api/2.5/javax/xml/bind/annotation/XmlElement.html - gerrit/www.eclipse.org/eclipselink - Git at Google

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 <div class="header">
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 <h2 title="Annotation Type XmlElement" class="title">Annotation Type XmlElement</h2>
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 <pre>@Retention(value=RUNTIME)
 @Target(value={FIELD,METHOD,PARAMETER})
 public @interface <span class="strong">XmlElement</span></pre>
 <div class="block">Maps a JavaBean property to a XML element derived from property name.

  <p> <b>Usage</b> </p>
  <p>
  </tt>@XmlElement</tt> annotation can be used with the following program
  elements:
  <ul>
    <li> a JavaBean property </li>
    <li> non static, non transient field </li>
    <li> within <a href="../../../../javax/xml/bind/annotation/XmlElements.html" title="annotation in javax.xml.bind.annotation"><code>XmlElements</code></a>
  <p>

  </ul>

  The usage is subject to the following constraints:
  <ul>
    <li> This annotation can be used with following annotations:
             <a href="../../../../javax/xml/bind/annotation/XmlID.html" title="annotation in javax.xml.bind.annotation"><code>XmlID</code></a>,
             <a href="../../../../javax/xml/bind/annotation/XmlIDREF.html" title="annotation in javax.xml.bind.annotation"><code>XmlIDREF</code></a>,
             <a href="../../../../javax/xml/bind/annotation/XmlList.html" title="annotation in javax.xml.bind.annotation"><code>XmlList</code></a>,
             <a href="../../../../javax/xml/bind/annotation/XmlSchemaType.html" title="annotation in javax.xml.bind.annotation"><code>XmlSchemaType</code></a>,
             <a href="../../../../javax/xml/bind/annotation/XmlValue.html" title="annotation in javax.xml.bind.annotation"><code>XmlValue</code></a>,
             <a href="../../../../javax/xml/bind/annotation/XmlAttachmentRef.html" title="annotation in javax.xml.bind.annotation"><code>XmlAttachmentRef</code></a>,
             <a href="../../../../javax/xml/bind/annotation/XmlMimeType.html" title="annotation in javax.xml.bind.annotation"><code>XmlMimeType</code></a>,
             <a href="../../../../javax/xml/bind/annotation/XmlInlineBinaryData.html" title="annotation in javax.xml.bind.annotation"><code>XmlInlineBinaryData</code></a>,
             <a href="../../../../javax/xml/bind/annotation/XmlElementWrapper.html" title="annotation in javax.xml.bind.annotation"><code>XmlElementWrapper</code></a>,
             <a href="../../../../javax/xml/bind/annotation/adapters/XmlJavaTypeAdapter.html" title="annotation in javax.xml.bind.annotation.adapters"><code>XmlJavaTypeAdapter</code></a></li>
    <li> if the type of JavaBean property is a collection type of
         array, an indexed property, or a parameterized list, and
         this annotation is used with <a href="../../../../javax/xml/bind/annotation/XmlElements.html" title="annotation in javax.xml.bind.annotation"><code>XmlElements</code></a> then,
         <tt>@XmlElement.type()</tt> must be DEFAULT.class since the
         collection item type is already known. </li>
  </ul>

  <p>
  A JavaBean property, when annotated with @XmlElement annotation
  is mapped to a local element in the XML Schema complex type to
  which the containing class is mapped.

  <p>
  <b>Example 1: </b> Map a public non static non final field to local
  element
  <pre>
      //Example: Code fragment
      public class USPrice {
          &#64;XmlElement(name="itemprice")
          public java.math.BigDecimal price;
      }

      &lt;!-- Example: Local XML Schema element -->
      &lt;xs:complexType name="USPrice"/>
        &lt;xs:sequence>
          &lt;xs:element name="itemprice" type="xs:decimal" minOccurs="0"/>
        &lt;/sequence>
      &lt;/xs:complexType>
    </pre>
  <p>

  <b> Example 2: </b> Map a field to a nillable element.
    <pre>

      //Example: Code fragment
      public class USPrice {
          &#64;XmlElement(nillable=true)
          public java.math.BigDecimal price;
      }

      &lt;!-- Example: Local XML Schema element -->
      &lt;xs:complexType name="USPrice">
        &lt;xs:sequence>
          &lt;xs:element name="price" type="xs:decimal" nillable="true" minOccurs="0"/>
        &lt;/sequence>
      &lt;/xs:complexType>
    </pre>
  <p>
  <b> Example 3: </b> Map a field to a nillable, required element.
    <pre>

      //Example: Code fragment
      public class USPrice {
          &#64;XmlElement(nillable=true, required=true)
          public java.math.BigDecimal price;
      }

      &lt;!-- Example: Local XML Schema element -->
      &lt;xs:complexType name="USPrice">
        &lt;xs:sequence>
          &lt;xs:element name="price" type="xs:decimal" nillable="true" minOccurs="1"/>
        &lt;/sequence>
      &lt;/xs:complexType>
    </pre>
  <p>

  <p> <b>Example 4: </b>Map a JavaBean property to an XML element
  with anonymous type.</p>
  <p>
  See Example 6 in @<a href="../../../../javax/xml/bind/annotation/XmlType.html" title="annotation in javax.xml.bind.annotation"><code>XmlType</code></a>.

  <p></div>
 <dl><dt><span class="strong">Author:</span></dt>
   <dd>Sekhar Vajjhala, Sun Microsystems, Inc.</dd>
 <dt><span class="strong">Since:</span></dt>
   <dd>JAXB2.0</dd></dl>
 </li>
 </ul>
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 <h3>Optional Element Summary</h3>
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 <caption><span>Optional Elements</span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Modifier and Type</th>
 <th class="colLast" scope="col">Optional Element and Description</th>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>java.lang.String</code></td>
 <td class="colLast"><code><strong><a href="../../../../javax/xml/bind/annotation/XmlElement.html#defaultValue()">defaultValue</a></strong></code>
 <div class="block">Default value of this element.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>java.lang.String</code></td>
 <td class="colLast"><code><strong><a href="../../../../javax/xml/bind/annotation/XmlElement.html#name()">name</a></strong></code>
 <div class="block">Name of the XML Schema element.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>java.lang.String</code></td>
 <td class="colLast"><code><strong><a href="../../../../javax/xml/bind/annotation/XmlElement.html#namespace()">namespace</a></strong></code>
 <div class="block">XML target namespace of the XML Schema element.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><strong><a href="../../../../javax/xml/bind/annotation/XmlElement.html#nillable()">nillable</a></strong></code>
 <div class="block">Customize the element declaration to be nillable.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><strong><a href="../../../../javax/xml/bind/annotation/XmlElement.html#required()">required</a></strong></code>
 <div class="block">Customize the element declaration to be required.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>java.lang.Class</code></td>
 <td class="colLast"><code><strong><a href="../../../../javax/xml/bind/annotation/XmlElement.html#type()">type</a></strong></code>
 <div class="block">The Java class being referenced.</div>
 </td>
 </tr>
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 <pre>public abstract&nbsp;java.lang.String&nbsp;name</pre>
 <div class="block">Name of the XML Schema element.
  <p> If the value is "##default", then element name is derived from the
  JavaBean property name.</div>
 <dl>
 <dt>Default:</dt>
 <dd>"##default"</dd>
 </dl>
 </li>
 </ul>
 <a name="nillable()">
 <!--   -->
 </a>
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 <h4>nillable</h4>
 <pre>public abstract&nbsp;boolean&nbsp;nillable</pre>
 <div class="block">Customize the element declaration to be nillable.
  <p>If nillable() is true, then the JavaBean property is
  mapped to a XML Schema nillable element declaration.</div>
 <dl>
 <dt>Default:</dt>
 <dd>false</dd>
 </dl>
 </li>
 </ul>
 <a name="required()">
 <!--   -->
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 <h4>required</h4>
 <pre>public abstract&nbsp;boolean&nbsp;required</pre>
 <div class="block">Customize the element declaration to be required.
  <p>If required() is true, then Javabean property is mapped to
  an XML schema element declaration with minOccurs="1".
  maxOccurs is "1" for a single valued property and "unbounded"
  for a multivalued property.
  <p>If required() is false, then the Javabean property is mapped
  to XML Schema element declaration with minOccurs="0".
  maxOccurs is "1" for a single valued property and "unbounded"
  for a multivalued property.</div>
 <dl>
 <dt>Default:</dt>
 <dd>false</dd>
 </dl>
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 <h4>namespace</h4>
 <pre>public abstract&nbsp;java.lang.String&nbsp;namespace</pre>
 <div class="block">XML target namespace of the XML Schema element.
  <p>
  If the value is "##default", then the namespace is determined
  as follows:
  <ol>
   <li>
   If the enclosing package has <a href="../../../../javax/xml/bind/annotation/XmlSchema.html" title="annotation in javax.xml.bind.annotation"><code>XmlSchema</code></a> annotation,
   and its <a href="../../../../javax/xml/bind/annotation/XmlSchema.html#elementFormDefault()"><code>elementFormDefault</code></a>
   is <a href="../../../../javax/xml/bind/annotation/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>
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 <h4>defaultValue</h4>
 <pre>public abstract&nbsp;java.lang.String&nbsp;defaultValue</pre>
 <div class="block">Default value of this element.

  <p>
  The '�' 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>
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 <h4>type</h4>
 <pre>public abstract&nbsp;java.lang.Class&nbsp;type</pre>
 <div class="block">The Java class being referenced.</div>
 <dl>
 <dt>Default:</dt>
 <dd>javax.xml.bind.annotation.XmlElement.DEFAULT.class</dd>
 </dl>
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	<div class="subTitle">javax.xml.bind.annotation</div>
	<h2 title="Annotation Type XmlElement" class="title">Annotation Type XmlElement</h2>
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	<pre>@Retention(value=RUNTIME)
	@Target(value={FIELD,METHOD,PARAMETER})
	public @interface <span class="strong">XmlElement</span></pre>
	<div class="block">Maps a JavaBean property to a XML element derived from property name.

	<p> <b>Usage</b> </p>
	<p>
	</tt>@XmlElement</tt> annotation can be used with the following program
	elements:
	<ul>
	<li> a JavaBean property </li>
	<li> non static, non transient field </li>
	<li> within <a href="../../../../javax/xml/bind/annotation/XmlElements.html" title="annotation in javax.xml.bind.annotation"><code>XmlElements</code></a>
	<p>

	</ul>

	The usage is subject to the following constraints:
	<ul>
	<li> This annotation can be used with following annotations:
	<a href="../../../../javax/xml/bind/annotation/XmlID.html" title="annotation in javax.xml.bind.annotation"><code>XmlID</code></a>,
	<a href="../../../../javax/xml/bind/annotation/XmlIDREF.html" title="annotation in javax.xml.bind.annotation"><code>XmlIDREF</code></a>,
	<a href="../../../../javax/xml/bind/annotation/XmlList.html" title="annotation in javax.xml.bind.annotation"><code>XmlList</code></a>,
	<a href="../../../../javax/xml/bind/annotation/XmlSchemaType.html" title="annotation in javax.xml.bind.annotation"><code>XmlSchemaType</code></a>,
	<a href="../../../../javax/xml/bind/annotation/XmlValue.html" title="annotation in javax.xml.bind.annotation"><code>XmlValue</code></a>,
	<a href="../../../../javax/xml/bind/annotation/XmlAttachmentRef.html" title="annotation in javax.xml.bind.annotation"><code>XmlAttachmentRef</code></a>,
	<a href="../../../../javax/xml/bind/annotation/XmlMimeType.html" title="annotation in javax.xml.bind.annotation"><code>XmlMimeType</code></a>,
	<a href="../../../../javax/xml/bind/annotation/XmlInlineBinaryData.html" title="annotation in javax.xml.bind.annotation"><code>XmlInlineBinaryData</code></a>,
	<a href="../../../../javax/xml/bind/annotation/XmlElementWrapper.html" title="annotation in javax.xml.bind.annotation"><code>XmlElementWrapper</code></a>,
	<a href="../../../../javax/xml/bind/annotation/adapters/XmlJavaTypeAdapter.html" title="annotation in javax.xml.bind.annotation.adapters"><code>XmlJavaTypeAdapter</code></a></li>
	<li> if the type of JavaBean property is a collection type of
	array, an indexed property, or a parameterized list, and
	this annotation is used with <a href="../../../../javax/xml/bind/annotation/XmlElements.html" title="annotation in javax.xml.bind.annotation"><code>XmlElements</code></a> then,
	<tt>@XmlElement.type()</tt> must be DEFAULT.class since the
	collection item type is already known. </li>
	</ul>

	<p>
	A JavaBean property, when annotated with @XmlElement annotation
	is mapped to a local element in the XML Schema complex type to
	which the containing class is mapped.

	<p>
	<b>Example 1: </b> Map a public non static non final field to local
	element
	<pre>
	//Example: Code fragment
	public class USPrice {
	@XmlElement(name="itemprice")
	public java.math.BigDecimal price;
	}

	<!-- Example: Local XML Schema element -->
	<xs:complexType name="USPrice"/>
	<xs:sequence>
	<xs:element name="itemprice" type="xs:decimal" minOccurs="0"/>
	</sequence>
	</xs:complexType>
	</pre>
	<p>

	<b> Example 2: </b> Map a field to a nillable element.
	<pre>

	//Example: Code fragment
	public class USPrice {
	@XmlElement(nillable=true)
	public java.math.BigDecimal price;
	}

	<!-- Example: Local XML Schema element -->
	<xs:complexType name="USPrice">
	<xs:sequence>
	<xs:element name="price" type="xs:decimal" nillable="true" minOccurs="0"/>
	</sequence>
	</xs:complexType>
	</pre>
	<p>
	<b> Example 3: </b> Map a field to a nillable, required element.
	<pre>

	//Example: Code fragment
	public class USPrice {
	@XmlElement(nillable=true, required=true)
	public java.math.BigDecimal price;
	}

	<!-- Example: Local XML Schema element -->
	<xs:complexType name="USPrice">
	<xs:sequence>
	<xs:element name="price" type="xs:decimal" nillable="true" minOccurs="1"/>
	</sequence>
	</xs:complexType>
	</pre>
	<p>

	<p> <b>Example 4: </b>Map a JavaBean property to an XML element
	with anonymous type.</p>
	<p>
	See Example 6 in @<a href="../../../../javax/xml/bind/annotation/XmlType.html" title="annotation in javax.xml.bind.annotation"><code>XmlType</code></a>.

	<p></div>
	<dl><dt><span class="strong">Author:</span></dt>
	<dd>Sekhar Vajjhala, Sun Microsystems, Inc.</dd>
	<dt><span class="strong">Since:</span></dt>
	<dd>JAXB2.0</dd></dl>
	</li>
	</ul>
	</div>
	<div class="summary">
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	<li class="blockList">
	<!-- =========== ANNOTATION TYPE OPTIONAL MEMBER SUMMARY =========== -->
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	<li class="blockList"><a name="annotation_type_optional_element_summary">
	<!-- -->
	</a>
	<h3>Optional Element Summary</h3>
	<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Optional Element Summary table, listing optional elements, and an explanation">
	<caption><span>Optional Elements</span><span class="tabEnd"> </span></caption>
	<tr>
	<th class="colFirst" scope="col">Modifier and Type</th>
	<th class="colLast" scope="col">Optional Element and Description</th>
	</tr>
	<tr class="altColor">
	<td class="colFirst"><code>java.lang.String</code></td>
	<td class="colLast"><code><strong><a href="../../../../javax/xml/bind/annotation/XmlElement.html#defaultValue()">defaultValue</a></strong></code>
	<div class="block">Default value of this element.</div>
	</td>
	</tr>
	<tr class="rowColor">
	<td class="colFirst"><code>java.lang.String</code></td>
	<td class="colLast"><code><strong><a href="../../../../javax/xml/bind/annotation/XmlElement.html#name()">name</a></strong></code>
	<div class="block">Name of the XML Schema element.</div>
	</td>
	</tr>
	<tr class="altColor">
	<td class="colFirst"><code>java.lang.String</code></td>
	<td class="colLast"><code><strong><a href="../../../../javax/xml/bind/annotation/XmlElement.html#namespace()">namespace</a></strong></code>
	<div class="block">XML target namespace of the XML Schema element.</div>
	</td>
	</tr>
	<tr class="rowColor">
	<td class="colFirst"><code>boolean</code></td>
	<td class="colLast"><code><strong><a href="../../../../javax/xml/bind/annotation/XmlElement.html#nillable()">nillable</a></strong></code>
	<div class="block">Customize the element declaration to be nillable.</div>
	</td>
	</tr>
	<tr class="altColor">
	<td class="colFirst"><code>boolean</code></td>
	<td class="colLast"><code><strong><a href="../../../../javax/xml/bind/annotation/XmlElement.html#required()">required</a></strong></code>
	<div class="block">Customize the element declaration to be required.</div>
	</td>
	</tr>
	<tr class="rowColor">
	<td class="colFirst"><code>java.lang.Class</code></td>
	<td class="colLast"><code><strong><a href="../../../../javax/xml/bind/annotation/XmlElement.html#type()">type</a></strong></code>
	<div class="block">The Java class being referenced.</div>
	</td>
	</tr>
	</table>
	</li>
	</ul>
	</li>
	</ul>
	</div>
	<div class="details">
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	<li class="blockList"><a name="annotation_type_element_detail">
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	</a>
	<h3>Element Detail</h3>
	<a name="name()">
	<!-- -->
	</a>
	<ul class="blockList">
	<li class="blockList">
	<h4>name</h4>
	<pre>public abstract java.lang.String name</pre>
	<div class="block">Name of the XML Schema element.
	<p> If the value is "##default", then element name is derived from the
	JavaBean property name.</div>
	<dl>
	<dt>Default:</dt>
	<dd>"##default"</dd>
	</dl>
	</li>
	</ul>
	<a name="nillable()">
	<!-- -->
	</a>
	<ul class="blockList">
	<li class="blockList">
	<h4>nillable</h4>
	<pre>public abstract boolean nillable</pre>
	<div class="block">Customize the element declaration to be nillable.
	<p>If nillable() is true, then the JavaBean property is
	mapped to a XML Schema nillable element declaration.</div>
	<dl>
	<dt>Default:</dt>
	<dd>false</dd>
	</dl>
	</li>
	</ul>
	<a name="required()">
	<!-- -->
	</a>
	<ul class="blockList">
	<li class="blockList">
	<h4>required</h4>
	<pre>public abstract boolean required</pre>
	<div class="block">Customize the element declaration to be required.
	<p>If required() is true, then Javabean property is mapped to
	an XML schema element declaration with minOccurs="1".
	maxOccurs is "1" for a single valued property and "unbounded"
	for a multivalued property.
	<p>If required() is false, then the Javabean property is mapped
	to XML Schema element declaration with minOccurs="0".
	maxOccurs is "1" for a single valued property and "unbounded"
	for a multivalued property.</div>
	<dl>
	<dt>Default:</dt>
	<dd>false</dd>
	</dl>
	</li>
	</ul>
	<a name="namespace()">
	<!-- -->
	</a>
	<ul class="blockList">
	<li class="blockList">
	<h4>namespace</h4>
	<pre>public abstract java.lang.String namespace</pre>
	<div class="block">XML target namespace of the XML Schema element.
	<p>
	If the value is "##default", then the namespace is determined
	as follows:
	<ol>
	<li>
	If the enclosing package has <a href="../../../../javax/xml/bind/annotation/XmlSchema.html" title="annotation in javax.xml.bind.annotation"><code>XmlSchema</code></a> annotation,
	and its <a href="../../../../javax/xml/bind/annotation/XmlSchema.html#elementFormDefault()"><code>elementFormDefault</code></a>
	is <a href="../../../../javax/xml/bind/annotation/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>
	<a name="defaultValue()">
	<!-- -->
	</a>
	<ul class="blockList">
	<li class="blockList">
	<h4>defaultValue</h4>
	<pre>public abstract java.lang.String defaultValue</pre>
	<div class="block">Default value of this element.

	<p>
	The '�' 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>
	<a name="type()">
	<!-- -->
	</a>
	<ul class="blockListLast">
	<li class="blockList">
	<h4>type</h4>
	<pre>public abstract java.lang.Class type</pre>
	<div class="block">The Java class being referenced.</div>
	<dl>
	<dt>Default:</dt>
	<dd>javax.xml.bind.annotation.XmlElement.DEFAULT.class</dd>
	</dl>
	</li>
	</ul>
	</li>
	</ul>
	</li>
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