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    package org.apache.xbean.finder.filter;
018    
019    /**
020     * @version $Rev$ $Date$
021     */
022    public class PrefixFilter implements Filter {
023    
024        private final String prefix;
025    
026        public PrefixFilter(String prefix) {
027            assert prefix != null;
028            this.prefix = prefix;
029        }
030    
031        public String getPrefix() {
032            return prefix;
033        }
034    
035        @Override
036        public boolean accept(String name) {
037            return name.startsWith(prefix);
038        }
039    
040        @Override
041        public boolean equals(Object o) {
042            if (this == o) return true;
043            if (o == null || getClass() != o.getClass()) return false;
044    
045            PrefixFilter that = (PrefixFilter) o;
046    
047            return prefix.equals(that.prefix);
048        }
049    
050        @Override
051        public int hashCode() {
052            return prefix.hashCode();
053        }
054    
055        @Override
056        public String toString() {
057            return "PrefixFilter{" +
058                    "prefix='" + prefix + '\'' +
059                    '}';
060        }
061    }