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| <div class="subTitle">org.eclipse.persistence.oxm.annotations</div> |
| <h2 title="Annotation Type XmlIsSetNullPolicy" class="title">Annotation Type XmlIsSetNullPolicy</h2> |
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| <pre><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">@Target</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/annotation/Target.html?is-external=true#value--" title="class or interface in java.lang.annotation">value</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">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">METHOD</a>}) |
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| public @interface <span class="memberNameLabel">XmlIsSetNullPolicy</span></pre> |
| <div class="block"><b>Purpose:</b> Provide a means of using annotations to customise the handling of null values |
| and their xml representation. |
| <p>This annotation provides the user with a mechanism to customise the way that EclipseLink |
| handles the reading and writing of null values. This version of NullPolicy makes use of an isSet method to differentiate |
| between values that were explicitly set to null vs values which are null due to being unset. In |
| this case the marshal behaviour specified by the nullRepresentationForXml will only be used if |
| the property was set. A set is only performed during unmarshal if an element was present in the |
| document. The following values can be specified: |
| <ul><li>xsiNilRepresentsNull - This indicates that during unmarshal, an element with an xsi:nil="true" |
| attribute specified should be unmarshaled as "null" into the object.</li> |
| <li>emptyNodeRepresentsNull - This indicates that during unmarshal, an empty node <code>"<element/>"</code> |
| should be unmarshalled to as null in the object model.</li> |
| <li>nullRepresentationForXml - Determines how a null value in the object model is written out |
| to XML. |
| <li>isSetMethodName - The name of the isSet method on the object owning this property. This |
| will be invoked to determine if a value of null was set or unset. </li> |
| <li>isSetMethodParameters - A list of any parameter values and their types to be passed into |
| the isSet method when invoked at runtime. </li></ul></div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../org/eclipse/persistence/oxm/annotations/XmlNullPolicy.html" title="annotation in org.eclipse.persistence.oxm.annotations"><code>XmlNullPolicy</code></a>, |
| <a href="../../../../../org/eclipse/persistence/oxm/annotations/XmlMarshalNullRepresentation.html" title="enum in org.eclipse.persistence.oxm.annotations"><code>XmlMarshalNullRepresentation</code></a>, |
| <a href="../../../../../org/eclipse/persistence/oxm/annotations/XmlParameter.html" title="annotation in org.eclipse.persistence.oxm.annotations"><code>XmlParameter</code></a></dd> |
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| <h3>Required Element Summary</h3> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Required Element and Description</th> |
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| <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">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/eclipse/persistence/oxm/annotations/XmlIsSetNullPolicy.html#isSetMethodName--">isSetMethodName</a></span></code> </td> |
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| <h3>Optional Element Summary</h3> |
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| <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>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/eclipse/persistence/oxm/annotations/XmlIsSetNullPolicy.html#emptyNodeRepresentsNull--">emptyNodeRepresentsNull</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/eclipse/persistence/oxm/annotations/XmlParameter.html" title="annotation in org.eclipse.persistence.oxm.annotations">XmlParameter</a>[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/eclipse/persistence/oxm/annotations/XmlIsSetNullPolicy.html#isSetParameters--">isSetParameters</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/eclipse/persistence/oxm/annotations/XmlMarshalNullRepresentation.html" title="enum in org.eclipse.persistence.oxm.annotations">XmlMarshalNullRepresentation</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/eclipse/persistence/oxm/annotations/XmlIsSetNullPolicy.html#nullRepresentationForXml--">nullRepresentationForXml</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/eclipse/persistence/oxm/annotations/XmlIsSetNullPolicy.html#xsiNilRepresentsNull--">xsiNilRepresentsNull</a></span></code> </td> |
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| <!-- --> |
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| <h3>Element Detail</h3> |
| <a name="isSetMethodName--"> |
| <!-- --> |
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| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>isSetMethodName</h4> |
| <pre>public abstract <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> isSetMethodName</pre> |
| </li> |
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| <!-- ============ ANNOTATION TYPE MEMBER DETAIL =========== --> |
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| <h4>xsiNilRepresentsNull</h4> |
| <pre>public abstract boolean xsiNilRepresentsNull</pre> |
| <dl> |
| <dt>Default:</dt> |
| <dd>false</dd> |
| </dl> |
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| <h4>emptyNodeRepresentsNull</h4> |
| <pre>public abstract boolean emptyNodeRepresentsNull</pre> |
| <dl> |
| <dt>Default:</dt> |
| <dd>false</dd> |
| </dl> |
| </li> |
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| <h4>nullRepresentationForXml</h4> |
| <pre>public abstract <a href="../../../../../org/eclipse/persistence/oxm/annotations/XmlMarshalNullRepresentation.html" title="enum in org.eclipse.persistence.oxm.annotations">XmlMarshalNullRepresentation</a> nullRepresentationForXml</pre> |
| <dl> |
| <dt>Default:</dt> |
| <dd>org.eclipse.persistence.oxm.annotations.XmlMarshalNullRepresentation.ABSENT_NODE</dd> |
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| <h4>isSetParameters</h4> |
| <pre>public abstract <a href="../../../../../org/eclipse/persistence/oxm/annotations/XmlParameter.html" title="annotation in org.eclipse.persistence.oxm.annotations">XmlParameter</a>[] isSetParameters</pre> |
| <dl> |
| <dt>Default:</dt> |
| <dd>{}</dd> |
| </dl> |
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