org.xenei.jena.entities.impl.handlers

Class LiteralHandler

java.lang.Object

org.xenei.jena.entities.impl.handlers.LiteralHandler

All Implemented Interfaces:

ObjectHandler

public class LiteralHandler
extends Object
implements ObjectHandler

An ObjectHandler that encodes objects as Literals and visa versa.

Constructor Summary

Constructors

Constructor and Description
LiteralHandler(com.hp.hpl.jena.datatypes.RDFDatatype literalDatatype) Create a LiteralHandler that converts literalDatatype objects.

Method Summary

Methods

Modifier and Type	Method and Description
com.hp.hpl.jena.rdf.model.Literal	createRDFNode(Object obj) Convert the object to a Literal using the literalDatatype.
boolean	equals(Object o)
int	hashCode()
boolean	isEmpty(Object obj) Returns true if the object is considered empty.
Object	parseObject(com.hp.hpl.jena.rdf.model.RDFNode node) Convert a Literal to an object using the Literaldata type to parse it.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

LiteralHandler

public LiteralHandler(com.hp.hpl.jena.datatypes.RDFDatatype literalDatatype)

Create a LiteralHandler that converts literalDatatype objects.

Parameters:

literalDatatype - The RDFDatatype that will be converted to/from.

Method Detail

createRDFNode

public com.hp.hpl.jena.rdf.model.Literal createRDFNode(Object obj)

Convert the object to a Literal using the literalDatatype.

Specified by:

createRDFNode in interface ObjectHandler

Parameters:

obj - the Object to convert.

Returns:

The literal representation of the object

Throws:

An - exception of object can not be parsed to a lexical form.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

isEmpty

public boolean isEmpty(Object obj)

Description copied from interface: ObjectHandler

Returns true if the object is considered empty.

Specified by:

isEmpty in interface ObjectHandler

Parameters:

obj - the object that would be passed to createRDFNode

Returns:

true if the object is a empty.

parseObject

public Object parseObject(com.hp.hpl.jena.rdf.model.RDFNode node)

Convert a Literal to an object using the Literaldata type to parse it.

Specified by:

parseObject in interface ObjectHandler

Parameters:

node - The literal node.

Returns:

The parsed object

Throws:

An - exception if node is not a Liter that can be parsed by literalDatatype.

toString

public String toString()

Overrides:

toString in class Object