package org.apache.maven.plugins.dependency.resolvers;
   
   /*
    * 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.io.File;
  import java.util.LinkedHashSet;
  import java.util.Set;
  
  import org.apache.maven.artifact.Artifact;
  import org.apache.maven.plugins.annotations.Parameter;
  import org.apache.maven.plugins.dependency.fromDependencies.AbstractDependencyFilterMojo;
  import org.apache.maven.plugins.dependency.utils.DependencyUtil;
  import org.apache.maven.project.MavenProject;
  import org.apache.maven.project.ProjectBuildingRequest;
  import org.apache.maven.shared.artifact.filter.collection.ArtifactIdFilter;
  import org.apache.maven.shared.artifact.filter.collection.ClassifierFilter;
  import org.apache.maven.shared.artifact.filter.collection.FilterArtifacts;
  import org.apache.maven.shared.artifact.filter.collection.GroupIdFilter;
  import org.apache.maven.shared.artifact.filter.collection.TypeFilter;
  import org.apache.maven.shared.artifact.resolve.ArtifactResult;
  import org.apache.maven.shared.dependencies.DependableCoordinate;
  import org.apache.maven.shared.dependencies.resolve.DependencyResolverException;
  
  /**
   * @author <a href="mailto:brianf@apache.org">Brian Fox</a>
   */
  public abstract class AbstractResolveMojo
      extends AbstractDependencyFilterMojo
  {
      /**
       * If specified, this parameter will cause the dependencies to be written to the path specified, instead of writing
       * to the console.
       *
       * @since 2.0
       */
      @Parameter( property = "outputFile" )
      protected File outputFile;
  
      /**
       * This method resolves the dependency artifacts from the project.
       *
       * @param theProject The POM.
       * @return resolved set of dependency artifacts.
       * @throws ArtifactResolutionException
       * @throws ArtifactNotFoundException
       * @throws InvalidDependencyVersionException
       */
  
      /**
       * Whether to append outputs into the output file or overwrite it.
       *
       * @since 2.2
       */
      @Parameter( property = "appendOutput", defaultValue = "false" )
      protected boolean appendOutput;
  
      /**
       * Don't resolve plugins that are in the current reactor. Only works for plugins at the moment.
       *
       * @since 2.7
       */
      @Parameter( property = "excludeReactor", defaultValue = "true" )
      protected boolean excludeReactor;
  
      /**
       * <i>not used in this goal</i>
       */
      @Parameter
      protected boolean useJvmChmod = true;
  
      /**
       * <i>not used in this goal</i>
       */
      @Parameter
      protected boolean ignorePermissions;
  
      /**
       * @return {@link FilterArtifacts}
       */
      protected FilterArtifacts getPluginArtifactsFilter()
      {
          if ( excludeReactor )
         {
             final StringBuilder exAids = new StringBuilder();
             if ( this.excludeArtifactIds != null )
             {
                 exAids.append( this.excludeArtifactIds );
             }
 
             for ( final MavenProject rp : reactorProjects )
             {
                 if ( !"maven-plugin".equals( rp.getPackaging() ) )
                 {
                     continue;
                 }
 
                 if ( exAids.length() > 0 )
                 {
                     exAids.append( "," );
                 }
 
                 exAids.append( rp.getArtifactId() );
             }
 
             this.excludeArtifactIds = exAids.toString();
         }
 
         final FilterArtifacts filter = new FilterArtifacts();
 
         //CHECKSTYLE_OFF: LineLength
         filter.addFilter( new org.apache.maven.shared.artifact.filter.collection.ScopeFilter( DependencyUtil.cleanToBeTokenizedString( this.includeScope ),
                                                                                               DependencyUtil.cleanToBeTokenizedString( this.excludeScope ) ) );
         //CHECKSTYLE_ON: LineLength
 
         filter.addFilter( new TypeFilter( DependencyUtil.cleanToBeTokenizedString( this.includeTypes ),
                                           DependencyUtil.cleanToBeTokenizedString( this.excludeTypes ) ) );
 
         filter.addFilter( new ClassifierFilter( DependencyUtil.cleanToBeTokenizedString( this.includeClassifiers ),
                                                 DependencyUtil.cleanToBeTokenizedString( this.excludeClassifiers ) ) );
 
         filter.addFilter( new GroupIdFilter( DependencyUtil.cleanToBeTokenizedString( this.includeGroupIds ),
                                              DependencyUtil.cleanToBeTokenizedString( this.excludeGroupIds ) ) );
 
         filter.addFilter( new ArtifactIdFilter( DependencyUtil.cleanToBeTokenizedString( this.includeArtifactIds ),
                                                 DependencyUtil.cleanToBeTokenizedString( this.excludeArtifactIds ) ) );
 
         return filter;
     }
 
     /**
      * This method resolves all transitive dependencies of an artifact.
      *
      * @param artifact the artifact used to retrieve dependencies
      * @return resolved set of dependencies
      * @throws DependencyResolverException in case of error while resolving artifacts.
      */
     protected Set<Artifact> resolveArtifactDependencies( final DependableCoordinate artifact )
         throws DependencyResolverException
     {
         ProjectBuildingRequest buildingRequest = newResolveArtifactProjectBuildingRequest();
 
         Iterable<ArtifactResult> artifactResults =
             getDependencyResolver().resolveDependencies( buildingRequest, artifact, null );
 
         Set<Artifact> artifacts = new LinkedHashSet<Artifact>();
 
         for ( final ArtifactResult artifactResult : artifactResults )
         {
             artifacts.add( artifactResult.getArtifact() );
         }
 
         return artifacts;
 
     }
 }