Eclipse Community Forums: EMF » [CDO] Notification#getOldValue always null?

Home » Modeling » EMF » [CDO] Notification#getOldValue always null?

[CDO] Notification#getOldValue always null? [message #769644]

Thu, 22 December 2011 08:07

Eclipse User

Hi All,

I'm observing that when I add an Adapter to an object and then somewhere
else change the change the value of a reference from one object to
another, that the notification that comes to my adapter always has
getOldValue() as null. Identifying the newValue and the notifier works fine.

I am observing the changed object as retrieved through a CDOView with:

view.options().addChangeSubscriptionPolicy(CDOAdapterPolicy.ALL);

I am setting the reference in a CDOTransaction in the same VM.
The adapters view has already loaded the object being adapted as well as
the old and new reference objects.

Is this expected? Perhaps this is something I need to configure? I need
the old value in order to perform some fine-grained updates on a JFace
Viewer.

Thanks,
Dan

Re: [CDO] Notification#getOldValue always null? [message #769653 is a reply to message #769644]

Thu, 22 December 2011 08:27

Eclipse User

Does
CDOView.Options.setInvalidationPolicy(CDOInvalidationPolicy.RELAXED) help?

Tom

Am 22.12.11 14:07, schrieb Dan Pollitt:
> Hi All,
>
> I'm observing that when I add an Adapter to an object and then somewhere
> else change the change the value of a reference from one object to
> another, that the notification that comes to my adapter always has
> getOldValue() as null. Identifying the newValue and the notifier works
> fine.
>
> I am observing the changed object as retrieved through a CDOView with:
>
> view.options().addChangeSubscriptionPolicy(CDOAdapterPolicy.ALL);
>
> I am setting the reference in a CDOTransaction in the same VM.
> The adapters view has already loaded the object being adapted as well as
> the old and new reference objects.
>
> Is this expected? Perhaps this is something I need to configure? I need
> the old value in order to perform some fine-grained updates on a JFace
> Viewer.
>
> Thanks,
> Dan

Re: [CDO] Notification#getOldValue always null? [message #769660 is a reply to message #769653]

Thu, 22 December 2011 08:46

Eclipse User

No - looks to behave in the same way. I also tried setting on the session:

((org.eclipse.emf.cdo.net4j.CDOSession.Options) session.options())
.setPassiveUpdateMode(PassiveUpdateMode.CHANGES);

That didn't seem to change the observed behaviour either.

I'm using org.eclipse.emf.cdo version 4.0.1.v20110831-1303

Dan

On 22/12/2011 13:27, Tom Schindl wrote:
> Does
> CDOView.Options.setInvalidationPolicy(CDOInvalidationPolicy.RELAXED) help?
>
> Tom
>
> Am 22.12.11 14:07, schrieb Dan Pollitt:
>> Hi All,
>>
>> I'm observing that when I add an Adapter to an object and then somewhere
>> else change the change the value of a reference from one object to
>> another, that the notification that comes to my adapter always has
>> getOldValue() as null. Identifying the newValue and the notifier works
>> fine.
>>
>> I am observing the changed object as retrieved through a CDOView with:
>>
>> view.options().addChangeSubscriptionPolicy(CDOAdapterPolicy.ALL);
>>
>> I am setting the reference in a CDOTransaction in the same VM.
>> The adapters view has already loaded the object being adapted as well as
>> the old and new reference objects.
>>
>> Is this expected? Perhaps this is something I need to configure? I need
>> the old value in order to perform some fine-grained updates on a JFace
>> Viewer.
>>
>> Thanks,
>> Dan
>

Re: [CDO] Notification#getOldValue always null? [message #772257 is a reply to message #769644]

Thu, 29 December 2011 06:05

Eclipse User

Hi Dan,

Can you please submit a bugzilla?

Cheers
/Eike

----
http://www.esc-net.de
http://thegordian.blogspot.com
http://twitter.com/eikestepper

Am 22.12.2011 14:07, schrieb Dan Pollitt:
> Hi All,
>
> I'm observing that when I add an Adapter to an object and then somewhere else change the change the value of a
> reference from one object to another, that the notification that comes to my adapter always has getOldValue() as null.
> Identifying the newValue and the notifier works fine.
>
> I am observing the changed object as retrieved through a CDOView with:
>
> view.options().addChangeSubscriptionPolicy(CDOAdapterPolicy.ALL);
>
> I am setting the reference in a CDOTransaction in the same VM.
> The adapters view has already loaded the object being adapted as well as the old and new reference objects.
>
> Is this expected? Perhaps this is something I need to configure? I need the old value in order to perform some
> fine-grained updates on a JFace Viewer.
>
> Thanks,
> Dan

Re: [CDO] Notification#getOldValue always null? [message #774142 is a reply to message #772257]

Tue, 03 January 2012 05:55

Eclipse User

Hi Eike,

Happy New Year, just to confirm I raised
https://bugs.eclipse.org/bugs/show_bug.cgi?id=367738 for this

Thanks,
Dan

On 29/12/2011 11:05, Eike Stepper wrote:
> Hi Dan,
>
> Can you please submit a bugzilla?
>
> Cheers
> /Eike
>
> ----
> http://www.esc-net.de
> http://thegordian.blogspot.com
> http://twitter.com/eikestepper
>
>
>
> Am 22.12.2011 14:07, schrieb Dan Pollitt:
>> Hi All,
>>
>> I'm observing that when I add an Adapter to an object and then
>> somewhere else change the change the value of a reference from one
>> object to another, that the notification that comes to my adapter
>> always has getOldValue() as null. Identifying the newValue and the
>> notifier works fine.
>>
>> I am observing the changed object as retrieved through a CDOView with:
>>
>> view.options().addChangeSubscriptionPolicy(CDOAdapterPolicy.ALL);
>>
>> I am setting the reference in a CDOTransaction in the same VM.
>> The adapters view has already loaded the object being adapted as well
>> as the old and new reference objects.
>>
>> Is this expected? Perhaps this is something I need to configure? I
>> need the old value in order to perform some fine-grained updates on a
>> JFace Viewer.
>>
>> Thanks,
>> Dan

Previous Topic:	Trouble adding an EDatatype of an EAttribute
Next Topic:	Using CDO in my RCP application

Goto Forum:

-=] Back to Top [=-

Current Time: Wed Jul 23 20:50:17 EDT 2025

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter