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59 lines
1.9 KiB
59 lines
1.9 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.FIELD;
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import static java.lang.annotation.ElementType.METHOD;
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import static java.lang.annotation.RetentionPolicy.RUNTIME;
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/**
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* Defines mapping for composite foreign keys. This annotation
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* groups <code>JoinColumn</code> annotations for the same relationship.
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*
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* <p> When the <code>JoinColumns</code> annotation is used,
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* both the <code>name</code> and the <code>referencedColumnName</code> elements
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* must be specified in each such <code>JoinColumn</code> annotation.
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*
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* <pre>
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*
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* Example:
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* @ManyToOne
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* @JoinColumns({
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* @JoinColumn(name="ADDR_ID", referencedColumnName="ID"),
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* @JoinColumn(name="ADDR_ZIP", referencedColumnName="ZIP")
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* })
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* public Address getAddress() { return address; }
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* </pre>
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*
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* @see JoinColumn
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*
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* @since Java Persistence 1.0
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*/
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@Target({METHOD, FIELD})
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@Retention(RUNTIME)
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public @interface JoinColumns {
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/**
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* The join columns that map the relationship.
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*/
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JoinColumn[] value();
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/**
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* (Optional) The foreign key constraint specification for the join columns. This is used only if table
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* generation is in effect. Default is provider defined.
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*
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* @return The foreign key specification
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*/
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ForeignKey foreignKey() default @ForeignKey();
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}
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