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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 org.omg.CORBA.Any; 42: import org.omg.CORBA.BAD_OPERATION; 43: import org.omg.CORBA.ORB; 44: import org.omg.CORBA.StructMember; 45: import org.omg.CORBA.TCKind; 46: import org.omg.CORBA.TypeCode; 47: import org.omg.CORBA.portable.Delegate; 48: import org.omg.CORBA.portable.InputStream; 49: import org.omg.CORBA.portable.ObjectImpl; 50: import org.omg.CORBA.portable.OutputStream; 51: 52: /** 53: * The helper operations for the 54: * CORBA object {@link Policy}. 55: * 56: * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) 57: */ 58: public abstract class PolicyHelper 59: { 60: /** 61: * The cached {@link Policy} typecode, computed once. 62: */ 63: private static TypeCode typeCode; 64: 65: /** 66: * Get the type code of the {@link Policy}. 67: * 68: * @return interface typecode, named "Policy". 69: */ 70: public static TypeCode type() 71: { 72: if (typeCode == null) 73: typeCode = ORB.init().create_interface_tc(id(), "Policy"); 74: return typeCode; 75: } 76: 77: /** 78: * Insert the Policy into the given Any. 79: * 80: * @param any the Any to insert into. 81: * @param that the Policy to insert. 82: */ 83: public static void insert(Any any, Policy that) 84: { 85: any.insert_Streamable(new PolicyHolder(that)); 86: } 87: 88: /** 89: * Extract the Policy from given Any. 90: * 91: * @throws BAD_OPERATION if the passed Any does not contain Policy. 92: */ 93: public static Policy extract(Any any) 94: { 95: try 96: { 97: PolicyHolder h = (PolicyHolder) any.extract_Streamable(); 98: return h.value; 99: } 100: catch (ClassCastException ex) 101: { 102: throw new BAD_OPERATION("Policy expected"); 103: } 104: } 105: 106: /** 107: * Get the Policy repository id. 108: * 109: * @return "IDL:omg.org/CORBA/Policy:1.0", always. 110: */ 111: public static String id() 112: { 113: return "IDL:omg.org/CORBA/Policy:1.0"; 114: } 115: 116: /** 117: * Cast the passed object into the Policy. If the 118: * object has a different java type, create an instance 119: * of the _PolicyStub, using the same delegate, as for 120: * the passed parameter. Hence, unlike java type cast, 121: * this method may return a different object, than has been passed. 122: * 123: * @param obj the object to narrow. 124: * @return narrowed instance. 125: * @throws BAD_PARAM if the passed object is not a Policy. 126: */ 127: public static Policy narrow(org.omg.CORBA.Object obj) 128: { 129: if (obj == null) 130: return null; 131: else if (obj instanceof Policy) 132: return (Policy) obj; 133: else 134: { 135: // Check for the policy id cannot be performed because 136: // this helper must read various subclasses of the Policy, 137: // and the IOR profile currently supports only one id. 138: 139: Delegate delegate = ((ObjectImpl) obj)._get_delegate(); 140: return new _PolicyStub(delegate); 141: } 142: } 143: 144: /** 145: * Read the object from the CDR intput stream (IOR profile expected). 146: * 147: * @param input a org.omg.CORBA.portable stream to read from. 148: */ 149: public static Policy read(InputStream input) 150: { 151: return narrow(input.read_Object()); 152: } 153: 154: /** 155: * Write the object to the CDR output stream (as IOR profile). 156: * 157: * @param output a org.omg.CORBA.portable stream stream to write into. 158: * @param value a value to write. 159: */ 160: public static void write(OutputStream output, Policy value) 161: { 162: output.write_Object(value); 163: }
GNU Classpath (0.18) |