001/* 002 * Copyright (c) 2016 Chris K Wensel <chris@wensel.net>. All Rights Reserved. 003 * Copyright (c) 2007-2017 Xplenty, Inc. All Rights Reserved. 004 * 005 * Project and contact information: http://www.cascading.org/ 006 * 007 * This file is part of the Cascading project. 008 * 009 * Licensed under the Apache License, Version 2.0 (the "License"); 010 * you may not use this file except in compliance with the License. 011 * You may obtain a copy of the License at 012 * 013 * http://www.apache.org/licenses/LICENSE-2.0 014 * 015 * Unless required by applicable law or agreed to in writing, software 016 * distributed under the License is distributed on an "AS IS" BASIS, 017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 018 * See the License for the specific language governing permissions and 019 * limitations under the License. 020 */ 021 022package cascading.flow.stream.duct; 023 024import org.jgrapht.EdgeFactory; 025import org.jgrapht.graph.DirectedMultigraph; 026 027/** 028 * 029 */ 030public class DuctGraph extends DirectedMultigraph<Duct, DuctGraph.Ordinal> 031 { 032 private static class DuctOrdinalEdgeFactory implements EdgeFactory<Duct, Ordinal> 033 { 034 int count = 0; 035 036 @Override 037 public DuctGraph.Ordinal createEdge( Duct lhs, Duct rhs ) 038 { 039 return makeOrdinal( 0 ); 040 } 041 042 public DuctGraph.Ordinal makeOrdinal( int ordinal ) 043 { 044 return new DuctGraph.Ordinal( count++, ordinal ); 045 } 046 } 047 048 public static class Ordinal 049 { 050 int count; 051 int ordinal; 052 053 public Ordinal( int count, int ordinal ) 054 { 055 this.count = count; 056 this.ordinal = ordinal; 057 } 058 059 public int getOrdinal() 060 { 061 return ordinal; 062 } 063 064 @Override 065 public boolean equals( Object object ) 066 { 067 if( this == object ) 068 return true; 069 070 Ordinal ordinal = (Ordinal) object; 071 072 if( count != ordinal.count ) 073 return false; 074 075 return true; 076 } 077 078 @Override 079 public int hashCode() 080 { 081 return count; 082 } 083 084 @Override 085 public String toString() 086 { 087 final StringBuilder sb = new StringBuilder( "Ordinal{" ); 088 sb.append( "count=" ).append( count ); 089 sb.append( ", ordinal=" ).append( ordinal ); 090 sb.append( '}' ); 091 return sb.toString(); 092 } 093 } 094 095 public DuctGraph() 096 { 097 super( new DuctOrdinalEdgeFactory() ); 098 } 099 100 public synchronized DuctGraph.Ordinal makeOrdinal( int ordinal ) 101 { 102 return ( (DuctOrdinalEdgeFactory) getEdgeFactory() ).makeOrdinal( ordinal ); 103 } 104 }