Package org.eclipse.rdf4j.model.base

Class AbstractLiteral

java.lang.Object

org.eclipse.rdf4j.model.base.AbstractLiteral

All Implemented Interfaces:

Serializable, Literal, Value

Direct Known Subclasses:

LmdbLiteral, NumericLiteral, SimpleLiteral

public abstract class AbstractLiteral
extends Object
implements Literal

Base class for Literal, offering common functionality.

Since:

3.5.0

Author:

Alessandro Bollini

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
AbstractLiteral()

Method Summary

Modifier and Type	Method	Description
boolean	booleanValue()	Returns the boolean value of this literal.
byte	byteValue()	Returns the byte value of this literal.
XMLGregorianCalendar	calendarValue()	Returns the XMLGregorianCalendar value of this literal.
BigDecimal	decimalValue()	Returns the decimal 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.
int	hashCode()	Computes the hash code of this literal.
BigInteger	integerValue()	Returns the integer value of this literal.
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.
String	stringValue()	Returns the String-value of a Value object.
TemporalAccessor	temporalAccessorValue()	Retrieves the temporal accessor value of this literal.
TemporalAmount	temporalAmountValue()	Retrieves the temporal amount value of this literal.
String	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

getCoreDatatype, getDatatype, getLabel, getLanguage, isLiteral

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

isBNode, isIRI, isResource, isTriple

Constructor Details

AbstractLiteral

public AbstractLiteral()

Method Details

stringValue

public String stringValue()

Description copied from interface: Value

Returns the String-value of a Value object. This returns either a Literal's label, a IRI's URI or a BNode's ID.

Specified by:

stringValue in interface Value

booleanValue

public boolean booleanValue()

Description copied from interface: Literal

Returns the boolean value of this literal.

Specified by:

booleanValue in interface Literal

Returns:

The boolean value of the literal.

byteValue

public byte byteValue()

Description copied from interface: Literal

Returns the byte value of this literal.

Specified by:

byteValue in interface Literal

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

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

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

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

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

Returns:

The double value of the literal.

integerValue

public BigInteger integerValue()

Description copied from interface: Literal

Returns the integer value of this literal.

Specified by:

integerValue in interface Literal

Returns:

The integer value of the literal.

decimalValue

public BigDecimal decimalValue()

Description copied from interface: Literal

Returns the decimal value of this literal.

Specified by:

decimalValue in interface Literal

Returns:

The decimal value of the literal.

temporalAccessorValue

public TemporalAccessor temporalAccessorValue()
                                       throws DateTimeException

Description copied from interface: Literal

Retrieves the temporal accessor value of this literal.

A temporal accessor representation can be given for literals whose label conforms to the syntax of the following XML Schema 1.1 date/time datatypes:

• xsd:dateTime,
• xsd:time,
• xsd:date,
• xsd:gYearMonth,
• xsd:gYear,
• xsd:gMonthDay,
• xsd:gDay,
• xsd:gMonth.

Temporal accessor representations may be converted to specific java.time values like OffsetDateTime using target static factory methods, for instance OffsetDateTime.from(literal.temporalAccessorValue()).

Note however that java.time doesn't include dedicated classes for some legal XML Schema date/time values, like offset dates (for instance, 2020-11-16+01:00) and xsd:gDay (for instance, ---16).

Specified by:

temporalAccessorValue in interface Literal

Returns:

the temporal accessor value of this literal

Throws:

DateTimeException - if this literal cannot be represented by a TemporalAccessor value

See Also:

• The Java™ Tutorials – Trail: Date Time

temporalAmountValue

public TemporalAmount temporalAmountValue()
                                   throws DateTimeException

Description copied from interface: Literal

Retrieves the temporal amount value of this literal.

A temporal amount representation can be given for literals whose label conforms to the syntax of the XML Schema 2 xsd:duration datatype.

The adoption of the XML Schema 2 definition is a known deviation from the RDF 1.1 standard; well-formedness rules are relaxed to consider all duration components as optional and freely mixable.

Temporal amount representations may be converted to specific java.time values like Duration using target static factory methods, for instance Duration.from(literal.temporalAmountValue()).

Note however that java.time doesn't include dedicated classes for legal XML Schema duration values including both date and time components (for instance, P1YT23H).

Specified by:

temporalAmountValue in interface Literal

Returns:

the temporal amount value of this literal

Throws:

DateTimeException - if this literal cannot be represented by a TemporalAmount value

See Also:

• The Java™ Tutorials – Trail: Date Time

calendarValue

public XMLGregorianCalendar calendarValue()

Description copied from interface: Literal

Returns the XMLGregorianCalendar value of this literal. A calendar representation can be given for literals whose label conforms to the syntax of the following XML Schema datatypes: dateTime, time, date, gYearMonth, gMonthDay, gYear, gMonth or gDay.

Specified by:

calendarValue in interface Literal

Returns:

The calendar value of the literal.

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 Object

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

hashCode

public int hashCode()

Description copied from interface: Literal

Computes the hash code of this literal.

Specified by:

hashCode in interface Literal

Overrides:

hashCode in class Object

Returns:

a hash code for this literal computed as Literal.getLabel().hashCode()

toString

public String toString()

Overrides:

toString in class Object