/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
*/
package org.hibernate.service.spi;
/**
* Optional contract for services that wrap stuff that to which it is useful to have access. For example, a service
* that maintains a {@link javax.sql.DataSource} might want to expose access to the {@link javax.sql.DataSource} or
* its {@link java.sql.Connection} instances.
*
* @author Steve Ebersole
*/
public interface Wrapped {
/**
* Can this wrapped service be unwrapped as the indicated type?
*
* @param unwrapType The type to check.
*
* @return True/false.
*/
public boolean isUnwrappableAs(Class unwrapType);
/**
* Unproxy the service proxy
*
* @param unwrapType The java type as which to unwrap this instance.
*
* @return The unwrapped reference
*
* @throws UnknownUnwrapTypeException if the servicebe unwrapped as the indicated type
*/
public <T> T unwrap(Class<T> unwrapType);
}