Enumerated (Java EE 5 SDK)

javax.persistence Annotation Type Enumerated

@Target(value={METHOD,FIELD})
@Retention(value=RUNTIME)
public @interface Enumerated

Specifies that a persistent property or field should be persisted as a enumerated type. It may be used in conjunction with the Basic annotation.

   Example:

   public enum EmployeeStatus {FULL_TIME, PART_TIME, CONTRACT}

   public enum SalaryRate {JUNIOR, SENIOR, MANAGER, EXECUTIVE}

   @Entity public class Employee {
       public EmployeeStatus getStatus() {...}
       @Enumerated(STRING)
       public SalaryRate getPayScale() {...}
       ...
   }
 

从以下版本开始:

Java Persistence 1.0

value

public abstract EnumType value

(Optional) The type used in mapping an enum type.

默认值:

ORDINAL

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