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.camel.component.activemq6;
  
  import java.util.Collections;
  import java.util.List;
  import java.util.function.Predicate;
  import java.util.stream.Collectors;
  
  import org.apache.camel.Exchange;
  import org.apache.camel.api.management.ManagedAttribute;
  import org.apache.camel.api.management.ManagedResource;
  import org.apache.camel.component.jms.DefaultQueueBrowseStrategy;
  import org.apache.camel.component.jms.JmsBrowsableEndpoint;
  import org.apache.camel.component.jms.JmsComponent;
  import org.apache.camel.component.jms.JmsConfiguration;
  import org.apache.camel.component.jms.QueueBrowseStrategy;
  import org.apache.camel.spi.BrowsableEndpoint;
  import org.springframework.jms.core.JmsOperations;
  
  /**
   * An endpoint for a JMS Queue which is also browsable
   */
  @ManagedResource(description = "Managed JMS Queue Endpoint")
  public class ActiveMQQueueEndpoint extends ActiveMQEndpoint implements JmsBrowsableEndpoint, BrowsableEndpoint {
      private int maximumBrowseSize = 100;
      private final QueueBrowseStrategy queueBrowseStrategy;
  
      public ActiveMQQueueEndpoint(String uri, JmsComponent component, String destination,
                                   JmsConfiguration configuration) {
          this(uri, component, destination, configuration, null);
          setDestinationType("queue");
      }
  
      public ActiveMQQueueEndpoint(String uri, JmsComponent component, String destination,
                                   JmsConfiguration configuration, QueueBrowseStrategy queueBrowseStrategy) {
          super(uri, component, destination, false, configuration);
          setDestinationType("queue");
          if (queueBrowseStrategy == null) {
              this.queueBrowseStrategy = createQueueBrowseStrategy();
          } else {
              this.queueBrowseStrategy = queueBrowseStrategy;
          }
      }
  
      public ActiveMQQueueEndpoint(String endpointUri, String destination, QueueBrowseStrategy queueBrowseStrategy) {
          super(endpointUri, destination, false);
          setDestinationType("queue");
          if (queueBrowseStrategy == null) {
              this.queueBrowseStrategy = createQueueBrowseStrategy();
          } else {
              this.queueBrowseStrategy = queueBrowseStrategy;
          }
      }
  
      public ActiveMQQueueEndpoint(String endpointUri, String destination) {
          super(endpointUri, destination, false);
          setDestinationType("queue");
          queueBrowseStrategy = createQueueBrowseStrategy();
      }
  
      @ManagedAttribute
      public int getMaximumBrowseSize() {
          return maximumBrowseSize;
      }
  
      /**
       * If a number is set > 0, then this limits the number of messages that are returned when browsing the queue
       */
      @ManagedAttribute
      public void setMaximumBrowseSize(int maximumBrowseSize) {
          this.maximumBrowseSize = maximumBrowseSize;
      }
  
      @Override
      public int getBrowseLimit() {
          return maximumBrowseSize;
      }
  
      @Override
      public void setBrowseLimit(int browseLimit) {
          this.maximumBrowseSize = browseLimit;
      }
  
      @Override
      public List<Exchange> getExchanges() {
          return getExchanges(maximumBrowseSize, null);
      }
  
      @Override
      public List<Exchange> getExchanges(int limit, Predicate filter) {
          if (queueBrowseStrategy == null) {
              return Collections.emptyList();
          }
          String queue = getDestinationName();
          JmsOperations template = getConfiguration().createInOnlyTemplate(this, false, queue);
          List<Exchange> list = queueBrowseStrategy.browse(template, queue, this, limit);
          if (filter != null) {
              list = (List<Exchange>) list.stream().filter(filter).collect(Collectors.toList());
          }
          return list;
      }
  
      protected QueueBrowseStrategy createQueueBrowseStrategy() {
          return new DefaultQueueBrowseStrategy();
      }
  
  }
  