001 /* DelegateOperations.java -- 002 Copyright (C) 2005, 2006 Free Software Foundation, Inc. 003 004 This file is part of GNU Classpath. 005 006 GNU Classpath is free software; you can redistribute it and/or modify 007 it under the terms of the GNU General Public License as published by 008 the Free Software Foundation; either version 2, or (at your option) 009 any later version. 010 011 GNU Classpath is distributed in the hope that it will be useful, but 012 WITHOUT ANY WARRANTY; without even the implied warranty of 013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014 General Public License for more details. 015 016 You should have received a copy of the GNU General Public License 017 along with GNU Classpath; see the file COPYING. If not, write to the 018 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 019 02110-1301 USA. 020 021 Linking this library statically or dynamically with other modules is 022 making a combined work based on this library. Thus, the terms and 023 conditions of the GNU General Public License cover the whole 024 combination. 025 026 As a special exception, the copyright holders of this library give you 027 permission to link this library with independent modules to produce an 028 executable, regardless of the license terms of these independent 029 modules, and to copy and distribute the resulting executable under 030 terms of your choice, provided that you also meet, for each linked 031 independent module, the terms and conditions of the license of that 032 module. An independent module is a module which is not derived from 033 or based on this library. If you modify this library, you may extend 034 this exception to your version of the library, but you are not 035 obligated to do so. If you do not wish to do so, delete this 036 exception statement from your version. */ 037 038 039 package org.omg.PortableServer.portable; 040 041 import org.omg.CORBA.ORB; 042 import org.omg.PortableServer.POA; 043 import 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 */ 053 public 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 }