001/* DelegateOperations.java -- 002 Copyright (C) 2005, 2006 Free Software Foundation, Inc. 003 004This file is part of GNU Classpath. 005 006GNU Classpath is free software; you can redistribute it and/or modify 007it under the terms of the GNU General Public License as published by 008the Free Software Foundation; either version 2, or (at your option) 009any later version. 010 011GNU Classpath is distributed in the hope that it will be useful, but 012WITHOUT ANY WARRANTY; without even the implied warranty of 013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014General Public License for more details. 015 016You should have received a copy of the GNU General Public License 017along with GNU Classpath; see the file COPYING. If not, write to the 018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 01902110-1301 USA. 020 021Linking this library statically or dynamically with other modules is 022making a combined work based on this library. Thus, the terms and 023conditions of the GNU General Public License cover the whole 024combination. 025 026As a special exception, the copyright holders of this library give you 027permission to link this library with independent modules to produce an 028executable, regardless of the license terms of these independent 029modules, and to copy and distribute the resulting executable under 030terms of your choice, provided that you also meet, for each linked 031independent module, the terms and conditions of the license of that 032module. An independent module is a module which is not derived from 033or based on this library. If you modify this library, you may extend 034this exception to your version of the library, but you are not 035obligated to do so. If you do not wish to do so, delete this 036exception statement from your version. */ 037 038 039package org.omg.PortableServer.portable; 040 041import org.omg.CORBA.ORB; 042import org.omg.PortableServer.POA; 043import org.omg.PortableServer.Servant; 044 045/** 046 * Each {@link Servant} has an associated delegate, where the most of the calls 047 * are forwarded. The delegate is responsible for providing the actual 048 * functionality. This class is required to supports a conceptions of 049 * the CORBA 2.3.1 Servant. 050 * 051 * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) 052 */ 053public interface Delegate 054{ 055 /** 056 * Returns the root POA of the ORB instance, associated with this servant. 057 * It is the same POA that would be returned by resolving the initial 058 * reference "RootPOA" for that orb. The default {@link Servant#_default_POA()} 059 * method forwards call to the delegate can be overridden to 060 * obtain the alternative default POA. 061 * 062 * @see ORB#resolve_initial_references 063 */ 064 POA default_POA(Servant a_servant); 065 066 /** 067 * Get the interface repository defintion 068 * <code>InterfaceDef</code> for this Object. 069 */ 070 org.omg.CORBA.Object get_interface_def(Servant a_servant); 071 072 /** 073 * Checks if the passed servant is an instance of the given CORBA IDL type. 074 * 075 * @param a_servant a servant to check. 076 * @param an_id a repository ID, representing an IDL type for that the 077 * servant must be checked. 078 * 079 * @return true if the servant is an instance of the given type, false 080 * otherwise. 081 */ 082 boolean is_a(Servant a_servant, String an_id); 083 084 /** 085 * Determines if the server object for this reference has already 086 * been destroyed. 087 * 088 * @return true if the object has been destroyed, false otherwise. 089 */ 090 boolean non_existent(Servant a_servant); 091 092 /** 093 * Return the invocation target object identifier as a byte array. 094 */ 095 byte[] object_id(Servant a_servant); 096 097 /** 098 * Returns the ORB that is directly associated with the given servant. 099 */ 100 ORB orb(Servant a_servant); 101 102 /** 103 * Get POA that is directly associated with the given servant. 104 */ 105 POA poa(Servant a_servant); 106 107 /** 108 * Obtains the CORBA object reference that is an invocation target for the 109 * given servant. 110 */ 111 org.omg.CORBA.Object this_object(Servant a_servant); 112}