XStreamComponentInstanceFactory


1   /*****************************************************************************
2    * Copyright (C) NanoContainer Organization. All rights reserved.            *
3    * ------------------------------------------------------------------------- *
4    * The software in this package is published under the terms of the BSD      *
5    * style license a copy of which has been included with this distribution in *
6    * the LICENSE.txt file.                                                     *
7    *                                                                           *
8    *****************************************************************************/
9   package org.nanocontainer.script.xml;
10  
11  import org.picocontainer.PicoContainer;
12  import org.w3c.dom.Element  ;
13  
14  import com.thoughtworks.xstream.XStream;
15  import com.thoughtworks.xstream.io.xml.DomDriver;
16  import com.thoughtworks.xstream.io.xml.DomReader;
17  
18  /**
19   * Implementation of XMLComponentInstanceFactory that uses 
20   * XStream to unmarshal DOM elements.
21   *
22   * @author Paul Hammant
23   * @author Marcos Tarruella
24   * @author Mauro Talevi
25   */
26  public class XStreamComponentInstanceFactory implements XMLComponentInstanceFactory {
27      /** The XStream used to unmarshal the DOM element */
28      private XStream xstream;
29  
30      /**
31       * Creates an XStreamComponentInstanceFactory with the default instance
32       * of XStream
33       */
34      public XStreamComponentInstanceFactory(){
35          this(new XStream(new DomDriver()));
36      }
37      
38      /**
39       * Creates an XStreamComponentInstanceFactory for a given instance
40       * of XStream
41       * @param xstream the XStream instance
42       */
43      public XStreamComponentInstanceFactory(XStream xstream){
44          this.xstream = xstream;
45      }
46      
47      /**
48       * {@inheritDoc}
49       *
50       * @see XMLComponentInstanceFactory#makeInstance(org.picocontainer.PicoContainer,org.w3c.dom.Element,ClassLoader)
51       */
52      public Object   makeInstance(PicoContainer pico, Element   element, ClassLoader   classLoader) throws ClassNotFoundException   {
53          return xstream.unmarshal(new DomReader(element));
54      }
55  }
56
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