| package org.apache.maven.graph; |
| |
| /* |
| * 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.ArrayList; |
| import java.util.Collection; |
| import java.util.IdentityHashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Objects; |
| |
| import org.apache.maven.execution.ProjectDependencyGraph; |
| import org.apache.maven.project.MavenProject; |
| |
| /** |
| * Provides a sub view of another dependency graph. |
| * |
| * @author Benjamin Bentmann |
| */ |
| class FilteredProjectDependencyGraph |
| implements ProjectDependencyGraph |
| { |
| |
| private ProjectDependencyGraph projectDependencyGraph; |
| |
| private Map<MavenProject, ?> whiteList; |
| |
| private List<MavenProject> sortedProjects; |
| |
| /** |
| * Creates a new project dependency graph from the specified graph. |
| * |
| * @param projectDependencyGraph The project dependency graph to create a sub view from, must not be {@code null}. |
| * @param whiteList The projects on which the dependency view should focus, must not be {@code null}. |
| */ |
| FilteredProjectDependencyGraph( ProjectDependencyGraph projectDependencyGraph, |
| Collection<? extends MavenProject> whiteList ) |
| { |
| this.projectDependencyGraph = |
| Objects.requireNonNull( projectDependencyGraph, "projectDependencyGraph cannot be null" ); |
| |
| this.whiteList = new IdentityHashMap<>(); |
| |
| for ( MavenProject project : whiteList ) |
| { |
| this.whiteList.put( project, null ); |
| } |
| } |
| |
| /** |
| * @since 3.5.0 |
| */ |
| public List<MavenProject> getAllProjects() |
| { |
| return this.projectDependencyGraph.getAllProjects(); |
| } |
| |
| public List<MavenProject> getSortedProjects() |
| { |
| if ( sortedProjects == null ) |
| { |
| sortedProjects = applyFilter( projectDependencyGraph.getSortedProjects() ); |
| } |
| |
| return new ArrayList<>( sortedProjects ); |
| } |
| |
| public List<MavenProject> getDownstreamProjects( MavenProject project, boolean transitive ) |
| { |
| return applyFilter( projectDependencyGraph.getDownstreamProjects( project, transitive ) ); |
| } |
| |
| public List<MavenProject> getUpstreamProjects( MavenProject project, boolean transitive ) |
| { |
| return applyFilter( projectDependencyGraph.getUpstreamProjects( project, transitive ) ); |
| } |
| |
| private List<MavenProject> applyFilter( Collection<? extends MavenProject> projects ) |
| { |
| List<MavenProject> filtered = new ArrayList<>( projects.size() ); |
| |
| for ( MavenProject project : projects ) |
| { |
| if ( whiteList.containsKey( project ) ) |
| { |
| filtered.add( project ); |
| } |
| } |
| |
| return filtered; |
| } |
| |
| @Override |
| public String toString() |
| { |
| return getSortedProjects().toString(); |
| } |
| |
| } |