content: /*
   * 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.
   */
  package org.apache.aries.blueprint.di;
  
  import java.util.List;
  import java.util.concurrent.atomic.AtomicBoolean;
  
  import org.apache.aries.blueprint.container.SatisfiableRecipe;
  import org.apache.aries.blueprint.ext.DependentComponentFactoryMetadata;
  import org.apache.aries.blueprint.services.ExtendedBlueprintContainer;
  
  /**
   * Extends ComponentFactoryRecipe to support the dependency management (SatisfiableRecipe) for custom
   * bean managers (DependentComponentFactoryMetadata instances in this case).
   */
  public class DependentComponentFactoryRecipe extends ComponentFactoryRecipe<DependentComponentFactoryMetadata> 
      implements SatisfiableRecipe, DependentComponentFactoryMetadata.SatisfactionCallback {
  
      private SatisfactionListener listener;
      private AtomicBoolean started = new AtomicBoolean(false);
      
      public DependentComponentFactoryRecipe(
              String name, DependentComponentFactoryMetadata metadata, 
              ExtendedBlueprintContainer container, List<Recipe> dependencies) {
          super(name, metadata, container, dependencies);
      }
  
      @Override
      public boolean isStaticLifecycle() {
          return false;
      }
  
      public String getOsgiFilter() {
          return getMetadata().getDependencyDescriptor();
      }
  
      public boolean isSatisfied() {
          return getMetadata().isSatisfied();
      }
  
      public void start(SatisfactionListener listener) {
          if (started.compareAndSet(false, true)) {
              this.listener = listener;
              getMetadata().startTracking(this);
          }
      }
  
      public void stop() {
          if (started.compareAndSet(true, false)) {
              listener = null;
              getMetadata().stopTracking();
          }
      }
  
      public void notifyChanged() {
          if (listener != null) {
              listener.notifySatisfaction(this);
          }
      }
  
  }
  