001    /* BindingIteratorPOA.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.CosNaming;
040    
041    import gnu.CORBA.Minor;
042    
043    import org.omg.CORBA.BAD_OPERATION;
044    import org.omg.CORBA.CompletionStatus;
045    import org.omg.CORBA.portable.InputStream;
046    import org.omg.CORBA.portable.InvokeHandler;
047    import org.omg.CORBA.portable.OutputStream;
048    import org.omg.CORBA.portable.ResponseHandler;
049    import org.omg.PortableServer.POA;
050    import org.omg.PortableServer.Servant;
051    
052    /**
053     * The binding iterator servant, used in POA-based naming service
054     * implementations.
055     * 
056     * @since 1.4 
057     *
058     * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
059     */
060    public abstract class BindingIteratorPOA
061      extends Servant
062      implements BindingIteratorOperations, InvokeHandler
063    {
064      /** @inheritDoc */
065      public String[] _all_interfaces(POA poa, byte[] object_ID)
066      {
067        return new String[] { BindingIteratorHelper.id() };
068      }
069    
070      /**
071       * Call the required method.
072       */
073      public OutputStream _invoke(String method, InputStream in, ResponseHandler rh)
074      {
075        OutputStream out = null;
076    
077        // We suppose that the next_n should be the most popular.
078        if (method.equals("next_n"))
079          {
080            // The next_n has been invoked.
081            int amount = in.read_ulong();
082            BindingListHolder a_list = new BindingListHolder();
083    
084            boolean result = next_n(amount, a_list);
085    
086            out = rh.createReply();
087            out.write_boolean(result);
088            BindingListHelper.write(out, a_list.value);
089          }
090        else if (method.equals("next_one"))
091          {
092            // The next_one has been invoked.
093            BindingHolder a_binding = new BindingHolder();
094    
095            boolean result = next_one(a_binding);
096    
097            out = rh.createReply();
098            out.write_boolean(result);
099            BindingHelper.write(out, a_binding.value);
100          }
101        else if (method.equals("destroy"))
102          {
103            // The destroy has been invoked.
104            destroy();
105            out = rh.createReply();
106          }
107        else
108          throw new BAD_OPERATION(method, Minor.Method, 
109            CompletionStatus.COMPLETED_MAYBE);
110    
111        return out;
112      }
113    
114      /**
115       * Get the CORBA object that delegates calls to this servant. The servant must
116       * be already connected to an ORB.
117       */
118      public BindingIterator _this()
119      {
120        return BindingIteratorHelper.narrow(super._this_object());
121      }
122    
123      /**
124       * Get the CORBA object that delegates calls to this servant. Connect to the
125       * given ORB, if needed.
126       */
127      public BindingIterator _this(org.omg.CORBA.ORB orb)
128      {
129        return BindingIteratorHelper.narrow(super._this_object(orb));
130      }
131    }