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.cache;
18:
19: import org.apache.commons.vfs.FileName;
20: import org.apache.commons.vfs.FileSystem;
21:
22: /**
23: * Key for various cache implementations.<br>
24: * It compares the fileSystem (by hashCode) and the filename.
25: *
26: * @author <a href="mailto:imario@apache.org">Mario Ivankovits</a>
27: * @version $Revision: 480428 $ $Date: 2006-11-28 22:15:24 -0800 (Tue, 28 Nov 2006) $
28: */
29: class FileSystemAndNameKey implements Comparable {
30: private final FileSystem fileSystem;
31: private final FileName fileName;
32: private final int fileSystemId;
33:
34: FileSystemAndNameKey(final FileSystem fileSystem,
35: final FileName fileName) {
36: this .fileSystem = fileSystem;
37: this .fileSystemId = System.identityHashCode(fileSystem);
38:
39: this .fileName = fileName;
40: }
41:
42: public int compareTo(Object o) {
43: FileSystemAndNameKey other = (FileSystemAndNameKey) o;
44:
45: if (fileSystemId < other.fileSystemId) {
46: return -1;
47: }
48: if (fileSystemId > other.fileSystemId) {
49: return 1;
50: }
51:
52: return fileName.compareTo(other.fileName);
53: }
54:
55: FileSystem getFileSystem() {
56: return fileSystem;
57: }
58:
59: FileName getFileName() {
60: return fileName;
61: }
62: }
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