old-autovect-branch/libjava/classpath/javax/rmi/CORBA/Tie.java

   1 /* Tie.java --
   2    Copyright (C) 2002, 2005 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38 package javax.rmi.CORBA;
  39
  40 import java.rmi.NoSuchObjectException;
  41 import java.rmi.Remote;
  42 import org.omg.CORBA.ORB;
  43 import org.omg.CORBA.portable.InvokeHandler;
  44
  45 /**
  46  * <p>
  47  * A Tie serves as a CORBA Servant or implementation base. It is connected to
  48  * the ORB on a server side, providing the implementation of the required
  49  * functionality. ORB access this implementation using {@link InvokeHandler}
  50  * ._invoke(..). All such calls are finally delegated to the object, returned by
  51  * {@link #getTarget()}.
  52  * </p>
  53  * <p>
  54  * Ties are generated from implementations (name pattern *Impl) and have the
  55  * name pattern _*Impl_Tie, for instance:<br>
  56  * <code>rmic -keep -iiop -poa -always gnu.testlet.java.rmi.Remote.CalculatorImpl</code>
  57  * </p>
  58  * <p>
  59  * Ties should normally be derived from the
  60  * {@link org.omg.PortableServer.Servant}. Such ties are generated by
  61  * <code>rmic</code> compiler using <code>-poa</code> key. Ties can be also
  62  * derived from {@link org.omg.CORBA_2_3.portable.ObjectImpl}.
  63  * </p>
  64  *
  65  * @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
  66  */
  67 public interface Tie
  68   extends InvokeHandler
  69 {
  70   /**
  71    * Get the invocation target, where all method calls should be delegated.
  72    *
  73    * @return the object, implementing methods, defined in the interface being
  74    * served by this Tie.
  75    */
  76   Remote getTarget();
  77
  78   /**
  79    * Set the invocation target, where all method calls should be delegated.
  80    *
  81    * @param target the object, implementing methods, defined in the interface
  82    * being served by this Tie. The code, produced by a typical rmic compiler
  83    * usually requires the target to be an instance of the implementation from
  84    * that the Tie was generated.
  85    *
  86    * @throws ClassCastException if the passed parameter is not an instance of
  87    * the implementation from that the Tie was generated.
  88    */
  89   void setTarget(Remote target);
  90
  91   /**
  92    * Get the ORB to that this Tie is connected.
  93    *
  94    * @see org.omg.PortableServer.Servant#_orb
  95    */
  96   ORB orb();
  97
  98   /**
  99    * Connect this Tie to the given ORB.
 100    */
 101   void orb(ORB orb);
 102
 103   /**
 104    * Get the object that delegates calls to this tie.
 105    *
 106    * @see org.omg.PortableServer.Servant#_this_object
 107    */
 108   org.omg.CORBA.Object thisObject();
 109
 110   /**
 111    * Deactivate this Tie. The tie is normally deactivated using POA mechanisms.
 112    * Depending on the POA policies, it may be possible to activate the Tie
 113    * again. The ties that are not derived from
 114    * {@link org.omg.PortableServer.Servant} deactivate themselves by
 115    * {@link ORB.disconnect}.
 116    *
 117    * @throws NoSuchObjectException if there are no objects served by this Tie,
 118    * or if the these objects are already deactivated.
 119    *
 120    * @see org.omg.PortableServer.POA#deactivate_object
 121    */
 122   void deactivate()
 123     throws NoSuchObjectException;
 124
 125 }