de.fuberlin.wiwiss.ng4j.trix
Class SAXHandler

java.lang.Object
  org.xml.sax.helpers.DefaultHandler
      de.fuberlin.wiwiss.ng4j.trix.SAXHandler

All Implemented Interfaces:

ContentHandler, DTDHandler, EntityResolver, ErrorHandler

public class SAXHandler
extends DefaultHandler

A SAX content handler that reads a TriX file and calls methods on a ParserCallback for its graphs and triples. Assumes that the file is a valid TriX file, so no error checking.

Author:

Richard Cyganiak (richard@cyganiak.de)

Constructor Summary

SAXHandler(ParserCallback callback, URI baseURI)
Creates a new instance from a parser callback.

Method Summary

void	characters(char[] ch, int start, int length)
void	endElement(String namespaceURI, String localName, String qName)
void	startElement(String namespaceURI, String localName, String qName, Attributes atts)

Methods inherited from class org.xml.sax.helpers.DefaultHandler

endDocument, endPrefixMapping, error, fatalError, ignorableWhitespace, notationDecl, processingInstruction, resolveEntity, setDocumentLocator, skippedEntity, startDocument, startPrefixMapping, unparsedEntityDecl, warning

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SAXHandler

public SAXHandler(ParserCallback callback,
                  URI baseURI)

Creates a new instance from a parser callback.

Parameters:

callback - the parser callback for this handler

baseURI - the URI of the parsed file (for resolving relative URIs)

Method Detail

startElement

public void startElement(String namespaceURI,
                         String localName,
                         String qName,
                         Attributes atts)
                  throws SAXException

Specified by:

startElement in interface ContentHandler

Overrides:

startElement in class DefaultHandler

Throws:

SAXException

characters

public void characters(char[] ch,
                       int start,
                       int length)
                throws SAXException

Specified by:

characters in interface ContentHandler

Overrides:

characters in class DefaultHandler

Throws:

SAXException

endElement

public void endElement(String namespaceURI,
                       String localName,
                       String qName)
                throws SAXException

Specified by:

endElement in interface ContentHandler

Overrides:

endElement in class DefaultHandler

Throws:

SAXException