Sax2XMLReaderCreator


1   package com.thaiopensource.xml.sax;
2   
3   import org.xml.sax.SAXException  ;
4   import org.xml.sax.XMLReader  ;
5   import org.xml.sax.SAXNotRecognizedException  ;
6   import org.xml.sax.SAXNotSupportedException  ;
7   import org.xml.sax.helpers.XMLReaderFactory  ;
8   
9   import com.thaiopensource.xml.sax.XMLReaderCreator;
10  
11  /**
12   * An <code>XMLReaderCreator</code> that creates <code>XMLReader</code>s using the SAX2 <code>XMLReaderFactory</code>.
13   * An instance of this class is safe for concurrent access by multiple threads.
14   *
15   * @see org.xml.sax.helpers.XMLReaderFactory
16   * @author <a HREF="mailto:jjc@jclark.com">James Clark</a>
17   */
18  public class Sax2XMLReaderCreator implements XMLReaderCreator {
19    private final String   className;
20  
21    /**
22     * Constructs a <code>Sax2XMLReaderCreator</code> that uses system defaults to construct <code>XMLReader</code>s.
23     */
24    public Sax2XMLReaderCreator() {
25      this.className = null;
26    }
27  
28   /**
29    * Constructs a <code>Sax2XMLReaderCreator</code> that constructs <code>XMLReader</code>s with the specified
30    * class name.
31    *
32    * @param className the fully-qualified name of the class implementing <code>XMLReader</code>;
33    * if <code>null</code> equivalent to the no-argument constructor
34    *
35    */
36    public Sax2XMLReaderCreator(String   className) {
37      this.className = className;
38    }
39  
40    public XMLReader   createXMLReader() throws SAXException   {
41      XMLReader   xr;
42      if (className == null)
43        xr = XMLReaderFactory.createXMLReader();
44      else
45        xr = XMLReaderFactory.createXMLReader(className);
46      xr.setFeature("http://xml.org/sax/features/namespaces", true);
47      xr.setFeature("http://xml.org/sax/features/namespace-prefixes", false);
48      try {
49        xr.setFeature("http://xml.org/sax/features/validation", false);
50      }
51      catch (SAXNotRecognizedException   e) {
52      }
53      catch (SAXNotSupportedException   e) {
54      }
55      return xr;
56    }
57  }
58
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