org.jboss.weld.security.MethodLookupAction Maven / Gradle / Ivy
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* Copyright 2013, Red Hat, Inc., and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* 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.jboss.weld.security;
import java.lang.reflect.Method;
import java.security.PrivilegedExceptionAction;
import java.util.Arrays;
/**
* Returns a method from the class or any class/interface in the inheritance hierarchy
*
* @author Jozef Hartinger
*
*/
public class MethodLookupAction extends GetDeclaredMethodAction implements PrivilegedExceptionAction {
public MethodLookupAction(Class javaClass, String methodName, Class[] parameterTypes) {
super(javaClass, methodName, parameterTypes);
}
@Override
public Method run() throws NoSuchMethodException {
return lookupMethod(javaClass, methodName, parameterTypes);
}
public static Method lookupMethod(Class javaClass, String methodName, Class[] parameterTypes) throws NoSuchMethodException {
for (Class inspectedClass = javaClass; inspectedClass != null; inspectedClass = inspectedClass.getSuperclass()) {
for (Class inspectedInterface : inspectedClass.getInterfaces()) {
try {
return lookupMethod(inspectedInterface, methodName, parameterTypes);
} catch (NoSuchMethodException e) {
// Expected, nothing to see here.
}
}
try {
return inspectedClass.getDeclaredMethod(methodName, parameterTypes);
} catch (NoSuchMethodException nsme) {
// Expected, nothing to see here.
}
}
throw new NoSuchMethodException(javaClass + ", method: " + methodName + ", paramTypes: " + Arrays.toString(parameterTypes));
}
}