/** * File: DomainNarrower.java * Content: Utility class performing narrow operations for Domain middleware objects * Author: LuisM Pena * Date: 27th October 2001 * Version: 0.51.00 * Last change: * **/ package sensei.middleware.domains; /** * Utility class performing narrow operations for Domain middleware objects **/ public class DomainsNarrower { public final static boolean isObjectNotExistException(Exception ex) { return ex instanceof java.rmi.NoSuchObjectException; } public final static DomainGroupHandler toDomainGroupHandler(Object object) { return object instanceof DomainGroupHandler? (DomainGroupHandler) object : null; } public final static Checkpointable toCheckpointable(Object object) { return object instanceof Checkpointable? (Checkpointable) object : null; } public final static ExtendedCheckpointable toExtendedCheckpointable(Object object) { return object instanceof ExtendedCheckpointable? (ExtendedCheckpointable) object : null; } public final static StateHandler toStateHandler(Object object) { return object instanceof StateHandler? (StateHandler) object : null; } public final static BasicStateHandler toBasicStateHandler(Object object) { return object instanceof BasicStateHandler? (BasicStateHandler) object : null; } };