/**************************************************************************************
* Copyright (c) Jonas Bon�r, Alexandre Vasseur. All rights reserved. *
* http://aspectwerkz.codehaus.org *
* ---------------------------------------------------------------------------------- *
* The software in this package is published under the terms of the QPL license *
* a copy of which has been included with this distribution in the license.txt file. *
**************************************************************************************/
package test.xmldef.clapp;
import java.util.Hashtable;
import java.util.Arrays;
import java.io.ByteArrayInputStream;
import org.apache.bcel.classfile.ClassParser;
import org.apache.bcel.generic.ClassGen;
import org.codehaus.aspectwerkz.hook.ClassPreProcessor;
/**
* Add marker interface java.util.EventListener to processed class
*
* @author <a href="mailto:alex@gnilux.com">Alexandre Vasseur</a>
*/
public class AddInterfacePreProcessor implements ClassPreProcessor {
private void log(String s) {
System.out.println(Thread.currentThread().getName() + ": AddInterfacePreProcessor: " + s);
}
public void initialize(Hashtable hashtable) {
;
}
public byte[] preProcess(String klass, byte abyte[], ClassLoader caller) {
try {
log(klass);
// build the ClassGen
ClassParser parser = new ClassParser(new ByteArrayInputStream(abyte), "<generated>");//@todo is this needed _"+klass+">");
ClassGen cg = new ClassGen(parser.parse());
// instrument
if ( ! cg.isInterface() && ! Arrays.asList(cg.getInterfaceNames()).contains("java.util.EventListener") )
cg.addInterface("java.util.EventListener");
try {
cg.getJavaClass().dump("_dump/"+klass.replace('.', '/')+".class");
} catch (Exception e) {
System.err.println("failed to dump " + klass);
e.printStackTrace();
}
return cg.getJavaClass().getBytes();
} catch (Exception e) {
e.printStackTrace();
throw new RuntimeException(e.getMessage());
}
}
}