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.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: 2006-11-28 22:15:24 -0800 (Tue, 28 Nov 2006) $
26: */
27: class FileSystemKey implements Comparable {
28: private final static FileSystemOptions EMPTY_OPTIONS = new FileSystemOptions();
29:
30: final Comparable key;
31: final FileSystemOptions fileSystemOptions;
32:
33: FileSystemKey(final Comparable key,
34: final FileSystemOptions fileSystemOptions) {
35: this .key = key;
36: if (fileSystemOptions != null) {
37: this .fileSystemOptions = fileSystemOptions;
38: } else {
39: this .fileSystemOptions = EMPTY_OPTIONS;
40: }
41: }
42:
43: public int compareTo(Object o) {
44: FileSystemKey fk = (FileSystemKey) o;
45:
46: int ret = key.compareTo(fk.key);
47: if (ret != 0) {
48: // other filesystem
49: return ret;
50: }
51:
52: return fileSystemOptions.compareTo(fk.fileSystemOptions);
53: }
54: }
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