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[CDO]How CDOResource compare with specified revision? [message #658571]

Tue, 08 March 2011 22:15

Eclipse User

Hi, Eike
Using CDORevisionDeltaUtil.createChangeSetData(Set<CDOID> ids, final CDOBranchPoint startPoint,
final CDOBranchPoint endPoint, final CDORevisionManager revisionManager) can get CDOChangeSetData. But how i can get all of the object's cdoids in CDOResource?

Re: [CDO]How CDOResource compare with specified revision? [message #658577 is a reply to message #658571]

Wed, 09 March 2011 00:04

Eclipse User

Hi Xingxiao,

There is no other way than to traverse the resource contents recursively yourself. Each object (including resources) only knows its *direct* container object. In particular the question "does object A *indirectly* contain object B?" can not be answered atomically or deterministically.

Cheers
/Eike

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

Am 09.03.2011 04:15, schrieb Xingxiao Lu:
> Hi, Eike
> Using CDORevisionDeltaUtil.createChangeSetData(Set<CDOID> ids, final CDOBranchPoint startPoint,
> final CDOBranchPoint endPoint, final CDORevisionManager revisionManager) can get CDOChangeSetData. But how i can get all of the object's cdoids in CDOResource?
>
>

Re: [CDO]How CDOResource compare with specified revision? [message #658578 is a reply to message #658577]

Wed, 09 March 2011 00:40

Eclipse User

Thank you, Eike.
I want to develop a "compare with... (specified revision)" UI for CDOResource. Do you have any good ideas or suggestions?

Re: [CDO]How CDOResource compare with specified revision? [message #658580 is a reply to message #658578]

Wed, 09 March 2011 01:02

Eclipse User

Am 09.03.2011 06:40, schrieb Xingxiao Lu:
> Thank you, Eike. I want to develop a "compare with... (specified revision)" UI for CDOResource. Do you have any good ideas or suggestions?
I would probably open audit views at the two times (CDOBranchPoints) you want to compare, add the IDs of all contained objects into a set and then call the method you've already found on CDORevisionDeltaUtil.

Note that there are also methods for the entire graph:

CDOChangeSetData CDOSession.compareRevisions(CDOBranchPoint, CDOBranchPoint)
CDOChangeSetData CDOView.compareRevisions(CDOBranchPoint)

Cheers
/Eike

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

Re: [CDO]How CDOResource compare with specified revision? [message #658588 is a reply to message #658580]

Wed, 09 March 2011 02:27

Eclipse User

Three lists (newObjects, changedObjects, detachedObjects) can be obtained through CDOChangeSetData. My question is how can I get "structured comparison". Sad

Re: [CDO]How CDOResource compare with specified revision? [message #658590 is a reply to message #658588]

Wed, 09 March 2011 02:34

Eclipse User

Am 09.03.2011 08:27, schrieb Xingxiao Lu:
> Three lists (newObjects, changedObjects, detachedObjects) can be obtained through CDOChangeSetData. My question is how can I get "structured comparison". :(
Define "structured comparison".

Cheers
/Eike

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

Re: [CDO]How CDOResource compare with specified revision? [message #658592 is a reply to message #658590]

Wed, 09 March 2011 02:51

Eclipse User

I want to develop a comparison UI as EMF Compare.

http://www.eclipse.org/emf/compare/images/screenshot.png

How should I do after I get ChangeSetData of CDOResource?

Re: [CDO]How CDOResource compare with specified revision? [message #658600 is a reply to message #658592]

Wed, 09 March 2011 03:29

Eclipse User

Am 09.03.2011 08:51, schrieb Xingxiao Lu:
> I want to develop a comparison UI as EMF Compare.
>
> How should I do after I get ChangeSetData of CDOResource?
Object trees in CDO can grow quite large and deep, so we have focused on a scalable representation of change sets. Mapping these change set infos back to tehe "before" and "after" trees could be done with audit views that provide you with the object trees at those times.

If you develop something flexible and reusable, we might appreciate if you consider to contribute it ;-)

Cheers
/Eike

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

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