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Java > Open Source Codes > org > apache > commons > vfs > provider > http > HttpFileSystem


1 /*
2  * Copyright 2002-2005 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package org.apache.commons.vfs.provider.http;
17
18 import org.apache.commons.httpclient.HttpClient;
19 import org.apache.commons.vfs.FileName;
20 import org.apache.commons.vfs.FileObject;
21 import org.apache.commons.vfs.FileSystem;
22 import org.apache.commons.vfs.FileSystemOptions;
23 import org.apache.commons.vfs.provider.AbstractFileSystem;
24 import org.apache.commons.vfs.provider.GenericFileName;
25
26 import java.util.Collection JavaDoc;
27
28 /**
29  * An HTTP file system.
30  *
31  * @author <a HREF="mailto:adammurdoch@apache.org">Adam Murdoch</a>
32  */
33 public class HttpFileSystem
34     extends AbstractFileSystem
35     implements FileSystem
36 {
37     private final HttpClient client;
38
39     protected HttpFileSystem(final GenericFileName rootName, final HttpClient client, final FileSystemOptions fileSystemOptions)
40     {
41         super(rootName, null, fileSystemOptions);
42         this.client = client;
43     }
44
45     /**
46      * Adds the capabilities of this file system.
47      */
48     protected void addCapabilities(final Collection JavaDoc caps)
49     {
50         caps.addAll(HttpFileProvider.capabilities);
51     }
52
53     protected HttpClient getClient()
54     {
55         return client;
56     }
57
58     /**
59      * Creates a file object. This method is called only if the requested
60      * file is not cached.
61      */
62     protected FileObject createFile(final FileName name)
63         throws Exception JavaDoc
64     {
65         return new HttpFileObject(name, this);
66     }
67 }
68
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