package org.apache.maven.shared.dependency.tree;

/*
 * Copyright 2006 The Apache Software Foundation.
 *
 * 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.
 */

import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;

/**
 * Represents a Maven project's dependency tree.
 * 
 * @author <a href="mailto:markhobson@gmail.com">Mark Hobson</a>
 * @version $Id$
 */
public class DependencyTree
{
    // fields -----------------------------------------------------------------

    private final DependencyNode rootNode;

    private final Collection nodes;

    // constructors -----------------------------------------------------------

    public DependencyTree( DependencyNode rootNode, Collection nodes )
    {
        this.rootNode = rootNode;
        this.nodes = nodes;
    }

    // public methods ---------------------------------------------------------

    public DependencyNode getRootNode()
    {
        return rootNode;
    }

    public Collection getNodes()
    {
        return nodes;
    }

    public List getArtifacts()
    {
        List artifacts = new ArrayList();

        Iterator it = nodes.iterator();
        while ( it.hasNext() )
        {
            DependencyNode node = (DependencyNode) it.next();
            artifacts.add( node.getArtifact() );
        }

        return artifacts;
    }
}