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         *
056         * @param methodNames the names
057         */
058        public SimpleFilter( String[] methodNames )
059        {
060            this.methodNames = new HashSet(Arrays.asList(methodNames));
061        }
062    
063    //**********************************************************************************************************************
064    // MethodFilter Implementation
065    //**********************************************************************************************************************
066    
067        public boolean accepts( Method method )
068        {
069            return methodNames.contains(method.getName());
070        }
071    }
072