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.ra;
  
  /**
   * A helper class used to provide access to the current active
   * {@link InboundContext} instance being used to process a message in the
   * current thread so that messages can be produced using the same session.
   * 
   * 
   */
  public final class InboundContextSupport {
  
      private static final ThreadLocal<InboundContext> THREAD_LOCAL = new ThreadLocal<InboundContext>();
  
      private InboundContextSupport() {
      }
  
      /**
       * Returns the current {@link InboundContext} used by the current thread
       * which is processing a message. This allows us to access the current
       * Session to send a message using the same underlying session to avoid
       * unnecessary XA or to use regular JMS transactions while using message
       * driven POJOs.
       * 
       * @return
       */
      public static InboundContext getActiveSessionAndProducer() {
          return THREAD_LOCAL.get();
      }
  
      /**
       * Registers the session and producer which should be called before the
       * {@link javax.resource.spi.endpoint.MessageEndpoint#beforeDelivery(java.lang.reflect.Method)}
       * method is called.
       * 
       * @param sessionAndProducer
       */
      public static void register(InboundContext sessionAndProducer) {
          THREAD_LOCAL.set(sessionAndProducer);
      }
  
      /**
       * Unregisters the session and producer which should be called after the
       * {@link javax.resource.spi.endpoint.MessageEndpoint#afterDelivery()}
       * method is called.
       * 
       * @param sessionAndProducer
       */
      public static void unregister(InboundContext sessionAndProducer) {
          THREAD_LOCAL.set(null);
      }
  }
  