org.jrdf.graph.local
Class GraphElementFactoryImpl

java.lang.Object
  org.jrdf.graph.local.GraphElementFactoryImpl

All Implemented Interfaces:

GraphElementFactory, GraphValueFactory

public final class GraphElementFactoryImpl
extends Object
implements GraphElementFactory

A GraphElementFactory is a class which create the various components of a graph. It is tied to a specific instance of GraphImpl.

Version:

$Revision: 3266 $

Author:

Paul Gearon, Andrew Newman

Constructor Summary

GraphElementFactoryImpl(ResourceFactory newResourceFactory, Localizer newLocalizer, GraphValueFactory newValueFactory)
Package scope constructor.

Method Summary

BlankNode	createBlankNode() Create a blank node that is associated with a specific graph.
Literal	createLiteral(Object object) Converts a known Java class (such as Integer) into an RDF literal (XSD:int).
Literal	createLiteral(String lexicalValue) Creates a new literal with the given lexical value, with no language or datatype.
Literal	createLiteral(String lexicalValue, String languageType) Creates a new literal with the given lexical value, with a given language but no datatype.
Literal	createLiteral(String lexicalValue, URI datatypeURI) Creates a new literal with the given lexical value and given datatype.
Resource	createResource() Create a resource, wrapping a blank node that is associated with a specific graph.
Resource	createResource(BlankNode node) Wrap a blank node in a resource.
Resource	createResource(Node node)
Resource	createResource(URI uri) Create a URI reference wrapped in a Resource.
Resource	createResource(URI uri, boolean validate) Create a URI reference wrapped in a Resource without checking if the URI given is a valid RDF URI, currently if the URI is absolute.
Resource	createResource(URIReference node) Wrap a URIReference in a resource.
URIReference	createURIReference(URI uri) Create a URI reference.
URIReference	createURIReference(URI uri, boolean validate) Create a URI reference without checking if the URI given is a valid RDF URI, currently if the URI is absolute.

Methods inherited from class java.lang.Object

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

Constructor Detail

GraphElementFactoryImpl

public GraphElementFactoryImpl(ResourceFactory newResourceFactory,
                               Localizer newLocalizer,
                               GraphValueFactory newValueFactory)

Package scope constructor.

Method Detail

createResource

public Resource createResource()
                        throws GraphElementFactoryException

Description copied from interface: GraphElementFactory

Create a resource, wrapping a blank node that is associated with a specific graph.

Specified by:

createResource in interface GraphElementFactory

Returns:

the newly created resource wrapping a blank node value.

Throws:

GraphElementFactoryException - if adding a blank node fails.

createResource

public Resource createResource(BlankNode node)
                        throws GraphElementFactoryException

Description copied from interface: GraphElementFactory

Wrap a blank node in a resource.

Specified by:

createResource in interface GraphElementFactory

Parameters:

node - the node to wrap.

Returns:

a new resource.

Throws:

GraphElementFactoryException - if the blank node does not exist.

createResource

public Resource createResource(URIReference node)
                        throws GraphElementFactoryException

Description copied from interface: GraphElementFactory

Wrap a URIReference in a resource.

Specified by:

createResource in interface GraphElementFactory

Parameters:

node - the node to wrap.

Returns:

a new resource.

Throws:

GraphElementFactoryException - if the URIReference does not exist.

createResource

public Resource createResource(URI uri)
                        throws GraphElementFactoryException

Description copied from interface: GraphElementFactory

Create a URI reference wrapped in a Resource.

Specified by:

createResource in interface GraphElementFactory

Parameters:

uri - The URI of the resource.

Returns:

the newly created resource wrapping a URI reference value.

Throws:

GraphElementFactoryException - If the resource failed to be created.

createResource

public Resource createResource(URI uri,
                               boolean validate)
                        throws GraphElementFactoryException

Description copied from interface: GraphElementFactory

Create a URI reference wrapped in a Resource without checking if the URI given is a valid RDF URI, currently if the URI is absolute.

Specified by:

createResource in interface GraphElementFactory

Parameters:

uri - The URI of the resource.

validate - true if we disbale checking to see if the URI is valid.

Returns:

The newly created URI reference value.

Throws:

GraphElementFactoryException - If the resource failed to be created.

createResource

public Resource createResource(Node node)
                        throws GraphElementFactoryException

Specified by:

createResource in interface GraphElementFactory

Throws:

GraphElementFactoryException

createBlankNode

public BlankNode createBlankNode()
                          throws GraphElementFactoryException

Description copied from interface: GraphElementFactory

Create a blank node that is associated with a specific graph.

Specified by:

createBlankNode in interface GraphElementFactory

Returns:

the newly created blank node value.

Throws:

GraphElementFactoryException - if adding a blank node fails.

createURIReference

public URIReference createURIReference(URI uri)
                                throws GraphElementFactoryException

Description copied from interface: GraphValueFactory

Create a URI reference. Checks the validity of the URI (must be absolute).

Specified by:

createURIReference in interface GraphValueFactory

Parameters:

uri - The URI of the resource.

Returns:

the newly created URI reference value.

Throws:

GraphElementFactoryException - If the resource failed to be created.

createURIReference

public URIReference createURIReference(URI uri,
                                       boolean validate)
                                throws GraphElementFactoryException

Description copied from interface: GraphValueFactory

Create a URI reference without checking if the URI given is a valid RDF URI, currently if the URI is absolute.

Specified by:

createURIReference in interface GraphValueFactory

Parameters:

uri - The URI of the resource.

validate - true if we disbale checking to see if the URI is valid.

Returns:

The newly created URI reference value.

Throws:

GraphElementFactoryException - If the resource failed to be created.

createLiteral

public Literal createLiteral(Object object)
                      throws GraphElementFactoryException

Description copied from interface: GraphValueFactory

Converts a known Java class (such as Integer) into an RDF literal (XSD:int).

Specified by:

createLiteral in interface GraphValueFactory

Parameters:

object - the value object (a Java class) to create the literal from.

Returns:

the newly created literal value.

Throws:

GraphElementFactoryException - If the literal failed to be created.

createLiteral

public Literal createLiteral(String lexicalValue)
                      throws GraphElementFactoryException

Description copied from interface: GraphValueFactory

Creates a new literal with the given lexical value, with no language or datatype.

Specified by:

createLiteral in interface GraphValueFactory

Parameters:

lexicalValue - The lexical value for the literal.

Returns:

the newly created literal value.

Throws:

GraphElementFactoryException - If the literal failed to be created.

createLiteral

public Literal createLiteral(String lexicalValue,
                             String languageType)
                      throws GraphElementFactoryException

Description copied from interface: GraphValueFactory

Creates a new literal with the given lexical value, with a given language but no datatype.

Specified by:

createLiteral in interface GraphValueFactory

Parameters:

lexicalValue - The lexical value for the literal. Cannot be null.

languageType - The language of the literal or null if not required.

Returns:

the newly created literal value.

Throws:

GraphElementFactoryException - If the literal failed to be created.

createLiteral

public Literal createLiteral(String lexicalValue,
                             URI datatypeURI)
                      throws GraphElementFactoryException

Description copied from interface: GraphValueFactory

Creates a new literal with the given lexical value and given datatype.

Specified by:

createLiteral in interface GraphValueFactory

Parameters:

lexicalValue - The lexical value for the literal. Cannot be null.

datatypeURI - The URI of the datatype of the literal or null if not required.

Returns:

the newly created literal value.

Throws:

GraphElementFactoryException - If the literal failed to be created.