org.springframework.aop.support.NameMatchMethodPointcut Maven / Gradle / Ivy
/*
* Copyright 2002-2005 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.support;
import java.io.Serializable;
import java.lang.reflect.Method;
import java.util.LinkedList;
import java.util.List;
/**
* Pointcut bean for simple method name matches, as alternative to regexp patterns.
* Does not handle overloaded methods: all methods *with a given name will be eligible.
*
* @author Juergen Hoeller
* @author Rod Johnson
* @since 11.02.2004
* @see #isMatch
*/
public class NameMatchMethodPointcut extends StaticMethodMatcherPointcut implements Serializable {
private List mappedNames = new LinkedList();
/**
* Convenience method when we have only a single method name
* to match. Use either this method or setMappedNames(), not both.
* @see #setMappedNames
*/
public void setMappedName(String mappedName) {
setMappedNames(new String[] { mappedName });
}
/**
* Set the method names defining methods to match.
* Matching will be the union of all these; if any match,
* the pointcut matches.
*/
public void setMappedNames(String[] mappedNames) {
this.mappedNames = new LinkedList();
if (mappedNames != null) {
for (int i = 0; i < mappedNames.length; i++) {
this.mappedNames.add(mappedNames[i]);
}
}
}
/**
* Add another eligible method name, in addition to those already named.
* Like the set methods, this method is for use when configuring proxies,
* before a proxy is used.
* NB: This method does not work after the proxy is in
* use, as advice chains will be cached.
* @param name name of the additional method that will match
* @return this pointcut to allow for multiple additions in one line
*/
public NameMatchMethodPointcut addMethodName(String name) {
// TODO in a future release, consider a way of letting proxies
// cause advice changed events.
this.mappedNames.add(name);
return this;
}
public boolean matches(Method method, Class targetClass) {
for (int i = 0; i < this.mappedNames.size(); i++) {
String mappedName = (String) this.mappedNames.get(i);
if (mappedName.equals(method.getName()) || isMatch(method.getName(), mappedName)) {
return true;
}
}
return false;
}
/**
* Return if the given method name matches the mapped name.
* The default implementation checks for "xxx*" and "*xxx" matches.
* Can be overridden in subclasses.
* @param methodName the method name of the class
* @param mappedName the name in the descriptor
* @return if the names match
*/
protected boolean isMatch(String methodName, String mappedName) {
return (mappedName.endsWith("*") && methodName.startsWith(mappedName.substring(0, mappedName.length() - 1))) ||
(mappedName.startsWith("*") && methodName.endsWith(mappedName.substring(1, mappedName.length())));
}
}