001package org.apache.maven.lifecycle.internal;
002
003/*
004 * Licensed to the Apache Software Foundation (ASF) under one
005 * or more contributor license agreements.  See the NOTICE file
006 * distributed with this work for additional information
007 * regarding copyright ownership.  The ASF licenses this file
008 * to you under the Apache License, Version 2.0 (the
009 * "License"); you may not use this file except in compliance
010 * with the License.  You may obtain a copy of the License at
011 *
012 *  http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing,
015 * software distributed under the License is distributed on an
016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017 * KIND, either express or implied.  See the License for the
018 * specific language governing permissions and limitations
019 * under the License.
020 */
021
022import org.apache.maven.execution.MavenSession;
023import org.apache.maven.project.MavenProject;
024import org.codehaus.plexus.component.annotations.Component;
025
026import java.util.ArrayList;
027import java.util.Collections;
028import java.util.List;
029
030/**
031 * @since 3.0
032 * @author Kristian Rosenvold
033 *         This class is not part of any public api and can be changed or deleted without prior notice.
034 */
035@Component( role = BuildListCalculator.class )
036public class BuildListCalculator
037{
038    public ProjectBuildList calculateProjectBuilds( MavenSession session, List<TaskSegment> taskSegments )
039    {
040        List<ProjectSegment> projectBuilds = new ArrayList<ProjectSegment>();
041
042        MavenProject rootProject = session.getTopLevelProject();
043
044        for ( TaskSegment taskSegment : taskSegments )
045        {
046            List<MavenProject> projects;
047
048            if ( taskSegment.isAggregating() )
049            {
050                projects = Collections.singletonList( rootProject );
051            }
052            else
053            {
054                projects = session.getProjects();
055            }
056            for ( MavenProject project : projects )
057            {
058                BuilderCommon.attachToThread( project ); // Not totally sure if this is needed for anything
059                MavenSession copiedSession = session.clone();
060                copiedSession.setCurrentProject( project );
061                projectBuilds.add( new ProjectSegment( project, taskSegment, copiedSession ) );
062            }
063        }
064        return new ProjectBuildList( projectBuilds );
065    }
066}