org.eclipse.rdf4j.model.impl

Class AbstractValueFactory

java.lang.Object

org.eclipse.rdf4j.model.impl.AbstractValueFactory

All Implemented Interfaces:

ValueFactory

Direct Known Subclasses:

SimpleValueFactory, ValueFactoryBase

public abstract class AbstractValueFactory
extends Object
implements ValueFactory

Abstract base class for ValueFactory implementations. It implements all basic Value creation methods by using the default implementations (SimpleBNode, SimpleIRI, etc), and type-optimized subclasses (e.g. BooleanLiteral, NumericLiteral) where possible.

Author:

Arjohn Kampman, Jeen Broekstra

Constructor Summary

Constructors

Constructor and Description
AbstractValueFactory()

Method Summary

Modifier and Type	Method and 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, IRI datatype) Calls createNumericLiteral(Number, IRI) with the supplied value and datatype as parameters.
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(BigDecimal bigDecimal) Creates a new literal representing the specified bigDecimal that is typed using the appropriate XML Schema date/time datatype.
Literal	createLiteral(BigInteger bigInteger) Creates a new literal representing the specified bigInteger that is typed using the appropriate XML Schema date/time datatype.
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 XMLSchema.BYTE as parameters.
Literal	createLiteral(Date date) Converts the supplied Date to a XMLGregorianCalendar, then calls ValueFactory.createLiteral(XMLGregorianCalendar).
Literal	createLiteral(double value) Calls createFPLiteral(Number, IRI) with the supplied value and XMLSchema.DOUBLE as parameters.
Literal	createLiteral(float value) Calls createFPLiteral(Number, IRI) with the supplied value and XMLSchema.FLOAT as parameters.
Literal	createLiteral(int value) Calls createIntegerLiteral(Number, IRI) with the supplied value and XMLSchema.INT as parameters.
Literal	createLiteral(long value) Calls createIntegerLiteral(Number, IRI) with the supplied value and XMLSchema.LONG as parameters.
Literal	createLiteral(short value) Calls createIntegerLiteral(Number, IRI) with the supplied value and XMLSchema.SHORT as parameters.
Literal	createLiteral(String value) Creates a new literal with the supplied label.
Literal	createLiteral(String value, IRI datatype) Creates a new literal with the supplied label and datatype.
Literal	createLiteral(String value, String language) Creates a new literal with the supplied label and language attribute.
Literal	createLiteral(String label, URI datatype) Deprecated.
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, 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.
Statement	createStatement(Resource subject, URI predicate, Value object) Deprecated.
Statement	createStatement(Resource subject, URI predicate, Value object, Resource context) Deprecated.
URI	createURI(String uri) Deprecated.
URI	createURI(String namespace, String localName) Deprecated.
protected void	initBNodeParams() Generates a new bnode prefix and resets nextBNodeID to 1 .

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractValueFactory

public AbstractValueFactory()

Method Detail

createURI

@Deprecated
public URI createURI(String uri)

Deprecated.

Description copied from interface: ValueFactory

Creates a new URI from the supplied string-representation.

Specified by:

createURI in interface ValueFactory

Parameters:

uri - A string-representation of a URI.

Returns:

An object representing the URI.

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

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

Parameters:

namespace - The IRI's namespace.

localName - The IRI's local name.

createURI

@Deprecated
public URI createURI(String namespace,
                                 String localName)

Deprecated.

Description copied from interface: ValueFactory

Creates a new URI from the supplied namespace and local name.

Specified by:

createURI in interface ValueFactory

Returns:

An object representing the URI.

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

Parameters:

nodeID - The blank node identifier.

Returns:

An object representing the blank node.

createLiteral

@Deprecated
public Literal createLiteral(String label,
                                         URI datatype)

Deprecated.

Description copied from interface: ValueFactory

Creates a new literal with the supplied label and datatype.

Specified by:

createLiteral in interface ValueFactory

Parameters:

label - The literal's label.

datatype - The literal's datatype, or null if the literal doesn't have a datatype.

createLiteral

public Literal createLiteral(String value)

Description copied from interface: ValueFactory

Creates a new literal with the supplied label.

Specified by:

createLiteral in interface ValueFactory

Parameters:

value - The literal's label.

createLiteral

public Literal createLiteral(String value,
                             String language)

Description copied from interface: ValueFactory

Creates a new literal with the supplied label and language attribute.

Specified by:

createLiteral in interface ValueFactory

Parameters:

value - The literal's label.

language - The literal's language attribute, or null if the literal doesn't have a language.

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

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

Parameters:

value - The literal's label.

datatype - The literal's datatype, or null if the literal doesn't have a datatype.

createStatement

@Deprecated
public Statement createStatement(Resource subject,
                                             URI predicate,
                                             Value object)

Deprecated.

Description copied from interface: ValueFactory

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

Specified by:

createStatement in interface ValueFactory

Parameters:

subject - The statement's subject.

predicate - The statement's predicate.

object - The statement's object.

Returns:

The created statement.

createStatement

@Deprecated
public Statement createStatement(Resource subject,
                                             URI predicate,
                                             Value object,
                                             Resource context)

Deprecated.

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

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)

Description copied from interface: ValueFactory

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

Specified by:

createStatement in interface ValueFactory

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

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.

initBNodeParams

protected void initBNodeParams()

Generates a new bnode prefix and resets nextBNodeID to 1 .

createBNode

public BNode createBNode()

Description copied from interface: ValueFactory

Creates a new bNode.

Specified by:

createBNode in interface ValueFactory

Returns:

An object representing the bNode.

createLiteral

public Literal createLiteral(byte value)

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

Specified by:

createLiteral in interface ValueFactory

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 XMLSchema.SHORT as parameters.

Specified by:

createLiteral in interface ValueFactory

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 XMLSchema.INT as parameters.

Specified by:

createLiteral in interface ValueFactory

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 XMLSchema.LONG as parameters.

Specified by:

createLiteral in interface ValueFactory

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.

createLiteral

public Literal createLiteral(float value)

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

Specified by:

createLiteral in interface ValueFactory

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 XMLSchema.DOUBLE as parameters.

Specified by:

createLiteral in interface ValueFactory

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 using the appropriate XML Schema date/time datatype.

Specified by:

createLiteral in interface ValueFactory

createLiteral

public Literal createLiteral(BigDecimal bigDecimal)

Description copied from interface: ValueFactory

Creates a new literal representing the specified bigDecimal that is typed using the appropriate XML Schema date/time datatype.

Specified by:

createLiteral in interface ValueFactory

createFPLiteral

protected Literal createFPLiteral(Number value,
                                  IRI datatype)

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

createNumericLiteral

protected Literal createNumericLiteral(Number number,
                                       IRI datatype)

Creates specific optimized subtypes of SimpleLiteral for numeric datatypes.

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

Parameters:

calendar - The value for the literal.

Returns:

An typed literal for the specified calendar.

See Also:

XMLGregorianCalendar.toXMLFormat(), XMLGregorianCalendar.getXMLSchemaType(), XMLDatatypeUtil.qnameToURI(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