/*
Copyright (c) 2003-2009 ITerative Consulting Pty Ltd. All Rights Reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted
provided that the following conditions are met:
o Redistributions of source code must retain the above copyright notice, this list of conditions and
the following disclaimer.
o 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.
o This jcTOOL Helper Class software, whether in binary or source form may not be used within,
or to derive, any other product without the specific prior written permission of the copyright holder
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package Framework.compression;
import java.lang.reflect.InvocationTargetException;
import java.util.Hashtable;
import java.util.Map;
import org.apache.log4j.Logger;
import org.springframework.remoting.support.RemoteInvocation;
import org.springframework.remoting.support.RemoteInvocationExecutor;
import Framework.AppContextAwareResultWrapper;
import Framework.FrameworkUtils;
/**
* This class is used to invoke a method and then return a compressed, app-context aware result.
* @author tfaulkes
*
*/
public class CompressedInvocationExecutor implements RemoteInvocationExecutor {
private static Logger logger = Logger.getLogger(CompressedInvocationExecutor.class);
/**
* Extract the app context values if there are any, then invoke the method. The result is
* returned as an compressed result which wrappers an app context aware result.
*/
@SuppressWarnings("unchecked")
public Object invoke(RemoteInvocation invocation, Object targetObject)
throws NoSuchMethodException, IllegalAccessException, InvocationTargetException {
logger.debug("Attemping to populate app context from remote invocation [" + invocation + "]");
Map<String, Object> attributes = invocation.getAttributes();
if (attributes != null && attributes.size() > 0) {
logger.debug("Populated app context from remote invocation [" + attributes.size() + "]");
FrameworkUtils.setAppContextValues(new Hashtable<String, Object>(attributes));
}
else {
logger.debug("No attributes attached to invocation");
}
Object result = invocation.invoke(targetObject);
Map<String, Object> appContext = FrameworkUtils.getAppContextValues();
return new CompressedResultWrapper(new AppContextAwareResultWrapper(result, appContext));
}
}