JPA 1.0 Advanced (Java EE 5)


  • Embeddable objects 
  • Secondary tables 
  • Composite primary key 
  • Fetch modes 
  • Entity Listeners

Embeddable Objects

What is an Embeddable Object?

  • Embeddable object is stored as intrinsic part of an owning entity 
    • Doesn't have its own identity
  • Each persistent field of embeddable object is mapped to the same database table that represents the owning entity
  • @Embeddable is used to mark an embeddable object 
  • @Embedded is used in the owning entity to annotate the field for the embeddable

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