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;
  
  import jakarta.jms.MessageConsumer;
  
  /**
   * An extended JMS interface that adds the ability to be notified when a 
   * message is available for consumption using the receive*() methods
   * which is useful in Ajax style subscription models.
   * 
   * 
   */
  public interface MessageAvailableConsumer extends MessageConsumer {
  
      /**
       * Sets the listener used to notify synchronous consumers that there is a message
       * available so that the {@link MessageConsumer#receiveNoWait()} can be called.
       */
      void setAvailableListener(MessageAvailableListener availableListener);
  
      /**
       * Gets the listener used to notify synchronous consumers that there is a message
       * available so that the {@link MessageConsumer#receiveNoWait()} can be called.
       */
      MessageAvailableListener getAvailableListener();
  }
  