Author: simonetripodi
Date: Fri Nov 18 14:31:24 2011
New Revision: 1203666
URL: http://svn.apache.org/viewvc?rev=1203666&view=rev
Log:
first checkin of KosarajuSharirVisitHandler class
Added:
commons/sandbox/graph/trunk/src/main/java/org/apache/commons/graph/connectedcomponents/KosarajuSharirVisitHandler.java
(with props)
Added:
commons/sandbox/graph/trunk/src/main/java/org/apache/commons/graph/connectedcomponents/KosarajuSharirVisitHandler.java
URL:
http://svn.apache.org/viewvc/commons/sandbox/graph/trunk/src/main/java/org/apache/commons/graph/connectedcomponents/KosarajuSharirVisitHandler.java?rev=1203666&view=auto
==============================================================================
---
commons/sandbox/graph/trunk/src/main/java/org/apache/commons/graph/connectedcomponents/KosarajuSharirVisitHandler.java
(added)
+++
commons/sandbox/graph/trunk/src/main/java/org/apache/commons/graph/connectedcomponents/KosarajuSharirVisitHandler.java
Fri Nov 18 14:31:24 2011
@@ -0,0 +1,69 @@
+package org.apache.commons.graph.connectedcomponents;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.util.LinkedList;
+
+import org.apache.commons.graph.Edge;
+import org.apache.commons.graph.Graph;
+import org.apache.commons.graph.Vertex;
+import org.apache.commons.graph.visit.BaseGraphVisitHandler;
+
+/**
+ * Kosaraju's strongly connected component algorithm is based on DFS (or BFS)
algorithm
+ * and needs to execute specific actions during the visit.
+ *
+ * @param <V> the Graph vertices type.
+ * @param <E> the Graph edges type.
+ */
+final class KosarajuSharirVisitHandler<V extends Vertex, E extends Edge>
+ extends BaseGraphVisitHandler<V, E>
+{
+
+ final V startVisit;
+
+ public KosarajuSharirVisitHandler( final V startVisit )
+ {
+ this.startVisit = startVisit;
+ }
+
+ final LinkedList<V> vertices = new LinkedList<V>();
+
+ /**
+ * {@inheritDoc}
+ */
+ public void finishVertex( V vertex )
+ {
+ if ( !startVisit.equals( vertex ) )
+ {
+ vertices.add( vertex );
+ }
+ }
+
+ @Override
+ public void finishGraph( Graph<V, E> graph )
+ {
+ vertices.add( startVisit );
+
+ // FIXME make sure the vertices order is the one needed by the
algorithm
+ System.out.println( "Visit complete: " + vertices );
+ }
+
+}
Propchange:
commons/sandbox/graph/trunk/src/main/java/org/apache/commons/graph/connectedcomponents/KosarajuSharirVisitHandler.java
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Propchange:
commons/sandbox/graph/trunk/src/main/java/org/apache/commons/graph/connectedcomponents/KosarajuSharirVisitHandler.java
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