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/*******************************************************************************
 * Copyright (c) 2014 Oracle and/or its affiliates. All rights reserved.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
 * which accompanies this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * Contributors:
 *     Martin Vojtek - 2.6 - Initial contribution
 ******************************************************************************/
package org.eclipse.persistence.oxm.annotations;

import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

import java.lang.annotation.Retention;
import java.lang.annotation.Target;

/**
 * Purpose: Provide a way to allow properties with XmlID annotation have different type than java.lang.String.
 * By default, all properties annotated with XmlID annotation are restricted to have java.lang.String type.
 * If XmlIDExtension annotation is used, there is no restriction of used type with XmlID annotation.
 * Using XmlIDExtension provides way how to achieve backward compatibility with EclipseLink 2.5.x and before.
 * When using xml bindings with XmlID property, it has same behavior as when XmlIDExtension is used.
 * It means that there is no need to specify XmlIDExtension in xml, because the behavior is provided by default.
 * 
 * @see javax.xml.bind.annotation.XmlID
 */
@Target({METHOD, FIELD})
@Retention(RUNTIME)
public @interface XmlIDExtension {
}