001    /* ValueBaseHolder.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.CORBA;
040    
041    import org.omg.CORBA.portable.InputStream;
042    import org.omg.CORBA.portable.OutputStream;
043    import org.omg.CORBA.portable.Streamable;
044    import org.omg.CORBA.portable.ValueBase;
045    
046    import java.io.Serializable;
047    
048    /**
049     * A holder to store a {@link ValueBase} that is handled as
050     * {@link Serializable} here.
051     *
052     * @since 1.3
053     *
054     * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
055     */
056    public class ValueBaseHolder
057      implements Streamable
058    {
059      /**
060       * A stored value of the value base type.
061       */
062      public Serializable value;
063    
064      /**
065       * Create an unitialised instance.
066       */
067      public ValueBaseHolder()
068      {
069      }
070    
071      /**
072       * Create an instance, initialised into the given value.
073       *
074       * @param initial an initial value.
075       */
076      public ValueBaseHolder(Serializable initial)
077      {
078        value = initial;
079      }
080    
081      /**
082       * Read fill in the value field by reading an instance from the
083       * given input stream. Uses {@link ValueBaseHelper}
084       *
085       * @param input a stream to read from.
086       */
087      public void _read(InputStream input)
088      {
089        value = ValueBaseHelper.read(input);
090      }
091    
092      /**
093       * Get the typecode of the stored instance. Uses {@link ValueBaseHelper}
094       */
095      public TypeCode _type()
096      {
097        return ValueBaseHelper.type();
098      }
099    
100      /**
101       * Write the stored instance to the given output stream.
102       * Uses {@link ValueBaseHelper}
103       *
104       * @param output a stream to write to.
105       */
106      public void _write(OutputStream output)
107      {
108        ValueBaseHelper.write(output, value);
109      }
110    }