libjava/classpath/gnu/xml/dom/DomDocumentBuilderFactory.java

   1 /* DomDocumentBuilderFactory.java --
   2    Copyright (C) 2004 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38 package gnu.xml.dom;
  39
  40 import javax.xml.XMLConstants;
  41 import javax.xml.parsers.DocumentBuilder;
  42 import javax.xml.parsers.DocumentBuilderFactory;
  43 import javax.xml.parsers.FactoryConfigurationError;
  44 import javax.xml.parsers.ParserConfigurationException;
  45 import org.w3c.dom.DOMConfiguration;
  46 import org.w3c.dom.DOMImplementation;
  47 import org.w3c.dom.bootstrap.DOMImplementationRegistry;
  48 import org.w3c.dom.ls.DOMImplementationLS;
  49 import org.w3c.dom.ls.LSParser;
  50
  51 /**
  52  * Document builder factory that uses a DOM Level 3 Load &amp; Save
  53  * implementation.
  54  *
  55  * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
  56  */
  57 public class DomDocumentBuilderFactory
  58   extends DocumentBuilderFactory
  59 {
  60
  61   final DOMImplementation impl;
  62   final DOMImplementationLS ls;
  63   private boolean secureProcessing;
  64
  65   public DomDocumentBuilderFactory()
  66   {
  67     try
  68       {
  69         DOMImplementationRegistry reg =
  70           DOMImplementationRegistry.newInstance();
  71         impl = reg.getDOMImplementation("LS 3.0");
  72         if (impl == null)
  73           {
  74             throw new FactoryConfigurationError("no LS implementations found");
  75           }
  76         ls = (DOMImplementationLS) impl;
  77       }
  78     catch (Exception e)
  79       {
  80         throw new FactoryConfigurationError(e);
  81       }
  82   }
  83
  84   public DocumentBuilder newDocumentBuilder()
  85     throws ParserConfigurationException
  86   {
  87     LSParser parser = ls.createLSParser(DOMImplementationLS.MODE_ASYNCHRONOUS,
  88                                         "http://www.w3.org/TR/REC-xml");
  89     DOMConfiguration config = parser.getDomConfig();
  90     setParameter(config, "namespaces",
  91                  isNamespaceAware() ? Boolean.TRUE : Boolean.FALSE);
  92     setParameter(config, "element-content-whitespace",
  93                  isIgnoringElementContentWhitespace() ? Boolean.FALSE :
  94                  Boolean.TRUE);
  95     setParameter(config, "comments",
  96                  isIgnoringComments() ? Boolean.FALSE : Boolean.TRUE);
  97     setParameter(config, "expand-entity-references",
  98                  isExpandEntityReferences() ? Boolean.TRUE : Boolean.FALSE);
  99     setParameter(config, "coalescing",
 100                  isCoalescing() ? Boolean.TRUE : Boolean.FALSE);
 101     setParameter(config, "validating",
 102                  isValidating() ? Boolean.TRUE : Boolean.FALSE);
 103     setParameter(config, "xinclude-aware",
 104                  isXIncludeAware() ? Boolean.TRUE : Boolean.FALSE);
 105     return new DomDocumentBuilder(impl, ls, parser);
 106   }
 107
 108   void setParameter(DOMConfiguration config, String name, Object value)
 109     throws ParserConfigurationException
 110   {
 111     if (!config.canSetParameter(name, value))
 112       {
 113         throw new ParserConfigurationException(name);
 114       }
 115     config.setParameter(name, value);
 116   }
 117
 118   public Object getAttribute(String name)
 119   {
 120     // TODO
 121     return null;
 122   }
 123
 124   public void setAttribute(String name, Object value)
 125   {
 126     // TODO
 127   }
 128
 129   public void setFeature(String name, boolean value)
 130     throws ParserConfigurationException
 131   {
 132     if (name == null)
 133       throw new NullPointerException();
 134     if (XMLConstants.FEATURE_SECURE_PROCESSING.equals(name))
 135       {
 136         secureProcessing = true;
 137         return;
 138       }
 139     throw new ParserConfigurationException(name);
 140   }
 141
 142   public boolean getFeature(String name)
 143     throws ParserConfigurationException
 144   {
 145     if (XMLConstants.FEATURE_SECURE_PROCESSING.equals(name))
 146       return secureProcessing;
 147     throw new ParserConfigurationException(name);
 148   }
 149
 150 }
 151