nz.ac.waikato.mcennis.rat.parser.xmlHandler
Class FOAF2Graph

java.lang.Object
  org.xml.sax.helpers.DefaultHandler
      nz.ac.waikato.mcennis.rat.parser.xmlHandler.Handler
          nz.ac.waikato.mcennis.rat.parser.xmlHandler.FOAF2Graph

All Implemented Interfaces:

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

public class FOAF2Graph
extends Handler

SAX XML parser for reading FOAF files of the LiveJournal dialect. See the DataAquisition modules CrawlLastFM, FileReader, or FileReader2 for a description of the modes, relations, and property IDs produced by this parser. TODO: include a DTD of the LiveJournal FOAF.

Field Summary

Fields inherited from class nz.ac.waikato.mcennis.rat.parser.xmlHandler.Handler

properties, site

Constructor Summary

FOAF2Graph()
Create a new Parser using the default graph

FOAF2Graph(Graph m)
Create a new Parser using this graph to load data into

FOAF2Graph(Graph m, WebCrawler c)
Create a new Parser using this graph and parsing new FOAF sites using this crawler

Method Summary

void	characters(char[] arg0, int arg1, int arg2)
Handler	duplicate() Create a complete duplicate of this class
void	endDocument()
void	endElement(java.lang.String arg0, java.lang.String arg1, java.lang.String arg2)
ParsedObject	get() Return the underlying parsed object
Crawler	getCrawler() Return the crawler used or null if none is assigned.
void	set(ParsedObject o) Set the underlying parsed object for parsing
void	setCrawler(Crawler crawler) Set the crawler to be used for spidering new pages
void	setGraph(Graph foaf) Set this graph for loading.
void	startDocument()
void	startElement(java.lang.String arg0, java.lang.String arg1, java.lang.String arg2, org.xml.sax.Attributes arg3)

Methods inherited from class nz.ac.waikato.mcennis.rat.parser.xmlHandler.Handler

check, check, error, fatalError, getName, getParameter, getParameter, init, setName, setProperties, warning

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

endPrefixMapping, ignorableWhitespace, 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

FOAF2Graph

public FOAF2Graph()

Create a new Parser using the default graph

FOAF2Graph

public FOAF2Graph(Graph m)

Create a new Parser using this graph to load data into

Parameters:

m - graph to be loaded

FOAF2Graph

public FOAF2Graph(Graph m,
                  WebCrawler c)

Create a new Parser using this graph and parsing new FOAF sites using this crawler

Parameters:

m - graph to be loaded

c - crawler to parse new sites

Method Detail

getCrawler

public Crawler getCrawler()

Return the crawler used or null if none is assigned.

Returns:

crawler assigned to this object

setCrawler

public void setCrawler(Crawler crawler)

Description copied from class: Handler

Set the crawler to be used for spidering new pages

Overrides:

setCrawler in class Handler

Parameters:

crawler - crawler to be parsing.

get

public ParsedObject get()

Description copied from class: Handler

Return the underlying parsed object

Specified by:

get in class Handler

Returns:

parsed object

setGraph

public void setGraph(Graph foaf)

Set this graph for loading.

Parameters:

foaf - graph to be loaded.

characters

public void characters(char[] arg0,
                       int arg1,
                       int arg2)
                throws org.xml.sax.SAXException

Specified by:

characters in interface org.xml.sax.ContentHandler

Overrides:

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

Throws:

org.xml.sax.SAXException

endDocument

public void endDocument()
                 throws org.xml.sax.SAXException

Specified by:

endDocument in interface org.xml.sax.ContentHandler

Overrides:

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

Throws:

org.xml.sax.SAXException

endElement

public void endElement(java.lang.String arg0,
                       java.lang.String arg1,
                       java.lang.String arg2)
                throws org.xml.sax.SAXException

Specified by:

endElement in interface org.xml.sax.ContentHandler

Overrides:

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

Throws:

org.xml.sax.SAXException

startDocument

public void startDocument()
                   throws org.xml.sax.SAXException

Specified by:

startDocument in interface org.xml.sax.ContentHandler

Overrides:

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

Throws:

org.xml.sax.SAXException

startElement

public void startElement(java.lang.String arg0,
                         java.lang.String arg1,
                         java.lang.String arg2,
                         org.xml.sax.Attributes arg3)
                  throws org.xml.sax.SAXException

Specified by:

startElement in interface org.xml.sax.ContentHandler

Overrides:

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

Throws:

org.xml.sax.SAXException

duplicate

public Handler duplicate()

Description copied from class: Handler

Create a complete duplicate of this class

Specified by:

duplicate in class Handler

Returns:

deep copy of the original.

set

public void set(ParsedObject o)

Description copied from class: Handler

Set the underlying parsed object for parsing

Specified by:

set in class Handler

Parameters:

o - underlying parsed object