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1: /* WStringValueHelper.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.portable.BoxedValueHelper; 45: import org.omg.CORBA.portable.InputStream; 46: import org.omg.CORBA.portable.OutputStream; 47: 48: import java.io.Serializable; 49: 50: /** 51: * Provides helper operations for the Wide String value type, treating a 52: * Wide String as a CORBA value type rather than as a primitive type. The OMG 53: * specification states this may be convenient in some specific 54: * cases. The typecode is different, but the reading/writing format in 55: * this implementation is the same as for the ordinary wide string. This is 56: * that Sun's IDL compiler (v1.4) would generate. 57: * 58: * @author Audrius Meskauskas (AudriusA@Bioinformatics.org) 59: */ 60: public class WStringValueHelper 61: implements BoxedValueHelper 62: { 63: /** 64: * The Wide String value helper repository Id. 65: */ 66: private static final String id = "IDL:omg.org/CORBA/WStringValue:1.0"; 67: 68: /** 69: * The Wide String typecode. 70: */ 71: private static final TypeCode twString = 72: OrbRestricted.Singleton.create_wstring_tc(0); 73: 74: /** 75: * Returns the String Value repository Id. 76: * @return "IDL:omg.org/CORBA/WStringValue:1.0", always. 77: */ 78: public String get_id() 79: { 80: return id; 81: } 82: 83: /** 84: * Returns the String Value repository Id. 85: * @return "IDL:omg.org/CORBA/WStringValue:1.0", always. 86: */ 87: public static String id() 88: { 89: return id; 90: } 91: 92: /** 93: * Read the wide string value from the input stream. 94: * 95: * @param istream a stream to read from. 96: * 97: * @return a string (delegates to read_wstring()). 98: */ 99: public Serializable read_value(InputStream istream) 100: { 101: return istream.read_wstring(); 102: } 103: 104: /** 105: * Write the given wide string value into the output stream. 106: * 107: * @param ostream a stream to write into. 108: * @param a_string a string to write. 109: */ 110: public void write_value(OutputStream ostream, Serializable a_string) 111: { 112: try 113: { 114: ostream.write_wstring((String) a_string); 115: } 116: catch (ClassCastException ex) 117: { 118: MARSHAL m = new MARSHAL("String expected"); 119: m.minor = Minor.ClassCast; 120: throw m; 121: } 122: } 123: 124: /** 125: * Extract the wide string from the given Any. The operation 126: * requires Any to hold a String value and not a String. 127: * 128: * @param an_any an Any to extract from. 129: * 130: * @return the extracted string. 131: */ 132: public static String extract(Any an_any) 133: { 134: if (an_any.type().equal(type())) 135: { 136: an_any.type(twString); 137: return an_any.extract_wstring(); 138: } 139: else 140: { 141: BAD_OPERATION bad = new BAD_OPERATION("WString value type expected"); 142: bad.minor = Minor.Any; 143: throw bad; 144: } 145: } 146: 147: /** 148: * Insert the wide string into the given Any. After the operation, 149: * the Any will have a Wide String Value typecode and not a 150: * String or WString typecode. 151: * 152: * @param an_any an Any to insert into. 153: * 154: * @param that a string to insert. 155: */ 156: public static void insert(Any an_any, String that) 157: { 158: an_any.insert_wstring(that); 159: an_any.type(type()); 160: } 161: 162: /** 163: * Reads a wide string as a value type. 164: * 165: * @param in a stream to read value from. 166: */ 167: public static String read(InputStream in) 168: { 169: return in.read_wstring(); 170: } 171: 172: /** 173: * Create and return the value box typecode, named "WStringValue", with the 174: * content typecode being unbounded string. 175: */ 176: public static TypeCode type() 177: { 178: ORB orb = OrbRestricted.Singleton; 179: return orb.create_value_box_tc(id(), "WStringValue", twString); 180: } 181: 182: /** 183: * Writes a wide string as a value type. 184: * 185: * @param out a stream to write value into. 186: * 187: * @param a_string a string to write. 188: */ 189: public static void write(OutputStream out, String a_string) 190: { 191: out.write_wstring(a_string); 192: } 193: }