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49 lines
1.3 KiB
49 lines
1.3 KiB
7 years ago
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/*
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* Copyright (c) 2008, 2009, 2011 Oracle, Inc. All rights reserved.
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*
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* This program and the accompanying materials are made available under the
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* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
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* which accompanies this distribution. The Eclipse Public License is available
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* at http://www.eclipse.org/legal/epl-v10.html and the Eclipse Distribution License
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* is available at http://www.eclipse.org/org/documents/edl-v10.php.
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*/
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package com.fr.third.javax.persistence;
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import java.lang.annotation.Retention;
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import java.lang.annotation.Target;
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import static java.lang.annotation.ElementType.TYPE;
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import static java.lang.annotation.RetentionPolicy.RUNTIME;
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/**
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* Specifies a composite primary key class that is mapped to
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* multiple fields or properties of the entity.
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*
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* <p> The names of the fields or properties in the primary key
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* class and the primary key fields or properties of the entity
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* must correspond and their types must be the same.
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*
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* <pre>
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*
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* Example:
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*
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* @IdClass(com.acme.EmployeePK.class)
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* @Entity
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* public class Employee {
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* @Id String empName;
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* @Id Date birthDay;
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* ...
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* }
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* </pre>
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*
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* @since Java Persistence 1.0
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*/
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@Target({TYPE})
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@Retention(RUNTIME)
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public @interface IdClass {
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/** Primary key class */
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Class value();
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}
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