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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.cayenne.graph</a></div>
<h2 title="Class GraphMap" class="title">Class GraphMap</h2>
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<dt>All Implemented Interfaces:</dt>
<dd><code><a href="GraphChangeHandler.html" title="interface in org.apache.cayenne.graph">GraphChangeHandler</a></code>, <code><a href="GraphManager.html" title="interface in org.apache.cayenne.graph">GraphManager</a></code></dd>
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<pre>public class <span class="typeNameLabel">GraphMap</span>
extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>
implements <a href="GraphManager.html" title="interface in org.apache.cayenne.graph">GraphManager</a></pre>
<div class="block">A base implementation of GraphManager that stores graph nodes keyed by their ids.
<h3>Tracking Object Changes</h3>
<p>
Registered objects may choose to notify GraphMap of their changes by using callback
methods defined in GraphChangeHandler interface. GraphMap itself implements as noops,
leaving it up to subclasses to handle object updates.
</p></div>
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<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.2</dd>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Field</th>
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<tr class="altColor">
<td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util" class="externalLink">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>,&#8203;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#nodes">nodes</a></span></code></th>
<td class="colLast">&nbsp;</td>
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<th class="colFirst" scope="col">Constructor</th>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">GraphMap</a></span>()</code></th>
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<div class="block">Creates a new GraphMap.</div>
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<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#arcCreated(java.lang.Object,java.lang.Object,org.apache.cayenne.graph.ArcId)">arcCreated</a></span>&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;nodeId,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;targetNodeId,
<a href="ArcId.html" title="class in org.apache.cayenne.graph">ArcId</a>&nbsp;arcId)</code></th>
<td class="colLast">
<div class="block">Notifies implementing object that a new arc was created between two nodes.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#arcDeleted(java.lang.Object,java.lang.Object,org.apache.cayenne.graph.ArcId)">arcDeleted</a></span>&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;nodeId,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;targetNodeId,
<a href="ArcId.html" title="class in org.apache.cayenne.graph">ArcId</a>&nbsp;arcId)</code></th>
<td class="colLast">
<div class="block">Notifies implementing object that an arc between two nodes was deleted.</div>
</td>
</tr>
<tr id="i2" 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" class="externalLink">Object</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getNode(java.lang.Object)">getNode</a></span>&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;nodeId)</code></th>
<td class="colLast">
<div class="block">Returns a graph node given an id.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#nodeCreated(java.lang.Object)">nodeCreated</a></span>&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;nodeId)</code></th>
<td class="colLast">
<div class="block">Notifies implementing object that a new node was created in the graph.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#nodeIdChanged(java.lang.Object,java.lang.Object)">nodeIdChanged</a></span>&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;nodeId,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;newId)</code></th>
<td class="colLast">
<div class="block">Notifies implementing object that a node was assigned a new id.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#nodePropertyChanged(java.lang.Object,java.lang.String,java.lang.Object,java.lang.Object)">nodePropertyChanged</a></span>&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;nodeId,
<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;property,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;oldValue,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;newValue)</code></th>
<td class="colLast">
<div class="block">Notifies implementing object that a node's property was modified.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#nodeRemoved(java.lang.Object)">nodeRemoved</a></span>&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;nodeId)</code></th>
<td class="colLast">
<div class="block">Notifies implementing object that a node was removed from the graph.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#registeredNodes()">registeredNodes</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns an immutable collection of registered nodes.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#registerNode(java.lang.Object,java.lang.Object)">registerNode</a></span>&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;nodeId,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;nodeObject)</code></th>
<td class="colLast">
<div class="block">"Registers" a graph node, usually storing the node in some internal map using its
id as a key.</div>
</td>
</tr>
<tr id="i9" 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" class="externalLink">Object</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#unregisterNode(java.lang.Object)">unregisterNode</a></span>&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;nodeId)</code></th>
<td class="colLast">
<div class="block">"Unregisters" a graph node, forgetting any information associated with nodeId.</div>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></h3>
<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang" class="externalLink">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang" class="externalLink">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang" class="externalLink">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang" class="externalLink">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang" class="externalLink">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang" class="externalLink">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang" class="externalLink">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang" class="externalLink">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait(long,int)" title="class or interface in java.lang" class="externalLink">wait</a></code></li>
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<h4>nodes</h4>
<pre>protected&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util" class="externalLink">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>,&#8203;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&gt; nodes</pre>
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<h4>GraphMap</h4>
<pre>public&nbsp;GraphMap()</pre>
<div class="block">Creates a new GraphMap.</div>
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<h4>registeredNodes</h4>
<pre class="methodSignature">public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&gt;&nbsp;registeredNodes()</pre>
<div class="block">Returns an immutable collection of registered nodes.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="GraphManager.html#registeredNodes()">registeredNodes</a></code>&nbsp;in interface&nbsp;<code><a href="GraphManager.html" title="interface in org.apache.cayenne.graph">GraphManager</a></code></dd>
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<h4>getNode</h4>
<pre class="methodSignature">public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;getNode&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;nodeId)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="GraphManager.html#getNode(java.lang.Object)">GraphManager</a></code></span></div>
<div class="block">Returns a graph node given an id.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="GraphManager.html#getNode(java.lang.Object)">getNode</a></code>&nbsp;in interface&nbsp;<code><a href="GraphManager.html" title="interface in org.apache.cayenne.graph">GraphManager</a></code></dd>
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<h4>registerNode</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;registerNode&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;nodeId,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;nodeObject)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="GraphManager.html#registerNode(java.lang.Object,java.lang.Object)">GraphManager</a></code></span></div>
<div class="block">"Registers" a graph node, usually storing the node in some internal map using its
id as a key.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="GraphManager.html#registerNode(java.lang.Object,java.lang.Object)">registerNode</a></code>&nbsp;in interface&nbsp;<code><a href="GraphManager.html" title="interface in org.apache.cayenne.graph">GraphManager</a></code></dd>
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<h4>unregisterNode</h4>
<pre class="methodSignature">public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;unregisterNode&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;nodeId)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="GraphManager.html#unregisterNode(java.lang.Object)">GraphManager</a></code></span></div>
<div class="block">"Unregisters" a graph node, forgetting any information associated with nodeId.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="GraphManager.html#unregisterNode(java.lang.Object)">unregisterNode</a></code>&nbsp;in interface&nbsp;<code><a href="GraphManager.html" title="interface in org.apache.cayenne.graph">GraphManager</a></code></dd>
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<a id="arcCreated(java.lang.Object,java.lang.Object,org.apache.cayenne.graph.ArcId)">
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<pre class="methodSignature">public&nbsp;void&nbsp;arcCreated&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;nodeId,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;targetNodeId,
<a href="ArcId.html" title="class in org.apache.cayenne.graph">ArcId</a>&nbsp;arcId)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="GraphChangeHandler.html#arcCreated(java.lang.Object,java.lang.Object,org.apache.cayenne.graph.ArcId)">GraphChangeHandler</a></code></span></div>
<div class="block">Notifies implementing object that a new arc was created between two nodes.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="GraphChangeHandler.html#arcCreated(java.lang.Object,java.lang.Object,org.apache.cayenne.graph.ArcId)">arcCreated</a></code>&nbsp;in interface&nbsp;<code><a href="GraphChangeHandler.html" title="interface in org.apache.cayenne.graph">GraphChangeHandler</a></code></dd>
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<pre class="methodSignature">public&nbsp;void&nbsp;arcDeleted&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;nodeId,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;targetNodeId,
<a href="ArcId.html" title="class in org.apache.cayenne.graph">ArcId</a>&nbsp;arcId)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="GraphChangeHandler.html#arcDeleted(java.lang.Object,java.lang.Object,org.apache.cayenne.graph.ArcId)">GraphChangeHandler</a></code></span></div>
<div class="block">Notifies implementing object that an arc between two nodes was deleted.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="GraphChangeHandler.html#arcDeleted(java.lang.Object,java.lang.Object,org.apache.cayenne.graph.ArcId)">arcDeleted</a></code>&nbsp;in interface&nbsp;<code><a href="GraphChangeHandler.html" title="interface in org.apache.cayenne.graph">GraphChangeHandler</a></code></dd>
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<pre class="methodSignature">public&nbsp;void&nbsp;nodeCreated&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;nodeId)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="GraphChangeHandler.html#nodeCreated(java.lang.Object)">GraphChangeHandler</a></code></span></div>
<div class="block">Notifies implementing object that a new node was created in the graph.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="GraphChangeHandler.html#nodeCreated(java.lang.Object)">nodeCreated</a></code>&nbsp;in interface&nbsp;<code><a href="GraphChangeHandler.html" title="interface in org.apache.cayenne.graph">GraphChangeHandler</a></code></dd>
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<pre class="methodSignature">public&nbsp;void&nbsp;nodeRemoved&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;nodeId)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="GraphChangeHandler.html#nodeRemoved(java.lang.Object)">GraphChangeHandler</a></code></span></div>
<div class="block">Notifies implementing object that a node was removed from the graph.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="GraphChangeHandler.html#nodeRemoved(java.lang.Object)">nodeRemoved</a></code>&nbsp;in interface&nbsp;<code><a href="GraphChangeHandler.html" title="interface in org.apache.cayenne.graph">GraphChangeHandler</a></code></dd>
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<pre class="methodSignature">public&nbsp;void&nbsp;nodeIdChanged&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;nodeId,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;newId)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="GraphChangeHandler.html#nodeIdChanged(java.lang.Object,java.lang.Object)">GraphChangeHandler</a></code></span></div>
<div class="block">Notifies implementing object that a node was assigned a new id.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="GraphChangeHandler.html#nodeIdChanged(java.lang.Object,java.lang.Object)">nodeIdChanged</a></code>&nbsp;in interface&nbsp;<code><a href="GraphChangeHandler.html" title="interface in org.apache.cayenne.graph">GraphChangeHandler</a></code></dd>
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<pre class="methodSignature">public&nbsp;void&nbsp;nodePropertyChanged&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;nodeId,
<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;property,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;oldValue,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;newValue)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="GraphChangeHandler.html#nodePropertyChanged(java.lang.Object,java.lang.String,java.lang.Object,java.lang.Object)">GraphChangeHandler</a></code></span></div>
<div class="block">Notifies implementing object that a node's property was modified.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="GraphChangeHandler.html#nodePropertyChanged(java.lang.Object,java.lang.String,java.lang.Object,java.lang.Object)">nodePropertyChanged</a></code>&nbsp;in interface&nbsp;<code><a href="GraphChangeHandler.html" title="interface in org.apache.cayenne.graph">GraphChangeHandler</a></code></dd>
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