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

Class MemStatementList

java.lang.Object

org.eclipse.rdf4j.sail.memory.model.MemStatementList

public class MemStatementList
extends Object

A dedicated data structure for storing MemStatement objects, offering operations optimized for their use in the memory Sail.

Constructor Summary

Constructors

Constructor	Description
MemStatementList()
MemStatementList(int capacity)

Method Summary

Modifier and Type	Method	Description
void	add(MemStatement st)
void	cleanSnapshots(int currentSnapshot)
void	clear()
MemStatement	getExact(MemResource subject, MemIRI predicate, MemValue object, MemResource context, int snapshot)	Iterates through this list and returns the statement that exactly matches the provided arguments.
int	getGuaranteedLastIndexInUse()
MemStatement[]	getStatements()	An internal method to retrieve the inner array that stores the statements.
boolean	isEmpty()
boolean	optimisticRemove(MemStatement st)
boolean	optimisticRemove(MemStatement st, int index)
void	setPrioritiseCleanup(boolean prioritiseCleanup)
int	size()

Methods inherited from class java.lang.Object

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

Constructor Details

MemStatementList

public MemStatementList()

MemStatementList

public MemStatementList(int capacity)

Method Details

size

public int size()

isEmpty

public boolean isEmpty()

add

public void add(MemStatement st)
         throws InterruptedException

Throws:

InterruptedException

optimisticRemove

public boolean optimisticRemove(MemStatement st)
                         throws InterruptedException

Throws:

InterruptedException

optimisticRemove

public boolean optimisticRemove(MemStatement st,
 int index)
                         throws InterruptedException

Throws:

InterruptedException

clear

public void clear()

cleanSnapshots

public void cleanSnapshots(int currentSnapshot)
                    throws InterruptedException

Throws:

InterruptedException

getExact

public MemStatement getExact(MemResource subject,
 MemIRI predicate,
 MemValue object,
 MemResource context,
 int snapshot)
                      throws InterruptedException

Iterates through this list and returns the statement that exactly matches the provided arguments. The subject, predicate and object should not be null. If the context is null it will match statements with null as their context.

Parameters:

subject -

predicate -

object -

context -

snapshot -

Returns:

Throws:

InterruptedException

getStatements

public MemStatement[] getStatements()
                             throws InterruptedException

An internal method to retrieve the inner array that stores the statements. Useful to reduce the number of volatile reads.

Returns:

the underlying array og MemStatements

Throws:

InterruptedException

getGuaranteedLastIndexInUse

public int getGuaranteedLastIndexInUse()

setPrioritiseCleanup

public void setPrioritiseCleanup(boolean prioritiseCleanup)