Package org.eclipse.rdf4j.model.impl

Class SimpleValueFactory

java.lang.Object

org.eclipse.rdf4j.model.base.AbstractValueFactory

org.eclipse.rdf4j.model.impl.SimpleValueFactory

All Implemented Interfaces:

ValueFactory

Direct Known Subclasses:

ValueStore

public class SimpleValueFactory
extends AbstractValueFactory

Default implementation of the ValueFactory interface.

Author:

Arjohn Kampman

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	SimpleValueFactory()	Hidden constructor to enforce singleton pattern.

Method Summary

Modifier and Type	Method	Description
BNode	createBNode()	Creates a new bNode.
BNode	createBNode(String nodeID)	Creates a new blank node with the given node identifier.
protected Literal	createFPLiteral(Number value, CoreDatatype.XSD datatype)
protected Literal	createFPLiteral(Number value, IRI datatype)	Calls createNumericLiteral(Number, IRI) with the supplied value and datatype as parameters.
protected Literal	createIntegerLiteral(Number value, CoreDatatype.XSD datatype)
protected Literal	createIntegerLiteral(Number value, IRI datatype)	Calls createNumericLiteral(Number, IRI) with the supplied value and datatype as parameters.
IRI	createIRI(String iri)	Creates a new IRI from the supplied string-representation.
IRI	createIRI(String namespace, String localName)	Creates a new IRI from the supplied namespace and local name.
Literal	createLiteral(boolean b)	Creates a new xsd:boolean-typed literal representing the specified value.
Literal	createLiteral(byte value)	Calls createIntegerLiteral(Number, IRI) with the supplied value and XSD.BYTE as parameters.
Literal	createLiteral(double value)	Calls createFPLiteral(Number, IRI) with the supplied value and XSD.DOUBLE as parameters.
Literal	createLiteral(float value)	Calls createFPLiteral(Number, IRI) with the supplied value and XSD.FLOAT as parameters.
Literal	createLiteral(int value)	Calls createIntegerLiteral(Number, IRI) with the supplied value and XSD.INT as parameters.
Literal	createLiteral(long value)	Calls createIntegerLiteral(Number, IRI) with the supplied value and XSD.LONG as parameters.
Literal	createLiteral(short value)	Calls createIntegerLiteral(Number, IRI) with the supplied value and XSD.SHORT as parameters.
Literal	createLiteral(String value)	Creates a new literal with the supplied label.
Literal	createLiteral(String value, String language)	Creates a new literal with the supplied label and language attribute.
Literal	createLiteral(String value, IRI datatype)	Creates a new literal with the supplied label and datatype.
Literal	createLiteral(BigDecimal bigDecimal)	Creates a new literal representing the specified bigDecimal that is typed as an xsd:decimal.
Literal	createLiteral(BigInteger bigInteger)	Creates a new literal representing the specified bigInteger that is typed as an xsd:integer.
Literal	createLiteral(Date date)	Converts the supplied Date to a XMLGregorianCalendar, then calls ValueFactory.createLiteral(XMLGregorianCalendar).
Literal	createLiteral(XMLGregorianCalendar calendar)	Calls ValueFactory.createLiteral(String, IRI) with the String-value of the supplied calendar and the appropriate datatype as parameters.
protected Literal	createNumericLiteral(Number number, CoreDatatype datatype)
protected Literal	createNumericLiteral(Number number, IRI datatype)	Creates specific optimized subtypes of SimpleLiteral for numeric datatypes.
Statement	createStatement(Resource subject, IRI predicate, Value object)	Creates a new statement with the supplied subject, predicate and object.
Statement	createStatement(Resource subject, IRI predicate, Value object, Resource context)	Creates a new statement with the supplied subject, predicate and object and associated context.
Triple	createTriple(Resource subject, IRI predicate, Value object)	Creates a new RDF-star triple with the supplied subject, predicate and object.
static SimpleValueFactory	getInstance()	Provide a single shared instance of a SimpleValueFactory.

Methods inherited from class org.eclipse.rdf4j.model.base.AbstractValueFactory

createLiteral, createLiteral, createLiteral, createLiteral

Methods inherited from class java.lang.Object

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

Constructor Details

SimpleValueFactory

protected SimpleValueFactory()

Hidden constructor to enforce singleton pattern.

Method Details

getInstance

public static SimpleValueFactory getInstance()

Provide a single shared instance of a SimpleValueFactory.

Returns:

a singleton instance of SimpleValueFactory.

createIRI

public IRI createIRI(String iri)

Description copied from interface: ValueFactory

Creates a new IRI from the supplied string-representation.

Specified by:

createIRI in interface ValueFactory

Overrides:

createIRI in class AbstractValueFactory

Parameters:

iri - A string-representation of a IRI.

Returns:

An object representing the IRI.

createIRI

public IRI createIRI(String namespace,
 String localName)

Description copied from interface: ValueFactory

Creates a new IRI from the supplied namespace and local name. Calling this method is funtionally equivalent to calling createIRI(namespace+localName), but allows the ValueFactory to reuse supplied namespace and local name strings whenever possible. Note that the values returned by IRI.getNamespace() and IRI.getLocalName() are not necessarily the same as the values that are supplied to this method.

Specified by:

createIRI in interface ValueFactory

Overrides:

createIRI in class AbstractValueFactory

Parameters:

namespace - The IRI's namespace.

localName - The IRI's local name.

createBNode

public BNode createBNode(String nodeID)

Description copied from interface: ValueFactory

Creates a new blank node with the given node identifier.

Specified by:

createBNode in interface ValueFactory

Overrides:

createBNode in class AbstractValueFactory

Parameters:

nodeID - The blank node identifier.

Returns:

An object representing the blank node.

createLiteral

public Literal createLiteral(String value)

Description copied from interface: ValueFactory

Creates a new literal with the supplied label. The return value of Literal.getDatatype() for the returned object must be xsd:string.

Specified by:

createLiteral in interface ValueFactory

Overrides:

createLiteral in class AbstractValueFactory

Parameters:

value - The literal's label, must not be null.

Returns:

A literal for the specified value.

createLiteral

public Literal createLiteral(String value,
 String language)

Description copied from interface: ValueFactory

Creates a new literal with the supplied label and language attribute. The return value of Literal.getDatatype() for the returned object must be rdf:langString.

Specified by:

createLiteral in interface ValueFactory

Overrides:

createLiteral in class AbstractValueFactory

Parameters:

value - The literal's label, must not be null.

language - The literal's language attribute, must not be null.

Returns:

A literal for the specified value and language attribute.

createLiteral

public Literal createLiteral(boolean b)

Description copied from interface: ValueFactory

Creates a new xsd:boolean-typed literal representing the specified value.

Specified by:

createLiteral in interface ValueFactory

Overrides:

createLiteral in class AbstractValueFactory

Parameters:

b - The value for the literal.

Returns:

An xsd:boolean-typed literal for the specified value.

createLiteral

public Literal createLiteral(String value,
 IRI datatype)

Description copied from interface: ValueFactory

Creates a new literal with the supplied label and datatype.

Specified by:

createLiteral in interface ValueFactory

Overrides:

createLiteral in class AbstractValueFactory

Parameters:

value - The literal's label, must not be null.

datatype - The literal's datatype. If it is null, the datatype xsd:string will be assigned to this literal.

Returns:

A literal for the specified value and type.

createStatement

public Statement createStatement(Resource subject,
 IRI predicate,
 Value object)

Description copied from interface: ValueFactory

Creates a new statement with the supplied subject, predicate and object.

Specified by:

createStatement in interface ValueFactory

Overrides:

createStatement in class AbstractValueFactory

Parameters:

subject - The statement's subject.

predicate - The statement's predicate.

object - The statement's object.

Returns:

The created statement.

createStatement

public Statement createStatement(Resource subject,
 IRI predicate,
 Value object,
 Resource context)

Description copied from interface: ValueFactory

Creates a new statement with the supplied subject, predicate and object and associated context.

Specified by:

createStatement in interface ValueFactory

Overrides:

createStatement in class AbstractValueFactory

Parameters:

subject - The statement's subject.

predicate - The statement's predicate.

object - The statement's object.

context - The statement's context.

Returns:

The created statement.

createTriple

public Triple createTriple(Resource subject,
 IRI predicate,
 Value object)

Description copied from interface: ValueFactory

Creates a new RDF-star triple with the supplied subject, predicate and object.

Specified by:

createTriple in interface ValueFactory

Overrides:

createTriple in class AbstractValueFactory

Parameters:

subject - The statement's subject.

predicate - The statement's predicate.

object - The statement's object.

Returns:

The created triple.

createBNode

public BNode createBNode()

Description copied from interface: ValueFactory

Creates a new bNode.

Specified by:

createBNode in interface ValueFactory

Overrides:

createBNode in class AbstractValueFactory

Returns:

An object representing the bNode.

createLiteral

public Literal createLiteral(byte value)

Calls createIntegerLiteral(Number, IRI) with the supplied value and XSD.BYTE as parameters.

Specified by:

createLiteral in interface ValueFactory

Overrides:

createLiteral in class AbstractValueFactory

Parameters:

value - The value for the literal.

Returns:

An xsd:byte-typed literal for the specified value.

createLiteral

public Literal createLiteral(short value)

Calls createIntegerLiteral(Number, IRI) with the supplied value and XSD.SHORT as parameters.

Specified by:

createLiteral in interface ValueFactory

Overrides:

createLiteral in class AbstractValueFactory

Parameters:

value - The value for the literal.

Returns:

An xsd:short-typed literal for the specified value.

createLiteral

public Literal createLiteral(int value)

Calls createIntegerLiteral(Number, IRI) with the supplied value and XSD.INT as parameters.

Specified by:

createLiteral in interface ValueFactory

Overrides:

createLiteral in class AbstractValueFactory

Parameters:

value - The value for the literal.

Returns:

An xsd:int-typed literal for the specified value.

createLiteral

public Literal createLiteral(long value)

Calls createIntegerLiteral(Number, IRI) with the supplied value and XSD.LONG as parameters.

Specified by:

createLiteral in interface ValueFactory

Overrides:

createLiteral in class AbstractValueFactory

Parameters:

value - The value for the literal.

Returns:

An xsd:long-typed literal for the specified value.

createIntegerLiteral

protected Literal createIntegerLiteral(Number value,
 IRI datatype)

Calls createNumericLiteral(Number, IRI) with the supplied value and datatype as parameters.

createIntegerLiteral

protected Literal createIntegerLiteral(Number value,
 CoreDatatype.XSD datatype)

createLiteral

public Literal createLiteral(float value)

Calls createFPLiteral(Number, IRI) with the supplied value and XSD.FLOAT as parameters.

Specified by:

createLiteral in interface ValueFactory

Overrides:

createLiteral in class AbstractValueFactory

Parameters:

value - The value for the literal.

Returns:

An xsd:float-typed literal for the specified value.

createLiteral

public Literal createLiteral(double value)

Calls createFPLiteral(Number, IRI) with the supplied value and XSD.DOUBLE as parameters.

Specified by:

createLiteral in interface ValueFactory

Overrides:

createLiteral in class AbstractValueFactory

Parameters:

value - The value for the literal.

Returns:

An xsd:double-typed literal for the specified value.

createLiteral

public Literal createLiteral(BigInteger bigInteger)

Description copied from interface: ValueFactory

Creates a new literal representing the specified bigInteger that is typed as an xsd:integer.

Specified by:

createLiteral in interface ValueFactory

Overrides:

createLiteral in class AbstractValueFactory

Parameters:

bigInteger - The value for the literal.

Returns:

An xsd:integer-typed literal for the specified value.

createLiteral

public Literal createLiteral(BigDecimal bigDecimal)

Description copied from interface: ValueFactory

Creates a new literal representing the specified bigDecimal that is typed as an xsd:decimal.

Specified by:

createLiteral in interface ValueFactory

Overrides:

createLiteral in class AbstractValueFactory

Parameters:

bigDecimal - The value for the literal.

Returns:

An xsd:decimal-typed literal for the specified value.

createFPLiteral

protected Literal createFPLiteral(Number value,
 IRI datatype)

Calls createNumericLiteral(Number, IRI) with the supplied value and datatype as parameters.

createFPLiteral

protected Literal createFPLiteral(Number value,
 CoreDatatype.XSD datatype)

createNumericLiteral

protected Literal createNumericLiteral(Number number,
 IRI datatype)

Creates specific optimized subtypes of SimpleLiteral for numeric datatypes.

createNumericLiteral

protected Literal createNumericLiteral(Number number,
 CoreDatatype datatype)

createLiteral

public Literal createLiteral(XMLGregorianCalendar calendar)

Calls ValueFactory.createLiteral(String, IRI) with the String-value of the supplied calendar and the appropriate datatype as parameters.

Specified by:

createLiteral in interface ValueFactory

Overrides:

createLiteral in class AbstractValueFactory

Parameters:

calendar - The value for the literal.

Returns:

A typed literal for the specified calendar.

See Also:

• XMLGregorianCalendar.toXMLFormat()
• XMLGregorianCalendar.getXMLSchemaType()
• XMLDatatypeUtil.qnameToCoreDatatype(javax.xml.namespace.QName)

createLiteral

public Literal createLiteral(Date date)

Converts the supplied Date to a XMLGregorianCalendar, then calls ValueFactory.createLiteral(XMLGregorianCalendar).

Specified by:

createLiteral in interface ValueFactory

Overrides:

createLiteral in class AbstractValueFactory

Parameters:

date - The value for the literal.

Returns:

A typed literal for the specified date.