/*
* Copyright (c) 2007-2014 Concurrent, Inc. All Rights Reserved.
*
* Project and contact information: http://www.cascading.org/
*
* This file is part of the Cascading project.
*
* Licensed 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.
*/
package cascading.flow.planner.graph;
import cascading.flow.FlowElement;
import cascading.flow.planner.Scope;
import cascading.util.EnumMultiMap;
import cascading.util.Util;
import org.jgrapht.DirectedGraph;
import org.jgrapht.Graph;
import org.jgrapht.graph.DirectedMultigraph;
/**
*
*/
public class ElementMultiGraph extends DirectedMultigraph<FlowElement, Scope> implements ElementGraph, AnnotatedGraph
{
protected EnumMultiMap annotations;
public ElementMultiGraph( DirectedGraph<FlowElement, Scope> parent )
{
this();
copyFrom( parent );
if( parent instanceof AnnotatedGraph && ( ( (AnnotatedGraph) parent ) ).hasAnnotations() )
this.getAnnotations().addAll( ( (AnnotatedGraph) parent ).getAnnotations() );
}
protected void copyFrom( DirectedGraph<FlowElement, Scope> parent )
{
// safe to assume there are no unconnected vertices
for( Scope edge : parent.edgeSet() )
{
FlowElement s = parent.getEdgeSource( edge );
FlowElement t = parent.getEdgeTarget( edge );
addVertex( s );
addVertex( t );
addEdge( s, t, edge );
}
}
public ElementMultiGraph( ElementGraph parent, EnumMultiMap annotations )
{
this( parent );
this.getAnnotations().addAll( annotations );
}
public ElementMultiGraph()
{
super( Scope.class );
}
@Override
public ElementGraph copyGraph()
{
return new ElementMultiGraph( this );
}
@Override
public void writeDOT( String filename )
{
boolean success = ElementGraphs.printElementGraph( filename, this, null );
if( success )
Util.writePDF( filename );
}
@Override
public boolean hasAnnotations()
{
return annotations != null && !annotations.isEmpty();
}
@Override
public EnumMultiMap getAnnotations()
{
if( annotations == null )
annotations = new EnumMultiMap();
return annotations;
}
@Override
public boolean equals( Object object )
{
return ElementGraphs.equals( this, (Graph) object );
}
@Override
public int hashCode()
{
int result = super.hashCode();
result = 31 * result + ( annotations != null ? annotations.hashCode() : 0 );
return result;
}
}