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AggregateCollectionMapping in DyanmicMapping [message #918110]

Thu, 20 September 2012 14:55

jason zhang
Messages: 2
Registered: July 2009

Junior Member

I am using the Dynamic Map feature in eclipselink.
I noticed that JPADynamicTypeBuilder does not have a method to add
AggregateCollectionMapping method. AggregateCollectionMapping should
be the one for ElementCollection in JPA for embedded class.
I create and add AggregateCollectionMapping directly to JPADynamicTypeBuilder. Code is attached.
I can save embedded colleciton, and delete them together with owing instance. But I can not modify them(modify one element, remove one, or and one).

In my code, I first call create to create the mapping. I then call save. I check
logged sql and database structure. Embedded collection is saved
correctly. I then call removeOneName1 and removeOneName2 to remove one
embedded object by different approaches. But this removal is just ignored by EntityManager.

Any help is really appreciated.

-jason

Attachment: Test1.java
(Size: 7.58KB, Downloaded 37 times)

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Re: AggregateCollectionMapping in DyanmicMapping [message #918519 is a reply to message #918110]

Fri, 21 September 2012 00:52

jason zhang
Messages: 2
Registered: July 2009

Junior Member

Bump!
Any help is really appreciated!
I have looked into various piece of the source code and can not figure out why this does not work.

thanks.
-jason

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Re: AggregateCollectionMapping in DyanmicMapping [message #923035 is a reply to message #918519]

Tue, 25 September 2012 10:50

James Sutherland
Messages: 1844
Registered: July 2009

Senior Member

Please log a bug for this issue and vote for it.

I believe the issue you are seeing is related to change tracking, which defaults to Attribute for dynamic, but Attribute is not support for aggregate collections.
You could try switching your descriptor to use deferred change tracking,

descriptor.setObjectChangePolicy(new DeferredChangeDetectionPolicy());

James : Wiki : Book : Blog

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