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| <div class="subTitle">org.eclipse.persistence.descriptors</div> |
| <h2 title="Interface WrapperPolicy" class="title">Interface WrapperPolicy</h2> |
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| <dt>All Superinterfaces:</dt> |
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| <pre>public interface <span class="typeNameLabel">WrapperPolicy</span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a></pre> |
| <div class="block"><p><b>Purpose</b>: The wrapper policy can be used to wrap all objects read from the database in another object. |
| This allows for EclipseLink to utilize one version of the class for its purposes and allows for the |
| application to deal with another version of the object. |
| The wrapper policy is used for things such as EJB Entity Beans and is directly used by the |
| TopLink for WebLogic product for EJB Container Managed Persistence. |
| |
| It is assumed that relationships must be through the wrapper objects. |
| Object identity is not maintained on the wrapper objects, only the wrapped object.</div> |
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| <!-- ========== METHOD SUMMARY =========== --> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
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| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/WrapperPolicy.html#initialize-org.eclipse.persistence.internal.sessions.AbstractSession-">initialize</a></span>(org.eclipse.persistence.internal.sessions.AbstractSession session)</code> |
| <div class="block">PUBLIC: |
| Required: Lets the policy perform initialization.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/WrapperPolicy.html#isTraversable--">isTraversable</a></span>()</code> |
| <div class="block">PUBLIC: |
| Required: Return true if the wrapped value should be traversed.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/WrapperPolicy.html#isWrapped-java.lang.Object-">isWrapped</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> object)</code> |
| <div class="block">PUBLIC: |
| Required: Return true if the object is already wrapped.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/WrapperPolicy.html#setDescriptor-org.eclipse.persistence.descriptors.ClassDescriptor-">setDescriptor</a></span>(<a href="../../../../org/eclipse/persistence/descriptors/ClassDescriptor.html" title="class in org.eclipse.persistence.descriptors">ClassDescriptor</a> descriptor)</code> |
| <div class="block">PUBLIC: |
| Required: Set the descriptor.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/WrapperPolicy.html#unwrapObject-java.lang.Object-org.eclipse.persistence.internal.sessions.AbstractSession-">unwrapObject</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> proxy, |
| org.eclipse.persistence.internal.sessions.AbstractSession session)</code> |
| <div class="block">PUBLIC: |
| Required: Unwrap the object to return the implementation that is meant to be used by EclipseLink.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/WrapperPolicy.html#wrapObject-java.lang.Object-org.eclipse.persistence.internal.sessions.AbstractSession-">wrapObject</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> original, |
| org.eclipse.persistence.internal.sessions.AbstractSession session)</code> |
| <div class="block">PUBLIC: |
| Required: Wrap the object to return the implementation that the application requires.</div> |
| </td> |
| </tr> |
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| <!-- ============ METHOD DETAIL ========== --> |
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| <h3>Method Detail</h3> |
| <a name="initialize-org.eclipse.persistence.internal.sessions.AbstractSession-"> |
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| <h4>initialize</h4> |
| <pre>void initialize(org.eclipse.persistence.internal.sessions.AbstractSession session) |
| throws <a href="../../../../org/eclipse/persistence/exceptions/DescriptorException.html" title="class in org.eclipse.persistence.exceptions">DescriptorException</a></pre> |
| <div class="block">PUBLIC: |
| Required: Lets the policy perform initialization.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>session</code> - the session to initialize against</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../org/eclipse/persistence/exceptions/DescriptorException.html" title="class in org.eclipse.persistence.exceptions">DescriptorException</a></code></dd> |
| </dl> |
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| <h4>isTraversable</h4> |
| <pre>boolean isTraversable()</pre> |
| <div class="block">PUBLIC: |
| Required: Return true if the wrapped value should be traversed. |
| Normally the wrapped value is looked after independently, it is not required to be traversed.</div> |
| </li> |
| </ul> |
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| <h4>isWrapped</h4> |
| <pre>boolean isWrapped(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> object)</pre> |
| <div class="block">PUBLIC: |
| Required: Return true if the object is already wrapped.</div> |
| </li> |
| </ul> |
| <a name="setDescriptor-org.eclipse.persistence.descriptors.ClassDescriptor-"> |
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| <h4>setDescriptor</h4> |
| <pre>void setDescriptor(<a href="../../../../org/eclipse/persistence/descriptors/ClassDescriptor.html" title="class in org.eclipse.persistence.descriptors">ClassDescriptor</a> descriptor)</pre> |
| <div class="block">PUBLIC: |
| Required: Set the descriptor.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>descriptor</code> - the descriptor for the object being wrapped</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>unwrapObject</h4> |
| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> unwrapObject(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> proxy, |
| org.eclipse.persistence.internal.sessions.AbstractSession session)</pre> |
| <div class="block">PUBLIC: |
| Required: Unwrap the object to return the implementation that is meant to be used by EclipseLink. |
| The object may already be unwrapped in which case the object should be returned.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>proxy</code> - the wrapped object</dd> |
| <dd><code>session</code> - the session to unwrap into</dd> |
| </dl> |
| </li> |
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| <h4>wrapObject</h4> |
| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> wrapObject(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> original, |
| org.eclipse.persistence.internal.sessions.AbstractSession session)</pre> |
| <div class="block">PUBLIC: |
| Required: Wrap the object to return the implementation that the application requires. |
| The object may already be wrapped in which case the object should be returned.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>original,</code> - the object to be wrapped</dd> |
| <dd><code>session</code> - the session to wrap the object against.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>java.lang.Object the wrapped object</dd> |
| </dl> |
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