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1: /* PolicyHelper.java -- 2: Copyright (C) 2005 Free Software Foundation, Inc. 3: 4: This file is part of GNU Classpath. 5: 6: GNU Classpath is free software; you can redistribute it and/or modify 7: it under the terms of the GNU General Public License as published by 8: the Free Software Foundation; either version 2, or (at your option) 9: any later version. 10: 11: GNU Classpath is distributed in the hope that it will be useful, but 12: WITHOUT ANY WARRANTY; without even the implied warranty of 13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14: General Public License for more details. 15: 16: You should have received a copy of the GNU General Public License 17: along with GNU Classpath; see the file COPYING. If not, write to the 18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19: 02110-1301 USA. 20: 21: Linking this library statically or dynamically with other modules is 22: making a combined work based on this library. Thus, the terms and 23: conditions of the GNU General Public License cover the whole 24: combination. 25: 26: As a special exception, the copyright holders of this library give you 27: permission to link this library with independent modules to produce an 28: executable, regardless of the license terms of these independent 29: modules, and to copy and distribute the resulting executable under 30: terms of your choice, provided that you also meet, for each linked 31: independent module, the terms and conditions of the license of that 32: module. An independent module is a module which is not derived from 33: or based on this library. If you modify this library, you may extend 34: this exception to your version of the library, but you are not 35: obligated to do so. If you do not wish to do so, delete this 36: exception statement from your version. */ 37: 38: 39: package org.omg.CORBA; 40: 41: import gnu.CORBA.Minor; 42: import gnu.CORBA.OrbRestricted; 43: 44: import org.omg.CORBA.Any; 45: import org.omg.CORBA.BAD_OPERATION; 46: import org.omg.CORBA.ORB; 47: import org.omg.CORBA.StructMember; 48: import org.omg.CORBA.TCKind; 49: import org.omg.CORBA.TypeCode; 50: import org.omg.CORBA.portable.Delegate; 51: import org.omg.CORBA.portable.InputStream; 52: import org.omg.CORBA.portable.ObjectImpl; 53: import org.omg.CORBA.portable.OutputStream; 54: 55: /** 56: * The helper operations for the 57: * CORBA object {@link Policy}. 58: * 59: * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) 60: */ 61: public abstract class PolicyHelper 62: { 63: /** 64: * Get the type code of the {@link Policy}. 65: * 66: * @return interface typecode, named "Policy". 67: */ 68: public static TypeCode type() 69: { 70: return OrbRestricted.Singleton.create_interface_tc(id(), "Policy"); 71: } 72: 73: /** 74: * Insert the Policy into the given Any. 75: * 76: * @param any the Any to insert into. 77: * @param that the Policy to insert. 78: */ 79: public static void insert(Any any, Policy that) 80: { 81: any.insert_Streamable(new PolicyHolder(that)); 82: } 83: 84: /** 85: * Extract the Policy from given Any. 86: * 87: * @throws BAD_OPERATION if the passed Any does not contain Policy. 88: */ 89: public static Policy extract(Any any) 90: { 91: try 92: { 93: PolicyHolder h = (PolicyHolder) any.extract_Streamable(); 94: return h.value; 95: } 96: catch (ClassCastException ex) 97: { 98: BAD_OPERATION bad = new BAD_OPERATION("Policy expected"); 99: bad.minor = Minor.Any; 100: throw bad; 101: } 102: } 103: 104: /** 105: * Get the Policy repository id. 106: * 107: * @return "IDL:omg.org/CORBA/Policy:1.0", always. 108: */ 109: public static String id() 110: { 111: return "IDL:omg.org/CORBA/Policy:1.0"; 112: } 113: 114: /** 115: * Cast the passed object into the Policy. If the 116: * object has a different java type, create an instance 117: * of the _PolicyStub, using the same delegate, as for 118: * the passed parameter. Hence, unlike java type cast, 119: * this method may return a different object, than has been passed. 120: * 121: * @param obj the object to narrow. 122: * @return narrowed instance. 123: * @throws BAD_PARAM if the passed object is not a Policy. 124: */ 125: public static Policy narrow(org.omg.CORBA.Object obj) 126: { 127: if (obj == null) 128: return null; 129: else if (obj instanceof Policy) 130: return (Policy) obj; 131: else 132: { 133: // Check for the policy id cannot be performed because 134: // this helper must read various subclasses of the Policy, 135: // and the IOR profile currently supports only one id. 136: 137: Delegate delegate = ((ObjectImpl) obj)._get_delegate(); 138: return new _PolicyStub(delegate); 139: } 140: } 141: 142: /** 143: * Read the object from the CDR intput stream (IOR profile expected). 144: * 145: * @param input a org.omg.CORBA.portable stream to read from. 146: */ 147: public static Policy read(InputStream input) 148: { 149: return narrow(input.read_Object()); 150: } 151: 152: /** 153: * Write the object to the CDR output stream (as IOR profile). 154: * 155: * @param output a org.omg.CORBA.portable stream stream to write into. 156: * @param value a value to write. 157: */ 158: public static void write(OutputStream output, Policy value) 159: { 160: output.write_Object(value); 161: }