gate.creole
Class CreoleXmlHandler

java.lang.Object
  org.xml.sax.helpers.DefaultHandler
      gate.creole.CreoleXmlHandler

All Implemented Interfaces:

ContentHandler, DTDHandler, EntityResolver, ErrorHandler

public class CreoleXmlHandler
extends DefaultHandler

This is a SAX handler for processing creole.xml files. It would have been better to write it using DOM or JDOM but.... Resource data objects are created and added to the CREOLE register. URLs for resource JAR files are added to the GATE class loader.

Constructor Summary

CreoleXmlHandler(CreoleRegister register, URL directoryUrl, URL creoleFileUrl)
Construction

Method Summary

void	characters(char[] text, int start, int length) Called when the SAX parser encounts text (PCDATA) in the XML doc
void	charactersAction(char[] text, int start, int length) This method is called when all characters between specific tags have been read completely
void	endDocument() Called when the SAX parser encounts the end of the XML document
void	endElement(String uri, String qName, String elementName) Called when the SAX parser encounts the end of an XML element.
void	error(SAXParseException ex) Called for parse errors.
void	fatalError(SAXParseException ex) Called for fatal errors.
void	ignorableWhitespace(char[] ch, int start, int length) Called when the SAX parser encounts white space
void	startDocument() Called when the SAX parser encounts the beginning of the XML document
void	startElement(String uri, String qName, String elementName, Attributes atts) Called when the SAX parser encounts the beginning of an XML element
void	warning(SAXParseException ex) Called for warnings.

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

endPrefixMapping, notationDecl, processingInstruction, resolveEntity, setDocumentLocator, skippedEntity, startPrefixMapping, unparsedEntityDecl

Methods inherited from class java.lang.Object

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

Constructor Detail

CreoleXmlHandler

public CreoleXmlHandler(CreoleRegister register,
                        URL directoryUrl,
                        URL creoleFileUrl)

Construction

Method Detail

startDocument

public void startDocument()
                   throws GateSaxException

Called when the SAX parser encounts the beginning of the XML document

Specified by:

startDocument in interface ContentHandler

Overrides:

startDocument in class DefaultHandler

Throws:

GateSaxException

endDocument

public void endDocument()
                 throws GateSaxException

Called when the SAX parser encounts the end of the XML document

Specified by:

endDocument in interface ContentHandler

Overrides:

endDocument in class DefaultHandler

Throws:

GateSaxException

startElement

public void startElement(String uri,
                         String qName,
                         String elementName,
                         Attributes atts)
                  throws SAXException

Called when the SAX parser encounts the beginning of an XML element

Specified by:

startElement in interface ContentHandler

Overrides:

startElement in class DefaultHandler

Throws:

SAXException

endElement

public void endElement(String uri,
                       String qName,
                       String elementName)
                throws GateSaxException,
                       SAXException

Called when the SAX parser encounts the end of an XML element. This is where ResourceData objects get values set, and where they are added to the CreoleRegister when we parsed their complete metadata entries.

Specified by:

endElement in interface ContentHandler

Overrides:

endElement in class DefaultHandler

Throws:

GateSaxException

SAXException

characters

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

Called when the SAX parser encounts text (PCDATA) in the XML doc

Specified by:

characters in interface ContentHandler

Overrides:

characters in class DefaultHandler

Throws:

SAXException

charactersAction

public void charactersAction(char[] text,
                             int start,
                             int length)
                      throws SAXException

This method is called when all characters between specific tags have been read completely

Throws:

SAXException

ignorableWhitespace

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

Called when the SAX parser encounts white space

Specified by:

ignorableWhitespace in interface ContentHandler

Overrides:

ignorableWhitespace in class DefaultHandler

Throws:

SAXException

error

public void error(SAXParseException ex)
           throws SAXException

Called for parse errors.

Specified by:

error in interface ErrorHandler

Overrides:

error in class DefaultHandler

Throws:

SAXException

fatalError

public void fatalError(SAXParseException ex)
                throws SAXException

Called for fatal errors.

Specified by:

fatalError in interface ErrorHandler

Overrides:

fatalError in class DefaultHandler

Throws:

SAXException

warning

public void warning(SAXParseException ex)
             throws SAXException

Called for warnings.

Specified by:

warning in interface ErrorHandler

Overrides:

warning in class DefaultHandler

Throws:

SAXException