edu.unika.aifb.rdf.api.syntax
Class RDFParser

java.lang.Object
  org.xml.sax.helpers.DefaultHandler
      edu.unika.aifb.rdf.api.syntax.RDFParser

All Implemented Interfaces:

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

public class RDFParser
extends org.xml.sax.helpers.DefaultHandler
implements RDFConstants

This class parses the RDF according to the syntax specified in http://www.w3.org/TR/rdf-syntax-grammar/.

Field Summary

Fields inherited from interface edu.unika.aifb.rdf.api.util.RDFConstants

ATTR_ABOUT, ATTR_ABOUT_EACH, ATTR_ABOUT_EACH_PREFIX, ATTR_BAG_ID, ATTR_DATATYPE, ATTR_ID, ATTR_NODE_ID, ATTR_PARSE_TYPE, ATTR_RESOURCE, ELT_ALT, ELT_BAG, ELT_DESCRIPTION, ELT_LI, ELT_RDF, ELT_SEQ, ELT_TYPE, KAONNS, PARSE_TYPE_COLLECTION, PARSE_TYPE_LITERAL, PARSE_TYPE_RESOURCE, RDF_ABOUT, RDF_BAG, RDF_DATATYPE, RDF_DESCRIPTION, RDF_FIRST, RDF_ID, RDF_LI, RDF_LIST, RDF_NIL, RDF_NODE_ID, RDF_OBJECT, RDF_PARSE_TYPE, RDF_PREDICATE, RDF_PROPERTY, RDF_RDF, RDF_RESOURCE, RDF_REST, RDF_STATEMENT, RDF_SUBJECT, RDF_TYPE, RDF_XMLLITERAL, RDFNS, RDFS_CLASS, RDFS_COMMENT, RDFS_DOMAIN, RDFS_LABEL, RDFS_RANGE, RDFS_SUBCLASSOF, RDFS_SUBPROPERTYOF, RDFSNS, XMLLANG, XMLNS

Constructor Summary

RDFParser()
Creates a RDF parser.

Method Summary

void	characters(char[] data, int start, int length) Called when character content is parsed.
void	endDocument() Called when document parsing is ended.
void	endElement(java.lang.String namespaceURI, java.lang.String localName, java.lang.String qName) Called when element parsing is ended.
void	error(org.xml.sax.SAXParseException e) Called when error is encountered.
void	fatalError(org.xml.sax.SAXParseException e) Called when a fatal error is encountered.
boolean	isAnonymousNodeURI(java.lang.String uri) Tests whether supplied URI was generated by this parser in order to label an anonymous node.
void	parse(org.xml.sax.InputSource source, RDFConsumer consumer) Parses RDF from given input source.
void	processingInstruction(java.lang.String target, java.lang.String data) Called when processing instruction is parsed.
void	setDocumentLocator(org.xml.sax.Locator locator) Called to receive a document locator.
void	setErrorHandler(org.xml.sax.ErrorHandler errorHandler) Sets the error handler.
void	startDocument() Called when document parsing is started.
void	startElement(java.lang.String namespaceURI, java.lang.String localName, java.lang.String qName, org.xml.sax.Attributes atts) Called when an element is started.
void	warning(org.xml.sax.SAXParseException e) Called when warning is encountered.

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

RDFParser

public RDFParser()

Creates a RDF parser.

Method Detail

parse

public void parse(org.xml.sax.InputSource source,
                  RDFConsumer consumer)
           throws org.xml.sax.SAXException,
                  java.io.IOException

Parses RDF from given input source.

Parameters:

source - specifies where RDF comes from

consumer - receives notifications about RDF parsing events

Throws:

org.xml.sax.SAXException

java.io.IOException

setDocumentLocator

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

Called to receive a document locator.

Specified by:

setDocumentLocator in interface org.xml.sax.ContentHandler

Overrides:

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

Parameters:

locator - the document locator

setErrorHandler

public void setErrorHandler(org.xml.sax.ErrorHandler errorHandler)

Sets the error handler.

Parameters:

errorHandler - the error handler

warning

public void warning(org.xml.sax.SAXParseException e)
             throws org.xml.sax.SAXException

Called when warning is encountered.

Specified by:

warning in interface org.xml.sax.ErrorHandler

Overrides:

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

Parameters:

e - the exception

Throws:

org.xml.sax.SAXException

error

public void error(org.xml.sax.SAXParseException e)
           throws org.xml.sax.SAXException

Called when error is encountered.

Specified by:

error in interface org.xml.sax.ErrorHandler

Overrides:

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

Parameters:

e - the exception

Throws:

org.xml.sax.SAXException

fatalError

public void fatalError(org.xml.sax.SAXParseException e)
                throws org.xml.sax.SAXException

Called when a fatal error is encountered.

Specified by:

fatalError in interface org.xml.sax.ErrorHandler

Overrides:

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

Parameters:

e - the exception

Throws:

org.xml.sax.SAXException

startDocument

public void startDocument()

Called when document parsing is started.

Specified by:

startDocument in interface org.xml.sax.ContentHandler

Overrides:

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

endDocument

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

Called when document parsing is ended.

Specified by:

endDocument in interface org.xml.sax.ContentHandler

Overrides:

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

Throws:

org.xml.sax.SAXException

startElement

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

Called when an element is started.

Specified by:

startElement in interface org.xml.sax.ContentHandler

Overrides:

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

Parameters:

namespaceURI - the URI of the namespace

localName - the local name of the element

qName - the Q-name of the element

atts - the attributes

Throws:

org.xml.sax.SAXException

endElement

public void endElement(java.lang.String namespaceURI,
                       java.lang.String localName,
                       java.lang.String qName)
                throws org.xml.sax.SAXException

Called when element parsing is ended.

Specified by:

endElement in interface org.xml.sax.ContentHandler

Overrides:

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

Parameters:

namespaceURI - the URI of the namespace

localName - the local name of the element

qName - the Q-name of the element

Throws:

org.xml.sax.SAXException

characters

public void characters(char[] data,
                       int start,
                       int length)
                throws org.xml.sax.SAXException

Called when character content is parsed.

Specified by:

characters in interface org.xml.sax.ContentHandler

Overrides:

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

Parameters:

data - the data buffer containing the characters

start - the start index of character text

length - the length of the character text

Throws:

org.xml.sax.SAXException

processingInstruction

public void processingInstruction(java.lang.String target,
                                  java.lang.String data)
                           throws org.xml.sax.SAXException

Called when processing instruction is parsed.

Specified by:

processingInstruction in interface org.xml.sax.ContentHandler

Overrides:

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

Parameters:

target - the name of the processing instruction

data - the argument to the processing instruction

Throws:

org.xml.sax.SAXException

isAnonymousNodeURI

public boolean isAnonymousNodeURI(java.lang.String uri)

Tests whether supplied URI was generated by this parser in order to label an anonymous node.

Parameters:

uri - the URI

Returns:

true if the URI was generated by this parser to label an anonymous node