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
019package org.apache.commons.net.ftp;
020
021/**
022 * Implements some simple FTPFileFilter classes.
023 * @since 2.2
024 */
025public 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}