org.openrdf.sail.base

Class SailSourceConnection

java.lang.Object

org.openrdf.sail.helpers.SailConnectionBase

org.openrdf.sail.helpers.NotifyingSailConnectionBase

org.openrdf.sail.base.SailSourceConnection

All Implemented Interfaces:

FederatedServiceResolverClient, InferencerConnection, NotifyingSailConnection, SailConnection

Direct Known Subclasses:

MemoryStoreConnection, NativeStoreConnection

public abstract class SailSourceConnection
extends NotifyingSailConnectionBase
implements InferencerConnection, FederatedServiceResolverClient

A SailConnection implementation that is based on an SailStore.

Author:

James Leigh

Field Summary

Fields inherited from class org.openrdf.sail.helpers.SailConnectionBase

connectionLock, logger, updateLock

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	SailSourceConnection(SailBase sail, SailStore store, FederatedServiceResolver resolver) Creates a new SailConnection, using the given SailStore to manage the state.

Method Summary

Modifier and Type	Method and Description
boolean	addInferredStatement(Resource subj, URI pred, Value obj, Resource... contexts) Adds an inferred statement to a specific context.
void	addStatement(UpdateContext op, Resource subj, URI pred, Value obj, Resource... contexts) The default implementation buffers added statements until the update operation is complete.
void	clearInferred(Resource... contexts) Removes all inferred statements from the specified/all contexts.
protected void	clearInternal(Resource... contexts)
protected void	clearNamespacesInternal()
protected void	closeInternal()
protected void	commitInternal()
protected void	endUpdateInternal(UpdateContext op)
protected CloseableIteration<? extends BindingSet,QueryEvaluationException>	evaluateInternal(TupleExpr tupleExpr, Dataset dataset, BindingSet bindings, boolean includeInferred)
void	flushUpdates() Flushes any pending updates to be processed and the resulting changes to be reported to registered SailConnectionListeners.
protected CloseableIteration<? extends Resource,SailException>	getContextIDsInternal()
protected EvaluationStrategy	getEvaluationStrategy(Dataset dataset, TripleSource tripleSource)
FederatedServiceResolver	getFederatedServiceResolver()
protected String	getNamespaceInternal(String prefix)
protected CloseableIteration<? extends Namespace,SailException>	getNamespacesInternal()
protected CloseableIteration<? extends Statement,SailException>	getStatementsInternal(Resource subj, URI pred, Value obj, boolean includeInferred, Resource... contexts)
protected void	prepareInternal()
boolean	removeInferredStatement(Resource subj, URI pred, Value obj, Resource... contexts) Removes an inferred statement from a specific context.
protected void	removeNamespaceInternal(String prefix)
void	removeStatement(UpdateContext op, Resource subj, URI pred, Value obj, Resource... contexts) The default implementation buffers removed statements until the update operation is complete.
protected void	rollbackInternal()
void	setFederatedServiceResolver(FederatedServiceResolver resolver) Sets the FederatedServiceResolver to use for this client.
protected void	setNamespaceInternal(String prefix, String name)
protected long	sizeInternal(Resource... contexts)
protected void	startTransactionInternal()
void	startUpdate(UpdateContext op) Signals the start of an update operation.

Methods inherited from class org.openrdf.sail.helpers.NotifyingSailConnectionBase

addConnectionListener, hasConnectionListeners, notifyStatementAdded, notifyStatementRemoved, removeConnectionListener

Methods inherited from class org.openrdf.sail.helpers.SailConnectionBase

addStatement, addStatementInternal, autoStartTransaction, begin, begin, clear, clearNamespaces, close, commit, endUpdate, evaluate, flush, getContextIDs, getExclusiveConnectionLock, getNamespace, getNamespaces, getSharedConnectionLock, getStatements, getTransactionIsolation, getTransactionLock, isActive, isActiveOperation, isOpen, iterationClosed, prepare, registerIteration, removeNamespace, removeStatements, removeStatementsInternal, rollback, setNamespace, 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.openrdf.sail.NotifyingSailConnection

addConnectionListener, removeConnectionListener

Methods inherited from interface org.openrdf.sail.SailConnection

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

Constructor Detail

SailSourceConnection

protected SailSourceConnection(SailBase sail,
                               SailStore store,
                               FederatedServiceResolver resolver)

Creates a new SailConnection, using the given SailStore to manage the state.

Parameters:

sail -

store -

resolver -

Method Detail

getFederatedServiceResolver

public FederatedServiceResolver getFederatedServiceResolver()

setFederatedServiceResolver

public void setFederatedServiceResolver(FederatedServiceResolver resolver)

Description copied from interface: FederatedServiceResolverClient

Sets the FederatedServiceResolver to use for this client.

Specified by:

setFederatedServiceResolver in interface FederatedServiceResolverClient

Parameters:

resolver - The resolver to use.

getEvaluationStrategy

protected EvaluationStrategy getEvaluationStrategy(Dataset dataset,
                                                   TripleSource tripleSource)

evaluateInternal

protected CloseableIteration<? extends BindingSet,QueryEvaluationException> evaluateInternal(TupleExpr tupleExpr,
                                                                                             Dataset dataset,
                                                                                             BindingSet bindings,
                                                                                             boolean includeInferred)
                                                                                      throws SailException

Specified by:

evaluateInternal in class SailConnectionBase

Throws:

SailException

closeInternal

protected void closeInternal()
                      throws SailException

Specified by:

closeInternal in class SailConnectionBase

Throws:

SailException

getContextIDsInternal

protected CloseableIteration<? extends Resource,SailException> getContextIDsInternal()
                                                                              throws SailException

Specified by:

getContextIDsInternal in class SailConnectionBase

Throws:

SailException

getStatementsInternal

protected CloseableIteration<? extends Statement,SailException> getStatementsInternal(Resource subj,
                                                                                      URI pred,
                                                                                      Value obj,
                                                                                      boolean includeInferred,
                                                                                      Resource... contexts)
                                                                               throws SailException

Specified by:

getStatementsInternal in class SailConnectionBase

Throws:

SailException

sizeInternal

protected long sizeInternal(Resource... contexts)
                     throws SailException

Specified by:

sizeInternal in class SailConnectionBase

Throws:

SailException

getNamespacesInternal

protected CloseableIteration<? extends Namespace,SailException> getNamespacesInternal()
                                                                               throws SailException

Specified by:

getNamespacesInternal in class SailConnectionBase

Throws:

SailException

getNamespaceInternal

protected String getNamespaceInternal(String prefix)
                               throws SailException

Specified by:

getNamespaceInternal in class SailConnectionBase

Throws:

SailException

startTransactionInternal

protected void startTransactionInternal()
                                 throws SailException

Specified by:

startTransactionInternal in class SailConnectionBase

Throws:

SailException

prepareInternal

protected void prepareInternal()
                        throws SailException

Overrides:

prepareInternal in class SailConnectionBase

Throws:

SailException

commitInternal

protected void commitInternal()
                       throws SailException

Specified by:

commitInternal in class SailConnectionBase

Throws:

SailException

rollbackInternal

protected void rollbackInternal()
                         throws SailException

Specified by:

rollbackInternal in class SailConnectionBase

Throws:

SailException

startUpdate

public void startUpdate(UpdateContext op)
                 throws SailException

Description copied from interface: SailConnection

Signals the start of an update operation. The given op maybe passed to subsequent SailConnection.addStatement(UpdateContext, Resource, URI, Value, Resource...) or SailConnection.removeStatement(UpdateContext, Resource, URI, Value, Resource...) calls before SailConnection.endUpdate(UpdateContext) is called.

Specified by:

startUpdate in interface SailConnection

Overrides:

startUpdate in class SailConnectionBase

Throws:

SailException

addStatement

public void addStatement(UpdateContext op,
                         Resource subj,
                         URI pred,
                         Value obj,
                         Resource... contexts)
                  throws SailException

Description copied from class: SailConnectionBase

The default implementation buffers added statements until the update operation is complete.

Specified by:

addStatement in interface SailConnection

Overrides:

addStatement in class SailConnectionBase

Parameters:

op - operation properties of the UpdateExpr operation producing these statements.

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 specified, a context-less statement will be added.

Throws:

SailException - If the statement could not be added, for example because no transaction is active.

removeStatement

public void removeStatement(UpdateContext op,
                            Resource subj,
                            URI pred,
                            Value obj,
                            Resource... contexts)
                     throws SailException

Description copied from class: SailConnectionBase

The default implementation buffers removed statements until the update operation is complete.

Specified by:

removeStatement in interface SailConnection

Overrides:

removeStatement in class SailConnectionBase

Parameters:

op - operation properties of the UpdateExpr operation removing these statements.

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 statement. Note that this parameter is a vararg and as such is optional. If no contexts are specified the method operates on the entire repository. A null value can be used to match context-less statements.

Throws:

SailException - If the statement could not be removed, for example because no transaction is active.

endUpdateInternal

protected void endUpdateInternal(UpdateContext op)
                          throws SailException

Overrides:

endUpdateInternal in class SailConnectionBase

Throws:

SailException

addInferredStatement

public boolean addInferredStatement(Resource subj,
                                    URI 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

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.

removeInferredStatement

public boolean removeInferredStatement(Resource subj,
                                       URI 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

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

Specified by:

clearInternal in class SailConnectionBase

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

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.

flushUpdates

public void flushUpdates()
                  throws SailException

Description copied from interface: InferencerConnection

Flushes any pending updates to be processed and the resulting changes to be reported to registered SailConnectionListeners.

Specified by:

flushUpdates in interface InferencerConnection

Throws:

SailException - If the updates could not be processed.

setNamespaceInternal

protected void setNamespaceInternal(String prefix,
                                    String name)
                             throws SailException

Specified by:

setNamespaceInternal in class SailConnectionBase

Throws:

SailException

removeNamespaceInternal

protected void removeNamespaceInternal(String prefix)
                                throws SailException

Specified by:

removeNamespaceInternal in class SailConnectionBase

Throws:

SailException

clearNamespacesInternal

protected void clearNamespacesInternal()
                                throws SailException

Specified by:

clearNamespacesInternal in class SailConnectionBase

Throws:

SailException