Package org.apache.axis.ime.internal.util.handler

Source Code of org.apache.axis.ime.internal.util.handler.HandlerMessageExchange$Listener

/*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 2001-2003 The Apache Software Foundation.  All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in
*    the documentation and/or other materials provided with the
*    distribution.
*
* 3. The end-user documentation included with the redistribution,
*    if any, must include the following acknowledgment:
*       "This product includes software developed by the
*        Apache Software Foundation (http://www.apache.org/)."
*    Alternately, this acknowledgment may appear in the software itself,
*    if and wherever such third-party acknowledgments normally appear.
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* 4. The names "Axis" and "Apache Software Foundation" must
*    not be used to endorse or promote products derived from this
*    software without prior written permission. For written
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* 5. Products derived from this software may not be called "Apache",
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation.  For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/

package org.apache.axis.ime.internal.util.handler;

import org.apache.axis.Handler;
import org.apache.axis.MessageContext;
import org.apache.axis.TargetedChain;
import org.apache.axis.components.logger.LogFactory;
import org.apache.axis.ime.MessageExchangeCorrelator;
import org.apache.axis.ime.MessageExchangeEvent;
import org.apache.axis.ime.MessageExchangeEventListener;
import org.apache.axis.ime.event.MessageFaultEvent;
import org.apache.axis.ime.event.MessageSendEvent;
import org.apache.axis.ime.internal.FirstComeFirstServeDispatchPolicy;
import org.apache.axis.ime.internal.MessageExchangeProvider;
import org.apache.axis.ime.internal.MessageExchangeSendContext;
import org.apache.axis.ime.internal.ReceivedMessageDispatchPolicy;
import org.apache.commons.logging.Log;

import java.util.Hashtable;

/**
* Used to wrap synchronous handlers (e.g. Axis 1.0 transports)
*
* @author James M Snell (jasnell@us.ibm.com)
*/
public class HandlerMessageExchange
        extends MessageExchangeProvider {

    protected static Log log =
        LogFactory.getLog(HandlerMessageExchange.class.getName());

    private Handler handler;

    public HandlerMessageExchange(Handler handler) {
        this.handler = handler;
    }

    /**
     * @see org.apache.axis.ime.internal.MessageExchangeProvider1#createSendMessageContextListener()
     */
    protected MessageExchangeEventListener getMessageExchangeEventListener() {
        return new Listener(handler);
    }

    protected ReceivedMessageDispatchPolicy getReceivedMessageDispatchPolicy() {
        return new FirstComeFirstServeDispatchPolicy(
            RECEIVE,
            RECEIVE_REQUESTS);
    }

    public Handler getSendHandler() {
      Handler h = super.getSendHandler();
      if (h == null && handler instanceof TargetedChain) {
        h = ((TargetedChain)handler).getRequestHandler();
      }
      return h;
    }
   
    public Handler getReceiveHandler() {
      Handler h = super.getReceiveHandler();
      if (h == null && handler instanceof TargetedChain) {
        h = ((TargetedChain)handler).getResponseHandler();
      }
      return h;
    }

    public class Listener
            implements MessageExchangeEventListener {

        private Handler handler;

        public Listener(Handler handler) {
            this.handler = handler;
        }

        /**
         * @see org.apache.axis.ime.MessageExchangeContextListener#onMessageExchangeContext(MessageExchangeContext)
         */
        public void onEvent(
                MessageExchangeEvent event) {
            if (!(event instanceof MessageSendEvent))
                return;
           
            MessageSendEvent sendEvent = (MessageSendEvent)event;
            MessageExchangeSendContext context = sendEvent.getMessageExchangeSendContext();
           
            if (log.isDebugEnabled()) {
                log.debug("Enter: HandlerMessageExchange.Listener::onSend");
            }
            MessageExchangeEventListener listener =
                context.getMessageExchangeEventListener();
            try {
                MessageContext msgContext =
                        context.getMessageContext();
                MessageExchangeCorrelator correlator =
                        context.getMessageExchangeCorrelator();
           
                if (handler instanceof TargetedChain) {
                  ((TargetedChain)handler).getPivotHandler().invoke(msgContext);
                } else {
                  handler.invoke(msgContext);
                }


                RECEIVE.put(correlator, context);
            } catch (Exception exception) {
                if (listener != null) {
                    MessageFaultEvent faultEvent = new MessageFaultEvent(
                            context.getMessageExchangeCorrelator(),
                            exception);
                    listener.onEvent(faultEvent);
                }
            } finally {
                if (log.isDebugEnabled()) {
                    log.debug("Exit: HandlerMessageExchange.Listener::onSend");
                }
            }
        }
    }
   
  public void clearOptions() {
    handler.setOptions(null);
  }

  public Hashtable getOptions() {
    return handler.getOptions();
  }

  public Object getOption(String propertyId, Object defaultValue) {
    Object value = getOption(propertyId);
    return (value == null) ? defaultValue : value;
  }

  public Object getOption(String propertyId) {
    return handler.getOption(propertyId);
  }

  public void setOptions(Hashtable properties) {
    handler.setOptions(properties);
  }

  public void setOption(String propertyId, Object propertyValue) {
    handler.setOption(propertyId, propertyValue);
  }

}
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