EmptySourceFactory


1   /*
2    * Copyright 1999-2005 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.cocoon.components.source.impl;
17  
18  import java.io.IOException  ;
19  import java.net.MalformedURLException  ;
20  import java.util.Map  ;
21  
22  import org.apache.avalon.framework.logger.AbstractLogEnabled;
23  import org.apache.avalon.framework.thread.ThreadSafe;
24  import org.apache.excalibur.source.Source;
25  import org.apache.excalibur.source.SourceFactory;
26  
27  /**
28   * A factory for 'empty:' sources (see {@link EmptySource}).
29   *
30   * @version $Id: EmptySourceFactory.java 292330 2005-09-28 22:07:18Z vgritsenko $
31   * @since 2.1.8
32   */
33  public class EmptySourceFactory extends AbstractLogEnabled
34                                  implements SourceFactory, ThreadSafe {
35  
36      /**
37       * Get an {@link EmptySource} object.
38       *
39       * @param location   The URI to resolve - this URI includes the scheme.
40       * @param parameters this is optional and not used here
41       *
42       * @see org.apache.excalibur.source.SourceFactory#getSource(java.lang.String, java.util.Map)
43       */
44      public Source getSource(String   location, Map   parameters)
45      throws IOException  , MalformedURLException   {
46          return new EmptySource(location);
47      }
48  
49      /**
50       * @see org.apache.excalibur.source.SourceFactory#release(org.apache.excalibur.source.Source)
51       */
52      public void release(Source source) {
53          // Do nothing here
54      }
55  }
56
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