api/3.0/jakarta/xml/bind/annotation/XmlElementWrapper.html - gerrit/www.eclipse.org/eclipselink - Git at Google

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 <div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">jakarta.xml.bind.annotation</a></div>
 <h2 title="Annotation Type XmlElementWrapper" class="title">Annotation Type XmlElementWrapper</h2>
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 <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#FIELD" title="class or interface in java.lang.annotation" class="externalLink">FIELD</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">XmlElementWrapper</span></pre>
 <div class="block">Generates a wrapper element around XML representation.

  This is primarily intended to be used to produce a wrapper
  XML element around collections. The annotation therefore supports
  two forms of serialization shown below.

  <pre><code>
     //Example: code fragment
       int[] names;

     // XML Serialization Form 1 (Unwrapped collection)
     &lt;names&gt; ... &lt;/names&gt;
     &lt;names&gt; ... &lt;/names&gt;

     // XML Serialization Form 2 ( Wrapped collection )
     &lt;wrapperElement&gt;
        &lt;names&gt; value-of-item &lt;/names&gt;
        &lt;names&gt; value-of-item &lt;/names&gt;
        ....
     &lt;/wrapperElement&gt;
  </code></pre>

  <p> The two serialized XML forms allow a null collection to be
  represented either by absence or presence of an element with a
  nillable attribute.

  <p> <b>Usage</b> </p>
  <p>
  The <code>@XmlElementWrapper</code> annotation can be used with the
  following program elements:
  <ul>
    <li> JavaBean property </li>
    <li> non static, non transient field </li>
  </ul>

  <p>The usage is subject to the following constraints:
  <ul>
    <li> The property must be a collection property </li>
    <li> This annotation can be used with the following annotations:
             <a href="XmlElement.html" title="annotation in jakarta.xml.bind.annotation"><code>XmlElement</code></a>,
             <a href="XmlElements.html" title="annotation in jakarta.xml.bind.annotation"><code>XmlElements</code></a>,
             <a href="XmlElementRef.html" title="annotation in jakarta.xml.bind.annotation"><code>XmlElementRef</code></a>,
             <a href="XmlElementRefs.html" title="annotation in jakarta.xml.bind.annotation"><code>XmlElementRefs</code></a>,
             <a href="adapters/XmlJavaTypeAdapter.html" title="annotation in jakarta.xml.bind.annotation.adapters"><code>XmlJavaTypeAdapter</code></a>.</li>
  </ul>

  <p>See "Package Specification" in jakarta.xml.bind.package javadoc for
  additional common information.</p></div>
 <dl>
 <dt><span class="seeLabel">See Also:</span></dt>
 <dd><a href="XmlElement.html" title="annotation in jakarta.xml.bind.annotation"><code>XmlElement</code></a>,
 <a href="XmlElements.html" title="annotation in jakarta.xml.bind.annotation"><code>XmlElements</code></a>,
 <a href="XmlElementRef.html" title="annotation in jakarta.xml.bind.annotation"><code>XmlElementRef</code></a>,
 <a href="XmlElementRefs.html" title="annotation in jakarta.xml.bind.annotation"><code>XmlElementRefs</code></a></dd>
 <dt><span class="simpleTagLabel">Author:</span></dt>
 <dd><ul><li>Kohsuke Kawaguchi, Sun Microsystems, Inc.</li><li>Sekhar Vajjhala, Sun Microsystems, Inc.</li></ul></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 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">&nbsp;</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="#name()">name</a></span></code></th>
 <td class="colLast">
 <div class="block">Name of the XML wrapper 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">XML target namespace of the XML wrapper element.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>boolean</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#nillable()">nillable</a></span></code></th>
 <td class="colLast">
 <div class="block">If true, the absence of the collection is represented by
  using <code>xsi:nil='true'</code>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>boolean</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#required()">required</a></span></code></th>
 <td class="colLast">
 <div class="block">Customize the wrapper element declaration to be required.</div>
 </td>
 </tr>
 </table>
 </li>
 </ul>
 </section>
 </li>
 </ul>
 </div>
 <div class="details">
 <ul class="blockList">
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 <!-- ============ ANNOTATION TYPE MEMBER DETAIL =========== -->
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 <ul class="blockList">
 <li class="blockList"><a id="annotation.type.element.detail">
 <!--   -->
 </a>
 <h3>Element Detail</h3>
 <a id="name()">
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 <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>&nbsp;name</pre>
 <div class="block">Name of the XML wrapper element. By default, the XML wrapper
  element name is derived from the JavaBean property name.</div>
 <dl>
 <dt>Default:</dt>
 <dd>"##default"</dd>
 </dl>
 </li>
 </ul>
 </li>
 </ul>
 </section>
 <section role="region">
 <ul class="blockList">
 <li class="blockList"><a id="namespace()">
 <!--   -->
 </a>
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 <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>&nbsp;namespace</pre>
 <div class="block">XML target namespace of the XML wrapper element.
  <p>
  If the value is "##default", then the namespace is determined
  as follows:
  <ol>
   <li>
   If the enclosing package has <a href="XmlSchema.html" title="annotation in jakarta.xml.bind.annotation"><code>XmlSchema</code></a> annotation,
   and its <a href="XmlSchema.html#elementFormDefault()"><code>elementFormDefault</code></a>
   is <a href="XmlNsForm.html#QUALIFIED"><code>QUALIFIED</code></a>, then the namespace of
   the enclosing class.

   <li>
   Otherwise "" (which produces unqualified element in the default
   namespace.
  </ol></div>
 <dl>
 <dt>Default:</dt>
 <dd>"##default"</dd>
 </dl>
 </li>
 </ul>
 </li>
 </ul>
 </section>
 <section role="region">
 <ul class="blockList">
 <li class="blockList"><a id="nillable()">
 <!--   -->
 </a>
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 <li class="blockList">
 <h4>nillable</h4>
 <pre>boolean&nbsp;nillable</pre>
 <div class="block">If true, the absence of the collection is represented by
  using <code>xsi:nil='true'</code>. Otherwise, it is represented by
  the absence of the element.</div>
 <dl>
 <dt>Default:</dt>
 <dd>false</dd>
 </dl>
 </li>
 </ul>
 </li>
 </ul>
 </section>
 <section role="region">
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 <li class="blockList"><a id="required()">
 <!--   -->
 </a>
 <ul class="blockListLast">
 <li class="blockList">
 <h4>required</h4>
 <pre>boolean&nbsp;required</pre>
 <div class="block">Customize the wrapper element declaration to be required.

  <p>
  If required() is true, then the corresponding generated
  XML schema element declaration will have <code>minOccurs="1"</code>,
  to indicate that the wrapper element is always expected.

  <p>
  Note that this only affects the schema generation, and
  not the unmarshalling or marshalling capability. This is
  simply a mechanism to let users express their application constraints
  better.</div>
 <dl>
 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>1.6, JAXB 2.1</dd>
 </dl>
 <dl>
 <dt>Default:</dt>
 <dd>false</dd>
 </dl>
 </li>
 </ul>
 </li>
 </ul>
 </section>
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	<h2 title="Annotation Type XmlElementWrapper" class="title">Annotation Type XmlElementWrapper</h2>
	</div>
	<div class="contentContainer">
	<div class="description">
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	<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#FIELD" title="class or interface in java.lang.annotation" class="externalLink">FIELD</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">XmlElementWrapper</span></pre>
	<div class="block">Generates a wrapper element around XML representation.

	This is primarily intended to be used to produce a wrapper
	XML element around collections. The annotation therefore supports
	two forms of serialization shown below.

	<pre><code>
	//Example: code fragment
	int[] names;

	// XML Serialization Form 1 (Unwrapped collection)
	<names> ... </names>
	<names> ... </names>

	// XML Serialization Form 2 ( Wrapped collection )
	<wrapperElement>
	<names> value-of-item </names>
	<names> value-of-item </names>
	....
	</wrapperElement>
	</code></pre>

	<p> The two serialized XML forms allow a null collection to be
	represented either by absence or presence of an element with a
	nillable attribute.

	<p> <b>Usage</b> </p>
	<p>
	The <code>@XmlElementWrapper</code> annotation can be used with the
	following program elements:
	<ul>
	<li> JavaBean property </li>
	<li> non static, non transient field </li>
	</ul>

	<p>The usage is subject to the following constraints:
	<ul>
	<li> The property must be a collection property </li>
	<li> This annotation can be used with the following annotations:
	<a href="XmlElement.html" title="annotation in jakarta.xml.bind.annotation"><code>XmlElement</code></a>,
	<a href="XmlElements.html" title="annotation in jakarta.xml.bind.annotation"><code>XmlElements</code></a>,
	<a href="XmlElementRef.html" title="annotation in jakarta.xml.bind.annotation"><code>XmlElementRef</code></a>,
	<a href="XmlElementRefs.html" title="annotation in jakarta.xml.bind.annotation"><code>XmlElementRefs</code></a>,
	<a href="adapters/XmlJavaTypeAdapter.html" title="annotation in jakarta.xml.bind.annotation.adapters"><code>XmlJavaTypeAdapter</code></a>.</li>
	</ul>

	<p>See "Package Specification" in jakarta.xml.bind.package javadoc for
	additional common information.</p></div>
	<dl>
	<dt><span class="seeLabel">See Also:</span></dt>
	<dd><a href="XmlElement.html" title="annotation in jakarta.xml.bind.annotation"><code>XmlElement</code></a>,
	<a href="XmlElements.html" title="annotation in jakarta.xml.bind.annotation"><code>XmlElements</code></a>,
	<a href="XmlElementRef.html" title="annotation in jakarta.xml.bind.annotation"><code>XmlElementRef</code></a>,
	<a href="XmlElementRefs.html" title="annotation in jakarta.xml.bind.annotation"><code>XmlElementRefs</code></a></dd>
	<dt><span class="simpleTagLabel">Author:</span></dt>
	<dd><ul><li>Kohsuke Kawaguchi, Sun Microsystems, Inc.</li><li>Sekhar Vajjhala, Sun Microsystems, Inc.</li></ul></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 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="#name()">name</a></span></code></th>
	<td class="colLast">
	<div class="block">Name of the XML wrapper 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">XML target namespace of the XML wrapper element.</div>
	</td>
	</tr>
	<tr class="altColor">
	<td class="colFirst"><code>boolean</code></td>
	<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#nillable()">nillable</a></span></code></th>
	<td class="colLast">
	<div class="block">If true, the absence of the collection is represented by
	using <code>xsi:nil='true'</code>.</div>
	</td>
	</tr>
	<tr class="rowColor">
	<td class="colFirst"><code>boolean</code></td>
	<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#required()">required</a></span></code></th>
	<td class="colLast">
	<div class="block">Customize the wrapper element declaration to be required.</div>
	</td>
	</tr>
	</table>
	</li>
	</ul>
	</section>
	</li>
	</ul>
	</div>
	<div class="details">
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	<!-- ============ ANNOTATION TYPE MEMBER DETAIL =========== -->
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	</a>
	<h3>Element Detail</h3>
	<a id="name()">
	<!-- -->
	</a>
	<ul class="blockList">
	<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">Name of the XML wrapper element. By default, the XML wrapper
	element name is derived from the JavaBean property name.</div>
	<dl>
	<dt>Default:</dt>
	<dd>"##default"</dd>
	</dl>
	</li>
	</ul>
	</li>
	</ul>
	</section>
	<section role="region">
	<ul class="blockList">
	<li class="blockList"><a id="namespace()">
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	</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">XML target namespace of the XML wrapper element.
	<p>
	If the value is "##default", then the namespace is determined
	as follows:
	<ol>
	<li>
	If the enclosing package has <a href="XmlSchema.html" title="annotation in jakarta.xml.bind.annotation"><code>XmlSchema</code></a> annotation,
	and its <a href="XmlSchema.html#elementFormDefault()"><code>elementFormDefault</code></a>
	is <a href="XmlNsForm.html#QUALIFIED"><code>QUALIFIED</code></a>, then the namespace of
	the enclosing class.

	<li>
	Otherwise "" (which produces unqualified element in the default
	namespace.
	</ol></div>
	<dl>
	<dt>Default:</dt>
	<dd>"##default"</dd>
	</dl>
	</li>
	</ul>
	</li>
	</ul>
	</section>
	<section role="region">
	<ul class="blockList">
	<li class="blockList"><a id="nillable()">
	<!-- -->
	</a>
	<ul class="blockList">
	<li class="blockList">
	<h4>nillable</h4>
	<pre>boolean nillable</pre>
	<div class="block">If true, the absence of the collection is represented by
	using <code>xsi:nil='true'</code>. Otherwise, it is represented by
	the absence of the element.</div>
	<dl>
	<dt>Default:</dt>
	<dd>false</dd>
	</dl>
	</li>
	</ul>
	</li>
	</ul>
	</section>
	<section role="region">
	<ul class="blockList">
	<li class="blockList"><a id="required()">
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	</a>
	<ul class="blockListLast">
	<li class="blockList">
	<h4>required</h4>
	<pre>boolean required</pre>
	<div class="block">Customize the wrapper element declaration to be required.

	<p>
	If required() is true, then the corresponding generated
	XML schema element declaration will have <code>minOccurs="1"</code>,
	to indicate that the wrapper element is always expected.

	<p>
	Note that this only affects the schema generation, and
	not the unmarshalling or marshalling capability. This is
	simply a mechanism to let users express their application constraints
	better.</div>
	<dl>
	<dt><span class="simpleTagLabel">Since:</span></dt>
	<dd>1.6, JAXB 2.1</dd>
	</dl>
	<dl>
	<dt>Default:</dt>
	<dd>false</dd>
	</dl>
	</li>
	</ul>
	</li>
	</ul>
	</section>
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