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    
019    package org.apache.commons.net.ftp;
020    
021    /**
022     * Implements some simple FTPFileFilter classes.
023     * @since 2.2
024     */
025    public class FTPFileFilters {
026    
027        /**
028         * Accepts all FTPFile entries, including null
029         */
030        public static final FTPFileFilter ALL = new FTPFileFilter() {
031            public boolean accept(FTPFile file) {
032                return true;
033            }
034        };
035    
036        /**
037         * Accepts all non-null FTPFile entries
038         */
039        public static final FTPFileFilter NON_NULL = new FTPFileFilter() {
040            public boolean accept(FTPFile file) {
041                return file != null;
042            }
043        };
044    
045        /**
046         * Accepts all (non-null) FTPFile directory entries
047         */
048        public static final FTPFileFilter DIRECTORIES = new FTPFileFilter() {
049            public boolean accept(FTPFile file) {
050                return file != null && file.isDirectory();
051            }
052        };
053    
054    }