zope-2.7/lib/python/ZODB/Connection.py",
> > line 452, in commit
> > >dump(state)
> > >InvalidObjectReference: Attempt to store an object
> from
> > a foreign database connection
> >
> > A given persistent object can only be in one (ZODB-)
> > database, not in several
> > databases at the same time.
> >
> > You must copy the persistent object, when you want it
> to be
> > stored
> > (also) in another (ZODB-) database.
> >
> > You can use the "_getCopy(destination)"
> method to
> > create such
> > a copy. "_getCopy" is defined by
> > "OFS.CopySupport.CopySource" inherited
> > by most Zope objects.
> >
> >
> >
> > --
> > Dieter
>
> I narrowed the code to what is necessary to fire this
> exception, and here is the tarball for those who want to
> test it live
> http://yacinechaouche.googlepages.com/InvalidObjectReferenceExample.tgz
>
> This is the directory contents :
>
> + InvalidObjectReferenceExample
> \_ __init__.py
> \_ NonZODBObject.py
> \_+ zmi
> \_ ZODBLivingObjectAddForm.pt
> \_ ZODBLivingObject.py
>
>
> NonZODBObject.py
>
> class NonZODBObject:
> """
> Hello, i do not live in the ZODB
> """
>
> def __init__(self,p_context):
> """
> """
> # This is the evil line.
> self.context = p_context
>
> ===
> ZODBLivingObject.py
> ===
> from OFS.SimpleItem import SimpleItem
> from NonZODBObject import NonZODBObject
>
>
> class ZODBLivingObject(SimpleItem) :
> """
> Hello, I live in the ZODB.
> """
> meta_type = "ZODBish"
> def __init__(self):
> """
> """
> self.id = "ZODBish"
> self.title = "ZODBish"
>
> def breakEverything(self):
> """
> """
> nonZODBish = NonZODBObject(self)
> # This line breaks everything.
>
> self.REQUEST.SESSION.set('breakish',nonZODBish)
> # This can be seen in the console if runzope
> print "it's me",nonZODBish.context
> return nonZODBish.context
>
>
>
> __init__.py contains the code necessary to create a ZODBish
> in the ZODB through the ZMI
> zmi contains the form that adds a ZODBish through the ZMI
>
> As you see, I do not intentionally copy objects from one
> ZODB to another... Except maybe if the session has a
> separate storage and that this breaks everything. But then,
> I could not even use the _getCopy method because nonZODBish
> do not have a _p_jar attribute.
>
> Any help or comment would be appreciated .
No, I got it all wrong, it is much simpler than that : I cannot put any ZODB
living object into the session, be it a python script, a page template,
anything... this is not product specific.
So the question is now : is there another way to put some ZODB objects in the
session for future use ? because there is no reason to create the same object
twice or thrice in my product so I want it to stay in the session.
Thanks.
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Re: [Zope] Need some help to get rid of an InvalidObjectReference exception
--- On Tue, 8/19/08, Dieter Maurer <[EMAIL PROTECTED]> wrote:
> From: Dieter Maurer <[EMAIL PROTECTED]>
> Subject: Re: [Zope] Need some help to get rid of an InvalidObjectReference
> exception
> To: [EMAIL PROTECTED]
> Cc: zope@zope.org
> Date: Tuesday, August 19, 2008, 11:16 AM
> chaouche yacine wrote at 2008-8-18 09:50 -0700:
> >Need some help to get rid of an InvalidObjectReference
> exception
> >In my zope product, when I try to put some specific
> object in the session, I get this :
> >
> >2008-08-18T14:51:02 ERROR(200) SiteError
> http://www.afdas.com:8091/noyauafdas/tests/testAdresses
> >Traceback (most recent call last):
> > File
> "/opt/Zope-2.7/lib/python/ZPublisher/Publish.py",
> line 107, in publish
> >transactions_manager.commit()
> > File
> "/opt/Zope-2.7/lib/python/Zope/App/startup.py",
> line 222, in commit
> >get_transaction().commit()
> > File
> "/opt/Zope-2.7/lib/python/ZODB/Transaction.py",
> line 241, in commit
> >ncommitted += self._commit_objects(objects)
> > File
> "/opt/Zope-2.7/lib/python/ZODB/Transaction.py",
> line 356, in _commit_objects
> >jar.commit(o, self)
> > File
> "/opt/Zope-2.7/lib/python/ZODB/Connection.py",
> line 452, in commit
> >dump(state)
> >InvalidObjectReference: Attempt to store an object from
> a foreign database connection
>
> A given persistent object can only be in one (ZODB-)
> database, not in several
> databases at the same time.
>
> You must copy the persistent object, when you want it to be
> stored
> (also) in another (ZODB-) database.
>
> You can use the "_getCopy(destination)" method to
> create such
> a copy. "_getCopy" is defined by
> "OFS.CopySupport.CopySource" inherited
> by most Zope objects.
>
>
>
> --
> Dieter
I narrowed the code to what is necessary to fire this exception, and here is
the tarball for those who want to test it live
http://yacinechaouche.googlepages.com/InvalidObjectReferenceExample.tgz
This is the directory contents :
+ InvalidObjectReferenceExample
\_ __init__.py
\_ NonZODBObject.py
\_+ zmi
\_ ZODBLivingObjectAddForm.pt
\_ ZODBLivingObject.py
NonZODBObject.py
class NonZODBObject:
"""
Hello, i do not live in the ZODB
"""
def __init__(self,p_context):
"""
"""
# This is the evil line.
self.context = p_context
===
ZODBLivingObject.py
===
from OFS.SimpleItem import SimpleItem
from NonZODBObject import NonZODBObject
class ZODBLivingObject(SimpleItem) :
"""
Hello, I live in the ZODB.
"""
meta_type = "ZODBish"
def __init__(self):
"""
"""
self.id = "ZODBish"
self.title = "ZODBish"
def breakEverything(self):
"""
"""
nonZODBish = NonZODBObject(self)
# This line breaks everything.
self.REQUEST.SESSION.set('breakish',nonZODBish)
# This can be seen in the console if runzope
print "it's me",nonZODBish.context
return nonZODBish.context
__init__.py contains the code necessary to create a ZODBish in the ZODB through
the ZMI
zmi contains the form that adds a ZODBish through the ZMI
As you see, I do not intentionally copy objects from one ZODB to another...
Except maybe if the session has a separate storage and that this breaks
everything. But then, I could not even use the _getCopy method because
nonZODBish do not have a _p_jar attribute.
Any help or comment would be appreciated .
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Re: [Zope] Need some help to get rid of an InvalidObjectReference exception
> >Need some help to get rid of an InvalidObjectReference > exception > >In my zope product, when I try to put some specific > object in the session, I get this : > > > >2008-08-18T14:51:02 ERROR(200) SiteError > http://www.afdas.com:8091/noyauafdas/tests/testAdresses > >Traceback (most recent call last): > > File > "/opt/Zope-2.7/lib/python/ZPublisher/Publish.py", > line 107, in publish > >transactions_manager.commit() > > File > "/opt/Zope-2.7/lib/python/Zope/App/startup.py", > line 222, in commit > >get_transaction().commit() > > File > "/opt/Zope-2.7/lib/python/ZODB/Transaction.py", > line 241, in commit > >ncommitted += self._commit_objects(objects) > > File > "/opt/Zope-2.7/lib/python/ZODB/Transaction.py", > line 356, in _commit_objects > >jar.commit(o, self) > > File > "/opt/Zope-2.7/lib/python/ZODB/Connection.py", > line 452, in commit > >dump(state) > >InvalidObjectReference: Attempt to store an object from > a foreign database connection > > A given persistent object can only be in one (ZODB-) > database, not in several > databases at the same time. > > You must copy the persistent object, when you want it to be > stored > (also) in another (ZODB-) database. > > You can use the "_getCopy(destination)" method to > create such > a copy. "_getCopy" is defined by > "OFS.CopySupport.CopySource" inherited > by most Zope objects. > > > > -- > Dieter Well if it is the case, I didn't do it on purpose because I didn't use any specific ZODB code to copy objects on different ZODBs. How do I know to which ZODB a specific object belongs to ? ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Need some help to get rid of an InvalidObjectReference exception
chaouche yacine wrote at 2008-8-18 09:50 -0700: >Need some help to get rid of an InvalidObjectReference exception >In my zope product, when I try to put some specific object in the session, I >get this : > >2008-08-18T14:51:02 ERROR(200) SiteError >http://www.afdas.com:8091/noyauafdas/tests/testAdresses >Traceback (most recent call last): > File "/opt/Zope-2.7/lib/python/ZPublisher/Publish.py", line 107, in publish >transactions_manager.commit() > File "/opt/Zope-2.7/lib/python/Zope/App/startup.py", line 222, in commit >get_transaction().commit() > File "/opt/Zope-2.7/lib/python/ZODB/Transaction.py", line 241, in commit >ncommitted += self._commit_objects(objects) > File "/opt/Zope-2.7/lib/python/ZODB/Transaction.py", line 356, in > _commit_objects >jar.commit(o, self) > File "/opt/Zope-2.7/lib/python/ZODB/Connection.py", line 452, in commit >dump(state) >InvalidObjectReference: Attempt to store an object from a foreign database >connection A given persistent object can only be in one (ZODB-) database, not in several databases at the same time. You must copy the persistent object, when you want it to be stored (also) in another (ZODB-) database. You can use the "_getCopy(destination)" method to create such a copy. "_getCopy" is defined by "OFS.CopySupport.CopySource" inherited by most Zope objects. -- Dieter ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
