001/*
002 * Copyright (c) 2007-2015 Concurrent, Inc. All Rights Reserved.
003 *
004 * Project and contact information: http://www.cascading.org/
005 *
006 * This file is part of the Cascading project.
007 *
008 * Licensed under the Apache License, Version 2.0 (the "License");
009 * you may not use this file except in compliance with the License.
010 * 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, software
015 * distributed under the License is distributed on an "AS IS" BASIS,
016 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
017 * See the License for the specific language governing permissions and
018 * limitations under the License.
019 */
020
021package cascading.flow.planner.iso;
022
023import java.io.File;
024
025import cascading.flow.planner.graph.ElementGraph;
026
027/**
028 *
029 */
030public abstract class GraphResult<R extends ElementGraph>
031  {
032  public abstract ElementGraph getBeginGraph();
033
034  public abstract String getRuleName();
035
036  public abstract R getEndGraph();
037
038  public abstract void writeDOTs( String path );
039
040  protected void writeEndGraph( String path, int count )
041    {
042    if( getEndGraph() != null )
043      {
044      String name = getEndGraph().getClass().getSimpleName();
045      getEndGraph().writeDOT( new File( path, makeFileName( count, name, "end" ) ).toString() );
046      }
047    }
048
049  protected int writeBeginGraph( String path, int count )
050    {
051    if( getBeginGraph() != null )
052      {
053      String name = getBeginGraph().getClass().getSimpleName();
054      getBeginGraph().writeDOT( new File( path, makeFileName( count++, name, "begin" ) ).toString() );
055      }
056
057    return count;
058    }
059
060  protected String makeFileName( int ordinal, String name, String state )
061    {
062    return String.format( "%04d-%s-%s.dot", ordinal, name, state );
063    }
064  }