org.eclipse.rdf4j.sail.shacl

Class ShaclSailConnection

java.lang.Object

org.eclipse.rdf4j.sail.helpers.SailConnectionWrapper

org.eclipse.rdf4j.sail.helpers.NotifyingSailConnectionWrapper

org.eclipse.rdf4j.sail.shacl.ShaclSailConnection

All Implemented Interfaces:

AutoCloseable, FederatedServiceResolverClient, NotifyingSailConnection, SailConnection, SailConnectionListener

public class ShaclSailConnection
extends NotifyingSailConnectionWrapper
implements SailConnectionListener

Author:

Heshan Jayasinghe

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	ShaclSailConnection.Stats

Field Summary

Fields

Modifier and Type	Field and Description
ShaclSail	sail
ShaclSailConnection.Stats	stats

Method Summary

Modifier and Type	Method and Description
void	addStatement(Resource subj, IRI pred, Value obj, Resource... contexts) Adds a statement to the store.
void	addStatement(UpdateContext modify, Resource subj, IRI pred, Value obj, Resource... contexts) Adds a statement to the store.
void	begin() Begins a transaction requiring SailConnection.commit() or SailConnection.rollback() to be called to close the transaction.
void	begin(IsolationLevel level) Begins a transaction with the specified IsolationLevel level, requiring SailConnection.commit() or SailConnection.rollback() to be called to close the transaction.
void	close() Closes the connection.
void	commit() Commits any updates that have been performed since the last time SailConnection.commit() or SailConnection.rollback() was called.
SailConnection	getAddedStatements()
PlanNode	getCachedNodeFor(Select select)
NotifyingSailConnection	getPreviousStateConnection()
RdfsSubClassOfReasoner	getRdfsSubClassOfReasoner()
SailConnection	getRemovedStatements()
CloseableIteration<? extends Statement,SailException>	getStatements(Resource subj, IRI pred, Value obj, boolean includeInferred, Resource... contexts) Gets all statements from the specified contexts that have a specific subject, predicate and/or object.
boolean	hasStatement(Resource subj, IRI pred, Value obj, boolean includeInferred, Resource... contexts) Determines if the store contains any statements from the specified contexts that have a specific subject, predicate and/or object.
void	prepare() Checks for an error state in the active transaction that would force the transaction to be rolled back.
void	removeStatement(UpdateContext modify, Resource subj, IRI pred, Value obj, Resource... contexts) Removes all statements matching the specified subject, predicate and object from the repository.
void	removeStatements(Resource subj, IRI pred, Value obj, Resource... contexts) Removes all statements matching the specified subject, predicate and object from the repository.
void	rollback() Rolls back the transaction, discarding any uncommitted changes that have been made in this SailConnection.
void	statementAdded(Statement statement) Notifies the listener that a statement has been added in a transaction that it has registered itself with.
void	statementRemoved(Statement statement) Notifies the listener that a statement has been removed in a transaction that it has registered itself with.

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

addConnectionListener, getWrappedConnection, removeConnectionListener

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

clear, clearNamespaces, endUpdate, evaluate, flush, getContextIDs, getNamespace, getNamespaces, isActive, isOpen, pendingRemovals, removeNamespace, setFederatedServiceResolver, setNamespace, size, size, startUpdate

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.SailConnection

addStatement, addStatement, clear, clearNamespaces, endUpdate, evaluate, flush, getContextIDs, getNamespace, getNamespaces, getStatements, isActive, isOpen, pendingRemovals, removeNamespace, removeStatement, removeStatements, setNamespace, size, startUpdate

Field Detail

sail

public final ShaclSail sail

stats

public ShaclSailConnection.Stats stats

Method Detail

getPreviousStateConnection

public NotifyingSailConnection getPreviousStateConnection()

getAddedStatements

public SailConnection getAddedStatements()

getRemovedStatements

public SailConnection getRemovedStatements()

begin

public void begin()
           throws SailException

Description copied from interface: SailConnection

Begins a transaction requiring SailConnection.commit() or SailConnection.rollback() to be called to close the transaction. The transaction will use the default IsolationLevel level for the SAIL, as returned by Sail.getDefaultIsolationLevel().

Specified by:

begin in interface SailConnection

Overrides:

begin in class SailConnectionWrapper

Throws:

SailException - If the connection could not start a transaction or if a transaction is already active on this connection.

begin

public void begin(IsolationLevel level)
           throws SailException

Description copied from interface: SailConnection

Begins a transaction with the specified IsolationLevel level, requiring SailConnection.commit() or SailConnection.rollback() to be called to close the transaction.

Specified by:

begin in interface SailConnection

Overrides:

begin in class SailConnectionWrapper

Parameters:

level - the transaction isolation level on which this transaction operates.

Throws:

UnknownSailTransactionStateException - If the IsolationLevel is not supported by this implementation

SailException - If the connection could not start a transaction, if the supplied transaction isolation level is not supported, or if a transaction is already active on this connection.

commit

public void commit()
            throws SailException

Description copied from interface: SailConnection

Commits any updates that have been performed since the last time SailConnection.commit() or SailConnection.rollback() was called.

Specified by:

commit in interface SailConnection

Overrides:

commit in class SailConnectionWrapper

Throws:

UnknownSailTransactionStateException - If the transaction state can not be determined (this can happen for instance when communication between client and server fails or times-out). It does not indicate a problem with the integrity of the store.

SailException - If the SailConnection could not be committed.

addStatement

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

Description copied from interface: SailConnection

Adds a statement to the store. Called when adding statements through a UpdateExpr operation.

Specified by:

addStatement in interface SailConnection

Overrides:

addStatement in class SailConnectionWrapper

Parameters:

modify - 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 modify,
                            Resource subj,
                            IRI pred,
                            Value obj,
                            Resource... contexts)
                     throws SailException

Description copied from interface: SailConnection

Removes all statements matching the specified subject, predicate and object from the repository. All three parameters may be null to indicate wildcards. Called when removing statements through a UpdateExpr operation.

Specified by:

removeStatement in interface SailConnection

Overrides:

removeStatement in class SailConnectionWrapper

Parameters:

modify - 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.

addStatement

public void addStatement(Resource subj,
                         IRI pred,
                         Value obj,
                         Resource... contexts)
                  throws SailException

Description copied from interface: SailConnection

Adds a statement to the store.

Specified by:

addStatement in interface SailConnection

Overrides:

addStatement in class SailConnectionWrapper

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 specified, a context-less statement will be added.

Throws:

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

removeStatements

public void removeStatements(Resource subj,
                             IRI pred,
                             Value obj,
                             Resource... contexts)
                      throws SailException

Description copied from interface: SailConnection

Removes all statements matching the specified subject, predicate and object from the repository. All three parameters may be null to indicate wildcards.

Specified by:

removeStatements in interface SailConnection

Overrides:

removeStatements in class SailConnectionWrapper

Parameters:

subj - The subject of the statement that should be removed, or null to indicate a wildcard.

pred - The predicate of the statement that should be removed, or null to indicate a wildcard.

obj - The object of the statement that should be removed , or null to indicate a wildcard. *

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.

rollback

public void rollback()
              throws SailException

Description copied from interface: SailConnection

Rolls back the transaction, discarding any uncommitted changes that have been made in this SailConnection.

Specified by:

rollback in interface SailConnection

Overrides:

rollback in class SailConnectionWrapper

Throws:

UnknownSailTransactionStateException - If the transaction state can not be determined (this can happen for instance when communication between client and server fails or times-out). It does not indicate a problem with the integrity of the store.

SailException - If the SailConnection could not be rolled back.

close

public void close()
           throws SailException

Description copied from interface: SailConnection

Closes the connection. Any updates that haven't been committed yet will be rolled back. The connection can no longer be used once it is closed.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface SailConnection

Overrides:

close in class SailConnectionWrapper

Throws:

SailException

prepare

public void prepare()
             throws SailException

Description copied from interface: SailConnection

Checks for an error state in the active transaction that would force the transaction to be rolled back. This is an optional call; calling or not calling this method should have no effect on the outcome of SailConnection.commit() or SailConnection.rollback(). A call to this method must be followed by (in the same thread) with a call to SailConnection.prepare() , SailConnection.commit(), SailConnection.rollback(), or SailConnection.close() . This method may be called multiple times within the same transaction by the same thread. If this method returns normally, the caller can reasonably expect that a subsequent call to SailConnection.commit() will also return normally. If this method returns with an exception the caller should treat the exception as if it came from a call to SailConnection.commit().

Specified by:

prepare in interface SailConnection

Overrides:

prepare in class SailConnectionWrapper

Throws:

UnknownSailTransactionStateException - If the transaction state can not be determined (this can happen for instance when communication between client and server fails or times-out). It does not indicate a problem with the integrity of the store.

SailException - If there is an active transaction and it cannot be committed.

statementAdded

public void statementAdded(Statement statement)

Description copied from interface: SailConnectionListener

Notifies the listener that a statement has been added in a transaction that it has registered itself with.

Specified by:

statementAdded in interface SailConnectionListener

Parameters:

statement - The statement that was added.

statementRemoved

public void statementRemoved(Statement statement)

Description copied from interface: SailConnectionListener

Notifies the listener that a statement has been removed in a transaction that it has registered itself with.

Specified by:

statementRemoved in interface SailConnectionListener

Parameters:

statement - The statement that was removed.

getCachedNodeFor

public PlanNode getCachedNodeFor(Select select)

getRdfsSubClassOfReasoner

public RdfsSubClassOfReasoner getRdfsSubClassOfReasoner()

getStatements

public CloseableIteration<? extends Statement,SailException> getStatements(Resource subj,
                                                                           IRI pred,
                                                                           Value obj,
                                                                           boolean includeInferred,
                                                                           Resource... contexts)
                                                                    throws SailException

Description copied from interface: SailConnection

Gets all statements from the specified contexts that have a specific subject, predicate and/or object. All three parameters may be null to indicate wildcards. The includeInferred parameter can be used to control which statements are fetched: all statements or only the statements that have been added explicitly.

Specified by:

getStatements in interface SailConnection

Overrides:

getStatements in class SailConnectionWrapper

Parameters:

subj - A Resource specifying the subject, or null for a wildcard.

pred - A URI specifying the predicate, or null for a wildcard.

obj - A Value specifying the object, or null for a wildcard.

includeInferred - if false, no inferred statements are returned; if true, inferred statements are returned if available

contexts - The context(s) to get the data from. 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.

Returns:

The statements matching the specified pattern.

Throws:

SailException - If the Sail object encountered an error or unexpected situation internally.

hasStatement

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

Description copied from interface: SailConnection

Determines if the store contains any statements from the specified contexts that have a specific subject, predicate and/or object. All three parameters may be null to indicate wildcards. The includeInferred parameter can be used to control which statements are checked: all statements or only the statements that have been added explicitly.

Specified by:

hasStatement in interface SailConnection

Parameters:

subj - A Resource specifying the subject, or null for a wildcard.

pred - An IRI specifying the predicate, or null for a wildcard.

obj - A Value specifying the object, or null for a wildcard.

includeInferred - if false, no inferred statements are returned; if true, inferred statements are returned if available

contexts - The context(s) to get the data from. 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.

Returns:

true iff the store contains any statements matching the supplied criteria, false otherwise.

Throws:

SailException - If the Sail object encountered an error or unexpected situation internally.