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/*
 * Copyright 2002-2013 the original author or authors.
 *
 * Licensed 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.springframework.instrument.classloading.jboss;

import java.lang.instrument.ClassFileTransformer;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.security.ProtectionDomain;

/**
 * Adapter that implements JBoss Translator interface, delegating to a
 * standard JDK {@link ClassFileTransformer} underneath.
 *
 * 

To avoid compile time checks again the vendor API, a dynamic proxy is * being used. * * @author Costin Leau * @since 3.1 */ class JBossMCTranslatorAdapter implements InvocationHandler { private final ClassFileTransformer transformer; public JBossMCTranslatorAdapter(ClassFileTransformer transformer) { this.transformer = transformer; } @Override public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { String name = method.getName(); if ("equals".equals(name)) { return proxy == args[0]; } else if ("hashCode".equals(name)) { return hashCode(); } else if ("toString".equals(name)) { return toString(); } else if ("transform".equals(name)) { return transform((ClassLoader) args[0], (String) args[1], (Class) args[2], (ProtectionDomain) args[3], (byte[]) args[4]); } else if ("unregisterClassLoader".equals(name)) { unregisterClassLoader((ClassLoader) args[0]); return null; } else { throw new IllegalArgumentException("Unknown method: " + method); } } public byte[] transform(ClassLoader loader, String className, Class classBeingRedefined, ProtectionDomain protectionDomain, byte[] classfileBuffer) throws Exception { return this.transformer.transform(loader, className, classBeingRedefined, protectionDomain, classfileBuffer); } public void unregisterClassLoader(ClassLoader loader) { } @Override public String toString() { StringBuilder builder = new StringBuilder(getClass().getName()); builder.append(" for transformer: "); builder.append(this.transformer); return builder.toString(); } }





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