001    /* LongSeqHolder.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 gnu.CORBA.typecodes.ArrayTypeCode;
042    
043    import org.omg.CORBA.portable.InputStream;
044    import org.omg.CORBA.portable.OutputStream;
045    import org.omg.CORBA.portable.Streamable;
046    
047    /**
048     * A sequence holder for CORBA <code>LongSeq</code> that is mapped into
049     * java <code>int[]</code>. 
050     * 
051     * @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
052     */
053    public final class LongSeqHolder
054      implements Streamable
055    {
056      /**
057       * The type code for this holder. Each holder has a different instance.
058       */
059      private final ArrayTypeCode typecode = 
060        new ArrayTypeCode(TCKind.tk_long);
061      
062      /**
063       * The <code>int[]</code> (CORBA <code>LongSeq</code>) value,
064       * held by this LongSeqHolder.
065       */
066      public int[] value;
067      
068      /**
069       * Constructs an instance of LongSeqHolder,
070       * initializing {@link #value} to <code>null</code>.
071       */
072      public LongSeqHolder()
073      {
074      }  
075      
076      /**
077       * Constructs an instance of LongSeqHolder,
078       * initializing {@link #value} to the given <code>int</code>.
079       * 
080       * @param initial_value a value that will be assigned to the
081       * {@link #value} field.
082       */
083      public LongSeqHolder(int[] initial_value)
084      {
085        value = initial_value;
086        typecode.setLength(value.length);
087      }
088      
089      /**
090       * Fill in the {@link #value } field by reading the required data
091       * from the given stream. This method first reads the array size
092       * (as CORBA <code>long</code>and then calls the
093       * {@link org.omg.CORBA.portable.InputStream#read_long_array }.
094       * 
095       * @param input the input stream to read from.
096       */
097      public void _read(InputStream input)
098      {
099        value = new int[ input.read_long() ];
100        input.read_long_array(value, 0, value.length);
101        typecode.setLength(value.length);
102      }  
103      
104      /**
105       * Write the {@link #value } field to the given stream.
106       * This method first writes the array size
107       * (as CORBA <code>long</code>and then calls the
108       * {@link org.omg.CORBA.portable.OutputStream#write_long_array }.    
109       * 
110       * @param output the output stream to write into.
111       */
112      public void _write(OutputStream output)
113      {
114        output.write_long(value.length);
115        output.write_long_array(value, 0, value.length);
116      }  
117      
118      /**
119       * Returns the TypeCode, corresponding the CORBA type that is stored
120       * using this holder.
121       */
122      public TypeCode _type()
123      {
124        return typecode;
125      }  
126      
127      
128    }