com.alipay.sofa.common.xmap.XMethodGetter Maven / Gradle / Ivy
/*
* 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 com.alipay.sofa.common.xmap;
import java.lang.reflect.Method;
/**
*
* @author [email protected]
* @since 2.6.0
*/
public class XMethodGetter implements XGetter {
/**
* method
*/
private Method method;
/**
* class
*/
private Class clazz;
/**
* bean name
*/
private String name;
public XMethodGetter(Method method, Class clazz, String name) {
this.method = method;
this.clazz = clazz;
this.name = name;
}
/**
* @see XGetter#getType()
*/
public Class getType() {
if (method == null) {
throw new IllegalArgumentException("no such getter method: " + clazz.getName() + '.'
+ name);
}
return method.getReturnType();
}
/**
* @see XGetter#getValue(Object)
*/
public Object getValue(Object instance) throws Exception {
if (method == null) {
throw new IllegalArgumentException("no such getter method: " + clazz.getName() + '.'
+ name);
}
if (instance == null) {
return null;
}
return method.invoke(instance, new Object[0]);
}
}