| package org.apache.maven.shared.dependency.graph.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 org.apache.maven.artifact.resolver.filter.ArtifactFilter; |
| import org.apache.maven.project.MavenProject; |
| import org.apache.maven.shared.dependency.graph.DependencyGraphBuilder; |
| import org.apache.maven.shared.dependency.graph.DependencyGraphBuilderException; |
| import org.apache.maven.shared.dependency.graph.DependencyNode; |
| import org.codehaus.plexus.PlexusConstants; |
| import org.codehaus.plexus.PlexusContainer; |
| import org.codehaus.plexus.component.annotations.Component; |
| import org.codehaus.plexus.component.repository.exception.ComponentLookupException; |
| import org.codehaus.plexus.context.Context; |
| import org.codehaus.plexus.context.ContextException; |
| import org.codehaus.plexus.logging.AbstractLogEnabled; |
| import org.codehaus.plexus.personality.plexus.lifecycle.phase.Contextualizable; |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| |
| /** |
| * Default dependency graph builder that detects current Maven version to delegate to either Maven 2 or Maven 3 specific |
| * code. |
| * |
| * @see Maven2DependencyGraphBuilder |
| * @see Maven3DependencyGraphBuilder |
| * @author Hervé Boutemy |
| * @since 2.0 |
| */ |
| @Component( role = DependencyGraphBuilder.class ) |
| public class DefaultDependencyGraphBuilder |
| extends AbstractLogEnabled |
| implements DependencyGraphBuilder, Contextualizable |
| { |
| protected PlexusContainer container; |
| |
| /** |
| * Builds a dependency graph. |
| * |
| * @param project the project |
| * @param filter artifact filter (can be <code>null</code>) |
| * @return DependencyNode containing the dependency graph. |
| * @throws DependencyGraphBuilderException if some of the dependencies could not be resolved. |
| */ |
| public DependencyNode buildDependencyGraph( MavenProject project, ArtifactFilter filter ) |
| throws DependencyGraphBuilderException |
| { |
| return buildDependencyGraph( project, filter, Collections.EMPTY_LIST ); |
| } |
| |
| /** |
| * Builds a dependency graph. |
| * |
| * @param project the project |
| * @param filter artifact filter (can be <code>null</code>) |
| * @param reactorProjects Collection of those projects contained in the reactor. |
| * @return DependencyNode containing the dependency graph. |
| * @throws DependencyGraphBuilderException if some of the dependencies could not be resolved. |
| */ |
| public DependencyNode buildDependencyGraph( MavenProject project, ArtifactFilter filter, |
| Collection<MavenProject> reactorProjects ) |
| throws DependencyGraphBuilderException |
| { |
| try |
| { |
| String hint = isMaven31() ? "maven31" : isMaven2x() ? "maven2" : "maven3"; |
| |
| DependencyGraphBuilder effectiveGraphBuilder = |
| (DependencyGraphBuilder) container.lookup( DependencyGraphBuilder.class.getCanonicalName(), hint ); |
| getLogger().debug( "building " + hint + " dependency graph for " + project.getId() + " with " |
| + effectiveGraphBuilder.getClass() ); |
| |
| return effectiveGraphBuilder.buildDependencyGraph( project, filter, reactorProjects ); |
| } |
| catch ( ComponentLookupException e ) |
| { |
| throw new DependencyGraphBuilderException( e.getMessage(), e ); |
| } |
| } |
| |
| /** |
| * @return true if the current Maven is Maven 2.x. |
| */ |
| protected static boolean isMaven2x() |
| { |
| return !canFindCoreClass( "org.apache.maven.project.DependencyResolutionRequest" ); // Maven 3 specific |
| } |
| |
| /** |
| * @return true if the current Maven version is Maven 3.1. |
| */ |
| protected static boolean isMaven31() |
| { |
| return canFindCoreClass( "org.eclipse.aether.artifact.Artifact" ); // Maven 3.1 specific |
| } |
| |
| private static boolean canFindCoreClass( String className ) |
| { |
| try |
| { |
| Thread.currentThread().getContextClassLoader().loadClass( className ); |
| |
| return true; |
| } |
| catch ( ClassNotFoundException e ) |
| { |
| return false; |
| } |
| } |
| |
| /** |
| * Injects the Plexus content. |
| * |
| * @param context Plexus context to inject. |
| * @throws ContextException if the PlexusContainer could not be located. |
| */ |
| public void contextualize( Context context ) |
| throws ContextException |
| { |
| container = (PlexusContainer) context.get( PlexusConstants.PLEXUS_KEY ); |
| } |
| } |