001    /* ServantActivatorPOA.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.PortableServer;
040    
041    import gnu.CORBA.Poa.gnuServantObject;
042    
043    import org.omg.CORBA.NO_IMPLEMENT;
044    import org.omg.CORBA.ORB;
045    import org.omg.CORBA.SystemException;
046    import org.omg.CORBA.portable.InputStream;
047    import org.omg.CORBA.portable.InvokeHandler;
048    import org.omg.CORBA.portable.OutputStream;
049    import org.omg.CORBA.portable.ResponseHandler;
050    
051    /**
052     * <p>This ServantActivator stub is an optional base for the
053     * servant activators. This stub cannot serve remote invocations, as
054     * methods in {@link ServantActivatorOperations} take POA as one of parameters.
055     * Both JDK 1.5 API and OMG specifies that POA is a local object that must not
056     * be transferred to the remote invocation target.
057     * </p><p>
058     * You do not need to derive your servant activator from this stub,
059     * it is enough to implement the {@link ServantActivator} interface.
060     * But you may choose to do this if you need the functional
061     * {@link #_all_interfaces(POA, byte[])} method or want to keep default
062     * behavior during the incarnation or etherialization.
063     * </p>
064     */
065    public abstract class ServantActivatorPOA
066      extends Servant
067      implements InvokeHandler, ServantActivatorOperations
068    {
069      /**
070       * Used to access the outer class in the nested delegator class.
071       */
072      final ServantActivatorPOA THIS = this;
073    
074      /**
075       * This class is used to support _this.
076       */
077      class delegator
078        extends gnuServantObject
079        implements ServantActivator
080      {
081        delegator(Servant s)
082        {
083          super(s, new byte[ 0 ], null, null);
084        }
085    
086        public Servant incarnate(byte[] key, POA poa)
087                          throws org.omg.PortableServer.ForwardRequest
088        {
089          return THIS.incarnate(key, poa);
090        }
091    
092        public void etherealize(byte[] key, POA poa, Servant servant,
093                                boolean cleanup, boolean remains
094                               )
095        {
096          THIS.etherealize(key, poa, servant, cleanup, remains);
097        }
098      }
099    
100      /**
101       * Our implementation will not call this method. After setting your
102       * manager to POA, it will call incarnate and etherialize directly.
103       */
104      public OutputStream _invoke(String method, InputStream input,
105                                  ResponseHandler handler
106                                 )
107                           throws SystemException
108      {
109        throw new NO_IMPLEMENT();
110      }
111    
112      /**
113       * Returns an array of interfaces, supported by the servant activator.
114       */
115      public String[] _all_interfaces(POA poa, byte[] Object_Id)
116      {
117        return new _ServantActivatorStub()._ids();
118      }
119    
120      /**
121       * Return the complete instance of the servant activator, based on
122       * the current class (ServantActivatorPOA or derived).
123       */
124      public ServantActivator _this()
125      {
126        return new delegator(this);
127      }
128    
129      /**
130       * Return the complete instance of the servant activator, based on
131       * the current class (ServantActivatorPOA or derived).
132       */
133      public ServantActivator _this(ORB orb)
134      {
135        return new delegator(this);
136      }
137    }