package org.apache.maven.lifecycle.internal.builder.singlethreaded;
   
   /*
    * 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.List;
  
  import javax.inject.Inject;
  import javax.inject.Named;
  import javax.inject.Singleton;
  
  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;
  import org.apache.maven.lifecycle.internal.builder.Builder;
  
  /**
   * <p>
   * A {@link Builder} encapsulates a strategy for building a set of Maven projects. The default strategy in Maven builds
   * the the projects serially, but a {@link Builder} can employ any type of concurrency model to build the projects.
   */
  @Named( "singlethreaded" )
  @Singleton
  public class SingleThreadedBuilder
      implements Builder
  {
      private final LifecycleModuleBuilder lifecycleModuleBuilder;
  
      @Inject
      public SingleThreadedBuilder( LifecycleModuleBuilder lifecycleModuleBuilder )
      {
          this.lifecycleModuleBuilder = lifecycleModuleBuilder;
      }
  
      public void build( MavenSession session, ReactorContext reactorContext, ProjectBuildList projectBuilds,
                         List<TaskSegment> taskSegments, ReactorBuildStatus reactorBuildStatus )
      {
          for ( TaskSegment taskSegment : taskSegments )
          {
              for ( ProjectSegment projectBuild : projectBuilds.getByTaskSegment( taskSegment ) )
              {
                  try
                  {
                      lifecycleModuleBuilder.buildProject( session, reactorContext, projectBuild.getProject(),
                                                           taskSegment );
                      if ( reactorBuildStatus.isHalted() )
                      {
                          break;
                      }
                  }
                  catch ( Exception e )
                  {
                      break; // Why are we just ignoring this exception? Are exceptions are being used for flow control
                  }
              }
          }
      }
  }