Class VerySimpleRdfsBackwardsChainingConnection

java.lang.Object

org.eclipse.rdf4j.sail.helpers.SailConnectionWrapper

org.eclipse.rdf4j.sail.shacl.wrapper.data.VerySimpleRdfsBackwardsChainingConnection

All Implemented Interfaces:

AutoCloseable, FederatedServiceResolverClient, ThreadSafetyAware, SailConnection

public class VerySimpleRdfsBackwardsChainingConnection
extends SailConnectionWrapper

Very simple RDFS backwardschaining connection that supports type inference on hasStatement and getStatement. It does not support inference for SPARQL queries.

Constructor Summary

Constructors

Constructor	Description
VerySimpleRdfsBackwardsChainingConnection(SailConnection wrappedCon, RdfsSubClassOfReasoner rdfsSubClassOfReasoner)
VerySimpleRdfsBackwardsChainingConnection(SailConnection wrappedCon, RdfsSubClassOfReasoner rdfsSubClassOfReasoner, boolean includeInferredStatements)

Method Summary

Modifier and Type	Method	Description
CloseableIteration<? extends Statement>	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.

Methods inherited from class SailConnectionWrapper

addStatement, addStatement, begin, begin, clear, clearNamespaces, close, commit, endUpdate, evaluate, explain, flush, getComparator, getContextIDs, getFederatedServiceResolver, getNamespace, getNamespaces, getStatements, getSupportedOrders, getWrappedConnection, isActive, isOpen, prepare, prepareQuery, removeNamespace, removeStatement, removeStatements, rollback, setFederatedServiceResolver, setNamespace, setTransactionSettings, size, size, startUpdate, supportsConcurrentReads

Modifier and Type	Method	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	clear(Resource... contexts)	Removes all statements from the specified/all contexts.
void	clearNamespaces()	Removes all namespace declarations from the repository.
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.
void	endUpdate(UpdateContext modify)	Indicates that the given op will not be used in any call again.
CloseableIteration<? extends BindingSet>	evaluate(TupleExpr tupleExpr, Dataset dataset, BindingSet bindings, boolean includeInferred)	Evaluates the supplied TupleExpr on the data contained in this Sail object, using the (optional) dataset and supplied bindings as input parameters.
Explanation	explain(Explanation.Level level, TupleExpr tupleExpr, Dataset dataset, BindingSet bindings, boolean includeInferred, int timeoutSeconds)	Explain how the TupleExpr will be (or has been) executed/evaluated by returning a TupleExpr (which may or may not be the provided TupleExpr) that has gone through zero or more of the stages prior to and also including execution as specified by the provided level.
void	flush()	Flushes any pending updates and notify changes to listeners as appropriate.
Comparator<Value>	getComparator()	Different underlying datastructures may have different ways of ordering statements.
CloseableIteration<? extends Resource>	getContextIDs()	Returns the set of all unique context identifiers that are used to store statements.
FederatedServiceResolver	getFederatedServiceResolver()	Gets the FederatedServiceResolver used by this client.
String	getNamespace(String prefix)	Gets the namespace that is associated with the specified prefix, if any.
CloseableIteration<? extends Namespace>	getNamespaces()	Gets the namespaces relevant to the data contained in this Sail object.
CloseableIteration<? extends Statement>	getStatements(StatementOrder statementOrder, 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.
Set<StatementOrder>	getSupportedOrders(Resource subj, IRI pred, Value obj, Resource... contexts)	The underlying store may support some, but not all, statement orders based on the statement pattern.
SailConnection	getWrappedConnection()	Gets the connection that is wrapped by this object.
boolean	isActive()	Indicates if a transaction is currently active on the connection.
boolean	isOpen()	Checks whether this SailConnection is open.
void	prepare()	Checks for an error state in the active transaction that would force the transaction to be rolled back.
Optional<TupleExpr>	prepareQuery(QueryLanguage ql, Query.QueryType type, String query, String baseURI)	Allows the SailConnection to bypass the standard query parser and provide its own internal TupleExpr implementation.
void	removeNamespace(String prefix)	Removes a namespace declaration by removing the association between a prefix and a namespace name.
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	setFederatedServiceResolver(FederatedServiceResolver resolver)	Sets the FederatedServiceResolver to use for this client.
void	setNamespace(String prefix, String name)	Sets the prefix for a namespace.
void	setTransactionSettings(TransactionSetting... settings)	Pass any transaction-specific settings to the SailConnection.
long	size(Resource context)
long	size(Resource... contexts)	Returns the number of (explicit) statements in the store, or in specific contexts.
void	startUpdate(UpdateContext modify)	Signals the start of an update operation.
boolean	supportsConcurrentReads()	A class may support concurrent reads from multiple threads against the same object.

Methods inherited from class Object

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

Constructor Details

VerySimpleRdfsBackwardsChainingConnection

public VerySimpleRdfsBackwardsChainingConnection(SailConnection wrappedCon,
 RdfsSubClassOfReasoner rdfsSubClassOfReasoner)

VerySimpleRdfsBackwardsChainingConnection

public VerySimpleRdfsBackwardsChainingConnection(SailConnection wrappedCon,
 RdfsSubClassOfReasoner rdfsSubClassOfReasoner,
 boolean includeInferredStatements)

Method Details

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

Overrides:

hasStatement in class SailConnectionWrapper

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.

getStatements

public CloseableIteration<? extends Statement> 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.