org.xenei.jena.entities.impl.handlers

Class EntityHandler

java.lang.Object

org.xenei.jena.entities.impl.handlers.EntityHandler

All Implemented Interfaces:

ObjectHandler

public class EntityHandler
extends Object
implements ObjectHandler

An ObjectHandler that creates EntityManager managed entities from RDFResources and visa versa.

Constructor Summary

Constructors

Constructor and Description
EntityHandler(EntityManager entityManager, Class<?> valueClass) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
com.hp.hpl.jena.rdf.model.RDFNode	createRDFNode(Object obj) Create an RDFNode representation for the subject class.
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) Use the entity manager to create an instance of the valueClass from the resource.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

EntityHandler

public EntityHandler(EntityManager entityManager,
             Class<?> valueClass)

Constructor.

Parameters:

entityManager - The EntityManager to use.

valueClass - The Subject annotated class to create.

Method Detail

createRDFNode

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

Create an RDFNode representation for the subject class.

Specified by:

createRDFNode in interface ObjectHandler

Parameters:

obj - The object to represent

Returns:

The RDFNode representation

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)

Use the entity manager to create an instance of the valueClass from the resource. Effectively calls entityManager.read( node.asResource, valueClass )

Specified by:

parseObject in interface ObjectHandler

Parameters:

node - The RDFNode to wrap with the valueClass.

Returns:

the instance of the valueClass.

toString

public String toString()

Overrides:

toString in class Object