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package org.apache.maven.repository;
/*
* 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 java.util.ArrayList;
import java.util.List;
/**
* MetadataGraph node - as it's a directed graph - holds adjacency lists for incident and exident nodes
*
* @author Oleg Gusakov
*
*/
public class MetadataGraphNode
{
/** node payload */
MavenArtifactMetadata metadata;
/** nodes, incident to this (depend on me) */
List<MetadataGraphNode> inNodes;
/** nodes, exident to this (I depend on) */
List<MetadataGraphNode> exNodes;
public MetadataGraphNode()
{
inNodes = new ArrayList<MetadataGraphNode>( 4 );
exNodes = new ArrayList<MetadataGraphNode>( 8 );
}
public MetadataGraphNode( MavenArtifactMetadata metadata )
{
this();
this.metadata = metadata;
}
public MetadataGraphNode addIncident( MetadataGraphNode node )
{
inNodes.add( node );
return this;
}
public MetadataGraphNode addExident( MetadataGraphNode node )
{
exNodes.add( node );
return this;
}
@Override
public boolean equals( Object obj )
{
if ( obj == null )
{
return false;
}
if ( MetadataGraphNode.class.isAssignableFrom( obj.getClass() ) )
{
MetadataGraphNode node2 = (MetadataGraphNode) obj;
if ( node2.metadata == null )
{
return metadata == null;
}
return metadata != null && metadata.toString().equals( node2.metadata.toString() );
}
else
{
return super.equals( obj );
}
}
@Override
public int hashCode()
{
if ( metadata == null )
{
return super.hashCode();
}
return metadata.toString().hashCode();
}
}
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