Package org.eclipse.rdf4j.sail.memory

Class MemoryStoreConnection

java.lang.Object

org.eclipse.rdf4j.sail.helpers.AbstractSailConnection

org.eclipse.rdf4j.sail.helpers.AbstractNotifyingSailConnection

org.eclipse.rdf4j.sail.base.SailSourceConnection

org.eclipse.rdf4j.sail.memory.MemoryStoreConnection

All Implemented Interfaces:

AutoCloseable, FederatedServiceResolverClient, ThreadSafetyAware, InferencerConnection, NotifyingSailConnection, SailConnection

public class MemoryStoreConnection
extends SailSourceConnection
implements ThreadSafetyAware

Implementation of a Sail Connection for memory stores.

Author:

Arjohn Kampman, jeen

Field Summary

Fields

Modifier and Type	Field	Description
protected final MemoryStore	sail

Fields inherited from class org.eclipse.rdf4j.sail.helpers.AbstractSailConnection

connectionLock, updateLock, useConnectionLock

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	MemoryStoreConnection(MemoryStore sail)

Method Summary

Modifier and Type	Method	Description
boolean	addInferredStatement(Resource subj, IRI pred, Value obj, Resource... contexts)	Adds an inferred statement to a specific context.
protected void	addStatementInternal(Resource subj, IRI pred, Value obj, Resource... contexts)
void	clearInferred(Resource... contexts)	Removes all inferred statements from the specified/all contexts.
protected void	clearInternal(Resource... contexts)
protected void	commitInternal()
MemoryStore	getSail()
boolean	removeInferredStatement(Resource subj, IRI pred, Value obj, Resource... contexts)	Removes an inferred statement from a specific context.
protected void	removeStatementsInternal(Resource subj, IRI pred, Value obj, Resource... contexts)
protected void	rollbackInternal()
protected void	startTransactionInternal()
boolean	supportsConcurrentReads()	A class may support concurrent reads from multiple threads against the same object.

Methods inherited from class org.eclipse.rdf4j.sail.base.SailSourceConnection

addStatement, clearNamespacesInternal, closeInternal, endUpdateInternal, evaluateInternal, explain, flushUpdates, getContextIDsInternal, getEvaluationStrategy, getFederatedServiceResolver, getNamespaceInternal, getNamespacesInternal, getStatementsInternal, prepareInternal, removeNamespaceInternal, removeStatement, setFederatedServiceResolver, setNamespaceInternal, setTransactionSettings, sizeInternal, startUpdate

Methods inherited from class org.eclipse.rdf4j.sail.helpers.AbstractNotifyingSailConnection

addConnectionListener, hasConnectionListeners, notifyStatementAdded, notifyStatementRemoved, removeConnectionListener

Methods inherited from class org.eclipse.rdf4j.sail.helpers.AbstractSailConnection

addStatement, autoStartTransaction, begin, begin, clear, clearNamespaces, close, commit, endUpdate, evaluate, flush, getContextIDs, getExclusiveConnectionLock, getNamespace, getNamespaces, getSailBase, getSharedConnectionLock, getStatements, getTransactionIsolation, getTransactionLock, hasStatement, hasStatementInternal, isActive, isActiveOperation, isOpen, iterationClosed, pendingAdds, pendingRemovals, prepare, registerIteration, removeNamespace, removeStatements, rollback, setNamespace, setStatementsAdded, setStatementsRemoved, size, transactionActive, verifyIsActive, verifyIsOpen

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.rdf4j.sail.NotifyingSailConnection

addConnectionListener, removeConnectionListener

Methods inherited from interface org.eclipse.rdf4j.sail.SailConnection

addStatement, begin, begin, clear, clearNamespaces, close, commit, endUpdate, evaluate, flush, getContextIDs, getNamespace, getNamespaces, getStatements, hasStatement, isActive, isOpen, pendingRemovals, prepare, prepareQuery, removeNamespace, removeStatements, rollback, setNamespace, size

Field Details

sail

protected final MemoryStore sail

Constructor Details

MemoryStoreConnection

protected MemoryStoreConnection(MemoryStore sail)

Method Details

startTransactionInternal

protected void startTransactionInternal()
                                 throws SailException

Overrides:

startTransactionInternal in class SailSourceConnection

Throws:

SailException

commitInternal

protected void commitInternal()
                       throws SailException

Overrides:

commitInternal in class SailSourceConnection

Throws:

SailException

rollbackInternal

protected void rollbackInternal()
                         throws SailException

Overrides:

rollbackInternal in class SailSourceConnection

Throws:

SailException

addStatementInternal

protected void addStatementInternal(Resource subj,
 IRI pred,
 Value obj,
 Resource... contexts)
                             throws SailException

Specified by:

addStatementInternal in class AbstractSailConnection

Throws:

SailException

addInferredStatement

public boolean addInferredStatement(Resource subj,
 IRI pred,
 Value obj,
 Resource... contexts)
                             throws SailException

Description copied from interface: InferencerConnection

Adds an inferred statement to a specific context.

Specified by:

addInferredStatement in interface InferencerConnection

Overrides:

addInferredStatement in class SailSourceConnection

Parameters:

subj - The subject of the statement to add.

pred - The predicate of the statement to add.

obj - The object of the statement to add.

contexts - The context(s) to add the statement to. Note that this parameter is a vararg and as such is optional. If no contexts are supplied the method operates on the entire repository.

Throws:

SailException - If the statement could not be added.

removeStatementsInternal

protected void removeStatementsInternal(Resource subj,
 IRI pred,
 Value obj,
 Resource... contexts)
                                 throws SailException

Specified by:

removeStatementsInternal in class AbstractSailConnection

Throws:

SailException

removeInferredStatement

public boolean removeInferredStatement(Resource subj,
 IRI pred,
 Value obj,
 Resource... contexts)
                                throws SailException

Description copied from interface: InferencerConnection

Removes an inferred statement from a specific context.

Specified by:

removeInferredStatement in interface InferencerConnection

Overrides:

removeInferredStatement in class SailSourceConnection

Parameters:

subj - The subject of the statement that should be removed.

pred - The predicate of the statement that should be removed.

obj - The object of the statement that should be removed.

contexts - The context(s) from which to remove the statements. Note that this parameter is a vararg and as such is optional. If no contexts are supplied the method operates on the entire repository.

Throws:

SailException - If the statement could not be removed.

clearInternal

protected void clearInternal(Resource... contexts)
                      throws SailException

Overrides:

clearInternal in class SailSourceConnection

Throws:

SailException

clearInferred

public void clearInferred(Resource... contexts)
                   throws SailException

Description copied from interface: InferencerConnection

Removes all inferred statements from the specified/all contexts. If no contexts are specified the method operates on the entire repository.

Specified by:

clearInferred in interface InferencerConnection

Overrides:

clearInferred in class SailSourceConnection

Parameters:

contexts - The context(s) from which to remove the statements. Note that this parameter is a vararg and as such is optional. If no contexts are supplied the method operates on the entire repository.

Throws:

SailException - If the statements could not be removed.

getSail

public MemoryStore getSail()

supportsConcurrentReads

public boolean supportsConcurrentReads()

Description copied from interface: ThreadSafetyAware

A class may support concurrent reads from multiple threads against the same object. This ability may change based on an object's current state.

Specified by:

supportsConcurrentReads in interface ThreadSafetyAware

Returns:

true if this object supports concurrent reads