    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    }