| /* JAXPFactory.java -- |
| Copyright (C) 2001 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| package gnu.xml.aelfred2; |
| |
| import java.util.Enumeration; |
| import java.util.Hashtable; |
| |
| import org.xml.sax.Parser; |
| import org.xml.sax.XMLReader; |
| import org.xml.sax.SAXException; |
| import org.xml.sax.SAXNotRecognizedException; |
| import org.xml.sax.SAXNotSupportedException; |
| import org.xml.sax.helpers.XMLReaderAdapter; |
| |
| import javax.xml.parsers.ParserConfigurationException; |
| import javax.xml.parsers.SAXParser; |
| import javax.xml.parsers.SAXParserFactory; |
| |
| |
| /** |
| * Configurable factory to create an Ælfred2 JAXP parser; required |
| * to bootstrap using JAXP. You should use SAX2 directly where possible, |
| * rather than through JAXP, since that gives you better control. |
| * This class would normally be configured as a platform default factory. |
| * |
| * @author David Brownell |
| */ |
| public final class JAXPFactory |
| extends SAXParserFactory |
| { |
| |
| private Hashtable flags = new Hashtable(); |
| |
| /** |
| * Constructs a factory which normally returns a non-validating |
| * parser. |
| */ |
| public JAXPFactory() |
| { |
| } |
| |
| public SAXParser newSAXParser() |
| throws ParserConfigurationException, SAXException |
| { |
| JaxpParser jaxp = new JaxpParser(); |
| Enumeration e = flags.keys(); |
| XMLReader parser = jaxp.getXMLReader(); |
| |
| parser.setFeature(SAXDriver.FEATURE + "namespaces", |
| isNamespaceAware()); |
| parser.setFeature(SAXDriver.FEATURE + "validation", |
| isValidating()); |
| // that makes SAX2 feature flags trump JAXP |
| |
| while (e.hasMoreElements()) |
| { |
| String uri = (String) e.nextElement(); |
| Boolean value = (Boolean) flags.get(uri); |
| parser.setFeature(uri, value.booleanValue()); |
| } |
| |
| return jaxp; |
| } |
| |
| // yes, this "feature transfer" mechanism doesn't play well |
| |
| public void setFeature(String name, boolean value) |
| throws ParserConfigurationException, SAXNotRecognizedException, |
| SAXNotSupportedException |
| { |
| try |
| { |
| // force "early" detection of errors where possible |
| // (flags can't necessarily be set before parsing) |
| new JaxpParser().getXMLReader().setFeature(name, value); |
| |
| flags.put(name, Boolean.valueOf(value)); |
| } |
| catch (SAXNotRecognizedException e) |
| { |
| throw new SAXNotRecognizedException(name); |
| } |
| catch (SAXNotSupportedException e) |
| { |
| throw new SAXNotSupportedException(name); |
| } |
| catch (Exception e) |
| { |
| throw new ParserConfigurationException(e.getClass().getName() |
| + ": " |
| + e.getMessage()); |
| } |
| } |
| |
| public boolean getFeature(String name) |
| throws ParserConfigurationException, SAXNotRecognizedException, |
| SAXNotSupportedException |
| { |
| Boolean value = (Boolean) flags.get(name); |
| |
| if (value != null) |
| { |
| return value.booleanValue(); |
| } |
| else |
| { |
| try |
| { |
| return new JaxpParser().getXMLReader().getFeature(name); |
| } |
| catch (SAXNotRecognizedException e) |
| { |
| throw new SAXNotRecognizedException(name); |
| } |
| catch (SAXNotSupportedException e) |
| { |
| throw new SAXNotSupportedException(name); |
| } |
| catch (SAXException e) |
| { |
| throw new ParserConfigurationException(e.getClass().getName() |
| + ": " |
| + e.getMessage()); |
| } |
| } |
| } |
| |
| private static class JaxpParser |
| extends SAXParser |
| { |
| |
| private XmlReader ae2 = new XmlReader(); |
| private XMLReaderAdapter parser = null; |
| |
| JaxpParser() |
| { |
| } |
| |
| public void setProperty(String id, Object value) |
| throws SAXNotRecognizedException, SAXNotSupportedException |
| { |
| ae2.setProperty(id, value); |
| } |
| |
| public Object getProperty(String id) |
| throws SAXNotRecognizedException, SAXNotSupportedException |
| { |
| return ae2.getProperty(id); |
| } |
| |
| public Parser getParser() |
| throws SAXException |
| { |
| if (parser == null) |
| { |
| parser = new XMLReaderAdapter(ae2); |
| } |
| return parser; |
| } |
| |
| public XMLReader getXMLReader () |
| throws SAXException |
| { |
| return ae2; |
| } |
| |
| public boolean isNamespaceAware() |
| { |
| try |
| { |
| return ae2.getFeature(SAXDriver.FEATURE + "namespaces"); |
| } |
| catch (Exception e) |
| { |
| throw new Error(); |
| } |
| } |
| |
| public boolean isValidating() |
| { |
| try |
| { |
| return ae2.getFeature(SAXDriver.FEATURE + "validation"); |
| } |
| catch (Exception e) |
| { |
| throw new Error(); |
| } |
| } |
| |
| // TODO isXIncludeAware() |
| |
| } |
| |
| } |
| |