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From simonetrip...@apache.org
Subject svn commit: r1142519 - /commons/sandbox/graph/trunk/src/main/java/org/apache/commons/graph/model/MutableSpanningTree.java
Date Sun, 03 Jul 2011 23:07:53 GMT
Author: simonetripodi
Date: Sun Jul  3 23:07:53 2011
New Revision: 1142519

URL: http://svn.apache.org/viewvc?rev=1142519&view=rev
Log:
first checkin of MutableSpanningTree class

Added:
    commons/sandbox/graph/trunk/src/main/java/org/apache/commons/graph/model/MutableSpanningTree.java
  (with props)

Added: commons/sandbox/graph/trunk/src/main/java/org/apache/commons/graph/model/MutableSpanningTree.java
URL: http://svn.apache.org/viewvc/commons/sandbox/graph/trunk/src/main/java/org/apache/commons/graph/model/MutableSpanningTree.java?rev=1142519&view=auto
==============================================================================
--- commons/sandbox/graph/trunk/src/main/java/org/apache/commons/graph/model/MutableSpanningTree.java
(added)
+++ commons/sandbox/graph/trunk/src/main/java/org/apache/commons/graph/model/MutableSpanningTree.java
Sun Jul  3 23:07:53 2011
@@ -0,0 +1,66 @@
+package org.apache.commons.graph.model;
+
+/*
+ * 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 org.apache.commons.graph.SpanningTree;
+import org.apache.commons.graph.Vertex;
+import org.apache.commons.graph.WeightedEdge;
+
+/**
+ * A memory-based implementation of a mutable spanning tree.
+ *
+ * @param <V> the Graph vertices type
+ * @param <WE> the Graph weighted edges type
+ */
+public final class MutableSpanningTree<V extends Vertex, WE extends WeightedEdge>
+    extends UndirectedMutableGraph<V, WE>
+    implements SpanningTree<V, WE>
+{
+
+    private Double weight = 0D;
+
+    /**
+     * {@inheritDoc}
+     */
+    public Double getWeight()
+    {
+        return weight;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    protected void decorateAddEdge( V head, WE e, V tail )
+    {
+        super.decorateAddEdge( head, e, tail );
+        weight += e.getWeight();
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    protected void decorateRemoveEdge( WE e )
+    {
+        weight -= e.getWeight();
+    }
+
+}

Propchange: commons/sandbox/graph/trunk/src/main/java/org/apache/commons/graph/model/MutableSpanningTree.java
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Propchange: commons/sandbox/graph/trunk/src/main/java/org/apache/commons/graph/model/MutableSpanningTree.java
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Propchange: commons/sandbox/graph/trunk/src/main/java/org/apache/commons/graph/model/MutableSpanningTree.java
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