001    /* ServiceIdHelper.java --
002       Copyright (C) 2005, 2006 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.IOP;
040    
041    import gnu.CORBA.OrbRestricted;
042    
043    import org.omg.CORBA.Any;
044    import org.omg.CORBA.BAD_OPERATION;
045    import org.omg.CORBA.ORB;
046    import org.omg.CORBA.TCKind;
047    import org.omg.CORBA.TypeCode;
048    import org.omg.CORBA.portable.InputStream;
049    import org.omg.CORBA.portable.OutputStream;
050    
051    /**
052    * A helper operations for a context service id. A service Id is an integer
053    * constant and needs no helper, but the one is included to
054    * to facilitate the automated code handling.
055    *
056    * @specnote In this implementation, this class is not in use. Its "logical"
057    * place is the read/write methods of the ServiceContextHelper, to handle the
058    * first member (int) of the context record.
059    *
060    * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
061    */
062    public abstract class ServiceIdHelper
063    {
064      /**
065       * Create the ServiceId typecode (alias of CORBA ulong, named "ServiceId".
066       */
067      public static TypeCode type()
068      {
069        ORB orb = OrbRestricted.Singleton;
070        return orb.create_alias_tc("IDL:omg.org/IOP/ServiceId:1.0", "ServiceId",
071                                   orb.get_primitive_tc(TCKind.tk_ulong)
072                                  );
073      }
074    
075      /**
076      * Insert the int into the given Any.
077      */
078      public static void insert(Any any, int that)
079      {
080        any.insert_ulong(that);
081      }
082    
083      /**
084       * Extract the int from given Any.
085       * This method uses the ServiceContextHolder.
086       *
087       * @throws BAD_OPERATION if the passed Any does not contain int.
088       */
089      public static int extract(Any any)
090      {
091        return any.extract_ulong();
092      }
093    
094      /**
095       * Get the int repository id.
096       *
097       * @return "IDL:omg.org/IOP/ServiceId:1.0", always.
098       */
099      public static String id()
100      {
101        return "IDL:omg.org/IOP/ServiceId:1.0";
102      }
103    
104      /**
105       * Read the ServiceId from the CDR intput stream.
106       *
107       * @param input a org.omg.CORBA.portable stream to read from.
108       */
109      public static int read(InputStream input)
110      {
111        return input.read_ulong();
112      }
113    
114      /**
115       * Write the ServiceId to the CDR output stream.
116       *
117       * @param output a org.omg.CORBA.portable stream stream to write into.
118       * @param value a value to write.
119       */
120      public static void write(OutputStream output, int value)
121      {
122        output.write_ulong(value);
123      }
124    }