Re: [Zope3-Users] adding indexes in a __init__ method
Hi Darryl El mié, 26-07-2006 a las 00:48 +1200, Darryl Cousins escribió: > Hi Lorenzo, > > Cool. Where is the `contained` imported from? There is some magic there > because I couldn't get the test to work when creating the FieldIndex in > your createIndexes method without it. from zope.app.container.contained import contained Regards Lorenzo ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] adding indexes in a __init__ method
Hi Lorenzo, Cool. Where is the `contained` imported from? There is some magic there because I couldn't get the test to work when creating the FieldIndex in your createIndexes method without it. Thanks, Darryl On Tue, 2006-07-25 at 13:55 +0200, Lorenzo Gil Sanchez wrote: > Hi Darryl, > > this is how I ended implementing it: > > ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] adding indexes in a __init__ method
Hi Darryl,
this is how I ended implementing it:
class FilterableContainer(BTreeContainer):
implements(IFilterableContainer)
def __init__(self, catalog=None):
super(FilterableContainer, self).__init__()
self.catalog = contained(LocalCatalog(), self, 'catalog')
def createIndexes(self):
self.catalog['attr1'] = FieldIndex('attr1')
self.catalog['attr2'] = FieldIndex('attr2')
def onFilterableContainerAdded(obj, event):
if IFilterableContainer.providedBy(obj):
obj.createIndexes()
Thanks a lot for your help and suggestions!
Lorenzo
El mar, 25-07-2006 a las 22:38 +1200, Darryl Cousins escribió:
> Hi Lorenzo,
>
> I got this test to work::
>
> >>> class TestField(Persistent):
> ... pass
>
> >>> class TestCase(Persistent):
> ... def __init__(self):
> ... self.fieldkey = KeyReferenceToPersistent(TestField())
>
> >>> t = TestCase()
> Traceback (most recent call last):
> ...
> NotYet:...
>
> >>> class TestCaseTwo(Persistent):
> ... def __init__(self):
> ... self.field = TestField()
> ... def initfield(self):
> ... self.fieldkey = KeyReferenceToPersistent(self.field)
> ... del(self.field)
>
> >>> t = TestCaseTwo()
> >>> tc = root['t'] = t
>
> >>> transaction.commit()
> >>> tc.initfield()
> >>> print tc.field
> Traceback (most recent call last):
> ...
> AttributeError:...
>
> (Set up for test is shown in
>
> Which would mean that if you created the FieldIndex in __init__ and the
> catalog[key] part in the initialization handler then it should work.
>
> I put the del(self.field) bit in as a test in case you don't want that
> attribute unecessarily hanging around.
>
> Hope **that** helps.
>
> Regards,
> Darryl
>
> On Tue, 2006-07-25 at 12:24 +0200, Lorenzo Gil Sanchez wrote:
> > No worries, in fact I actually tried the same aproach and hit the same
> > problem
> >
> > Thanks anyway
> >
> > Lorenzo
> >
> > El mar, 25-07-2006 a las 22:16 +1200, Darryl Cousins escribió:
> > > Hi again,
> > >
> > > I was a too hasty. Because it is the FieldIndex that is missing the
> > > _p_oid attribute, and the fix I offered is for the container. Sorry
> > > about that.
> > >
> > > I need more thinking.
> > >
> > > Regards,
> > > Darryl
> > >
> > >
> > > On Tue, 2006-07-25 at 22:10 +1200, Darryl Cousins wrote:
> > > > Hi Lorenzo,
> > > >
> > > > The key reference adapter can only get a key reference **after** the
> > > > object is added to the database (because it uses _p_oid).
> > > >
> > > > The problem could be fixed with a subscriber to IObjectAddedEvent::
> > > >
> > > > def FilterableContainerInitializationHandler(object, event):
> > > > """Initialize container after its ObjectAddedEvent."""
> > > >
> > > > # I have checks here too (maybe unecessary)
> > > > if not IObjectAddedEvent.providedBy(event):
> > > > return
> > > > if not IFilterableContainer.providedBy(object):
> > > > return
> > > > # whatever needs to be done
> > > > # self._catalog ...
> > > >
> > > > This handler is configured::
> > > >
> > > >
> > > >> > > for=".IFilterableContainer
> > > > zope.app.container.interfaces.IObjectAddedEvent"
> > > > handler=".subscribers.FilterableContainerInitializationHandler"
> > > > />
> > > >
> > > > Hope that helps.
> > > >
> > > > Best regards,
> > > > Darryl
> > > >
> > > > On Tue, 2006-07-25 at 11:26 +0200, Lorenzo Gil Sanchez wrote:
> > > > > Hi,
> > > > >
> > > > > I have a special Folder content. When an instance of this class is
> > > > > created I want to create a catalog and an index in its __init__
> > > > > method.
> > > > > Something like:
> > > > >
> > > > > class FilterableContainer(BTreeContainer):
> > > > >
> > > > > implements(IFilterableContainer)
> > > > >
> > > > > def __init__(self):
> > > > > super(FilterableContainer, self).__init__()
> > > > > self._catalog = LocalCatalog()
> > > > > self._catalog['attr1'] = FieldIndex(field_name='attr1')
> > > > >
> > > > > where LocalCatalog is a subclass of Catalog that only indexes objects
> > > > > that belong to its parent.
> > > > >
> > > > > The problem arises when I add my FieldIndex to my internal catalog.
> > > > > Some
> > > > > events are triggered and at the end I got this exception:
> > > > >
> > > > > File
> > > > > "/opt/Zope-3.2.1/lib/python/zope/app/keyreference/persistent.py",
> > > > > line 41, in __init__
> > > > > raise zope.app.keyreference.interfaces.NotYet(object)
> > > > > NotYet:
> > > > >
> > > > >
> > > > > It happens because the key reference adaptor to Persistent thinks my
> > > > > FieldIndex object is already stored in the database, which is not the
> > > > > case.
> > > > >
> > > > > Anybody knows how should I add an index to my catalog in the __init__
>
Re: [Zope3-Users] adding indexes in a __init__ method
Hi All, I was thinking about that del(self.field) that I threw in. Wouldn't that remove the object too and therefore the key reference? Apparently not (in the test anyway):: >>> class TestField(Persistent): ... id = u'' ... def __init__(self, id): ... self.id = id >>> class TestCaseTwo(Persistent): ... def __init__(self): ... self.field = TestField(id=u'test case two') ... def initfield(self): ... self.fieldkey = KeyReferenceToPersistent(self.field) ... del(self.field) >>> t = TestCaseTwo() >>> tc = root['t'] = t >>> transaction.commit() >>> tc.initfield() >>> print tc.field Traceback (most recent call last): ... AttributeError:... >>> print tc.fieldkey().id test case two >>> transaction.commit() >>> print tc.fieldkey().id # I thought this would fail test case two Best regards, Darryl ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] adding indexes in a __init__ method
Hi Lorenzo, I got this test to work:: >>> class TestField(Persistent): ... pass >>> class TestCase(Persistent): ... def __init__(self): ... self.fieldkey = KeyReferenceToPersistent(TestField()) >>> t = TestCase() Traceback (most recent call last): ... NotYet:... >>> class TestCaseTwo(Persistent): ... def __init__(self): ... self.field = TestField() ... def initfield(self): ... self.fieldkey = KeyReferenceToPersistent(self.field) ... del(self.field) >>> t = TestCaseTwo() >>> tc = root['t'] = t >>> transaction.commit() >>> tc.initfield() >>> print tc.field Traceback (most recent call last): ... AttributeError:... (Set up for test is shown in Which would mean that if you created the FieldIndex in __init__ and the catalog[key] part in the initialization handler then it should work. I put the del(self.field) bit in as a test in case you don't want that attribute unecessarily hanging around. Hope **that** helps. Regards, Darryl On Tue, 2006-07-25 at 12:24 +0200, Lorenzo Gil Sanchez wrote: > No worries, in fact I actually tried the same aproach and hit the same > problem > > Thanks anyway > > Lorenzo > > El mar, 25-07-2006 a las 22:16 +1200, Darryl Cousins escribió: > > Hi again, > > > > I was a too hasty. Because it is the FieldIndex that is missing the > > _p_oid attribute, and the fix I offered is for the container. Sorry > > about that. > > > > I need more thinking. > > > > Regards, > > Darryl > > > > > > On Tue, 2006-07-25 at 22:10 +1200, Darryl Cousins wrote: > > > Hi Lorenzo, > > > > > > The key reference adapter can only get a key reference **after** the > > > object is added to the database (because it uses _p_oid). > > > > > > The problem could be fixed with a subscriber to IObjectAddedEvent:: > > > > > > def FilterableContainerInitializationHandler(object, event): > > > """Initialize container after its ObjectAddedEvent.""" > > > > > > # I have checks here too (maybe unecessary) > > > if not IObjectAddedEvent.providedBy(event): > > > return > > > if not IFilterableContainer.providedBy(object): > > > return > > > # whatever needs to be done > > > # self._catalog ... > > > > > > This handler is configured:: > > > > > > > > >> > for=".IFilterableContainer > > > zope.app.container.interfaces.IObjectAddedEvent" > > > handler=".subscribers.FilterableContainerInitializationHandler" > > > /> > > > > > > Hope that helps. > > > > > > Best regards, > > > Darryl > > > > > > On Tue, 2006-07-25 at 11:26 +0200, Lorenzo Gil Sanchez wrote: > > > > Hi, > > > > > > > > I have a special Folder content. When an instance of this class is > > > > created I want to create a catalog and an index in its __init__ method. > > > > Something like: > > > > > > > > class FilterableContainer(BTreeContainer): > > > > > > > > implements(IFilterableContainer) > > > > > > > > def __init__(self): > > > > super(FilterableContainer, self).__init__() > > > > self._catalog = LocalCatalog() > > > > self._catalog['attr1'] = FieldIndex(field_name='attr1') > > > > > > > > where LocalCatalog is a subclass of Catalog that only indexes objects > > > > that belong to its parent. > > > > > > > > The problem arises when I add my FieldIndex to my internal catalog. Some > > > > events are triggered and at the end I got this exception: > > > > > > > > File "/opt/Zope-3.2.1/lib/python/zope/app/keyreference/persistent.py", > > > > line 41, in __init__ > > > > raise zope.app.keyreference.interfaces.NotYet(object) > > > > NotYet: > > > > > > > > > > > > It happens because the key reference adaptor to Persistent thinks my > > > > FieldIndex object is already stored in the database, which is not the > > > > case. > > > > > > > > Anybody knows how should I add an index to my catalog in the __init__ > > > > method? > > > > > > > > Thanks in advance > > > > > > > > Lorenzo > > > > > > > > ___ > > > > Zope3-users mailing list > > > > Zope3-users@zope.org > > > > http://mail.zope.org/mailman/listinfo/zope3-users > > > > > > ___ > > > Zope3-users mailing list > > > Zope3-users@zope.org > > > http://mail.zope.org/mailman/listinfo/zope3-users > > > > ___ > Zope3-users mailing list > Zope3-users@zope.org > http://mail.zope.org/mailman/listinfo/zope3-users ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] adding indexes in a __init__ method
No worries, in fact I actually tried the same aproach and hit the same problem Thanks anyway Lorenzo El mar, 25-07-2006 a las 22:16 +1200, Darryl Cousins escribió: > Hi again, > > I was a too hasty. Because it is the FieldIndex that is missing the > _p_oid attribute, and the fix I offered is for the container. Sorry > about that. > > I need more thinking. > > Regards, > Darryl > > > On Tue, 2006-07-25 at 22:10 +1200, Darryl Cousins wrote: > > Hi Lorenzo, > > > > The key reference adapter can only get a key reference **after** the > > object is added to the database (because it uses _p_oid). > > > > The problem could be fixed with a subscriber to IObjectAddedEvent:: > > > > def FilterableContainerInitializationHandler(object, event): > > """Initialize container after its ObjectAddedEvent.""" > > > > # I have checks here too (maybe unecessary) > > if not IObjectAddedEvent.providedBy(event): > > return > > if not IFilterableContainer.providedBy(object): > > return > > # whatever needs to be done > > # self._catalog ... > > > > This handler is configured:: > > > > > >> for=".IFilterableContainer > > zope.app.container.interfaces.IObjectAddedEvent" > > handler=".subscribers.FilterableContainerInitializationHandler" > > /> > > > > Hope that helps. > > > > Best regards, > > Darryl > > > > On Tue, 2006-07-25 at 11:26 +0200, Lorenzo Gil Sanchez wrote: > > > Hi, > > > > > > I have a special Folder content. When an instance of this class is > > > created I want to create a catalog and an index in its __init__ method. > > > Something like: > > > > > > class FilterableContainer(BTreeContainer): > > > > > > implements(IFilterableContainer) > > > > > > def __init__(self): > > > super(FilterableContainer, self).__init__() > > > self._catalog = LocalCatalog() > > > self._catalog['attr1'] = FieldIndex(field_name='attr1') > > > > > > where LocalCatalog is a subclass of Catalog that only indexes objects > > > that belong to its parent. > > > > > > The problem arises when I add my FieldIndex to my internal catalog. Some > > > events are triggered and at the end I got this exception: > > > > > > File "/opt/Zope-3.2.1/lib/python/zope/app/keyreference/persistent.py", > > > line 41, in __init__ > > > raise zope.app.keyreference.interfaces.NotYet(object) > > > NotYet: > > > > > > > > > It happens because the key reference adaptor to Persistent thinks my > > > FieldIndex object is already stored in the database, which is not the > > > case. > > > > > > Anybody knows how should I add an index to my catalog in the __init__ > > > method? > > > > > > Thanks in advance > > > > > > Lorenzo > > > > > > ___ > > > Zope3-users mailing list > > > Zope3-users@zope.org > > > http://mail.zope.org/mailman/listinfo/zope3-users > > > > ___ > > Zope3-users mailing list > > Zope3-users@zope.org > > http://mail.zope.org/mailman/listinfo/zope3-users > ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] adding indexes in a __init__ method
Hi again, I was a too hasty. Because it is the FieldIndex that is missing the _p_oid attribute, and the fix I offered is for the container. Sorry about that. I need more thinking. Regards, Darryl On Tue, 2006-07-25 at 22:10 +1200, Darryl Cousins wrote: > Hi Lorenzo, > > The key reference adapter can only get a key reference **after** the > object is added to the database (because it uses _p_oid). > > The problem could be fixed with a subscriber to IObjectAddedEvent:: > > def FilterableContainerInitializationHandler(object, event): > """Initialize container after its ObjectAddedEvent.""" > > # I have checks here too (maybe unecessary) > if not IObjectAddedEvent.providedBy(event): > return > if not IFilterableContainer.providedBy(object): > return > # whatever needs to be done > # self._catalog ... > > This handler is configured:: > > >for=".IFilterableContainer > zope.app.container.interfaces.IObjectAddedEvent" > handler=".subscribers.FilterableContainerInitializationHandler" > /> > > Hope that helps. > > Best regards, > Darryl > > On Tue, 2006-07-25 at 11:26 +0200, Lorenzo Gil Sanchez wrote: > > Hi, > > > > I have a special Folder content. When an instance of this class is > > created I want to create a catalog and an index in its __init__ method. > > Something like: > > > > class FilterableContainer(BTreeContainer): > > > > implements(IFilterableContainer) > > > > def __init__(self): > > super(FilterableContainer, self).__init__() > > self._catalog = LocalCatalog() > > self._catalog['attr1'] = FieldIndex(field_name='attr1') > > > > where LocalCatalog is a subclass of Catalog that only indexes objects > > that belong to its parent. > > > > The problem arises when I add my FieldIndex to my internal catalog. Some > > events are triggered and at the end I got this exception: > > > > File "/opt/Zope-3.2.1/lib/python/zope/app/keyreference/persistent.py", > > line 41, in __init__ > > raise zope.app.keyreference.interfaces.NotYet(object) > > NotYet: > > > > > > It happens because the key reference adaptor to Persistent thinks my > > FieldIndex object is already stored in the database, which is not the > > case. > > > > Anybody knows how should I add an index to my catalog in the __init__ > > method? > > > > Thanks in advance > > > > Lorenzo > > > > ___ > > Zope3-users mailing list > > Zope3-users@zope.org > > http://mail.zope.org/mailman/listinfo/zope3-users > > ___ > Zope3-users mailing list > Zope3-users@zope.org > http://mail.zope.org/mailman/listinfo/zope3-users ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] adding indexes in a __init__ method
Hi Lorenzo, The key reference adapter can only get a key reference **after** the object is added to the database (because it uses _p_oid). The problem could be fixed with a subscriber to IObjectAddedEvent:: def FilterableContainerInitializationHandler(object, event): """Initialize container after its ObjectAddedEvent.""" # I have checks here too (maybe unecessary) if not IObjectAddedEvent.providedBy(event): return if not IFilterableContainer.providedBy(object): return # whatever needs to be done # self._catalog ... This handler is configured:: Hope that helps. Best regards, Darryl On Tue, 2006-07-25 at 11:26 +0200, Lorenzo Gil Sanchez wrote: > Hi, > > I have a special Folder content. When an instance of this class is > created I want to create a catalog and an index in its __init__ method. > Something like: > > class FilterableContainer(BTreeContainer): > > implements(IFilterableContainer) > > def __init__(self): > super(FilterableContainer, self).__init__() > self._catalog = LocalCatalog() > self._catalog['attr1'] = FieldIndex(field_name='attr1') > > where LocalCatalog is a subclass of Catalog that only indexes objects > that belong to its parent. > > The problem arises when I add my FieldIndex to my internal catalog. Some > events are triggered and at the end I got this exception: > > File "/opt/Zope-3.2.1/lib/python/zope/app/keyreference/persistent.py", > line 41, in __init__ > raise zope.app.keyreference.interfaces.NotYet(object) > NotYet: > > > It happens because the key reference adaptor to Persistent thinks my > FieldIndex object is already stored in the database, which is not the > case. > > Anybody knows how should I add an index to my catalog in the __init__ > method? > > Thanks in advance > > Lorenzo > > ___ > Zope3-users mailing list > Zope3-users@zope.org > http://mail.zope.org/mailman/listinfo/zope3-users ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
