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

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

All Implemented Interfaces:

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

public class GraphReader
extends Handler

SAX XML parser that reads serialized MemGraph graphs. The DTD of the file created is as follows:

 
 <!DOCTYPE dataObject [
   <!ELEMENT dataObject (graph)>
   <!ELEMENT graph (graphClass,graphName,graphProperties*,pathSet*,user*,userLink*,graph*)>
   <!ELEMENT graphClass (#PCDATA)>
   <!ELEMENT graphName (#PCDATA)>
   <!ELEMENT graphProperties (gClass,gValueClass,gType,gValue+)>
   <!ELEMENT gClass (#PCDATA)>
   <!ELEMENT gValueClass (#PCDATA)>
   <!ELEMENT gType (#PCDATA)>
   <!ELEMENT gValue (#PCDATA)>
   <!ELEMENT pathSet (path+)>
   <!ELEMENT path (actor+)>
   <!ELEMENT actor (actorType,actorID)>
   <!ELEMENT actorType (#PCDATA)>
   <!ELEMENT actorID (#PCDATA)>
   <!ELEMENT user (userClass,ID,properties*,page*)>
   <!ELEMENT ID (#PCDATA)>
   <!ELEMENT properties (propertiesClass,valueClass,type,value*)>
   <!ELEMENT type (#PCDATA)>
   <!ELEMENT value (#PCDATA)>
   <!ELEMENT valueClass (#PCDATA)>
   <!ELEMENT userLink (uClass,uStrength,uSourceType,uSourceID,uDestinationType,uDestinationID,uProperties)>
   <!ELEMENT uClass (#PCDATA)>
   <!ELEMENT uSourceType (#PCDATA)>
   <!ELEMENT uSourceID (#PCDATA)>
   <!ELEMENT uStrength (#PCDATA)>
   <!ELEMENT uDestinationType (#PCDATA)>
   <!ELEMENT uDestinationID (#PCDATA)>
   <!ELEMENT uProperties (uPropertiesClass,uValueClass,uPropertiesType,uPropertiesValue+)>
   <!ELEMENT uPropertiesClass (#PCDATA)>
   <!ELEMENT uPropertiesValueClass (#PCDATA)>
   <!ELEMENT uPropertiesType (#PCDATA)>
   <!ELEMENT uPropertiesValue (#PCDATA)>
   <!ELEMENT page (#PCDATA)>
 ]>
 

FIX: page should allow a type declaration

Field Summary

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

properties, site

Constructor Summary

GraphReader()
Creates a new instance of MemGraphReader

Method Summary

void	characters(char[] ch, int start, int length)
Handler	duplicate() Create a complete duplicate of this class
void	endDocument()
void	endElement(java.lang.String uri, java.lang.String localName, java.lang.String qName)
ParsedObject	get() Return the underlying parsed object
void	set(ParsedObject o) Set the underlying parsed object for parsing
void	setDocumentLocator(org.xml.sax.Locator locator)
void	setGraph(Graph type) Set the graph from which to load the data from the parsed object
void	startDocument()
void	startElement(java.lang.String uri, java.lang.String localName, java.lang.String qName, org.xml.sax.Attributes attributes)

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

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

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

GraphReader

public GraphReader()

Creates a new instance of MemGraphReader

Method Detail

startElement

public void startElement(java.lang.String uri,
                         java.lang.String localName,
                         java.lang.String qName,
                         org.xml.sax.Attributes attributes)
                  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

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

get

public ParsedObject get()

Description copied from class: Handler

Return the underlying parsed object

Specified by:

get in class Handler

Returns:

parsed object

endElement

public void endElement(java.lang.String uri,
                       java.lang.String localName,
                       java.lang.String qName)
                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

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

characters

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

setGraph

public void setGraph(Graph type)

Set the graph from which to load the data from the parsed object

Parameters:

type - graph to be loaded by this parser

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

setDocumentLocator

public void setDocumentLocator(org.xml.sax.Locator locator)

Specified by:

setDocumentLocator in interface org.xml.sax.ContentHandler

Overrides:

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