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95 lines
2.4 KiB
95 lines
2.4 KiB
/*
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* Copyright (c) 2004, 2013, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*/
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package javax.xml.bind.annotation;
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import java.lang.annotation.Target;
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import java.lang.annotation.Retention;
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import static java.lang.annotation.ElementType.*;
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import static java.lang.annotation.RetentionPolicy.*;
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/**
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* <p>
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* Maps a JavaBean property to XML ID.
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*
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* <p>
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* To preserve referential integrity of an object graph across XML
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* serialization followed by a XML deserialization, requires an object
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* reference to be marshalled by reference or containment
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* appropriately. Annotations <tt>@XmlID</tt> and <tt>@XmlIDREF</tt>
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* together allow a customized mapping of a JavaBean property's
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* type by containment or reference.
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*
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* <p><b>Usage</b> </p>
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* The <tt>@XmlID</tt> annotation can be used with the following
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* program elements:
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* <ul>
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* <li> a JavaBean property </li>
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* <li> non static, non transient field </li>
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* </ul>
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*
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* <p>See "Package Specification" in javax.xml.bind.package javadoc for
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* additional common information.</p>
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*
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* The usage is subject to the following constraints:
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* <ul>
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* <li> At most one field or property in a class can be annotated
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* with <tt>@XmlID</tt>. </li>
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* <li> The JavaBean property's type must be <tt>java.lang.String</tt>.</li>
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* <li> The only other mapping annotations that can be used
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* with <tt>@XmlID</tt>
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* are:<tt>@XmlElement</tt> and <tt>@XmlAttribute</tt>.</li>
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* </ul>
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*
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* <p><b>Example</b>: Map a JavaBean property's type to <tt>xs:ID</tt></p>
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* <pre>
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* // Example: code fragment
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* public class Customer {
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* @XmlAttribute
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* @XmlID
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* public String getCustomerID();
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* public void setCustomerID(String id);
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* .... other properties not shown
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* }
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*
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* <!-- Example: XML Schema fragment -->
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* <xs:complexType name="Customer">
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* <xs:complexContent>
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* <xs:sequence>
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* ....
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* </xs:sequence>
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* <xs:attribute name="customerID" type="xs:ID"/>
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* </xs:complexContent>
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* </xs:complexType>
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* </pre>
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*
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* @author Sekhar Vajjhala, Sun Microsystems, Inc.
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* @see XmlIDREF
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* @since JAXB2.0
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*/
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@Retention(RUNTIME) @Target({FIELD, METHOD})
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public @interface XmlID { }
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