Inheritance (Java EE 5 SDK)

Java

Java EE 5 SDK

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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

Optional Element Summary
 InheritanceType strategy
          The strategy to be used
 

strategy

public abstract InheritanceType strategy
The strategy to be used

默认值:
SINGLE_TABLE

Java EE 5 SDK

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