001 /* NameValuePairHelper.java --
002 Copyright (C) 2005 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.DynamicAny;
040
041 import gnu.CORBA.Minor;
042 import gnu.CORBA.NameValuePairHolder;
043 import gnu.CORBA.OrbRestricted;
044
045 import org.omg.CORBA.Any;
046 import org.omg.CORBA.BAD_OPERATION;
047 import org.omg.CORBA.ORB;
048 import org.omg.CORBA.StructMember;
049 import org.omg.CORBA.TCKind;
050 import org.omg.CORBA.TypeCode;
051 import org.omg.CORBA.portable.InputStream;
052 import org.omg.CORBA.portable.OutputStream;
053
054 /**
055 * A helper operations for the structure {@link NameValuePair}.
056 *
057 * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
058 */
059 public abstract class NameValuePairHelper
060 {
061 /**
062 * Create the NameValuePair typecode (structure,
063 * named "NameValuePair").
064 * The typecode states that the structure contains the
065 * following fields: id, value.
066 */
067 public static TypeCode type()
068 {
069 ORB orb = OrbRestricted.Singleton;
070 StructMember[] members = new StructMember[ 2 ];
071
072 TypeCode field;
073
074 field =
075 orb.create_alias_tc("IDL:omg.org/DynamicAny/FieldName:1.0",
076 "FieldName",
077 orb.get_primitive_tc(TCKind.tk_string)
078 );
079 members [ 0 ] = new StructMember("id", field, null);
080
081 field = orb.get_primitive_tc(TCKind.tk_any);
082 members [ 1 ] = new StructMember("value", field, null);
083 return orb.create_struct_tc(id(), "NameValuePair", members);
084 }
085
086 /**
087 * Insert the NameValuePair into the given Any.
088 * This method uses the NameValuePairHolder.
089 *
090 * @param any the Any to insert into.
091 * @param that the NameValuePair to insert.
092 */
093 public static void insert(Any any, NameValuePair that)
094 {
095 any.insert_Streamable(new NameValuePairHolder(that));
096 }
097
098 /**
099 * Extract the NameValuePair from given Any.
100 * This method uses the NameValuePairHolder.
101 *
102 * @throws BAD_OPERATION if the passed Any does not contain NameValuePair.
103 */
104 public static NameValuePair extract(Any any)
105 {
106 try
107 {
108 return ((NameValuePairHolder) any.extract_Streamable()).value;
109 }
110 catch (ClassCastException cex)
111 {
112 BAD_OPERATION bad = new BAD_OPERATION("NameValuePair expected");
113 bad.initCause(cex);
114 bad.minor = Minor.Any;
115 throw bad;
116 }
117 }
118
119 /**
120 * Get the NameValuePair repository id.
121 *
122 * @return "IDL:omg.org/DynamicAny/NameValuePair:1.0", always.
123 */
124 public static String id()
125 {
126 return "IDL:omg.org/DynamicAny/NameValuePair:1.0";
127 }
128
129 /**
130 * Read the structure from the CDR intput stream.
131 *
132 * @param input a org.omg.CORBA.portable stream to read from.
133 */
134 public static NameValuePair read(InputStream input)
135 {
136 NameValuePair value = new NameValuePair();
137 value.id = input.read_string();
138 value.value = input.read_any();
139 return value;
140 }
141
142 /**
143 * Write the structure to the CDR output stream.
144 *
145 * @param output a org.omg.CORBA.portable stream stream to write into.
146 * @param value a value to write.
147 */
148 public static void write(OutputStream output, NameValuePair value)
149 {
150 output.write_string(value.id);
151 output.write_any(value.value);
152 }
153 }