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<div class="subTitle">org.apache.cayenne.graph</div>
<h2 title="Interface GraphChangeHandler" class="title">Interface GraphChangeHandler</h2>
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<dt>All Known Subinterfaces:</dt>
<dd><a href="../../../../org/apache/cayenne/graph/GraphManager.html" title="interface in org.apache.cayenne.graph">GraphManager</a></dd>
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<dt>All Known Implementing Classes:</dt>
<dd><a href="../../../../org/apache/cayenne/graph/ChildDiffLoader.html" title="class in org.apache.cayenne.graph">ChildDiffLoader</a>, <a href="../../../../org/apache/cayenne/DataChannelSyncCallbackAction.html" title="class in org.apache.cayenne">DataChannelSyncCallbackAction</a>, <a href="../../../../org/apache/cayenne/graph/GraphMap.html" title="class in org.apache.cayenne.graph">GraphMap</a>, <a href="../../../../org/apache/cayenne/access/NoSyncObjectStore.html" title="class in org.apache.cayenne.access">NoSyncObjectStore</a>, <a href="../../../../org/apache/cayenne/access/ObjectStore.html" title="class in org.apache.cayenne.access">ObjectStore</a></dd>
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<pre>public interface <span class="strong">GraphChangeHandler</span></pre>
<div class="block">Defines callback API that can be used by object graph nodes to notify of their state
changes. Graph nodes can be any objects as long as each node supports a notion of a
unique id within the graph and each directional arc has a unique identifier within its
source node.</div>
<dl><dt><span class="strong">Since:</span></dt>
<dd>1.2</dd></dl>
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<h3>Method Summary</h3>
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<caption><span>Methods</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cayenne/graph/GraphChangeHandler.html#arcCreated(java.lang.Object,%20java.lang.Object,%20java.lang.Object)">arcCreated</a></strong>(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;nodeId,
<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;targetNodeId,
<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;arcId)</code>
<div class="block">Notifies implementing object that a new arc was created between two nodes.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cayenne/graph/GraphChangeHandler.html#arcDeleted(java.lang.Object,%20java.lang.Object,%20java.lang.Object)">arcDeleted</a></strong>(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;nodeId,
<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;targetNodeId,
<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;arcId)</code>
<div class="block">Notifies implementing object that an arc between two nodes was deleted.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cayenne/graph/GraphChangeHandler.html#nodeCreated(java.lang.Object)">nodeCreated</a></strong>(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;nodeId)</code>
<div class="block">Notifies implementing object that a new node was created in the graph.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cayenne/graph/GraphChangeHandler.html#nodeIdChanged(java.lang.Object,%20java.lang.Object)">nodeIdChanged</a></strong>(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;nodeId,
<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;newId)</code>
<div class="block">Notifies implementing object that a node was assigned a new id.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cayenne/graph/GraphChangeHandler.html#nodePropertyChanged(java.lang.Object,%20java.lang.String,%20java.lang.Object,%20java.lang.Object)">nodePropertyChanged</a></strong>(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;nodeId,
<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;property,
<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;oldValue,
<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;newValue)</code>
<div class="block">Notifies implementing object that a node's property was modified.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cayenne/graph/GraphChangeHandler.html#nodeRemoved(java.lang.Object)">nodeRemoved</a></strong>(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;nodeId)</code>
<div class="block">Notifies implementing object that a node was removed from the graph.</div>
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<h3>Method Detail</h3>
<a name="nodeIdChanged(java.lang.Object, java.lang.Object)">
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<h4>nodeIdChanged</h4>
<pre>void&nbsp;nodeIdChanged(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;nodeId,
<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;newId)</pre>
<div class="block">Notifies implementing object that a node was assigned a new id.</div>
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<a name="nodeCreated(java.lang.Object)">
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<h4>nodeCreated</h4>
<pre>void&nbsp;nodeCreated(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;nodeId)</pre>
<div class="block">Notifies implementing object that a new node was created in the graph.</div>
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<a name="nodeRemoved(java.lang.Object)">
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<h4>nodeRemoved</h4>
<pre>void&nbsp;nodeRemoved(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;nodeId)</pre>
<div class="block">Notifies implementing object that a node was removed from the graph.</div>
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<a name="nodePropertyChanged(java.lang.Object, java.lang.String, java.lang.Object, java.lang.Object)">
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<h4>nodePropertyChanged</h4>
<pre>void&nbsp;nodePropertyChanged(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;nodeId,
<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;property,
<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;oldValue,
<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;newValue)</pre>
<div class="block">Notifies implementing object that a node's property was modified.</div>
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<a name="arcCreated(java.lang.Object, java.lang.Object, java.lang.Object)">
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<h4>arcCreated</h4>
<pre>void&nbsp;arcCreated(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;nodeId,
<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;targetNodeId,
<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;arcId)</pre>
<div class="block">Notifies implementing object that a new arc was created between two nodes.</div>
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<a name="arcDeleted(java.lang.Object, java.lang.Object, java.lang.Object)">
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<h4>arcDeleted</h4>
<pre>void&nbsp;arcDeleted(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;nodeId,
<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;targetNodeId,
<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;arcId)</pre>
<div class="block">Notifies implementing object that an arc between two nodes was deleted.</div>
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