src/main/java/org/apache/maven/plugins/dependency/fromDependencies/AbstractDependencyFilterMojo.java - maven-dependency-plugin - Git at Google

 package org.apache.maven.plugins.dependency.fromDependencies;

 /*
  * 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.ArrayList;
 import java.util.Collection;
 import java.util.LinkedHashSet;
 import java.util.Set;

 import org.apache.maven.artifact.Artifact;
 import org.apache.maven.artifact.handler.manager.ArtifactHandlerManager;
 import org.apache.maven.plugin.MojoExecutionException;
 import org.apache.maven.plugins.annotations.Component;
 import org.apache.maven.plugins.annotations.Parameter;
 import org.apache.maven.plugins.dependency.AbstractDependencyMojo;
 import org.apache.maven.plugins.dependency.utils.DependencyStatusSets;
 import org.apache.maven.plugins.dependency.utils.DependencyUtil;
 import org.apache.maven.plugins.dependency.utils.translators.ArtifactTranslator;
 import org.apache.maven.plugins.dependency.utils.translators.ClassifierTypeTranslator;
 import org.apache.maven.project.MavenProject;
 import org.apache.maven.project.ProjectBuilder;
 import org.apache.maven.project.ProjectBuildingException;
 import org.apache.maven.project.ProjectBuildingRequest;
 import org.apache.maven.shared.artifact.filter.collection.ArtifactFilterException;
 import org.apache.maven.shared.artifact.filter.collection.ArtifactIdFilter;
 import org.apache.maven.shared.artifact.filter.collection.ArtifactsFilter;
 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.ProjectTransitivityFilter;
 import org.apache.maven.shared.artifact.filter.collection.ScopeFilter;
 import org.apache.maven.shared.artifact.filter.collection.TypeFilter;
 import org.apache.maven.shared.transfer.artifact.ArtifactCoordinate;
 import org.apache.maven.shared.transfer.artifact.resolve.ArtifactResolver;
 import org.apache.maven.shared.transfer.artifact.resolve.ArtifactResolverException;
 import org.apache.maven.shared.transfer.dependencies.resolve.DependencyResolver;
 import org.apache.maven.shared.transfer.repository.RepositoryManager;
 import org.codehaus.plexus.util.StringUtils;

 /**
  * Class that encapsulates the plugin parameters, and contains methods that handle dependency filtering
  *
  * @author <a href="mailto:brianf@apache.org">Brian Fox</a>
  * @see org.apache.maven.plugins.dependency.AbstractDependencyMojo
  */
 public abstract class AbstractDependencyFilterMojo
     extends AbstractDependencyMojo
 {
     @Component
     private ArtifactResolver artifactResolver;

     @Component
     private DependencyResolver dependencyResolver;

     @Component
     private RepositoryManager repositoryManager;

     /**
      * Overwrite release artifacts
      *
      * @since 1.0
      */
     @Parameter( property = "overWriteReleases", defaultValue = "false" )
     protected boolean overWriteReleases;

     /**
      * Overwrite snapshot artifacts
      *
      * @since 1.0
      */
     @Parameter( property = "overWriteSnapshots", defaultValue = "false" )
     protected boolean overWriteSnapshots;

     /**
      * Overwrite artifacts that don't exist or are older than the source.
      *
      * @since 2.0
      */
     @Parameter( property = "overWriteIfNewer", defaultValue = "true" )
     protected boolean overWriteIfNewer;

     /**
      * If we should exclude transitive dependencies
      *
      * @since 2.0
      */
     @Parameter( property = "excludeTransitive", defaultValue = "false" )
     protected boolean excludeTransitive;

     /**
      * Comma Separated list of Types to include. Empty String indicates include everything (default).
      *
      * @since 2.0
      */
     @Parameter( property = "includeTypes", defaultValue = "" )
     protected String includeTypes;

     /**
      * Comma Separated list of Types to exclude. Empty String indicates don't exclude anything (default).
      *
      * @since 2.0
      */
     @Parameter( property = "excludeTypes", defaultValue = "" )
     protected String excludeTypes;

     /**
      * Scope to include. An Empty string indicates all scopes (default). The scopes being interpreted are the scopes as
      * Maven sees them, not as specified in the pom. In summary:
      * <ul>
      * <li><code>runtime</code> scope gives runtime and compile dependencies,</li>
      * <li><code>compile</code> scope gives compile, provided, and system dependencies,</li>
      * <li><code>test</code> (default) scope gives all dependencies,</li>
      * <li><code>provided</code> scope just gives provided dependencies,</li>
      * <li><code>system</code> scope just gives system dependencies.</li>
      * </ul>
      *
      * @since 2.0
      */
     @Parameter( property = "includeScope", defaultValue = "" )
     protected String includeScope;

     /**
      * Scope to exclude. An Empty string indicates no scopes (default).
      *
      * @since 2.0
      */
     @Parameter( property = "excludeScope", defaultValue = "" )
     protected String excludeScope;

     /**
      * Comma Separated list of Classifiers to include. Empty String indicates include everything (default).
      *
      * @since 2.0
      */
     @Parameter( property = "includeClassifiers", defaultValue = "" )
     protected String includeClassifiers;

     /**
      * Comma Separated list of Classifiers to exclude. Empty String indicates don't exclude anything (default).
      *
      * @since 2.0
      */
     @Parameter( property = "excludeClassifiers", defaultValue = "" )
     protected String excludeClassifiers;

     /**
      * Specify classifier to look for. Example: sources
      *
      * @since 2.0
      */
     @Parameter( property = "classifier", defaultValue = "" )
     protected String classifier;

     /**
      * Specify type to look for when constructing artifact based on classifier. Example: java-source,jar,war
      *
      * @since 2.0
      */
     @Parameter( property = "type", defaultValue = "" )
     protected String type;

     /**
      * Comma separated list of Artifact names to exclude.
      *
      * @since 2.0
      */
     @Parameter( property = "excludeArtifactIds", defaultValue = "" )
     protected String excludeArtifactIds;

     /**
      * Comma separated list of Artifact names to include. Empty String indicates include everything (default).
      *
      * @since 2.0
      */
     @Parameter( property = "includeArtifactIds", defaultValue = "" )
     protected String includeArtifactIds;

     /**
      * Comma separated list of GroupId Names to exclude.
      *
      * @since 2.0
      */
     @Parameter( property = "excludeGroupIds", defaultValue = "" )
     protected String excludeGroupIds;

     /**
      * Comma separated list of GroupIds to include. Empty String indicates include everything (default).
      *
      * @since 2.0
      */
     @Parameter( property = "includeGroupIds", defaultValue = "" )
     protected String includeGroupIds;

     /**
      * Directory to store flag files
      *
      * @since 2.0
      */
     //CHECKSTYLE_OFF: LineLength
     @Parameter( property = "markersDirectory", defaultValue = "${project.build.directory}/dependency-maven-plugin-markers" )
     //CHECKSTYLE_ON: LineLength
     protected File markersDirectory;

     /**
      * Prepend the groupId during copy.
      *
      * @since 2.2
      */
     @Parameter( property = "mdep.prependGroupId", defaultValue = "false" )
     protected boolean prependGroupId = false;

     @Component
     private ProjectBuilder projectBuilder;

     @Component
     private ArtifactHandlerManager artifactHandlerManager;

     /**
      * Return an {@link ArtifactsFilter} indicating which artifacts must be filtered out.
      *
      * @return an {@link ArtifactsFilter} indicating which artifacts must be filtered out.
      */
     protected abstract ArtifactsFilter getMarkedArtifactFilter();

     /**
      * Retrieves dependencies, either direct only or all including transitive.
      *
      * @param stopOnFailure true to fail if resolution does not work or false not to fail.
      * @return A set of artifacts
      * @throws MojoExecutionException in case of errors.
      */
     protected Set<Artifact> getResolvedDependencies( boolean stopOnFailure )
         throws MojoExecutionException

     {
         DependencyStatusSets status = getDependencySets( stopOnFailure );

         return status.getResolvedDependencies();
     }

     /**
      * @param stopOnFailure true/false.
      * @return {@link DependencyStatusSets}
      * @throws MojoExecutionException in case of an error.
      */
     protected DependencyStatusSets getDependencySets( boolean stopOnFailure )
         throws MojoExecutionException
     {
         return getDependencySets( stopOnFailure, false );
     }

     /**
      * Method creates filters and filters the projects dependencies. This method also transforms the dependencies if
      * classifier is set. The dependencies are filtered in least specific to most specific order
      *
      * @param stopOnFailure true to fail if artifacts can't be resolved false otherwise.
      * @param includeParents <code>true</code> if parents should be included or not <code>false</code>.
      * @return DependencyStatusSets - Bean of TreeSets that contains information on the projects dependencies
      * @throws MojoExecutionException in case of errors.
      */
     protected DependencyStatusSets getDependencySets( boolean stopOnFailure, boolean includeParents )
         throws MojoExecutionException
     {
         // add filters in well known order, least specific to most specific
         FilterArtifacts filter = new FilterArtifacts();

         filter.addFilter( new ProjectTransitivityFilter( getProject().getDependencyArtifacts(),
                                                          this.excludeTransitive ) );

         filter.addFilter( new ScopeFilter( DependencyUtil.cleanToBeTokenizedString( this.includeScope ),
                                            DependencyUtil.cleanToBeTokenizedString( this.excludeScope ) ) );

         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 ) ) );

         // start with all artifacts.
         Set<Artifact> artifacts = getProject().getArtifacts();

         if ( includeParents )
         {
             // add dependencies parents
             for ( Artifact dep : new ArrayList<>( artifacts ) )
             {
                 addParentArtifacts( buildProjectFromArtifact( dep ), artifacts );
             }

             // add current project parent
             addParentArtifacts( getProject(), artifacts );
         }

         // perform filtering
         try
         {
             artifacts = filter.filter( artifacts );
         }
         catch ( ArtifactFilterException e )
         {
             throw new MojoExecutionException( e.getMessage(), e );
         }

         // transform artifacts if classifier is set
         DependencyStatusSets status;
         if ( StringUtils.isNotEmpty( classifier ) )
         {
             status = getClassifierTranslatedDependencies( artifacts, stopOnFailure );
         }
         else
         {
             status = filterMarkedDependencies( artifacts );
         }

         return status;
     }

     private MavenProject buildProjectFromArtifact( Artifact artifact )
         throws MojoExecutionException
     {
         try
         {
             return projectBuilder.build( artifact, session.getProjectBuildingRequest() ).getProject();
         }
         catch ( ProjectBuildingException e )
         {
             throw new MojoExecutionException( e.getMessage(), e );
         }
     }

     private void addParentArtifacts( MavenProject project, Set<Artifact> artifacts )
         throws MojoExecutionException
     {
         while ( project.hasParent() )
         {
             project = project.getParent();

             if ( artifacts.contains( project.getArtifact() ) )
             {
                 // artifact already in the set
                 break;
             }
             try
             {
                 ProjectBuildingRequest buildingRequest = newResolveArtifactProjectBuildingRequest();

                 Artifact resolvedArtifact =
                     artifactResolver.resolveArtifact( buildingRequest, project.getArtifact() ).getArtifact();

                 artifacts.add( resolvedArtifact );
             }
             catch ( ArtifactResolverException e )
             {
                 throw new MojoExecutionException( e.getMessage(), e );
             }
         }
     }

     /**
      * Transform artifacts
      *
      * @param artifacts set of artifacts {@link Artifact}.
      * @param stopOnFailure true/false.
      * @return DependencyStatusSets - Bean of TreeSets that contains information on the projects dependencies
      * @throws MojoExecutionException in case of an error.
      */
     protected DependencyStatusSets getClassifierTranslatedDependencies( Set<Artifact> artifacts, boolean stopOnFailure )
         throws MojoExecutionException
     {
         Set<Artifact> unResolvedArtifacts = new LinkedHashSet<>();
         Set<Artifact> resolvedArtifacts = artifacts;
         DependencyStatusSets status = new DependencyStatusSets();

         // possibly translate artifacts into a new set of artifacts based on the
         // classifier and type
         // if this did something, we need to resolve the new artifacts
         if ( StringUtils.isNotEmpty( classifier ) )
         {
             ArtifactTranslator translator =
                 new ClassifierTypeTranslator( artifactHandlerManager, this.classifier, this.type );
             Collection<ArtifactCoordinate> coordinates = translator.translate( artifacts, getLog() );

             status = filterMarkedDependencies( artifacts );

             // the unskipped artifacts are in the resolved set.
             artifacts = status.getResolvedDependencies();

             // resolve the rest of the artifacts
             resolvedArtifacts = resolve( new LinkedHashSet<>( coordinates ), stopOnFailure );

             // calculate the artifacts not resolved.
             unResolvedArtifacts.addAll( artifacts );
             unResolvedArtifacts.removeAll( resolvedArtifacts );
         }

         // return a bean of all 3 sets.
         status.setResolvedDependencies( resolvedArtifacts );
         status.setUnResolvedDependencies( unResolvedArtifacts );

         return status;
     }

     /**
      * Filter the marked dependencies
      *
      * @param artifacts The artifacts set {@link Artifact}.
      * @return status set {@link DependencyStatusSets}.
      * @throws MojoExecutionException in case of an error.
      */
     protected DependencyStatusSets filterMarkedDependencies( Set<Artifact> artifacts )
         throws MojoExecutionException
     {
         // remove files that have markers already
         FilterArtifacts filter = new FilterArtifacts();
         filter.clearFilters();
         filter.addFilter( getMarkedArtifactFilter() );

         Set<Artifact> unMarkedArtifacts;
         try
         {
             unMarkedArtifacts = filter.filter( artifacts );
         }
         catch ( ArtifactFilterException e )
         {
             throw new MojoExecutionException( e.getMessage(), e );
         }

         // calculate the skipped artifacts
         Set<Artifact> skippedArtifacts = new LinkedHashSet<>();
         skippedArtifacts.addAll( artifacts );
         skippedArtifacts.removeAll( unMarkedArtifacts );

         return new DependencyStatusSets( unMarkedArtifacts, null, skippedArtifacts );
     }

     /**
      * @param coordinates The set of artifact coordinates{@link ArtifactCoordinate}.
      * @param stopOnFailure <code>true</code> if we should fail with exception if an artifact couldn't be resolved
      *            <code>false</code> otherwise.
      * @return the resolved artifacts. {@link Artifact}.
      * @throws MojoExecutionException in case of error.
      */
     protected Set<Artifact> resolve( Set<ArtifactCoordinate> coordinates, boolean stopOnFailure )
         throws MojoExecutionException
     {
         ProjectBuildingRequest buildingRequest = newResolveArtifactProjectBuildingRequest();

         Set<Artifact> resolvedArtifacts = new LinkedHashSet<>();
         for ( ArtifactCoordinate coordinate : coordinates )
         {
             try
             {
                 Artifact artifact = artifactResolver.resolveArtifact( buildingRequest, coordinate ).getArtifact();
                 resolvedArtifacts.add( artifact );
             }
             catch ( ArtifactResolverException ex )
             {
                 // an error occurred during resolution, log it an continue
                 getLog().debug( "error resolving: " + coordinate );
                 getLog().debug( ex );
                 if ( stopOnFailure )
                 {
                     throw new MojoExecutionException( "error resolving: " + coordinate, ex );
                 }
             }
         }
         return resolvedArtifacts;
     }

     /**
      * @return Returns the markersDirectory.
      */
     public File getMarkersDirectory()
     {
         return this.markersDirectory;
     }

     /**
      * @param theMarkersDirectory The markersDirectory to set.
      */
     public void setMarkersDirectory( File theMarkersDirectory )
     {
         this.markersDirectory = theMarkersDirectory;
     }

     // TODO: Set marker files.

     /**
      * @return true, if the groupId should be prepended to the filename.
      */
     public boolean isPrependGroupId()
     {
         return prependGroupId;
     }

     /**
      * @param prependGroupId - true if the groupId must be prepended during the copy.
      */
     public void setPrependGroupId( boolean prependGroupId )
     {
         this.prependGroupId = prependGroupId;
     }

     /**
      * @return {@link #artifactResolver}
      */
     protected final ArtifactResolver getArtifactResolver()
     {
         return artifactResolver;
     }

     /**
      * @return {@link #dependencyResolver}
      */
     protected final DependencyResolver getDependencyResolver()
     {
         return dependencyResolver;
     }

     /**
      * @return {@link #repositoryManager}
      */
     protected final RepositoryManager getRepositoryManager()
     {
         return repositoryManager;
     }
 }
	package org.apache.maven.plugins.dependency.fromDependencies;

	/*
	* 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.ArrayList;
	import java.util.Collection;
	import java.util.LinkedHashSet;
	import java.util.Set;

	import org.apache.maven.artifact.Artifact;
	import org.apache.maven.artifact.handler.manager.ArtifactHandlerManager;
	import org.apache.maven.plugin.MojoExecutionException;
	import org.apache.maven.plugins.annotations.Component;
	import org.apache.maven.plugins.annotations.Parameter;
	import org.apache.maven.plugins.dependency.AbstractDependencyMojo;
	import org.apache.maven.plugins.dependency.utils.DependencyStatusSets;
	import org.apache.maven.plugins.dependency.utils.DependencyUtil;
	import org.apache.maven.plugins.dependency.utils.translators.ArtifactTranslator;
	import org.apache.maven.plugins.dependency.utils.translators.ClassifierTypeTranslator;
	import org.apache.maven.project.MavenProject;
	import org.apache.maven.project.ProjectBuilder;
	import org.apache.maven.project.ProjectBuildingException;
	import org.apache.maven.project.ProjectBuildingRequest;
	import org.apache.maven.shared.artifact.filter.collection.ArtifactFilterException;
	import org.apache.maven.shared.artifact.filter.collection.ArtifactIdFilter;
	import org.apache.maven.shared.artifact.filter.collection.ArtifactsFilter;
	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.ProjectTransitivityFilter;
	import org.apache.maven.shared.artifact.filter.collection.ScopeFilter;
	import org.apache.maven.shared.artifact.filter.collection.TypeFilter;
	import org.apache.maven.shared.transfer.artifact.ArtifactCoordinate;
	import org.apache.maven.shared.transfer.artifact.resolve.ArtifactResolver;
	import org.apache.maven.shared.transfer.artifact.resolve.ArtifactResolverException;
	import org.apache.maven.shared.transfer.dependencies.resolve.DependencyResolver;
	import org.apache.maven.shared.transfer.repository.RepositoryManager;
	import org.codehaus.plexus.util.StringUtils;

	/**
	* Class that encapsulates the plugin parameters, and contains methods that handle dependency filtering
	*
	* @author <a href="mailto:brianf@apache.org">Brian Fox</a>
	* @see org.apache.maven.plugins.dependency.AbstractDependencyMojo
	*/
	public abstract class AbstractDependencyFilterMojo
	extends AbstractDependencyMojo
	{
	@Component
	private ArtifactResolver artifactResolver;

	@Component
	private DependencyResolver dependencyResolver;

	@Component
	private RepositoryManager repositoryManager;

	/**
	* Overwrite release artifacts
	*
	* @since 1.0
	*/
	@Parameter( property = "overWriteReleases", defaultValue = "false" )
	protected boolean overWriteReleases;

	/**
	* Overwrite snapshot artifacts
	*
	* @since 1.0
	*/
	@Parameter( property = "overWriteSnapshots", defaultValue = "false" )
	protected boolean overWriteSnapshots;

	/**
	* Overwrite artifacts that don't exist or are older than the source.
	*
	* @since 2.0
	*/
	@Parameter( property = "overWriteIfNewer", defaultValue = "true" )
	protected boolean overWriteIfNewer;

	/**
	* If we should exclude transitive dependencies
	*
	* @since 2.0
	*/
	@Parameter( property = "excludeTransitive", defaultValue = "false" )
	protected boolean excludeTransitive;

	/**
	* Comma Separated list of Types to include. Empty String indicates include everything (default).
	*
	* @since 2.0
	*/
	@Parameter( property = "includeTypes", defaultValue = "" )
	protected String includeTypes;

	/**
	* Comma Separated list of Types to exclude. Empty String indicates don't exclude anything (default).
	*
	* @since 2.0
	*/
	@Parameter( property = "excludeTypes", defaultValue = "" )
	protected String excludeTypes;

	/**
	* Scope to include. An Empty string indicates all scopes (default). The scopes being interpreted are the scopes as
	* Maven sees them, not as specified in the pom. In summary:
	* <ul>
	* <li><code>runtime</code> scope gives runtime and compile dependencies,</li>
	* <li><code>compile</code> scope gives compile, provided, and system dependencies,</li>
	* <li><code>test</code> (default) scope gives all dependencies,</li>
	* <li><code>provided</code> scope just gives provided dependencies,</li>
	* <li><code>system</code> scope just gives system dependencies.</li>
	* </ul>
	*
	* @since 2.0
	*/
	@Parameter( property = "includeScope", defaultValue = "" )
	protected String includeScope;

	/**
	* Scope to exclude. An Empty string indicates no scopes (default).
	*
	* @since 2.0
	*/
	@Parameter( property = "excludeScope", defaultValue = "" )
	protected String excludeScope;

	/**
	* Comma Separated list of Classifiers to include. Empty String indicates include everything (default).
	*
	* @since 2.0
	*/
	@Parameter( property = "includeClassifiers", defaultValue = "" )
	protected String includeClassifiers;

	/**
	* Comma Separated list of Classifiers to exclude. Empty String indicates don't exclude anything (default).
	*
	* @since 2.0
	*/
	@Parameter( property = "excludeClassifiers", defaultValue = "" )
	protected String excludeClassifiers;

	/**
	* Specify classifier to look for. Example: sources
	*
	* @since 2.0
	*/
	@Parameter( property = "classifier", defaultValue = "" )
	protected String classifier;

	/**
	* Specify type to look for when constructing artifact based on classifier. Example: java-source,jar,war
	*
	* @since 2.0
	*/
	@Parameter( property = "type", defaultValue = "" )
	protected String type;

	/**
	* Comma separated list of Artifact names to exclude.
	*
	* @since 2.0
	*/
	@Parameter( property = "excludeArtifactIds", defaultValue = "" )
	protected String excludeArtifactIds;

	/**
	* Comma separated list of Artifact names to include. Empty String indicates include everything (default).
	*
	* @since 2.0
	*/
	@Parameter( property = "includeArtifactIds", defaultValue = "" )
	protected String includeArtifactIds;

	/**
	* Comma separated list of GroupId Names to exclude.
	*
	* @since 2.0
	*/
	@Parameter( property = "excludeGroupIds", defaultValue = "" )
	protected String excludeGroupIds;

	/**
	* Comma separated list of GroupIds to include. Empty String indicates include everything (default).
	*
	* @since 2.0
	*/
	@Parameter( property = "includeGroupIds", defaultValue = "" )
	protected String includeGroupIds;

	/**
	* Directory to store flag files
	*
	* @since 2.0
	*/
	//CHECKSTYLE_OFF: LineLength
	@Parameter( property = "markersDirectory", defaultValue = "${project.build.directory}/dependency-maven-plugin-markers" )
	//CHECKSTYLE_ON: LineLength
	protected File markersDirectory;

	/**
	* Prepend the groupId during copy.
	*
	* @since 2.2
	*/
	@Parameter( property = "mdep.prependGroupId", defaultValue = "false" )
	protected boolean prependGroupId = false;

	@Component
	private ProjectBuilder projectBuilder;

	@Component
	private ArtifactHandlerManager artifactHandlerManager;

	/**
	* Return an {@link ArtifactsFilter} indicating which artifacts must be filtered out.
	*
	* @return an {@link ArtifactsFilter} indicating which artifacts must be filtered out.
	*/
	protected abstract ArtifactsFilter getMarkedArtifactFilter();

	/**
	* Retrieves dependencies, either direct only or all including transitive.
	*
	* @param stopOnFailure true to fail if resolution does not work or false not to fail.
	* @return A set of artifacts
	* @throws MojoExecutionException in case of errors.
	*/
	protected Set<Artifact> getResolvedDependencies( boolean stopOnFailure )
	throws MojoExecutionException

	{
	DependencyStatusSets status = getDependencySets( stopOnFailure );

	return status.getResolvedDependencies();
	}

	/**
	* @param stopOnFailure true/false.
	* @return {@link DependencyStatusSets}
	* @throws MojoExecutionException in case of an error.
	*/
	protected DependencyStatusSets getDependencySets( boolean stopOnFailure )
	throws MojoExecutionException
	{
	return getDependencySets( stopOnFailure, false );
	}

	/**
	* Method creates filters and filters the projects dependencies. This method also transforms the dependencies if
	* classifier is set. The dependencies are filtered in least specific to most specific order
	*
	* @param stopOnFailure true to fail if artifacts can't be resolved false otherwise.
	* @param includeParents <code>true</code> if parents should be included or not <code>false</code>.
	* @return DependencyStatusSets - Bean of TreeSets that contains information on the projects dependencies
	* @throws MojoExecutionException in case of errors.
	*/
	protected DependencyStatusSets getDependencySets( boolean stopOnFailure, boolean includeParents )
	throws MojoExecutionException
	{
	// add filters in well known order, least specific to most specific
	FilterArtifacts filter = new FilterArtifacts();

	filter.addFilter( new ProjectTransitivityFilter( getProject().getDependencyArtifacts(),
	this.excludeTransitive ) );

	filter.addFilter( new ScopeFilter( DependencyUtil.cleanToBeTokenizedString( this.includeScope ),
	DependencyUtil.cleanToBeTokenizedString( this.excludeScope ) ) );

	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 ) ) );

	// start with all artifacts.
	Set<Artifact> artifacts = getProject().getArtifacts();

	if ( includeParents )
	{
	// add dependencies parents
	for ( Artifact dep : new ArrayList<>( artifacts ) )
	{
	addParentArtifacts( buildProjectFromArtifact( dep ), artifacts );
	}

	// add current project parent
	addParentArtifacts( getProject(), artifacts );
	}

	// perform filtering
	try
	{
	artifacts = filter.filter( artifacts );
	}
	catch ( ArtifactFilterException e )
	{
	throw new MojoExecutionException( e.getMessage(), e );
	}

	// transform artifacts if classifier is set
	DependencyStatusSets status;
	if ( StringUtils.isNotEmpty( classifier ) )
	{
	status = getClassifierTranslatedDependencies( artifacts, stopOnFailure );
	}
	else
	{
	status = filterMarkedDependencies( artifacts );
	}

	return status;
	}

	private MavenProject buildProjectFromArtifact( Artifact artifact )
	throws MojoExecutionException
	{
	try
	{
	return projectBuilder.build( artifact, session.getProjectBuildingRequest() ).getProject();
	}
	catch ( ProjectBuildingException e )
	{
	throw new MojoExecutionException( e.getMessage(), e );
	}
	}

	private void addParentArtifacts( MavenProject project, Set<Artifact> artifacts )
	throws MojoExecutionException
	{
	while ( project.hasParent() )
	{
	project = project.getParent();

	if ( artifacts.contains( project.getArtifact() ) )
	{
	// artifact already in the set
	break;
	}
	try
	{
	ProjectBuildingRequest buildingRequest = newResolveArtifactProjectBuildingRequest();

	Artifact resolvedArtifact =
	artifactResolver.resolveArtifact( buildingRequest, project.getArtifact() ).getArtifact();

	artifacts.add( resolvedArtifact );
	}
	catch ( ArtifactResolverException e )
	{
	throw new MojoExecutionException( e.getMessage(), e );
	}
	}
	}

	/**
	* Transform artifacts
	*
	* @param artifacts set of artifacts {@link Artifact}.
	* @param stopOnFailure true/false.
	* @return DependencyStatusSets - Bean of TreeSets that contains information on the projects dependencies
	* @throws MojoExecutionException in case of an error.
	*/
	protected DependencyStatusSets getClassifierTranslatedDependencies( Set<Artifact> artifacts, boolean stopOnFailure )
	throws MojoExecutionException
	{
	Set<Artifact> unResolvedArtifacts = new LinkedHashSet<>();
	Set<Artifact> resolvedArtifacts = artifacts;
	DependencyStatusSets status = new DependencyStatusSets();

	// possibly translate artifacts into a new set of artifacts based on the
	// classifier and type
	// if this did something, we need to resolve the new artifacts
	if ( StringUtils.isNotEmpty( classifier ) )
	{
	ArtifactTranslator translator =
	new ClassifierTypeTranslator( artifactHandlerManager, this.classifier, this.type );
	Collection<ArtifactCoordinate> coordinates = translator.translate( artifacts, getLog() );

	status = filterMarkedDependencies( artifacts );

	// the unskipped artifacts are in the resolved set.
	artifacts = status.getResolvedDependencies();

	// resolve the rest of the artifacts
	resolvedArtifacts = resolve( new LinkedHashSet<>( coordinates ), stopOnFailure );

	// calculate the artifacts not resolved.
	unResolvedArtifacts.addAll( artifacts );
	unResolvedArtifacts.removeAll( resolvedArtifacts );
	}

	// return a bean of all 3 sets.
	status.setResolvedDependencies( resolvedArtifacts );
	status.setUnResolvedDependencies( unResolvedArtifacts );

	return status;
	}

	/**
	* Filter the marked dependencies
	*
	* @param artifacts The artifacts set {@link Artifact}.
	* @return status set {@link DependencyStatusSets}.
	* @throws MojoExecutionException in case of an error.
	*/
	protected DependencyStatusSets filterMarkedDependencies( Set<Artifact> artifacts )
	throws MojoExecutionException
	{
	// remove files that have markers already
	FilterArtifacts filter = new FilterArtifacts();
	filter.clearFilters();
	filter.addFilter( getMarkedArtifactFilter() );

	Set<Artifact> unMarkedArtifacts;
	try
	{
	unMarkedArtifacts = filter.filter( artifacts );
	}
	catch ( ArtifactFilterException e )
	{
	throw new MojoExecutionException( e.getMessage(), e );
	}

	// calculate the skipped artifacts
	Set<Artifact> skippedArtifacts = new LinkedHashSet<>();
	skippedArtifacts.addAll( artifacts );
	skippedArtifacts.removeAll( unMarkedArtifacts );

	return new DependencyStatusSets( unMarkedArtifacts, null, skippedArtifacts );
	}

	/**
	* @param coordinates The set of artifact coordinates{@link ArtifactCoordinate}.
	* @param stopOnFailure <code>true</code> if we should fail with exception if an artifact couldn't be resolved
	* <code>false</code> otherwise.
	* @return the resolved artifacts. {@link Artifact}.
	* @throws MojoExecutionException in case of error.
	*/
	protected Set<Artifact> resolve( Set<ArtifactCoordinate> coordinates, boolean stopOnFailure )
	throws MojoExecutionException
	{
	ProjectBuildingRequest buildingRequest = newResolveArtifactProjectBuildingRequest();

	Set<Artifact> resolvedArtifacts = new LinkedHashSet<>();
	for ( ArtifactCoordinate coordinate : coordinates )
	{
	try
	{
	Artifact artifact = artifactResolver.resolveArtifact( buildingRequest, coordinate ).getArtifact();
	resolvedArtifacts.add( artifact );
	}
	catch ( ArtifactResolverException ex )
	{
	// an error occurred during resolution, log it an continue
	getLog().debug( "error resolving: " + coordinate );
	getLog().debug( ex );
	if ( stopOnFailure )
	{
	throw new MojoExecutionException( "error resolving: " + coordinate, ex );
	}
	}
	}
	return resolvedArtifacts;
	}

	/**
	* @return Returns the markersDirectory.
	*/
	public File getMarkersDirectory()
	{
	return this.markersDirectory;
	}

	/**
	* @param theMarkersDirectory The markersDirectory to set.
	*/
	public void setMarkersDirectory( File theMarkersDirectory )
	{
	this.markersDirectory = theMarkersDirectory;
	}

	// TODO: Set marker files.

	/**
	* @return true, if the groupId should be prepended to the filename.
	*/
	public boolean isPrependGroupId()
	{
	return prependGroupId;
	}

	/**
	* @param prependGroupId - true if the groupId must be prepended during the copy.
	*/
	public void setPrependGroupId( boolean prependGroupId )
	{
	this.prependGroupId = prependGroupId;
	}

	/**
	* @return {@link #artifactResolver}
	*/
	protected final ArtifactResolver getArtifactResolver()
	{
	return artifactResolver;
	}

	/**
	* @return {@link #dependencyResolver}
	*/
	protected final DependencyResolver getDependencyResolver()
	{
	return dependencyResolver;
	}

	/**
	* @return {@link #repositoryManager}
	*/
	protected final RepositoryManager getRepositoryManager()
	{
	return repositoryManager;
	}
	}