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.vfs.provider;
18
19 import org.apache.commons.vfs.FileSystemOptions;
20
21 /***
22 * Used to identify a filesystem
23 *
24 * @author <a href="mailto:imario@apache.org">Mario Ivankovits</a>
25 * @version $Revision: 480428 $ $Date: 2006-11-29 07:15:24 +0100 (Mi, 29 Nov 2006) $
26 */
27 class FileSystemKey implements Comparable
28 {
29 private final static FileSystemOptions EMPTY_OPTIONS = new FileSystemOptions();
30
31 final Comparable key;
32 final FileSystemOptions fileSystemOptions;
33
34 FileSystemKey(final Comparable key, final FileSystemOptions fileSystemOptions)
35 {
36 this.key = key;
37 if (fileSystemOptions != null)
38 {
39 this.fileSystemOptions = fileSystemOptions;
40 }
41 else
42 {
43 this.fileSystemOptions = EMPTY_OPTIONS;
44 }
45 }
46
47 public int compareTo(Object o)
48 {
49 FileSystemKey fk = (FileSystemKey) o;
50
51 int ret = key.compareTo(fk.key);
52 if (ret != 0)
53 {
54 // other filesystem
55 return ret;
56 }
57
58 return fileSystemOptions.compareTo(fk.fileSystemOptions);
59 }
60 }