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| <li>Summary: </li> |
| <li>Field | </li> |
| <li><a href="#annotation.type.required.element.summary">Required</a> | </li> |
| <li><a href="#annotation.type.optional.element.summary">Optional</a></li> |
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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">jakarta.xml.bind.annotation</a></div> |
| <h2 title="Annotation Type XmlElementDecl" class="title">Annotation Type XmlElementDecl</h2> |
| </div> |
| <div class="contentContainer"> |
| <div class="description"> |
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| <hr> |
| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/annotation/Retention.html?is-external=true" title="class or interface in java.lang.annotation" class="externalLink">@Retention</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/annotation/RetentionPolicy.html?is-external=true#RUNTIME" title="class or interface in java.lang.annotation" class="externalLink">RUNTIME</a>) |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/annotation/Target.html?is-external=true" title="class or interface in java.lang.annotation" class="externalLink">@Target</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/annotation/ElementType.html?is-external=true#METHOD" title="class or interface in java.lang.annotation" class="externalLink">METHOD</a>) |
| public @interface <span class="memberNameLabel">XmlElementDecl</span></pre> |
| <div class="block">Maps a factory method to a XML element. |
| |
| <p> <b>Usage</b> </p> |
| |
| The annotation creates a mapping between an XML schema element |
| declaration and a <i> element factory method </i> that returns a |
| JAXBElement instance representing the element |
| declaration. Typically, the element factory method is generated |
| (and annotated) from a schema into the ObjectFactory class in a |
| Java package that represents the binding of the element |
| declaration's target namespace. Thus, while the annotation syntax |
| allows @XmlElementDecl to be used on any method, semantically |
| its use is restricted to annotation of element factory method. |
| |
| The usage is subject to the following constraints: |
| |
| <ul> |
| <li> The class containing the element factory method annotated |
| with @XmlElementDecl must be marked with <a href="XmlRegistry.html" title="annotation in jakarta.xml.bind.annotation"><code>XmlRegistry</code></a>. </li> |
| <li> The element factory method must take one parameter |
| assignable to <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink"><code>Object</code></a>.</li> |
| </ul> |
| |
| <p><b>Example 1: </b>Annotation on a factory method |
| <pre> |
| // Example: code fragment |
| @XmlRegistry |
| class ObjectFactory { |
| @XmlElementDecl(name="foo") |
| JAXBElement<String> createFoo(String s) { ... } |
| } |
| </pre> |
| <pre> <code> |
| |
| <!-- XML input --> |
| <foo>string</foo> |
| |
| // Example: code fragment corresponding to XML input |
| JAXBElement<String> o = |
| (JAXBElement<String>)unmarshaller.unmarshal(aboveDocument); |
| // print JAXBElement instance to show values |
| System.out.println(o.getName()); // prints "{}foo" |
| System.out.println(o.getValue()); // prints "string" |
| System.out.println(o.getValue().getClass()); // prints "java.lang.String" |
| |
| <!-- Example: XML schema definition --> |
| <xs:element name="foo" type="xs:string"/> |
| </code></pre> |
| |
| <p><b>Example 2: </b> Element declaration with non local scope |
| <p> |
| The following example illustrates the use of scope annotation |
| parameter in binding of element declaration in schema derived |
| code. |
| <p> |
| The following example may be replaced in a future revision of |
| this javadoc. |
| |
| <pre><code> |
| <!-- Example: XML schema definition --> |
| <xs:schema> |
| <xs:complexType name="pea"> |
| <xs:choice maxOccurs="unbounded"> |
| <xs:element name="foo" type="xs:string"/> |
| <xs:element name="bar" type="xs:string"/> |
| </xs:choice> |
| </xs:complexType> |
| <xs:element name="foo" type="xs:int"/> |
| </xs:schema> |
| </code></pre> |
| <pre> |
| // Example: expected default binding |
| class Pea { |
| @XmlElementRefs({ |
| @XmlElementRef(name="foo",type=JAXBElement.class) |
| @XmlElementRef(name="bar",type=JAXBElement.class) |
| }) |
| List<JAXBElement<String>> fooOrBar; |
| } |
| |
| @XmlRegistry |
| class ObjectFactory { |
| @XmlElementDecl(scope=Pea.class,name="foo") |
| JAXBElement<String> createPeaFoo(String s); |
| |
| @XmlElementDecl(scope=Pea.class,name="bar") |
| JAXBElement<String> createPeaBar(String s); |
| |
| @XmlElementDecl(name="foo") |
| JAXBElement<Integer> createFoo(Integer i); |
| } |
| |
| </pre> |
| Without scope createFoo and createPeaFoo would become ambiguous |
| since both of them map to a XML schema element with the same local |
| name "foo".</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="XmlRegistry.html" title="annotation in jakarta.xml.bind.annotation"><code>XmlRegistry</code></a></dd> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>1.6, JAXB 2.0</dd> |
| </dl> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- =========== ANNOTATION TYPE REQUIRED MEMBER SUMMARY =========== --> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="annotation.type.required.element.summary"> |
| <!-- --> |
| </a> |
| <h3>Required Element Summary</h3> |
| <table class="memberSummary"> |
| <caption><span>Required Elements</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Required Element</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#name()">name</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">local name of the XML element.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </section> |
| <!-- =========== ANNOTATION TYPE OPTIONAL MEMBER SUMMARY =========== --> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="annotation.type.optional.element.summary"> |
| <!-- --> |
| </a> |
| <h3>Optional Element Summary</h3> |
| <table class="memberSummary"> |
| <caption><span>Optional Elements</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Optional Element</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#defaultValue()">defaultValue</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Default value of this element.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#namespace()">namespace</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">namespace name of the XML element.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#scope()">scope</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">scope of the mapping.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#substitutionHeadName()">substitutionHeadName</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">XML local name of a substitution group's head element.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#substitutionHeadNamespace()">substitutionHeadNamespace</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">namespace name of a substitution group's head XML element.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ============ ANNOTATION TYPE MEMBER DETAIL =========== --> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="annotation.type.element.detail"> |
| <!-- --> |
| </a> |
| <h3>Element Detail</h3> |
| <a id="name()"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>name</h4> |
| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> name</pre> |
| <div class="block">local name of the XML element. |
| |
| <p> |
| <b> Note to reviewers: </b> There is no default name; since |
| the annotation is on a factory method, it is not clear that the |
| method name can be derived from the factory method name.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="#namespace()"><code>namespace()</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| <!-- ============ ANNOTATION TYPE MEMBER DETAIL =========== --> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="scope()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>scope</h4> |
| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a> scope</pre> |
| <div class="block">scope of the mapping. |
| |
| <p> |
| If this is not <a href="XmlElementDecl.GLOBAL.html" title="class in jakarta.xml.bind.annotation"><code>XmlElementDecl.GLOBAL</code></a>, then this element |
| declaration mapping is only active within the specified class.</div> |
| <dl> |
| <dt>Default:</dt> |
| <dd>jakarta.xml.bind.annotation.XmlElementDecl.GLOBAL.class</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="namespace()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>namespace</h4> |
| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> namespace</pre> |
| <div class="block">namespace name of the XML element. |
| <p> |
| If the value is "##default", then the value is the namespace |
| name for the package of the class containing this factory method.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="#name()"><code>name()</code></a></dd> |
| </dl> |
| <dl> |
| <dt>Default:</dt> |
| <dd>"##default"</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="substitutionHeadNamespace()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>substitutionHeadNamespace</h4> |
| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> substitutionHeadNamespace</pre> |
| <div class="block">namespace name of a substitution group's head XML element. |
| <p> |
| This specifies the namespace name of the XML element whose local |
| name is specified by <code>substitutionHeadName()</code>. |
| <p> |
| If <code>susbtitutionHeadName()</code> is "", then this |
| value can only be "##default". But the value is ignored since |
| since this element is not part of susbtitution group when the |
| value of <code>susbstitutionHeadName()</code> is "". |
| <p> |
| If <code>susbtitutionHeadName()</code> is not "" and the value is |
| "##default", then the namespace name is the namespace name to |
| which the package of the containing class, marked with <a href="XmlRegistry.html" title="annotation in jakarta.xml.bind.annotation"><code>XmlRegistry</code></a>, is mapped. |
| <p> |
| If <code>susbtitutionHeadName()</code> is not "" and the value is |
| not "##default", then the value is the namespace name.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="#substitutionHeadName()"><code>substitutionHeadName()</code></a></dd> |
| </dl> |
| <dl> |
| <dt>Default:</dt> |
| <dd>"##default"</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="substitutionHeadName()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>substitutionHeadName</h4> |
| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> substitutionHeadName</pre> |
| <div class="block">XML local name of a substitution group's head element. |
| <p> |
| If the value is "", then this element is not part of any |
| substitution group.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="#substitutionHeadNamespace()"><code>substitutionHeadNamespace()</code></a></dd> |
| </dl> |
| <dl> |
| <dt>Default:</dt> |
| <dd>""</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| <section role="region"> |
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| <li class="blockList"><a id="defaultValue()"> |
| <!-- --> |
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| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>defaultValue</h4> |
| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> defaultValue</pre> |
| <div class="block">Default value of this element. |
| |
| <p> |
| The <pre>''</pre> value specified as a default of this annotation element |
| is used as a poor-man's substitute for null to allow implementations |
| to recognize the 'no default value' state.</div> |
| <dl> |
| <dt>Default:</dt> |
| <dd>"\u0000"</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
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