package org.apache.maven.repository.metadata;
   
   /*
    * 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.maven.artifact.ArtifactScopeEnum;
  import org.codehaus.plexus.PlexusContainer;
  import org.codehaus.plexus.component.repository.exception.ComponentLookupException;
  
  /**
   * This object is tinted with ClasspathTransformation and GraphConflictResolver.
   * Get rid of them after debugging
   *
   * @author <a href="oleg@codehaus.org">Oleg Gusakov</a>
   */
  public class MetadataResolutionResult
  {
      MetadataTreeNode treeRoot;
  
      /**
       * these components are are initialized on demand by
       * explicit call of the initTreeProcessing()
       */
      ClasspathTransformation classpathTransformation;
      GraphConflictResolver conflictResolver;
  
      //----------------------------------------------------------------------------
      public MetadataResolutionResult( )
      {
      }
      //----------------------------------------------------------------------------
      public MetadataResolutionResult( MetadataTreeNode root )
      {
          this.treeRoot = root;
      }
      //----------------------------------------------------------------------------
      public MetadataTreeNode getTree()
      {
          return treeRoot;
      }
      //----------------------------------------------------------------------------
      public void setTree( MetadataTreeNode root )
      {
          this.treeRoot = root;
      }
  
      public void initTreeProcessing( PlexusContainer plexus )
          throws ComponentLookupException
      {
          classpathTransformation = plexus.lookup( ClasspathTransformation.class );
          conflictResolver = plexus.lookup( GraphConflictResolver.class );
      }
      //----------------------------------------------------------------------------
      public MetadataGraph getGraph()
          throws MetadataResolutionException
      {
          return treeRoot == null ? null : new MetadataGraph( treeRoot );
      }
      //----------------------------------------------------------------------------
      public MetadataGraph getGraph( ArtifactScopeEnum scope )
          throws MetadataResolutionException, GraphConflictResolutionException
      {
          if ( treeRoot == null )
          {
              return null;
          }
  
          if ( conflictResolver == null )
          {
              return null;
          }
  
          return conflictResolver.resolveConflicts( getGraph(), scope );
      }
      //----------------------------------------------------------------------------
      public MetadataGraph getGraph( MetadataResolutionRequestTypeEnum requestType )
          throws MetadataResolutionException, GraphConflictResolutionException
      {
          if ( requestType == null )
          {
              return null;
          }
  
         if ( treeRoot == null )
         {
             return null;
         }
 
         if ( conflictResolver == null )
         {
             return null;
         }
 
         if ( requestType.equals( MetadataResolutionRequestTypeEnum.classpathCompile ) )
         {
             return conflictResolver.resolveConflicts( getGraph(), ArtifactScopeEnum.compile );
         }
         else if ( requestType.equals( MetadataResolutionRequestTypeEnum.classpathRuntime ) )
         {
             return conflictResolver.resolveConflicts( getGraph(), ArtifactScopeEnum.runtime );
         }
         else if ( requestType.equals( MetadataResolutionRequestTypeEnum.classpathTest ) )
         {
             return conflictResolver.resolveConflicts( getGraph(), ArtifactScopeEnum.test );
         }
         else if ( requestType.equals( MetadataResolutionRequestTypeEnum.graph ) )
         {
             return getGraph();
         }
         else if ( requestType.equals( MetadataResolutionRequestTypeEnum.versionedGraph ) )
         {
             return new MetadataGraph( getTree(), true, false );
         }
         else if ( requestType.equals( MetadataResolutionRequestTypeEnum.scopedGraph ) )
         {
             return new MetadataGraph( getTree(), true, true );
         }
         return null;
     }
     //----------------------------------------------------------------------------
     public ClasspathContainer getClasspath( ArtifactScopeEnum scope )
         throws MetadataGraphTransformationException, MetadataResolutionException
     {
         if ( classpathTransformation == null )
         {
             return null;
         }
 
         MetadataGraph dirtyGraph = getGraph();
         if ( dirtyGraph == null )
         {
             return null;
         }
 
         return classpathTransformation.transform( dirtyGraph, scope, false );
     }
 
     //----------------------------------------------------------------------------
     public MetadataTreeNode getClasspathTree( ArtifactScopeEnum scope )
         throws MetadataGraphTransformationException, MetadataResolutionException
     {
         ClasspathContainer cpc = getClasspath( scope );
         if ( cpc == null )
         {
             return null;
         }
 
         return cpc.getClasspathAsTree();
     }
     //----------------------------------------------------------------------------
     //----------------------------------------------------------------------------
 }