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.activemq.web;
  
  import java.util.Iterator;
  import java.util.Set;
  
  import javax.management.ObjectName;
  import javax.management.QueryExp;
  
  import org.apache.activemq.broker.Broker;
  import org.apache.activemq.broker.BrokerService;
  import org.apache.activemq.broker.jmx.BrokerView;
  import org.apache.activemq.broker.jmx.BrokerViewMBean;
  import org.apache.activemq.broker.jmx.ManagedRegionBroker;
  import org.apache.activemq.broker.jmx.ManagementContext;
  import org.apache.activemq.broker.region.Destination;
  import org.apache.activemq.broker.region.DestinationFilter;
  import org.apache.activemq.broker.region.Queue;
  import org.apache.activemq.command.ActiveMQDestination;
  
  /**
   * An implementation of {@link BrokerFacade} which uses a local in JVM broker
   */
  public class LocalBrokerFacade extends BrokerFacadeSupport {
  
      private final BrokerService brokerService;
  
      public LocalBrokerFacade(BrokerService brokerService) {
          this.brokerService = brokerService;
      }
  
      public BrokerService getBrokerService() {
          return brokerService;
      }
  
      @Override
      public String getBrokerName() throws Exception {
          return brokerService.getBrokerName();
      }
  
      public Broker getBroker() throws Exception {
          return brokerService.getBroker();
      }
  
      @Override
      public ManagementContext getManagementContext() {
          return brokerService.getManagementContext();
      }
  
      @Override
      public BrokerViewMBean getBrokerAdmin() throws Exception {
          return brokerService.getAdminView();
      }
  
      public ManagedRegionBroker getManagedBroker() throws Exception {
          BrokerView adminView = brokerService.getAdminView();
          if (adminView == null) {
              return null;
          }
          return adminView.getBroker();
      }
  
      @Override
      public void purgeQueue(ActiveMQDestination destination) throws Exception {
          Set<Destination> destinations = getManagedBroker().getQueueRegion().getDestinations(destination);
          for (Iterator<Destination> i = destinations.iterator(); i.hasNext();) {
              Destination dest = unwrap(i.next());
              if (dest instanceof Queue) {
                  Queue regionQueue = (Queue) dest;
                  regionQueue.purge();
              }
          }
      }
  
  
      private Destination unwrap(Destination dest) {
          if (dest instanceof DestinationFilter) {
              return unwrap(((DestinationFilter) dest).getNext());
          }
          return dest;
      }
  
      @Override
      public Set queryNames(ObjectName name, QueryExp query) throws Exception {
          return getManagementContext().queryNames(name, query);
      }
  
      @Override
      public Object newProxyInstance(ObjectName objectName, Class interfaceClass, boolean notificationBroadcaster) {
          return getManagementContext().newProxyInstance(objectName, interfaceClass, notificationBroadcaster);
      }
  }
  