|Re: [CDO] Resolve cross references for new objects that has not been committed yet [message #1016820 is a reply to message #1016653]
||Thu, 07 March 2013 19:44
|| Eike Stepper
Registered: July 2009
Am 07.03.2013 18:01, schrieb Jim Stanton:|
> Since a while I converted my application to use CDO 4.0 because of the amount of data it has to handle. It all works
> very well however there are some problems I haven't been able to solve yet. One of them I describe below:
> I am trying to understand how I can replace the EMF ECrossReferenceAdapter with something more CDO conform for my huge
> model. The ECrossReferenceAdapter seems to eagerly adapt itself and cause the whole model to be loaded into memory.
> The application blocks for several minutes.
> Now, for references persisted in the database already I can use the queryXRefs of the CDOView and get all cross
> org.eclipse.emf.cdo.view.cdoView.queryXRefs(cdoObject, EReference...)
> org.eclipse.emf.cdo.view.cdoView.queryXRefs(Set<cdoObject>, EReference...)
> org.eclipse.emf.cdo.view.cdoView.queryXRefsAsync(Set<cdoObject>, EReference...)
> The problem I have is that new references, that weren't committed yet, are not included in the returning list of
> CDOObjectReferences. Only what already was committed in the database. Now I am trying to find out if I am missing to
> add some adapter for that, or if it already exists a similar utility method as the queryXRefs for objects created in
> the session but not yet committed? Would retrieving deltas be relevant for that?
I think it would be reasonable that the queryXRefs() "merges" the remote result with possible local changes. Please
submit an enhancement request. If you want to provide a patch for this you may want to make use of these methods:
CDOTransaction.getNewObjects() and CDOObject.cdoRevision()
CDOTransaction.getDirtyObjects() or CDOTransaction.getRevisionDeltas()
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