/*
* Copyright 2002-2006 the original author or authors.
*
* 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.springframework.aop.framework.autoproxy;
import java.lang.reflect.Method;
import org.springframework.aop.MethodBeforeAdvice;
/**
* @author Dave Syer
*/
public class NullChecker implements MethodBeforeAdvice {
public void before(Method method, Object[] args, Object target) throws Throwable {
check(args);
}
private void check(Object[] args) {
for (int i = 0; i < args.length; i++) {
if (args[i] == null) {
throw new IllegalArgumentException("Null argument at position " + i);
}
}
}
}