01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * 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.vfs;
18:
19: /**
20: * Several standard file selectors.
21: *
22: * @author <a href="mailto:adammurdoch@apache.org">Adam Murdoch</a>
23: * @version $Revision: 480428 $ $Date: 2006-11-28 22:15:24 -0800 (Tue, 28 Nov 2006) $
24: */
25: public interface Selectors {
26: /**
27: * A {@link FileSelector} that selects only the base file/folder.
28: */
29: FileSelector SELECT_SELF = new FileDepthSelector(0, 0);
30:
31: /**
32: * A {@link FileSelector} that selects the base file/folder and its
33: * direct children.
34: */
35: FileSelector SELECT_SELF_AND_CHILDREN = new FileDepthSelector(0, 1);
36:
37: /**
38: * A {@link FileSelector} that selects only the direct children
39: * of the base folder.
40: */
41: FileSelector SELECT_CHILDREN = new FileDepthSelector(1, 1);
42:
43: /**
44: * A {@link FileSelector} that selects all the descendents of the
45: * base folder, but does not select the base folder itself.
46: */
47: FileSelector EXCLUDE_SELF = new FileDepthSelector(1,
48: Integer.MAX_VALUE);
49:
50: /**
51: * A {@link FileSelector} that only files (not folders).
52: */
53: FileSelector SELECT_FILES = new FileTypeSelector(FileType.FILE);
54:
55: /**
56: * A {@link FileSelector} that only folders (not files).
57: */
58: FileSelector SELECT_FOLDERS = new FileTypeSelector(FileType.FOLDER);
59:
60: /**
61: * A {@link FileSelector} that selects the base file/folder, plus all
62: * its descendents.
63: */
64: FileSelector SELECT_ALL = new AllFileSelector();
65: }
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