001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 018 package org.apache.commons.proxy.interceptor.filter; 019 020 import org.apache.commons.proxy.interceptor.MethodFilter; 021 022 import java.lang.reflect.Method; 023 import java.util.Arrays; 024 import java.util.HashSet; 025 import java.util.Set; 026 027 /** 028 * A simple method filter implementation that merely returns true if the method's name is in a set of accepted names. 029 * 030 * @author James Carman 031 * @since 1.0 032 */ 033 public class SimpleFilter implements MethodFilter 034 { 035 //---------------------------------------------------------------------------------------------------------------------- 036 // Fields 037 //---------------------------------------------------------------------------------------------------------------------- 038 039 private final Set methodNames; 040 041 //---------------------------------------------------------------------------------------------------------------------- 042 // Constructors 043 //---------------------------------------------------------------------------------------------------------------------- 044 045 /** 046 * Creates a simple filter that accepts no methods. 047 */ 048 public SimpleFilter() 049 { 050 this.methodNames = new HashSet(); 051 } 052 053 /** 054 * Creates a simple filter that accepts methods matching the supplied names. 055 * @param methodNames the names 056 */ 057 public SimpleFilter( String[] methodNames ) 058 { 059 this.methodNames = new HashSet( Arrays.asList( methodNames ) ); 060 } 061 062 //---------------------------------------------------------------------------------------------------------------------- 063 // MethodFilter Implementation 064 //---------------------------------------------------------------------------------------------------------------------- 065 066 public boolean accepts( Method method ) 067 { 068 return methodNames.contains( method.getName() ); 069 } 070 } 071