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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.Collection;
/**
* This is the main graph data structure used by the RepositorySystem to present tree and graph objects.
*
* @author Oleg Gusakov
*
*/
public class MetadataGraph
{
/** all graph nodes */
Collection<MetadataGraphNode> nodes;
/** entry point for tree-like structures */
MetadataGraphNode entry;
public MetadataGraph( MetadataGraphNode entry )
{
this();
this.entry = entry;
}
public MetadataGraph()
{
nodes = new ArrayList<MetadataGraphNode>( 64 );
}
public void addNode( MetadataGraphNode node )
{
nodes.add( node );
}
/**
* find a node by the GAV (metadata)
*
* @param md
* @return
*/
public MetadataGraphNode findNode( MavenArtifactMetadata md )
{
for ( MetadataGraphNode mgn : nodes )
{
if ( mgn.metadata.equals( md ) )
{
return mgn;
}
}
MetadataGraphNode node = new MetadataGraphNode( md );
addNode( node );
return node;
}
/**
* getter
*
* @return
*/
public MetadataGraphNode getEntry()
{
return entry;
}
/**
* getter
*
* @return
*/
public Collection<MetadataGraphNode> getNodes()
{
return nodes;
}
}
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