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

 /*

  * 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.commons.collections.Predicate;

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

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

 /**

  * OrphanedNodePredicate 

  *

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

  */

 public class OrphanedNodePredicate

     implements Predicate

 {

     private DependencyGraph graph;

     public OrphanedNodePredicate( DependencyGraph graph )

     {

         this.graph = graph;

     }

     public boolean evaluate( Object object )

     {

         boolean satisfies = false;

         if ( object instanceof DependencyGraphNode )

         {

             DependencyGraphNode node = (DependencyGraphNode) object;

             satisfies = CollectionUtils.isEmpty( graph.getEdgesTo( node ) );

         }

         return satisfies;

     }

 }