Package javax.persistence
Annotation 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
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Required Element Summary
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Element Details
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value
Class valuePrimary key class
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