Package cz.cvut.kbss.ontodriver

Interface Wrapper

All Known Subinterfaces:

Connection, Rdf4jConnectionProvider, RepoConnection, StorageConnector

All Known Implementing Classes:

ChangeTrackingStorageConnector, GraphDBStorageConnection, JenaAdapter, JenaConnection, OwlapiConnection, Rdf4jAdapter, Rdf4jConnection, RemoteRepositoryWrapper, SharedStorageConnector, SnapshotStorageConnector, StorageConnection, StorageConnector, VirtuosoStorageConnector

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface Wrapper

Interface for retrieving concrete implementations of the OntoDriver API and/or classes the implementations use (e.g. classes of the underlying storage framework).

Method Summary

Modifier and Type	Method	Description
<T> T	unwrap(Class<T> cls)	Returns an object that implements the given interface to allow access to non-standard methods, or standard methods not exposed by the proxy.

Method Details

unwrap

<T> T unwrap(Class<T> cls)
      throws OntoDriverException

Returns an object that implements the given interface to allow access to non-standard methods, or standard methods not exposed by the proxy. If the receiver implements the interface then the result is the receiver or a proxy for the receiver. If the receiver is a wrapper and the wrapped object implements the interface then the result is the wrapped object or a proxy for the wrapped object. Otherwise return the the result of calling unwrap recursively on the wrapped object or a proxy for that result. If the receiver is not a wrapper and does not implement the interface, then an OntoDriverException is thrown.

Type Parameters:

T - The type of the class modeled by this Class object

Parameters:

cls - The type of the required result

Returns:

An object implementing the interface

Throws:

OntoDriverException - If no matching object is found