Package org.eclipse.rdf4j.sail.memory.model

Class MemLiteral

java.lang.Object

org.eclipse.rdf4j.model.base.AbstractLiteral

org.eclipse.rdf4j.model.impl.SimpleLiteral

org.eclipse.rdf4j.sail.memory.model.MemLiteral

All Implemented Interfaces:

Serializable, Literal, Value, MemValue

Direct Known Subclasses:

BooleanMemLiteral, CalendarMemLiteral, DecimalMemLiteral, IntegerMemLiteral, NumericMemLiteral

public class MemLiteral
extends SimpleLiteral
implements MemValue

A MemoryStore-specific extension of Literal giving it node properties.

Author:

Arjohn Kampman

See Also:

• Serialized Form

Field Summary

Fields inherited from interface org.eclipse.rdf4j.sail.memory.model.MemValue

EMPTY_LIST

Constructor Summary

Constructors

Constructor	Description
MemLiteral(Object creator, String label)	Creates a new Literal which will get the supplied label.
MemLiteral(Object creator, String label, String lang)	Creates a new Literal which will get the supplied label and language code.
MemLiteral(Object creator, String label, CoreDatatype datatype)
MemLiteral(Object creator, String label, IRI datatype)	Creates a new Literal which will get the supplied label and datatype.
MemLiteral(Object creator, String label, IRI datatype, CoreDatatype coreDatatype)

Method Summary

Modifier and Type	Method	Description
void	addObjectStatement(MemStatement st)	Adds a statement to this MemValue's list of statements for which it is the object.
void	cleanSnapshotsFromObjectStatements(int currentSnapshot)	Removes statements from old snapshots (those that have expired at or before the specified snapshot version) from this MemValue's list of statements for which it is the object.
Object	getCreator()	Returns the object that created this MemValue.
int	getObjectStatementCount()	Gets the number of statements for which this MemValue is the object.
MemStatementList	getObjectStatementList()	Gets the list of statements for which this MemValue is the object.
boolean	hasContextStatements()
boolean	hasObjectStatements()
boolean	hasPredicateStatements()
boolean	hasStatements()	Checks whether this MemValue has any statements.
boolean	hasSubjectStatements()

Methods inherited from class org.eclipse.rdf4j.model.impl.SimpleLiteral

booleanValue, byteValue, calendarValue, decimalValue, doubleValue, equals, floatValue, getCoreDatatype, getDatatype, getLabel, getLanguage, hashCode, integerValue, intValue, longValue, setDatatype, setDatatype, setDatatype, setLabel, setLanguage, shortValue, stringValue, toString

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

temporalAccessorValue, temporalAmountValue

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, stringValue

Constructor Details

MemLiteral

public MemLiteral(Object creator,
 String label)

Creates a new Literal which will get the supplied label.

Parameters:

creator - The object that is creating this MemLiteral.

label - The label for this literal.

MemLiteral

public MemLiteral(Object creator,
 String label,
 String lang)

Creates a new Literal which will get the supplied label and language code.

Parameters:

creator - The object that is creating this MemLiteral.

label - The label for this literal.

lang - The language code of the supplied label.

MemLiteral

public MemLiteral(Object creator,
 String label,
 IRI datatype)

Creates a new Literal which will get the supplied label and datatype.

Parameters:

creator - The object that is creating this MemLiteral.

label - The label for this literal.

datatype - The datatype of the supplied label.

MemLiteral

public MemLiteral(Object creator,
 String label,
 IRI datatype,
 CoreDatatype coreDatatype)

MemLiteral

public MemLiteral(Object creator,
 String label,
 CoreDatatype datatype)

Method Details

getCreator

public Object getCreator()

Description copied from interface: MemValue

Returns the object that created this MemValue. MemValues are only unique within a single repository, but an application could use several repositories at the same time, passing MemValues generated by one Sail to another Sail. In such situations, the MemValue of the first Sail cannot be used by the second Sail.

Specified by:

getCreator in interface MemValue

hasStatements

public boolean hasStatements()

Description copied from interface: MemValue

Checks whether this MemValue has any statements. A MemValue object has statements if there is at least one statement where it is used as the subject, predicate, object or context value.

Specified by:

hasStatements in interface MemValue

Returns:

true if the MemValue has statements, false otherwise.

getObjectStatementList

public MemStatementList getObjectStatementList()

Description copied from interface: MemValue

Gets the list of statements for which this MemValue is the object.

Specified by:

getObjectStatementList in interface MemValue

Returns:

A MemStatementList containing the statements.

getObjectStatementCount

public int getObjectStatementCount()

Description copied from interface: MemValue

Gets the number of statements for which this MemValue is the object.

Specified by:

getObjectStatementCount in interface MemValue

Returns:

An integer larger than or equal to 0.

addObjectStatement

public void addObjectStatement(MemStatement st)
                        throws InterruptedException

Description copied from interface: MemValue

Adds a statement to this MemValue's list of statements for which it is the object.

Specified by:

addObjectStatement in interface MemValue

Throws:

InterruptedException

cleanSnapshotsFromObjectStatements

public void cleanSnapshotsFromObjectStatements(int currentSnapshot)
                                        throws InterruptedException

Description copied from interface: MemValue

Removes statements from old snapshots (those that have expired at or before the specified snapshot version) from this MemValue's list of statements for which it is the object.

Specified by:

cleanSnapshotsFromObjectStatements in interface MemValue

Parameters:

currentSnapshot - The current snapshot version.

Throws:

InterruptedException

hasSubjectStatements

public boolean hasSubjectStatements()

Specified by:

hasSubjectStatements in interface MemValue

hasPredicateStatements

public boolean hasPredicateStatements()

Specified by:

hasPredicateStatements in interface MemValue

hasObjectStatements

public boolean hasObjectStatements()

Specified by:

hasObjectStatements in interface MemValue

hasContextStatements

public boolean hasContextStatements()

Specified by:

hasContextStatements in interface MemValue