ReflectUtil.java

// Copyright 2012 Citrix Systems, Inc. Licensed under the
// Apache License, Version 2.0 (the "License"); you may not use this
// file except in compliance with the License.  Citrix Systems, Inc.
// reserves all rights not expressly granted by 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.
// 
// Automatically generated by addcopyright.py at 04/03/2012
package com.cloud.utils;

import java.lang.reflect.Field;
import java.lang.reflect.Method;

import com.cloud.utils.exception.CloudRuntimeException;

public class ReflectUtil {
    public static Pair<Class<?>, Field> getAnyField(Class<?> clazz, String fieldName) {
        try {
            return new Pair<Class<?>, Field>(clazz, clazz.getDeclaredField(fieldName));
        } catch (SecurityException e) {
            throw new CloudRuntimeException("How the heck?", e);
        } catch (NoSuchFieldException e) {
            // Do I really want this?  No I don't but what can I do?  It only throws the NoSuchFieldException.
            Class<?> parent = clazz.getSuperclass();
            if (parent != null) {
                return getAnyField(parent, fieldName);
            }
            return null;
        }
    }
    
    public static Method findMethod(Class<?> clazz, String methodName) {
        do {
            Method[] methods = clazz.getDeclaredMethods();
            for (Method method : methods) {
                if (methodName.equals(method.getName())) {
                    return method;
                }
            }
            clazz = clazz.getSuperclass();
        } while (clazz != null);
        return null;
    }

}