001    /* ServiceDetailHelper.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.CORBA;
040    
041    import gnu.CORBA.Minor;
042    import gnu.CORBA.OrbRestricted;
043    import gnu.CORBA.ServiceDetailHolder;
044    
045    import org.omg.CORBA.portable.InputStream;
046    import org.omg.CORBA.portable.OutputStream;
047    
048    /**
049     * The helper operations on the Service Detail.
050     *
051     * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
052     */
053    public abstract class ServiceDetailHelper
054    {
055      /**
056       * The service detail repository id.
057       */
058      private static String _id = "IDL:omg.org/CORBA/ServiceDetail:1.0";
059    
060      /**
061       * Extract the service detail info from the given {@link Any}
062       *
063       * @param a the Any to extract from.
064       *
065       * @return the extracted detail.
066       *
067       * @throws BAD_OPERATION if the parameter holds something different
068       * from the ServiceDetail.
069       */
070      public static ServiceDetail extract(Any a)
071      {
072        try
073          {
074            return ((ServiceDetailHolder) a.extract_Streamable()).value;
075          }
076        catch (ClassCastException ex)
077          {
078            BAD_OPERATION bad = new BAD_OPERATION();
079            bad.initCause(ex);
080            bad.minor = Minor.Any;
081            throw bad;
082          }
083      }
084    
085      /**
086       * Get the service detail repository id.
087       *
088       * @return the service detail repository id,
089       * <code>IDL:omg.org/CORBA/ServiceDetail:1.0</code>, always.
090       */
091      public static String id()
092      {
093        return _id;
094      }
095    
096      /**
097       * Insert the service detail into the given {@link Any}.
098       *
099       * @param a the Any to insert into.
100       *
101       * @param that the detail to insert.
102       */
103      public static void insert(Any a, ServiceDetail that)
104      {
105        a.insert_Streamable(new ServiceDetailHolder(that));
106      }
107    
108      /**
109       * Read the service detail information from the given CDR
110       * intput stream. First reads the type, then the flexible
111       * length byte sequence.
112       *
113       * @param istream a stram to read from.
114       *
115       * @return the loaded service detail.
116       */
117      public static ServiceDetail read(InputStream istream)
118      {
119        ServiceDetail value = new ServiceDetail();
120        value.service_detail_type = istream.read_ulong();
121    
122        int l = istream.read_long();
123        value.service_detail = new byte[ l ];
124        istream.read_octet_array(value.service_detail, 0, l);
125        return value;
126      }
127    
128      /**
129       * Get the typecode of the service detail, assuming to be it
130       * a structure with the two fields.
131       *
132       * @return the newly created or cached typecode value.
133       */
134      public static TypeCode type()
135      {
136        ORB orb = OrbRestricted.Singleton;
137    
138        StructMember[] members = new StructMember[ 2 ];
139    
140        TypeCode type =
141          orb.create_alias_tc(_id, "ServiceDetailType",
142                              orb.get_primitive_tc(TCKind.tk_ulong)
143          );
144        members [ 0 ] = new StructMember("service_detail_type", type, null);
145    
146        TypeCode data =
147          orb.create_sequence_tc(0, orb.get_primitive_tc(TCKind.tk_octet));
148        members [ 1 ] = new StructMember("service_detail", data, null);
149    
150        return orb.create_struct_tc(id(), "ServiceDetail", members);
151      }
152    
153      /**
154       * Write the service detail data to the given CDR output stream.
155       * Writes the detail type first, then the detail type data
156       * as the variable length byte sequence.
157       *
158       * @param ostream a stream to write into.
159       * @param value a value to write.
160       */
161      public static void write(OutputStream ostream, ServiceDetail value)
162      {
163        ostream.write_ulong(value.service_detail_type);
164        ostream.write_long(value.service_detail.length);
165        ostream.write_octet_array(value.service_detail, 0,
166          value.service_detail.length
167        );
168      }
169    }