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Diffstat (limited to 'libjava/gnu/xml/aelfred2/JAXPFactory.java')
| -rw-r--r-- | libjava/gnu/xml/aelfred2/JAXPFactory.java | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/libjava/gnu/xml/aelfred2/JAXPFactory.java b/libjava/gnu/xml/aelfred2/JAXPFactory.java new file mode 100644 index 00000000000..006dc1302e3 --- /dev/null +++ b/libjava/gnu/xml/aelfred2/JAXPFactory.java @@ -0,0 +1,196 @@ +/* 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., 59 Temple Place, Suite 330, Boston, MA +02111-1307 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() + + } +} |