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Diffstat (limited to 'libjava/classpath/gnu/xml/aelfred2/JAXPFactory.java')
| -rw-r--r-- | libjava/classpath/gnu/xml/aelfred2/JAXPFactory.java | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/xml/aelfred2/JAXPFactory.java b/libjava/classpath/gnu/xml/aelfred2/JAXPFactory.java new file mode 100644 index 00000000000..37e8cc9c120 --- /dev/null +++ b/libjava/classpath/gnu/xml/aelfred2/JAXPFactory.java @@ -0,0 +1,231 @@ +/* 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, new Boolean(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() + + } + +} + |
