Inheritance (Java EE 5 SDK)

javax.persistence Annotation Type Inheritance

@Target(value=TYPE)
@Retention(value=RUNTIME)
public @interface Inheritance

Defines the inheritance strategy to be used for an entity class hierarchy. It is specified on the entity class that is the root of the entity class hierarchy.

   Example:

   @Entity
   @Inheritance(strategy=JOINED)
   public class Customer { ... }

   @Entity
   public class ValuedCustomer extends Customer { ... }
 

从以下版本开始:

Java Persistence 1.0

strategy

public abstract InheritanceType strategy

The strategy to be used

默认值:

SINGLE_TABLE

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