001    package org.apache.commons.graph.visit;
002    
003    /*
004     * Licensed to the Apache Software Foundation (ASF) under one
005     * or more contributor license agreements.  See the NOTICE file
006     * distributed with this work for additional information
007     * regarding copyright ownership.  The ASF licenses this file
008     * to you under the Apache License, Version 2.0 (the
009     * "License"); you may not use this file except in compliance
010     * with the License.  You may obtain a copy of the License at
011     *
012     *   http://www.apache.org/licenses/LICENSE-2.0
013     *
014     * Unless required by applicable law or agreed to in writing,
015     * software distributed under the License is distributed on an
016     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017     * KIND, either express or implied.  See the License for the
018     * specific language governing permissions and limitations
019     * under the License.
020     */
021    
022    import org.apache.commons.graph.Edge;
023    import org.apache.commons.graph.Graph;
024    import org.apache.commons.graph.Vertex;
025    
026    /**
027     * Description of the Interface
028     */
029    public interface GraphVisitHandler<V extends Vertex, E extends Edge<V>>
030    {
031    
032        /**
033         * Description of the Method
034         */
035        void discoverGraph( Graph<V, E> graph );
036    
037        /**
038         * Description of the Method
039         */
040        void discoverVertex( V vertex );
041    
042        /**
043         * Description of the Method
044         */
045        void discoverEdge( E edge );
046    
047        /**
048         * Description of the Method
049         */
050        void finishEdge( E edge );
051    
052        /**
053         * Description of the Method
054         */
055        void finishVertex( V vertex );
056    
057        /**
058         * Description of the Method
059         */
060        void finishGraph( Graph<V, E> graph );
061    
062    }