org.eclipse.rdf4j.sail.shacl

Class VerySimpleRdfsBackwardsChainingConnection

java.lang.Object

org.eclipse.rdf4j.sail.helpers.SailConnectionWrapper

org.eclipse.rdf4j.sail.shacl.VerySimpleRdfsBackwardsChainingConnection

All Implemented Interfaces:

AutoCloseable, FederatedServiceResolverClient, SailConnection

@Experimental
 @InternalUseOnly
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.

Method Summary

Modifier and Type	Method and Description
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.

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

addStatement, addStatement, begin, begin, clear, clearNamespaces, close, commit, endUpdate, evaluate, explain, flush, getContextIDs, getNamespace, getNamespaces, getWrappedConnection, isActive, isOpen, pendingRemovals, prepare, prepareQuery, removeNamespace, removeStatement, removeStatements, rollback, setFederatedServiceResolver, setNamespace, setTransactionSettings, 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, getStatements, removeStatement, removeStatements

Method Detail

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,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.