modnlp.tc.parser

Class XMLHandler

java.lang.Object

org.xml.sax.helpers.DefaultHandler

modnlp.tc.parser.XMLHandler

All Implemented Interfaces:

org.xml.sax.ContentHandler, org.xml.sax.DTDHandler, org.xml.sax.EntityResolver, org.xml.sax.ErrorHandler

public class XMLHandler
extends org.xml.sax.helpers.DefaultHandler

Handles events generated by a Reuters file through a SAX parser, and store the results as a ParsedCorpus object.

See Also:

NewsParser

Constructor Summary

Constructors

Constructor and Description
XMLHandler(java.lang.String fn) Set up parser

Method Summary

Methods

Modifier and Type	Method and Description
void	characters(char[] ch, int start, int length) Callback for PCDATA events.
void	endElement(java.lang.String namespaceURI, java.lang.String localName, java.lang.String name) Callback method activated when an XML end element 'event' occurs
void	error(org.xml.sax.SAXParseException exception) Report all recoverable errors, and try to continue parsing.
void	fatalError(org.xml.sax.SAXParseException exception) Report all fatal errors, and try to continue parsing.
ParsedCorpus	getParsedCorpus() Implement the Parser interface
void	ignorableWhitespace(char[] ch, int start, int length) Print a message for ignorable whitespace.
void	parse() parseNews: Set up parser object, perform parsing
void	startElement(java.lang.String namespaceURI, java.lang.String localName, java.lang.String name, org.xml.sax.Attributes atts) Callback method activated when an XML start element 'event' occurs
void	warning(org.xml.sax.SAXParseException exception) Report all warnings, and continue parsing.

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

XMLHandler

public XMLHandler(java.lang.String fn)

Set up parser

Method Detail

parse

public void parse()

parseNews: Set up parser object, perform parsing

startElement

public void startElement(java.lang.String namespaceURI,
                java.lang.String localName,
                java.lang.String name,
                org.xml.sax.Attributes atts)

Callback method activated when an XML start element 'event' occurs

Specified by:

startElement in interface org.xml.sax.ContentHandler

Overrides:

startElement in class org.xml.sax.helpers.DefaultHandler

See Also:

HandlerBase

endElement

public void endElement(java.lang.String namespaceURI,
              java.lang.String localName,
              java.lang.String name)

Callback method activated when an XML end element 'event' occurs

Specified by:

endElement in interface org.xml.sax.ContentHandler

Overrides:

endElement in class org.xml.sax.helpers.DefaultHandler

See Also:

HandlerBase

characters

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

Callback for PCDATA events. Store text content from BODY tags.

Specified by:

characters in interface org.xml.sax.ContentHandler

Overrides:

characters in class org.xml.sax.helpers.DefaultHandler

Parameters:

ch[] - array containing XML PCDATA (text)

start - where the text starts

length - where it ends

See Also:

HandlerBase

ignorableWhitespace

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

Print a message for ignorable whitespace.

Specified by:

ignorableWhitespace in interface org.xml.sax.ContentHandler

Overrides:

ignorableWhitespace in class org.xml.sax.helpers.DefaultHandler

See Also:

DocumentHandler.ignorableWhitespace(char[], int, int)

warning

public void warning(org.xml.sax.SAXParseException exception)

Report all warnings, and continue parsing.

Specified by:

warning in interface org.xml.sax.ErrorHandler

Overrides:

warning in class org.xml.sax.helpers.DefaultHandler

See Also:

ErrorHandler.warning(org.xml.sax.SAXParseException)

error

public void error(org.xml.sax.SAXParseException exception)

Report all recoverable errors, and try to continue parsing.

Specified by:

error in interface org.xml.sax.ErrorHandler

Overrides:

error in class org.xml.sax.helpers.DefaultHandler

See Also:

ErrorHandler.error(org.xml.sax.SAXParseException)

fatalError

public void fatalError(org.xml.sax.SAXParseException exception)

Report all fatal errors, and try to continue parsing.

Note: results are no longer reliable once a fatal error has been reported.

Specified by:

fatalError in interface org.xml.sax.ErrorHandler

Overrides:

fatalError in class org.xml.sax.helpers.DefaultHandler

See Also:

ErrorHandler.fatalError(org.xml.sax.SAXParseException)

getParsedCorpus

public ParsedCorpus getParsedCorpus()

Implement the Parser interface