package org.apache.maven.archiva.dependency.graph.tasks;

 /*

  * 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 org.apache.commons.collections.CollectionUtils;

 import org.apache.maven.archiva.dependency.graph.DependencyGraph;

 import org.apache.maven.archiva.dependency.graph.DependencyGraphBuilder;

 import org.apache.maven.archiva.dependency.graph.DependencyGraphNode;

 import org.apache.maven.archiva.dependency.graph.GraphTask;

 import org.apache.maven.archiva.dependency.graph.PotentialCyclicEdgeProducer;

 import org.apache.maven.archiva.dependency.graph.functors.UnresolvedGraphNodePredicate;

 import org.apache.maven.archiva.model.VersionedReference;

 /**

  * Loop through the unresolved nodes and resolve them, until there

  * are no more unresolved nodes.

  *

  * @version $Id: ResolveGraphTask.java 718864 2008-11-19 06:33:35Z brett $

  */

 public class ResolveGraphTask

     implements GraphTask, PotentialCyclicEdgeProducer

 {

     private DependencyGraphBuilder builder;

     private int resolvedCount = 0;

     private VersionedReference toVersionedReference( DependencyGraphNode node )

     {

         VersionedReference ref = new VersionedReference();

         ref.setGroupId( node.getArtifact().getGroupId() );

         ref.setArtifactId( node.getArtifact().getArtifactId() );

         ref.setVersion( node.getArtifact().getVersion() );

         return ref;

     }

     public void executeTask( DependencyGraph graph )

     {

         resolvedCount = 0;

         VersionedReference rootRef = toVersionedReference( graph.getRootNode() );

         if ( !graph.getRootNode().isResolved() )

         {

             builder.resolveNode( graph, graph.getRootNode(), rootRef );

             resolvedCount++;

         }

         boolean done = false;

         while ( !done )

         {

             DependencyGraphNode node = findUnresolvedNode( graph );

             if ( node == null )

             {

                 done = true;

                 break;

             }

             VersionedReference otherRef = toVersionedReference( node );

             builder.resolveNode( graph, node, otherRef );

             resolvedCount++;

         }

     }

     private DependencyGraphNode findUnresolvedNode( DependencyGraph graph )

     {

         return (DependencyGraphNode) CollectionUtils

             .find( graph.getNodes(), UnresolvedGraphNodePredicate.getInstance() );

     }

     public DependencyGraphBuilder getBuilder()

     {

         return builder;

     }

     public void setBuilder( DependencyGraphBuilder graphBuilder )

     {

         this.builder = graphBuilder;

     }

     public String getTaskId()

     {

         return "resolve-graph";

     }

     public int getResolvedCount()

     {

         return resolvedCount;

     }

 }