001/* PolicyHelper.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.CORBA; 040 041import gnu.CORBA.Minor; 042import gnu.CORBA.OrbRestricted; 043 044import org.omg.CORBA.Any; 045import org.omg.CORBA.BAD_OPERATION; 046import org.omg.CORBA.TypeCode; 047import org.omg.CORBA.portable.Delegate; 048import org.omg.CORBA.portable.InputStream; 049import org.omg.CORBA.portable.ObjectImpl; 050import org.omg.CORBA.portable.OutputStream; 051 052/** 053* The helper operations for the 054* CORBA object {@link Policy}. 055* 056* @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) 057*/ 058public abstract class PolicyHelper 059{ 060 /** 061 * Get the type code of the {@link Policy}. 062 * 063 * @return interface typecode, named "Policy". 064 */ 065 public static TypeCode type() 066 { 067 return OrbRestricted.Singleton.create_interface_tc(id(), "Policy"); 068 } 069 070 /** 071 * Insert the Policy into the given Any. 072 * 073 * @param any the Any to insert into. 074 * @param that the Policy to insert. 075 */ 076 public static void insert(Any any, Policy that) 077 { 078 any.insert_Streamable(new PolicyHolder(that)); 079 } 080 081 /** 082 * Extract the Policy from given Any. 083 * 084 * @throws BAD_OPERATION if the passed Any does not contain Policy. 085 */ 086 public static Policy extract(Any any) 087 { 088 try 089 { 090 PolicyHolder h = (PolicyHolder) any.extract_Streamable(); 091 return h.value; 092 } 093 catch (ClassCastException ex) 094 { 095 BAD_OPERATION bad = new BAD_OPERATION("Policy expected"); 096 bad.minor = Minor.Any; 097 throw bad; 098 } 099 } 100 101 /** 102 * Get the Policy repository id. 103 * 104 * @return "IDL:omg.org/CORBA/Policy:1.0", always. 105 */ 106 public static String id() 107 { 108 return "IDL:omg.org/CORBA/Policy:1.0"; 109 } 110 111 /** 112 * Cast the passed object into the Policy. If the 113 * object has a different java type, create an instance 114 * of the _PolicyStub, using the same delegate, as for 115 * the passed parameter. Hence, unlike java type cast, 116 * this method may return a different object, than has been passed. 117 * 118 * @param obj the object to narrow. 119 * @return narrowed instance. 120 * @throws BAD_PARAM if the passed object is not a Policy. 121 */ 122 public static Policy narrow(org.omg.CORBA.Object obj) 123 { 124 if (obj == null) 125 return null; 126 else if (obj instanceof Policy) 127 return (Policy) obj; 128 else 129 { 130 // Check for the policy id cannot be performed because 131 // this helper must read various subclasses of the Policy, 132 // and the IOR profile currently supports only one id. 133 134 Delegate delegate = ((ObjectImpl) obj)._get_delegate(); 135 return new _PolicyStub(delegate); 136 } 137 } 138 139 /** 140 * Read the object from the CDR intput stream (IOR profile expected). 141 * 142 * @param input a org.omg.CORBA.portable stream to read from. 143 */ 144 public static Policy read(InputStream input) 145 { 146 return narrow(input.read_Object()); 147 } 148 149 /** 150 * Write the object to the CDR output stream (as IOR profile). 151 * 152 * @param output a org.omg.CORBA.portable stream stream to write into. 153 * @param value a value to write. 154 */ 155 public static void write(OutputStream output, Policy value) 156 { 157 output.write_Object(value); 158 } 159}