diff options
Diffstat (limited to 'framework/src/maven/apache-maven-3.3.3/maven-core/src/main/java/org/apache/maven/graph/DefaultProjectDependencyGraph.java')
-rw-r--r-- | framework/src/maven/apache-maven-3.3.3/maven-core/src/main/java/org/apache/maven/graph/DefaultProjectDependencyGraph.java | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/framework/src/maven/apache-maven-3.3.3/maven-core/src/main/java/org/apache/maven/graph/DefaultProjectDependencyGraph.java b/framework/src/maven/apache-maven-3.3.3/maven-core/src/main/java/org/apache/maven/graph/DefaultProjectDependencyGraph.java new file mode 100644 index 00000000..01fec339 --- /dev/null +++ b/framework/src/maven/apache-maven-3.3.3/maven-core/src/main/java/org/apache/maven/graph/DefaultProjectDependencyGraph.java @@ -0,0 +1,134 @@ +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.HashSet; +import java.util.List; +import java.util.Set; + +import org.apache.maven.execution.ProjectDependencyGraph; +import org.apache.maven.project.DuplicateProjectException; +import org.apache.maven.project.MavenProject; +import org.apache.maven.project.ProjectSorter; +import org.codehaus.plexus.util.dag.CycleDetectedException; + +/** + * Describes the inter-dependencies between projects in the reactor. + * + * @author Benjamin Bentmann + */ +public class DefaultProjectDependencyGraph + implements ProjectDependencyGraph +{ + + private ProjectSorter sorter; + + /** + * Creates a new project dependency graph based on the specified projects. + * + * @param projects The projects to create the dependency graph with + * @throws DuplicateProjectException + * @throws CycleDetectedException + */ + public DefaultProjectDependencyGraph( Collection<MavenProject> projects ) + throws CycleDetectedException, DuplicateProjectException + { + this.sorter = new ProjectSorter( projects ); + } + + public List<MavenProject> getSortedProjects() + { + return new ArrayList<MavenProject>( sorter.getSortedProjects() ); + } + + public List<MavenProject> getDownstreamProjects( MavenProject project, boolean transitive ) + { + if ( project == null ) + { + throw new IllegalArgumentException( "project missing" ); + } + + Set<String> projectIds = new HashSet<String>(); + + getDownstreamProjects( ProjectSorter.getId( project ), projectIds, transitive ); + + return getSortedProjects( projectIds ); + } + + private void getDownstreamProjects( String projectId, Set<String> projectIds, boolean transitive ) + { + for ( String id : sorter.getDependents( projectId ) ) + { + if ( projectIds.add( id ) && transitive ) + { + getDownstreamProjects( id, projectIds, transitive ); + } + } + } + + public List<MavenProject> getUpstreamProjects( MavenProject project, boolean transitive ) + { + if ( project == null ) + { + throw new IllegalArgumentException( "project missing" ); + } + + Set<String> projectIds = new HashSet<String>(); + + getUpstreamProjects( ProjectSorter.getId( project ), projectIds, transitive ); + + return getSortedProjects( projectIds ); + } + + private void getUpstreamProjects( String projectId, Collection<String> projectIds, boolean transitive ) + { + for ( String id : sorter.getDependencies( projectId ) ) + { + if ( projectIds.add( id ) && transitive ) + { + getUpstreamProjects( id, projectIds, transitive ); + } + } + } + + private List<MavenProject> getSortedProjects( Set<String> projectIds ) + { + List<MavenProject> result = new ArrayList<MavenProject>( projectIds.size() ); + + for ( MavenProject mavenProject : sorter.getSortedProjects() ) + { + if ( projectIds.contains( ProjectSorter.getId( mavenProject ) ) ) + { + result.add( mavenProject ); + } + } + + return result; + } + + @Override + public String toString() + { + return sorter.getSortedProjects().toString(); + } + +} |