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Thu, 10 April 2008 05:55

Eclipse User

Originally posted by: prateek.babel.in.bosch.com

Hello All,
I have a pretty simple problme with using of EMF supplied ChangeRecorder.
But not really able to solve it. Any help would be appreciated:

Scenario: I have a change recorder in which many changes on some objects
have been recorded. I would like to flush the change recorder only for
some particular objects. How to acheive this?

Example: Obj1, obj2 are already present in change recorder whith their set
of changes. How to remove only the changes of obj1 and leave obj2 as it is?

Thanks in advance,
Prateek

Re: change recorder [message #418290 is a reply to message #418288]

Thu, 10 April 2008 06:55

Eclipse User

This is a multi-part message in MIME format.
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Prateek,

When changes are being recorded it does:

protected List<FeatureChange> getFeatureChanges(EObject eObject)
{
ChangeDescription changeDescription = getChangeDescription();
List<FeatureChange> featureChanges =
changeDescription.getObjectChanges().get(eObject);
if (featureChanges == null)
{
Map.Entry<EObject, EList<FeatureChange>> entry =
ChangeFactory.eINSTANCE.createEObjectToChangesMapEntry(eObje ct);
changeDescription.getObjectChanges().add(entry);
featureChanges = entry.getValue();
}
return featureChanges;
}

Do doing

changeDescription.getObjectChanges().remove(eObject)

should clear the changes for that one object. Of course if
bidirectional references are involved, this might result in an
inconsistent set of changes being recorded...

Prateek Babel wrote:
> Hello All,
> I have a pretty simple problme with using of EMF supplied
> ChangeRecorder. But not really able to solve it. Any help would be
> appreciated:
>
> Scenario: I have a change recorder in which many changes on some
> objects have been recorded. I would like to flush the change recorder
> only for some particular objects. How to acheive this?
>
> Example: Obj1, obj2 are already present in change recorder whith their
> set of changes. How to remove only the changes of obj1 and leave obj2
> as it is?
>
> Thanks in advance,
> Prateek
>
>

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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html;charset=ISO-8859-15"
http-equiv="Content-Type">
</head>
<body bgcolor="#ffffff" text="#000000">
Prateek,<br>
<br>
When changes are being recorded it does:<br>
<blockquote><small>

Re: change recorder [message #418298 is a reply to message #418290]

Fri, 11 April 2008 04:22

Eclipse User

Originally posted by: prateek.babel.in.bosch.com

Hello Ed,
Thanks
I hacve done the same. But still when i come back to the change recorder
after the present session..i get back all the data wchich i had removed in
me last session

Some code snipplet:
for (EObject changedObject : new
HashSet<EObject>(modelDelta.getObjectChanges().keySet())) {
String affectedOriginURI = findOriginURI(changedObject, modelDelta);
if (originURI.equals(affectedOriginURI)) {
modelDelta.getObjectChanges().remove(changedObject);
}
}
}

Re: change recorder [message #418304 is a reply to message #418298]

Fri, 11 April 2008 06:33

Eclipse User

Prateek,

Either it's not getting removed, or it's getting added back in. Do you
know which of the two is the case? The change description itself is a
model you can add an adapter to get notifications as it changes, so you
could use that to observe what's happening...

Prateek Babel wrote:
> Hello Ed,
> Thanks
> I hacve done the same. But still when i come back to the change
> recorder after the present session..i get back all the data wchich i
> had removed in me last session
>
> Some code snipplet:
> for (EObject changedObject : new
> HashSet<EObject>(modelDelta.getObjectChanges().keySet())) {
> String affectedOriginURI = findOriginURI(changedObject,
> modelDelta);
> if (originURI.equals(affectedOriginURI)) {
> modelDelta.getObjectChanges().remove(changedObject);
> }
> }
> }
>
>
>

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