package org.eclipse.aether.internal.impl.collect;
   
   /*
    * 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.List;
  
  import org.eclipse.aether.RepositorySystemSession;
  import org.eclipse.aether.RequestTrace;
  import org.eclipse.aether.artifact.Artifact;
  import org.eclipse.aether.collection.CollectResult;
  import org.eclipse.aether.collection.DependencyCollectionContext;
  import org.eclipse.aether.collection.DependencyManager;
  import org.eclipse.aether.collection.DependencySelector;
  import org.eclipse.aether.collection.DependencyTraverser;
  import org.eclipse.aether.collection.VersionFilter;
  import org.eclipse.aether.graph.Dependency;
  import org.eclipse.aether.repository.RemoteRepository;
  import org.eclipse.aether.version.Version;
  
  /**
   * @see DefaultDependencyCollector
   */
  class DefaultDependencyCollectionContext
      implements DependencyCollectionContext
  {
  
      private final RepositorySystemSession session;
  
      private Artifact artifact;
  
      private Dependency dependency;
  
      private List<Dependency> managedDependencies;
      private CollectResult collectResult;
  
      private RequestTrace trace;
  
      private Args args;
  
      private Results results;
  
      private List<Dependency> dependencies;
  
      private List<RemoteRepository> repositories;
  
      private DependencySelector depSelector;
  
      private DependencyManager depManager;
  
      private DependencyTraverser depTraverser;
  
      private VersionFilter verFilter;
  
      private Version version;
  
  
      DefaultDependencyCollectionContext( RepositorySystemSession session, Artifact artifact,
                                          Dependency dependency, List<Dependency> managedDependencies )
      {
          this.session = session;
          this.artifact = ( dependency != null ) ? dependency.getArtifact() : artifact;
          this.dependency = dependency;
          this.managedDependencies = managedDependencies;
      }
  
      public void prepareDescent()
      {
          DependencySelector dependencySelector = session.getDependencySelector();
          DependencyManager dependencyManager = session.getDependencyManager();
          VersionFilter versionFilter = session.getVersionFilter();
          setDepSelector( dependencySelector != null ? dependencySelector.deriveChildSelector( this ) : null );
          setDepManager( dependencyManager != null ? dependencyManager.deriveChildManager( this ) : null );
          setDepTraverser( depTraverser != null ? depTraverser.deriveChildTraverser( this ) : null );
          setVerFilter( versionFilter != null ? versionFilter.deriveChildFilter( this ) : null );
  
      }
  
      public DefaultDependencyCollectionContext createChildContext()
      {
          DefaultDependencyCollectionContext childContext =
                          new DefaultDependencyCollectionContext( getSession(), getArtifact(),
                                                                  getDependency(), getManagedDependencies() );
         childContext.depSelector =
             getDepSelector() != null ? getDepSelector().deriveChildSelector( this ) : null;
         childContext.depManager =
             getDepManager() != null ? getDepManager().deriveChildManager( this ) : null;
         childContext.depTraverser =
             getDepTraverser() != null ? getDepTraverser().deriveChildTraverser( this ) : null;
         childContext.verFilter =
             getVerFilter() != null ? getVerFilter().deriveChildFilter( this ) : null;
         return childContext;
     }
 
     public RepositorySystemSession getSession()
     {
         return session;
     }
 
     public Artifact getArtifact()
     {
         return artifact;
     }
 
     public Dependency getDependency()
     {
         return dependency;
     }
 
     public List<Dependency> getManagedDependencies()
     {
         return managedDependencies;
     }
 
     public CollectResult getCollectResult()
     {
         return collectResult;
     }
 
     public void setCollectResult( CollectResult collectResult )
     {
         this.collectResult = collectResult;
     }
 
     public Args getArgs()
     {
         return args;
     }
 
     public void setArgs( Args args )
     {
         this.args = args;
     }
 
     public Results getResults()
     {
         return results;
     }
 
     public void setResults( Results results )
     {
         this.results = results;
     }
 
     public List<Dependency> getDependencies()
     {
         return dependencies;
     }
 
     public void setDependencies( List<Dependency> dependencies )
     {
         this.dependencies = dependencies;
     }
 
     public List<RemoteRepository> getRepositories()
     {
         return repositories;
     }
 
     public void setRepositories( List<RemoteRepository> repositories )
     {
         this.repositories = repositories;
     }
 
     public DependencySelector getDepSelector()
     {
         return depSelector;
     }
 
     public void setDepSelector( DependencySelector depSelector )
     {
         this.depSelector = depSelector;
     }
 
     public DependencyManager getDepManager()
     {
         return depManager;
     }
 
     public void setDepManager( DependencyManager depManager )
     {
         this.depManager = depManager;
     }
 
     public DependencyTraverser getDepTraverser()
     {
         return depTraverser;
     }
 
     public void setDepTraverser( DependencyTraverser depTraverser )
     {
         this.depTraverser = depTraverser;
     }
 
     public VersionFilter getVerFilter()
     {
         return verFilter;
     }
 
     public void setVerFilter( VersionFilter verFilter )
     {
         this.verFilter = verFilter;
     }
 
     public void setDependency( Dependency dependency )
     {
         artifact = dependency.getArtifact();
         this.dependency = dependency;
     }
 
     public void setManagedDependencies( List<Dependency> managedDependencies )
     {
         this.managedDependencies = managedDependencies;
     }
 
     public RequestTrace getTrace()
     {
         return trace;
     }
 
     public void setTrace( RequestTrace trace )
     {
         this.trace = trace;
     }
 
     public Version getVersion()
     {
         return version;
     }
 
     public void setVersion( Version version )
     {
         this.version = version;
     }
 
     @Override
     public String toString()
     {
         return String.valueOf( getDependency() );
     }
 
 }