javax.persistence

## 注释类型 Transient

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

  Specifies that the property or field is not persistent. It is used to annotate a property or field of an entity class, mapped superclass, or embeddable class.

          Example:

          @Entity
          public class Employee {
              @Id int id;
              @Transient User currentUser;
              ...
          }

  从以下版本开始:
    Java Persistence 1.0