package org.apache.maven.shared.transfer.dependencies.collect.internal;
   
   /*
    * 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;
  
  import org.apache.maven.RepositoryUtils;
  import org.apache.maven.artifact.Artifact;
  import org.apache.maven.artifact.repository.ArtifactRepository;
  import org.apache.maven.shared.transfer.dependencies.collect.DependencyCollectorException;
  import org.apache.maven.shared.transfer.graph.DependencyNode;
  import org.apache.maven.shared.transfer.graph.DependencyVisitor;
  import org.eclipse.aether.repository.RemoteRepository;
  
  /**
   * DependencyCollectorNode wrapper around {@link org.eclipse.aether.graph.DependencyNode}
   *
   * @author Pim Moerenhout
   *
   */
  class Maven31DependencyNodeAdapter implements DependencyNode
  {
  
      private org.eclipse.aether.graph.DependencyNode dependencyNode;
  
      /**
       * @param dependencyNode {@link org.eclipse.aether.graph.DependencyNode}
       */
      Maven31DependencyNodeAdapter( org.eclipse.aether.graph.DependencyNode dependencyNode )
      {
          this.dependencyNode = dependencyNode;
      }
  
      @Override
      public Artifact getArtifact()
      {
          return getArtifact( dependencyNode.getArtifact() );
      }
  
      @Override
      public List<DependencyNode> getChildren()
      {
          List<org.eclipse.aether.graph.DependencyNode> aetherChildren = dependencyNode.getChildren();
          List<DependencyNode> children = new ArrayList<>( aetherChildren.size() );
          for ( org.eclipse.aether.graph.DependencyNode aetherChild : aetherChildren )
          {
              children.add( new Maven31DependencyNodeAdapter( aetherChild ) );
          }
          return children;
      }
  
      @Override
      public List<ArtifactRepository> getRemoteRepositories()
      {
          List<RemoteRepository> aetherRepositories = dependencyNode.getRepositories();
          List<ArtifactRepository> mavenRepositories = new ArrayList<>( aetherRepositories.size() );
  
          for ( RemoteRepository aetherRepository : aetherRepositories )
          {
              mavenRepositories.add( new Maven31ArtifactRepositoryAdapter( aetherRepository ) );
          }
  
          return mavenRepositories;
      }
  
      @Override
      public String getScope()
      {
          return dependencyNode.getDependency().getScope();
      }
  
      @Override
      public Boolean getOptional()
      {
          return dependencyNode.getDependency().getOptional();
      }
  
      @Override
      public boolean accept( DependencyVisitor visitor )
      {
          if ( visitor.visitEnter( this ) )
         {
             for ( org.eclipse.aether.graph.DependencyNode child : dependencyNode.getChildren() )
             {
                 DependencyNode node = new Maven31DependencyNodeAdapter( child );
                 if ( !node.accept( visitor ) )
                 {
                     break;
                 }
             }
         }
 
         return visitor.visitLeave( this );
     }
 
     @Override
     public int hashCode()
     {
         return dependencyNode.hashCode();
     }
 
     @Override
     public boolean equals( Object obj )
     {
         if ( this == obj )
         {
             return true;
         }
         if ( obj == null )
         {
             return false;
         }
         if ( getClass() != obj.getClass() )
         {
             return false;
         }
 
         Maven31DependencyNodeAdapter other = (Maven31DependencyNodeAdapter) obj;
         if ( dependencyNode == null )
         {
             if ( other.dependencyNode != null )
             {
                 return false;
             }
         }
         else if ( !dependencyNode.equals( other.dependencyNode ) )
         {
             return false;
         }
         return true;
     }
 
     private Artifact getArtifact( org.eclipse.aether.artifact.Artifact aetherArtifact )
     {
         try
         {
             return Invoker.invoke( RepositoryUtils.class, "toArtifact",
                 org.eclipse.aether.artifact.Artifact.class, aetherArtifact );
         }
         catch ( DependencyCollectorException e )
         {
             throw new RuntimeException( e );
         }
     }
 }