Class DirectTypeHierarchyInferencer

java.lang.Object

org.eclipse.rdf4j.sail.helpers.SailWrapper

org.eclipse.rdf4j.sail.helpers.NotifyingSailWrapper

org.eclipse.rdf4j.sail.inferencer.fc.DirectTypeHierarchyInferencer

All Implemented Interfaces:

FederatedServiceResolverClient, NotifyingSail, Sail, StackableSail

public class DirectTypeHierarchyInferencer
extends NotifyingSailWrapper

A forward-chaining inferencer that infers the direct-type hierarchy relations sesame:directSubClassOf, sesame:directSubPropertyOf and sesame:directType.

The semantics of this inferencer are defined as follows:

   Class A is a direct subclass of B iff:
      1. A is a subclass of B and;
      2. A and B are not equa and;
      3. there is no class C (unequal A and B) such that
         A is a subclass of C and C of B.

   Property P is a direct subproperty of Q iff:
      1. P is a subproperty of Q and;
      2. P and Q are not equal and;
      3. there is no property R (unequal P and Q) such that
         P is a subproperty of R and R of Q.

   Resource I is of direct type T iff:
      1. I is of type T and
      2. There is no class U (unequal T) such that:
          a. U is a subclass of T and;
          b. I is of type U.

Constructor Summary

Constructors

Constructor	Description
DirectTypeHierarchyInferencer()
DirectTypeHierarchyInferencer(NotifyingSail baseSail)

Method Summary

Modifier and Type	Method	Description
InferencerConnection	getConnection()	Opens a connection on the Sail which can be used to query and update data.
void	init()	Initializes the Sail.

Methods inherited from class NotifyingSailWrapper

addSailChangedListener, getBaseSail, removeSailChangedListener, setBaseSail

Modifier and Type	Method	Description
void	addSailChangedListener(SailChangedListener listener)	Adds the specified SailChangedListener to receive events when the data in this Sail object changes.
NotifyingSail	getBaseSail()	Gets the base Sail that this Sail works on top of.
void	removeSailChangedListener(SailChangedListener listener)	Removes the specified SailChangedListener so that it no longer receives events from this Sail object.
void	setBaseSail(Sail baseSail)	Sets the base Sail that this Sail will work on top of.

Methods inherited from class SailWrapper

getCollectionFactory, getDataDir, getDefaultIsolationLevel, getFederatedServiceResolver, getSupportedIsolationLevels, getValueFactory, isWritable, setDataDir, setFederatedServiceResolver, shutDown, verifyBaseSailSet

Modifier and Type	Method	Description
Supplier<CollectionFactory>	getCollectionFactory()	Gets a CollectionFactory that may be optimized for this store and may or may not use disk or other resources.
File	getDataDir()	Gets the Sail's data directory.
IsolationLevel	getDefaultIsolationLevel()	Retrieves the default IsolationLevel level on which transactions in this Sail operate.
FederatedServiceResolver	getFederatedServiceResolver()	Gets the FederatedServiceResolver used by this client.
List<IsolationLevel>	getSupportedIsolationLevels()	Retrieve the IsolationLevels supported by this SAIL, ordered by increasing complexity.
ValueFactory	getValueFactory()	Gets a ValueFactory object that can be used to create IRI-, blank node-, literal- and statement objects.
boolean	isWritable()	Checks whether this Sail object is writable, i.e. if the data contained in this Sail object can be changed.
void	setDataDir(File dataDir)	Sets the data directory for the Sail.
void	setFederatedServiceResolver(FederatedServiceResolver resolver)	Sets the FederatedServiceResolver to use for this client.
void	shutDown()	Shuts down the Sail, giving it the opportunity to synchronize any stale data.
protected void	verifyBaseSailSet()

Methods inherited from class Object

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

Constructor Details

DirectTypeHierarchyInferencer

public DirectTypeHierarchyInferencer()

DirectTypeHierarchyInferencer

public DirectTypeHierarchyInferencer(NotifyingSail baseSail)

Method Details

getConnection

public InferencerConnection getConnection()
                                   throws SailException

Description copied from interface: Sail

Opens a connection on the Sail which can be used to query and update data. Depending on how the implementation handles concurrent access, a call to this method might block when there is another open connection on this Sail.

Specified by:

getConnection in interface NotifyingSail

Specified by:

getConnection in interface Sail

Overrides:

getConnection in class NotifyingSailWrapper

Throws:

SailException - If no transaction could be started, for example because the Sail is not writable.

init

public void init()
          throws SailException

Description copied from interface: Sail

Initializes the Sail. Care should be taken that required initialization parameters have been set before this method is called. Please consult the specific Sail implementation for information about the relevant parameters.

Specified by:

init in interface Sail

Overrides:

init in class SailWrapper

Throws:

SailException - If the Sail could not be initialized.