01: /*
02: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
03: *
04: * This file is part of Resin(R) Open Source
05: *
06: * Each copy or derived work must preserve the copyright notice and this
07: * notice unmodified.
08: *
09: * Resin Open Source is free software; you can redistribute it and/or modify
10: * it under the terms of the GNU General Public License as published by
11: * the Free Software Foundation; either version 2 of the License, or
12: * (at your option) any later version.
13: *
14: * Resin Open Source is distributed in the hope that it will be useful,
15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17: * of NON-INFRINGEMENT. See the GNU General Public License for more
18: * details.
19: *
20: * You should have received a copy of the GNU General Public License
21: * along with Resin Open Source; if not, write to the
22: * Free SoftwareFoundation, Inc.
23: * 59 Temple Place, Suite 330
24: * Boston, MA 02111-1307 USA
25: *
26: * @author Scott Ferguson
27: */
28:
29: package com.caucho.vfs;
30:
31: import java.io.FileNotFoundException;
32: import java.io.IOException;
33: import java.util.Map;
34:
35: /**
36: * Always returns <code>FileNotFound</code> for any open attempt.
37: * <code>NotFoundPath</code> is a useful utility Path for MergePath when
38: * the path doesn't exist in any of the merged paths.
39: *
40: * @since Resin 1.2
41: */
42: public class NotFoundPath extends Path {
43: private String _url;
44:
45: /**
46: * Creates new NotFoundPath
47: */
48: public NotFoundPath(String url) {
49: super (null);
50:
51: _url = url;
52: _schemeMap = SchemeMap.getNullSchemeMap();
53: }
54:
55: /**
56: * Dummy return.
57: */
58: public Path schemeWalk(String userPath,
59: Map<String, Object> attributes, String path, int offset) {
60: return this ;
61: }
62:
63: /**
64: * The URL is error
65: */
66: public String getURL() {
67: return "error:" + _url;
68: }
69:
70: public String getScheme() {
71: return "error";
72: }
73:
74: /**
75: * Returns the URL which can't be found.
76: */
77: public String getPath() {
78: return _url;
79: }
80:
81: /**
82: * Dummy return.
83: */
84: public Path lookupImpl(String userPath,
85: Map<String, Object> newAttributes) {
86: return this ;
87: }
88:
89: /**
90: * Throws a FileNotFoundException for any read.
91: */
92: public StreamImpl openReadImpl() throws IOException {
93: throw new FileNotFoundException(_url);
94: }
95:
96: protected Path copyCache() {
97: return null;
98: }
99: }
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