1 /*
   2  * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.corba.se.spi.oa ;
  27 
  28 import org.omg.CORBA.SystemException ;
  29 
  30 /** NullServant is used to represent a null servant returned
  31  * OAInvocationInfo after a
  32  * ObjectAdapter.getInvocationServant( OAInvocationInfo ) call.
  33  * If the getInvocationServant call could not locate a servant
  34  * for the ObjectId in the OAInvocationInfo, getServantContainer
  35  * will contain a NullServant.  Later stages of the request
  36  * dispatch may choose either to throw the exception or perform
  37  * some other action in response to the NullServant result.
  38  */
  39 public interface NullServant
  40 {
  41     /** Obtain the exception that is associated with this
  42      * NullServant instance.
  43      */
  44     SystemException getException() ;
  45 }