1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.vfs2.filter;
18
19 import java.io.Serializable;
20
21 import org.apache.commons.vfs2.FileFilter;
22 import org.apache.commons.vfs2.FileSelectInfo;
23
24 /**
25 * A file filter that always returns true.
26 *
27 * @author This code was originally ported from Apache Commons IO File Filter
28 * @see "https://commons.apache.org/proper/commons-io/"
29 * @since 2.4
30 */
31 public class TrueFileFilter implements FileFilter, Serializable {
32
33 /**
34 * Singleton instance of true filter.
35 *
36 * @since 2.10.0
37 */
38 public static final FileFilter INSTANCE = new TrueFileFilter();
39
40 private static final long serialVersionUID = 1L;
41
42 /**
43 * Singleton instance of true filter.
44 *
45 * @deprecated Use {@link #INSTANCE}.
46 */
47 @Deprecated
48 public static final FileFilter TRUE = INSTANCE;
49
50 /**
51 * Restrictive constructor.
52 */
53 protected TrueFileFilter() {
54 }
55
56 /**
57 * Returns true.
58 *
59 * @param fileSelectInfo the file to check (ignored)
60 * @return Always {@code true}
61 */
62 @Override
63 public boolean accept(final FileSelectInfo fileSelectInfo) {
64 return true;
65 }
66
67 }