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