Package org.eclipse.rdf4j.model.impl

Class NumericLiteral

java.lang.Object

org.eclipse.rdf4j.model.base.AbstractLiteral

org.eclipse.rdf4j.model.impl.NumericLiteral

All Implemented Interfaces:

Serializable, Literal, Value

public class NumericLiteral
extends AbstractLiteral

An extension of AbstractLiteral that stores a numeric value to avoid parsing.

Author:

David Huynh, Jerven Bolleman

See Also:

• Serialized Form

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	NumericLiteral(byte number)	Creates an xsd:byte typed litral with the specified value.
protected	NumericLiteral(double n)	Creates an xsd:double typed litral with the specified value.
protected	NumericLiteral(float n)	Creates an xsd:float typed litral with the specified value.
protected	NumericLiteral(int number)	Creates an xsd:int typed litral with the specified value.
protected	NumericLiteral(long n)	Creates an xsd:long typed litral with the specified value.
protected	NumericLiteral(short number)	Creates an xsd:short typed litral with the specified value.
protected	NumericLiteral(Number number, CoreDatatype datatype)
protected	NumericLiteral(Number number, IRI datatype)	Creates a literal with the specified value and datatype.

Method Summary

Modifier and Type	Method	Description
byte	byteValue()	Returns the byte value of this literal.
double	doubleValue()	Returns the double value of this literal.
boolean	equals(Object o)	Compares this literal to another object.
float	floatValue()	Returns the float value of this literal.
CoreDatatype	getCoreDatatype()	CoreDatatype is an interface for natively supported datatypes in RDF4J.
IRI	getDatatype()	Gets the datatype for this literal.
String	getLabel()	Gets the label (the lexical value) of this literal.
Optional<String>	getLanguage()	Gets the language tag for this literal, normalized to lower case.
int	intValue()	Returns the int value of this literal.
long	longValue()	Returns the long value of this literal.
short	shortValue()	Returns the short value of this literal.

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

booleanValue, calendarValue, decimalValue, hashCode, integerValue, stringValue, temporalAccessorValue, temporalAmountValue, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.rdf4j.model.Literal

isLiteral

Methods inherited from interface org.eclipse.rdf4j.model.Value

isBNode, isIRI, isResource, isTriple

Constructor Details

NumericLiteral

protected NumericLiteral(Number number,
 IRI datatype)

Creates a literal with the specified value and datatype.

NumericLiteral

protected NumericLiteral(Number number,
 CoreDatatype datatype)

NumericLiteral

protected NumericLiteral(byte number)

Creates an xsd:byte typed litral with the specified value.

NumericLiteral

protected NumericLiteral(short number)

Creates an xsd:short typed litral with the specified value.

NumericLiteral

protected NumericLiteral(int number)

Creates an xsd:int typed litral with the specified value.

NumericLiteral

protected NumericLiteral(long n)

Creates an xsd:long typed litral with the specified value.

NumericLiteral

protected NumericLiteral(float n)

Creates an xsd:float typed litral with the specified value.

NumericLiteral

protected NumericLiteral(double n)

Creates an xsd:double typed litral with the specified value.

Method Details

byteValue

public byte byteValue()

Description copied from interface: Literal

Returns the byte value of this literal.

Specified by:

byteValue in interface Literal

Overrides:

byteValue in class AbstractLiteral

Returns:

The byte value of the literal.

shortValue

public short shortValue()

Description copied from interface: Literal

Returns the short value of this literal.

Specified by:

shortValue in interface Literal

Overrides:

shortValue in class AbstractLiteral

Returns:

The short value of the literal.

intValue

public int intValue()

Description copied from interface: Literal

Returns the int value of this literal.

Specified by:

intValue in interface Literal

Overrides:

intValue in class AbstractLiteral

Returns:

The int value of the literal.

longValue

public long longValue()

Description copied from interface: Literal

Returns the long value of this literal.

Specified by:

longValue in interface Literal

Overrides:

longValue in class AbstractLiteral

Returns:

The long value of the literal.

floatValue

public float floatValue()

Description copied from interface: Literal

Returns the float value of this literal.

Specified by:

floatValue in interface Literal

Overrides:

floatValue in class AbstractLiteral

Returns:

The float value of the literal.

doubleValue

public double doubleValue()

Description copied from interface: Literal

Returns the double value of this literal.

Specified by:

doubleValue in interface Literal

Overrides:

doubleValue in class AbstractLiteral

Returns:

The double value of the literal.

getLabel

public String getLabel()

Description copied from interface: Literal

Gets the label (the lexical value) of this literal.

Returns:

The literal's label.

getLanguage

public Optional<String> getLanguage()

Description copied from interface: Literal

Gets the language tag for this literal, normalized to lower case.

Returns:

The language tag for this literal, or Optional.empty() if it doesn't have one.

getDatatype

public IRI getDatatype()

Description copied from interface: Literal

Gets the datatype for this literal.

If Literal.getLanguage() returns a non-empty value than this must return rdf:langString. If no datatype was assigned to this literal by the creator, then this method must return xsd:string.

Returns:

The datatype for this literal.

getCoreDatatype

public CoreDatatype getCoreDatatype()

Description copied from interface: Literal

CoreDatatype is an interface for natively supported datatypes in RDF4J. This includes, among others, the XML Schema datatypes and rdf:langString. CoreDatatypes are implemented as enums and more performant and convenient to work with than IRI-based datatypes. The constant

invalid @link

{@link CoreDatatype#NONE)

} is used to represent a datatype that is not one of the supported core datatypes.

Returns:

The CoreDatatype or

invalid @link

{@link CoreDatatype#NONE)

} if the datatype matches none of the core datatypes. This method will not return null.

equals

public boolean equals(Object o)

Description copied from interface: Literal

Compares this literal to another object.

Specified by:

equals in interface Literal

Overrides:

equals in class AbstractLiteral

Parameters:

o - the object to compare this literal to

Returns:

true, if the other object is an instance of Literal and if their labels, language tags and datatypes are equal