javax.persistence

## Annotation Type IdClass

-     @Target(value=TYPE)
      @Retention(value=RUNTIME)
      public @interface IdClass

  Specifies a composite primary key class that is mapped to multiple fields or properties of the entity.

  The names of the fields or properties in the primary key class and the primary key fields or properties of the entity must correspond and their types must be the same.

         Example:

         @IdClass(com.acme.EmployeePK.class)
         @Entity
         public class Employee {
            @Id String empName;
            @Id Date birthDay;
            ...
         }

  Since:
    Java Persistence 1.0

- - ### Required Element Summary

    Required Elements
    Modifier and Type | Required Element and Description
    --- | ---
    `Class` | `value` Primary key class

- - ### Element Detail

    - #### value

          public abstract Class value

      Primary key class

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