[JIRA] Created: (CAY-660) JPA-like callbacks support in the main Cayenne stack

From: Andrus Adamchik (JIRA) ("Andrus)
Date: Wed Sep 20 2006 - 18:58:48 EDT

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JPA-like callbacks support in the main Cayenne stack
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         Key: CAY-660
         URL: http://issues.apache.org/cayenne/browse/CAY-660
     Project: Cayenne
        Type: New Feature

  Components: Cayenne Core Library
    Versions: 3.0
    Reporter: Andrus Adamchik
Assigned to: Andrus Adamchik
     Fix For: 3.0

JPA specification defines callbacks similar to our 1.1 DataContext events that can be invoked either on an entity object or on an arbitrary class on commit:

PrePersist
PostPersist

PreRemove
PostRemove

PreUpdate
PostUpdate

PostLoad

With nested channels (CAY-658) and ObjectContext interface it should be possible to create iterceptors for all these callbacks that are external to DataContext or any other Cayenne classes. "PrePersist" and "PreRemove" (and possibly "PreUpdate" can go in an ObjectContext interceptor, the rest in a DataChannel (specifically DataDomain) interceptor. No JPA or JDK1.5 dependencies are needed to implement that.

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