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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.vfs2.provider.url;
18  
19  import java.util.Collection;
20  
21  import org.apache.commons.vfs2.Capability;
22  import org.apache.commons.vfs2.FileName;
23  import org.apache.commons.vfs2.FileObject;
24  import org.apache.commons.vfs2.FileSystemOptions;
25  import org.apache.commons.vfs2.provider.AbstractFileName;
26  import org.apache.commons.vfs2.provider.AbstractFileSystem;
27  
28  /**
29   * A File system backed by Java's URL API.
30   */
31  public class UrlFileSystem extends AbstractFileSystem {
32  
33      /**
34       * Constructs a new instance.
35       *
36       * @param rootName The root file name of this file system.
37       * @param fileSystemOptions Options to build this file system.
38       */
39      protected UrlFileSystem(final FileName rootName, final FileSystemOptions fileSystemOptions) {
40          super(rootName, null, fileSystemOptions);
41      }
42  
43      /**
44       * Returns the capabilities of this file system.
45       */
46      @Override
47      protected void addCapabilities(final Collection<Capability> caps) {
48          caps.addAll(UrlFileProvider.capabilities);
49      }
50  
51      /**
52       * Creates a file object.
53       */
54      @Override
55      protected FileObject createFile(final AbstractFileName name) {
56          return new UrlFileObject(this, name);
57      }
58  }