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Updated merging docs.

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Roman S. Borschel 2010-07-31 12:00:34 +02:00
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manual/en/working-with-objects.txt
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@ -159,8 +159,8 @@ Example:
The semantics of the merge operation, applied to an entity X, are as follows: The semantics of the merge operation, applied to an entity X, are as follows:
* If X is a detached entity, the state of X is copied onto a pre-existing managed entity instance X' of the same identity or a new managed copy X' of X is created. * If X is a detached entity, the state of X is copied onto a pre-existing managed entity instance X' of the same identity.
* If X is a new entity instance, an InvalidArgumentException will be thrown. * If X is a new entity instance, a new managed copy X' will be created and the state of X is copied onto this managed instance.
* If X is a removed entity instance, an InvalidArgumentException will be thrown. * If X is a removed entity instance, an InvalidArgumentException will be thrown.
* If X is a managed entity, it is ignored by the merge operation, however, the merge operation is cascaded to entities referenced by relationships from X if these relationships have been mapped with the cascade element value MERGE or ALL (see "Transitive Persistence"). * If X is a managed entity, it is ignored by the merge operation, however, the merge operation is cascaded to entities referenced by relationships from X if these relationships have been mapped with the cascade element value MERGE or ALL (see "Transitive Persistence").
* For all entities Y referenced by relationships from X having the cascade element value * For all entities Y referenced by relationships from X having the cascade element value