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executable file
·53 lines (48 loc) · 1.99 KB
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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
// 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 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;
}
}