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| <div class="subTitle">org.apache.openjpa.lib.graph</div> |
| <h2 title="Class DepthFirstAnalysis" class="title">Class DepthFirstAnalysis</h2> |
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| <li>org.apache.openjpa.lib.graph.DepthFirstAnalysis</li> |
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| <pre>public class <span class="strong">DepthFirstAnalysis</span> |
| extends <a href="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre> |
| <div class="block"><p>Performs a depth-first analysis of a given <a href="../../../../../org/apache/openjpa/lib/graph/Graph.html" title="class in org.apache.openjpa.lib.graph"><code>Graph</code></a>, caching |
| information about the graph's nodes and edges. See the DFS algorithm |
| in the book 'Introduction to Algorithms' by Cormen, Leiserson, and |
| Rivest. The algorithm has been modified to group sibling nodes without |
| connections together during the topological sort.</p></div> |
| <dl><dt><span class="strong">Since:</span></dt> |
| <dd>1.0.0</dd> |
| <dt><span class="strong">Author:</span></dt> |
| <dd>Abe White</dd></dl> |
| </li> |
| </ul> |
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| <th class="colOne" scope="col">Constructor and Description</th> |
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| <td class="colOne"><code><strong><a href="../../../../../org/apache/openjpa/lib/graph/DepthFirstAnalysis.html#DepthFirstAnalysis(org.apache.openjpa.lib.graph.Graph)">DepthFirstAnalysis</a></strong>(<a href="../../../../../org/apache/openjpa/lib/graph/Graph.html" title="class in org.apache.openjpa.lib.graph">Graph</a> graph)</code> |
| <div class="block">Constructor.</div> |
| </td> |
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| <h3>Method Summary</h3> |
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| <caption><span>Methods</span><span class="tabEnd"> </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><a href="http://download.oracle.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><<a href="../../../../../org/apache/openjpa/lib/graph/Edge.html" title="class in org.apache.openjpa.lib.graph">Edge</a>></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/openjpa/lib/graph/DepthFirstAnalysis.html#getEdges(int)">getEdges</a></strong>(int type)</code> |
| <div class="block">Return all edges of the given type.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/openjpa/lib/graph/DepthFirstAnalysis.html#getFinishedTime(java.lang.Object)">getFinishedTime</a></strong>(<a href="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> node)</code> |
| <div class="block">Return the logical time that the given node was finished in |
| the graph walk, or -1 if the node is not part of the graph.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="http://download.oracle.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/openjpa/lib/graph/DepthFirstAnalysis.html#getSortedNodes()">getSortedNodes</a></strong>()</code> |
| <div class="block">Return the nodes in topologically-sorted order.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/openjpa/lib/graph/DepthFirstAnalysis.html#hasNoCycles()">hasNoCycles</a></strong>()</code> |
| <div class="block">Test, if the analysis didn't find cycles.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/openjpa/lib/graph/DepthFirstAnalysis.html#setNodeComparator(java.util.Comparator)">setNodeComparator</a></strong>(<a href="http://download.oracle.com/javase/6/docs/api/java/util/Comparator.html?is-external=true" title="class or interface in java.util">Comparator</a><<a href="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>> comp)</code> |
| <div class="block">Set the comparator that should be used for ordering groups of nodes |
| with the same dependencies.</div> |
| </td> |
| </tr> |
| </table> |
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| <h3>Methods inherited from class java.lang.<a href="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3> |
| <code><a href="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</a>, <a href="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</a>, <a href="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</a>, <a href="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</a>, <a href="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</a>, <a href="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</a>, <a href="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</a>, <a href="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</a>, <a href="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</a>, <a href="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long,%20int)" title="class or interface in java.lang">wait</a></code></li> |
| </ul> |
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| <h3>Constructor Detail</h3> |
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| <h4>DepthFirstAnalysis</h4> |
| <pre>public DepthFirstAnalysis(<a href="../../../../../org/apache/openjpa/lib/graph/Graph.html" title="class in org.apache.openjpa.lib.graph">Graph</a> graph)</pre> |
| <div class="block">Constructor. Performs the analysis on the given graph and caches |
| the resulting information.</div> |
| </li> |
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| <h4>setNodeComparator</h4> |
| <pre>public void setNodeComparator(<a href="http://download.oracle.com/javase/6/docs/api/java/util/Comparator.html?is-external=true" title="class or interface in java.util">Comparator</a><<a href="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>> comp)</pre> |
| <div class="block">Set the comparator that should be used for ordering groups of nodes |
| with the same dependencies.</div> |
| </li> |
| </ul> |
| <a name="getSortedNodes()"> |
| <!-- --> |
| </a> |
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| <h4>getSortedNodes</h4> |
| <pre>public <a href="http://download.oracle.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>> getSortedNodes()</pre> |
| <div class="block">Return the nodes in topologically-sorted order. This is often used |
| to order dependencies. If each graph edge (u, v) represents a |
| dependency of v on u, then this method will return the nodes in the |
| order that they should be evaluated to satisfy all dependencies. Of |
| course, if the graph is cyclic (has back edges), then no such ordering |
| is possible, though this method will still return the correct order |
| as if edges creating the cycles did not exist.</div> |
| </li> |
| </ul> |
| <a name="getEdges(int)"> |
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| <h4>getEdges</h4> |
| <pre>public <a href="http://download.oracle.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><<a href="../../../../../org/apache/openjpa/lib/graph/Edge.html" title="class in org.apache.openjpa.lib.graph">Edge</a>> getEdges(int type)</pre> |
| <div class="block">Return all edges of the given type. This method can be used to |
| discover all edges that cause cycles in the graph by passing it |
| the <a href="../../../../../org/apache/openjpa/lib/graph/Edge.html#TYPE_BACK"><code>Edge.TYPE_BACK</code></a> or <a href="../../../../../org/apache/openjpa/lib/graph/Edge.html#TYPE_FORWARD"><code>Edge.TYPE_FORWARD</code></a> edge type.</div> |
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| <h4>getFinishedTime</h4> |
| <pre>public int getFinishedTime(<a href="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> node)</pre> |
| <div class="block">Return the logical time that the given node was finished in |
| the graph walk, or -1 if the node is not part of the graph.</div> |
| </li> |
| </ul> |
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| <h4>hasNoCycles</h4> |
| <pre>public boolean hasNoCycles()</pre> |
| <div class="block">Test, if the analysis didn't find cycles.</div> |
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