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package org.apache.tuscany.sca.osgi.remoteserviceadmin;
import org.osgi.framework.ServiceReference;
/**
* An Export Registration associates a service to a local endpoint.
*
* The Export Registration can be used to delete the endpoint associated with an
* this registration. It is created with the
* {@link RemoteServiceAdmin#exportService(ServiceReference,java.util.Map)} method.
*
* When this Export Registration has been unregistered, the methods must all
* return <code>null</code>.
*
* @ThreadSafe
*/
public interface ExportRegistration {
/**
* Return the service being exported.
*
* @return The service being exported, must be <code>null</code> when this
* registration is unregistered.
* @throws IllegalStateException Thrown when this object was not properly initialized, see {@link #getException()}
*/
ServiceReference getExportedService() throws IllegalStateException;
/**
* Return the Endpoint Description that is created for this registration.
*
* @return the local Endpoint Description
* @throws IllegalStateException Thrown when this object was not properly initialized, see {@link #getException()}
*/
EndpointDescription getEndpointDescription();
/**
* Delete the local endpoint and disconnect any remote distribution
* providers. After this method returns, all the methods must return
* <code>null</code>.
*
* This method has no effect when the endpoint is already destroyed or being
* destroyed.
*/
void close();
/**
* Exception for any error during the import process.
*
* If the Remote Admin for some reasons is unable to create a registration,
* then it must return a <code>Throwable</code> from this method. In this
* case, all other methods must return on this interface must throw an
* Illegal State Exception. If no error occurred, this method must return
* <code>null</code>.
*
* The error must be set before this Import Registration is returned.
* Asynchronously occurring errors must be reported to the log.
*
* @return The exception that occurred during the creation of the
* registration or <code>null</code> if no exception occurred.
*/
Throwable getException();
}
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