/*
* Copyright (c) 2004, Marco Petris
* All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - 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.
* - Neither the name of Marco Petris nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 de.petris.dynamicaspects.wrapper;
import java.util.HashMap;
import java.util.Map;
import de.petris.dynamicaspects.classhandler.ClassHandler;
import de.petris.dynamicaspects.classhandler.ExecutionClassHandler;
/**
* This class is patched into the matching methods of the target class.
* If a woven method of the target class is called the mapper returns the
* correct wrapper for the method. The wrapper
* {@link ExecutionWrapper ExecutionWrapper} then handles the aspects.
* This mapper handles the mapping of target classes and class handlers.
*
* @author Marco Petris
*
* @see ExecutionWrapper
* @see ExecutionClassHandler
* @see de.petris.dynamicaspects.BeforeAfterAdvice
* @see de.petris.dynamicaspects.WeaveType
*/
public class ExecutionMapper {
/**
* This method is called during runtime to get the wrapper for the
* executing method.
*/
static String GETWRAPPER_METHODNAME = "getWrapper";
// a mapping: targetclass name -> classhandler
private static Map<String, ExecutionClassHandler> executionHandlers
= new HashMap<String, ExecutionClassHandler>();
/**
* Called by {@link de.petris.dynamicaspects.WeaveType WeaveType.EXECUTION}
* to obtain the corresponding handler for a target class. If the class has
* no handler yet a handler is created.
*
* @param targetClassName the name of the target class
* @return the handler for the target class
*/
public static ClassHandler getClassHandler( String targetClassName ) {
if( executionHandlers.containsKey( targetClassName ) ) {
return executionHandlers.get( targetClassName );
}
else {
ExecutionClassHandler cHandler = new ExecutionClassHandler();
executionHandlers.put( targetClassName, cHandler );
return cHandler;
}
}
/**
* Called to handle the advices. The target method calls this method to
* load its wrapper and leave advice handling to this wrapper.
* This method is not for normal programming use.
*
* @param targetClassName the classname of the target class.
* @param fullMethodName the method name which is executing.
* @return the wrapper for the given class/method
*/
public static ExecutionWrapper getWrapper(
String targetClassName, String fullMethodName ) {
ExecutionClassHandler cHandler
= executionHandlers.get( targetClassName );
return cHandler.getExecutionWrapper( fullMethodName );
}
}