Package org.restlet.ext.rdf

Class GraphHandler

java.lang.Object

org.restlet.ext.rdf.GraphHandler

Direct Known Subclasses:

GraphBuilder, RdfN3Writer, RdfNTriplesWriter, RdfTurtleWriter, RdfXmlWriter

public abstract class GraphHandler
extends java.lang.Object

Handler for the content of a Graph. List of callbacks used when parsing or writing a representation of a RDF graph.

Constructor Summary

Constructors

Constructor	Description
GraphHandler()

Method Summary

Modifier and Type	Method	Description
void	endGraph()	Callback method used after the graph is parsed or written.
void	endPrefixMapping(java.lang.String prefix)	Callback method used at the end of a Namespace mapping.
abstract void	link(Reference source, Reference typeRef, Reference target)	Callback method used when a link is parsed or written.
abstract void	link(Reference source, Reference typeRef, Literal target)	Callback method used when a link is parsed or written.
abstract void	link(Graph source, Reference typeRef, Reference target)	Callback method used when a link is parsed or written.
abstract void	link(Graph source, Reference typeRef, Literal target)	Callback method used when a link is parsed or written.
void	startGraph()	Callback method used before the graph is parsed or written.
void	startPrefixMapping(java.lang.String prefix, Reference reference)	Callback method used at the start of a Namespace mapping.

Methods inherited from class java.lang.Object

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

Constructor Detail

GraphHandler

public GraphHandler()

Method Detail

endGraph

public void endGraph()
              throws java.io.IOException

Callback method used after the graph is parsed or written. Does nothing by default.

Throws:

java.io.IOException

endPrefixMapping

public void endPrefixMapping(java.lang.String prefix)

Callback method used at the end of a Namespace mapping. Does nothing by default.

Parameters:

prefix - The Namespace prefix.

link

public abstract void link(Graph source,
                          Reference typeRef,
                          Literal target)

Callback method used when a link is parsed or written.

Parameters:

source - The source or subject of the link.

typeRef - The type reference of the link.

target - The target or object of the link.

link

public abstract void link(Graph source,
                          Reference typeRef,
                          Reference target)

Callback method used when a link is parsed or written.

Parameters:

source - The source or subject of the link.

typeRef - The type reference of the link.

target - The target or object of the link.

link

public abstract void link(Reference source,
                          Reference typeRef,
                          Literal target)

Callback method used when a link is parsed or written.

Parameters:

source - The source or subject of the link.

typeRef - The type reference of the link.

target - The target or object of the link.

link

public abstract void link(Reference source,
                          Reference typeRef,
                          Reference target)

Callback method used when a link is parsed or written.

Parameters:

source - The source or subject of the link.

typeRef - The type reference of the link.

target - The target or object of the link.

startGraph

public void startGraph()
                throws java.io.IOException

Callback method used before the graph is parsed or written. Does nothing by default.

Throws:

java.io.IOException

startPrefixMapping

public void startPrefixMapping(java.lang.String prefix,
                               Reference reference)

Callback method used at the start of a Namespace mapping. Does nothing by default.

Parameters:

prefix - The Namespace prefix being declared.

reference - The Namespace URI mapped to the prefix.