Package cz.cvut.kbss.ontodriver.rdf4j.container

Class ContainerHandler

java.lang.Object

cz.cvut.kbss.ontodriver.rdf4j.container.ContainerHandler

public class ContainerHandler
extends Object

Handles RDF container access operations.

Constructor Summary

Constructors

Constructor	Description
ContainerHandler(RepoConnection connector, org.eclipse.rdf4j.model.ValueFactory vf)

Method Summary

Modifier and Type	Method	Description
List<Axiom<?>>	loadContainer(ContainerDescriptor descriptor)	Loads the content of a container corresponding to the specified description.
<T> void	persistContainer(ContainerValueDescriptor<T> descriptor)	Creates a new container and fills it with the specified values.
<T> void	updateContainer(ContainerValueDescriptor<T> descriptor)	Updates the content of an existing container corresponding to the specified descriptor.

Methods inherited from class java.lang.Object

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

Constructor Details

ContainerHandler

public ContainerHandler(RepoConnection connector,
 org.eclipse.rdf4j.model.ValueFactory vf)

Method Details

loadContainer

public List<Axiom<?>> loadContainer(ContainerDescriptor descriptor)
                             throws Rdf4jDriverException

Loads the content of a container corresponding to the specified description.

The container values are returned as a list of axioms where the owner of the container points to the individual values.

Parameters:

descriptor - Container description

Returns:

List of axioms representing the container's content

Throws:

Rdf4jDriverException - If an error accessing the container occurs

persistContainer

public <T> void persistContainer(ContainerValueDescriptor<T> descriptor)
                          throws Rdf4jDriverException

Creates a new container and fills it with the specified values.

Type Parameters:

T - Type of container values

Parameters:

descriptor - Container value descriptor

Throws:

Rdf4jDriverException - If an error accessing the container occurs

updateContainer

public <T> void updateContainer(ContainerValueDescriptor<T> descriptor)
                         throws Rdf4jDriverException

Updates the content of an existing container corresponding to the specified descriptor.

If the descriptor has no value, the container is removed completely.

Type Parameters:

T - Value type

Parameters:

descriptor - Descriptor with new container values

Throws:

Rdf4jDriverException - If an error accessing the container occurs