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NameMatchMethodPointcut.java
Upload User: jiancairen
Upload Date: 2007-08-27
Package Size: 26458k
Code Size: 3k
Category:
Java Develop
Development Platform:
Java
- /*
- * Copyright 2002-2004 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--that is, 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.
- * <br>
- * <b>NB:</b> 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 m, Class targetClass) {
- for (int i = 0; i < this.mappedNames.size(); i++) {
- String mappedName = (String) this.mappedNames.get(i);
- if (mappedName.equals(m.getName()) || isMatch(m.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())));
- }
- }