    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        @Override
    032        public boolean accept(final FTPFile file) {
    033            return true;
    034        }
    035    };
    036
    037    /**
    038     * Accepts all non-null FTPFile entries.
    039     */
    040    public static final FTPFileFilter NON_NULL = new FTPFileFilter() {
    041        @Override
    042        public boolean accept(final FTPFile file) {
    043            return file != null;
    044        }
    045    };
    046
    047    /**
    048     * Accepts all (non-null) FTPFile directory entries.
    049     */
    050    public static final FTPFileFilter DIRECTORIES = new FTPFileFilter() {
    051        @Override
    052        public boolean accept(final FTPFile file) {
    053            return file != null && file.isDirectory();
    054        }
    055    };
    056
    057}