org.apache.deltaspike.core.util.ProxyUtils Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.deltaspike.core.util;
import javax.enterprise.inject.Typed;
import java.lang.reflect.Proxy;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
/**
* Helper for proxies
*/
@Typed()
public abstract class ProxyUtils
{
private ProxyUtils()
{
// prevent instantiation
}
/**
* @param currentClass current class
* @return class of the real implementation
*/
public static Class getUnproxiedClass(Class currentClass)
{
if (isProxiedClass(currentClass))
{
return currentClass.getSuperclass();
}
return currentClass;
}
/**
* Analyses if the given class is a generated proxy class
* @param currentClass current class
* @return true if the given class is a known proxy class, false otherwise
*/
public static boolean isProxiedClass(Class currentClass)
{
if (currentClass == null || currentClass.getSuperclass() == null)
{
return false;
}
return currentClass.getName().startsWith(currentClass.getSuperclass().getName()) &&
currentClass.getName().contains("$$");
}
public static List> getProxyAndBaseTypes(Class proxyClass)
{
List> result = new ArrayList>();
result.add(proxyClass);
if (isInterfaceProxy(proxyClass))
{
result.addAll(Arrays.asList(proxyClass.getInterfaces()));
}
else
{
result.add(proxyClass.getSuperclass());
}
return result;
}
public static boolean isInterfaceProxy(Class proxyClass)
{
Class[] interfaces = proxyClass.getInterfaces();
return Proxy.class.equals(proxyClass.getSuperclass()) &&
interfaces != null && interfaces.length > 0;
}
}