*
 * @since 3.0
 */
public final class ProjectSegment {
    private final MavenProject project;

    private final TaskSegment taskSegment;

    private final MavenSession session;

    private final List<MavenProject> nonTransitiveUpstreamProjects;

    private final List<MavenProject> transitiveUpstreamProjects;

        for (MavenProject mavenProject : analyzer.getRootSchedulableBuilds()) {
            ProjectSegment projectSegment = projectBuildList.get(mavenProject);
            logger.debug("Scheduling: {}", projectSegment.getProject());
            Callable<ProjectSegment> cb =
                    createBuildCallable(rootSession, projectSegment, reactorContext, taskSegment, duplicateArtifactIds);
            service.submit(cb);
        }

import java.util.concurrent.Future;
import java.util.concurrent.FutureTask;
import java.util.concurrent.TimeUnit;

import org.apache.maven.lifecycle.internal.ProjectSegment;

/**
 */
public class CompletionServiceStub implements CompletionService<ProjectSegment> {
    List<FutureTask<ProjectSegment>> projectBuildFutureTasks = Collections.synchronizedList(new ArrayList<>());

    final boolean finishImmediately;

    public int size() {

 *
 * @since 3.0
 */
public class ProjectBuildList implements Iterable<ProjectSegment> {
    private final List<ProjectSegment> items;

    public ProjectBuildList(List<ProjectSegment> items) {
        this.items = Collections.unmodifiableList(items);
    }

    // TODO Optimize; or maybe just rewrite the whole way aggregating mojos are being run.

                    PluginResolutionException, LifecyclePhaseNotFoundException, LifecycleNotFoundException {
        final List<ProjectSegment> list = getProjectBuilds(session);
        return new ProjectBuildList(list);
    }

    public static List<ProjectSegment> getProjectBuilds(MavenSession session)
            throws InvalidPluginDescriptorException, PluginVersionResolutionException, PluginDescriptorParsingException,

import java.util.List;
import java.util.Set;

import org.apache.maven.execution.ProjectDependencyGraph;
import org.apache.maven.lifecycle.internal.ProjectBuildList;
import org.apache.maven.lifecycle.internal.ProjectSegment;
import org.apache.maven.project.MavenProject;

/**
 * <p>
 * Presents a view of the Dependency Graph that is suited for concurrent building.
 * </p>

        assertEquals(3, taskSegments.size(), "Stub data contains 3 segments");
        assertEquals(6, segments.size(), "Stub data contains 6 items");
        final ProjectSegment build = segments.get(0);
        assertNotNull(build);

        for (ProjectSegment segment : segments) {
            assertSame(session, segment.getSession());
        }
    }

    private static LifecycleTaskSegmentCalculator getTaskSegmentCalculator() {

            return;
        }

        logger.debug("=== REACTOR BUILD PLAN ================================================");

        for (Iterator<ProjectSegment> it = projectBuilds.iterator(); it.hasNext(); ) {
            ProjectSegment projectBuild = it.next();

            logger.debug("Project: " + projectBuild.getProject().getId());
            logger.debug("Tasks:   " + projectBuild.getTaskSegment().getTasks());

 *
 * @since 3.0
 */
@Named
@Singleton
public class BuildListCalculator {
    public ProjectBuildList calculateProjectBuilds(MavenSession session, List<TaskSegment> taskSegments) {
        List<ProjectSegment> projectBuilds = new ArrayList<>();

        MavenProject rootProject = session.getTopLevelProject();

        for (TaskSegment taskSegment : taskSegments) {
            List<MavenProject> projects;

import org.apache.maven.execution.MavenSession;
import org.apache.maven.lifecycle.internal.LifecycleModuleBuilder;
import org.apache.maven.lifecycle.internal.ProjectBuildList;
import org.apache.maven.lifecycle.internal.ProjectSegment;
import org.apache.maven.lifecycle.internal.ReactorBuildStatus;
import org.apache.maven.lifecycle.internal.ReactorContext;
import org.apache.maven.lifecycle.internal.TaskSegment;