Initial revision

From-SVN: r102074

libjava/classpath/gnu/javax/rmi/PortableServer.java

@@ -0,0 +1,141 @@
+/* PortableServer.java -- 
+   Copyright (C) 2002, 2004  Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package gnu.javax.rmi;
+
+import java.rmi.Remote;
+import java.rmi.RemoteException;
+import java.rmi.NoSuchObjectException;
+import java.rmi.server.UnicastRemoteObject;
+import java.rmi.server.RemoteStub;
+import java.util.Hashtable;
+
+import javax.rmi.CORBA.*;
+
+/**
+ * The relationship of PortableRemoteObjectImpl with PortableServer
+ * is like that of UnicastRemoteObject with UnicastServer
+ */
+public class PortableServer
+{
+  static private Hashtable tieCache = new Hashtable();
+  static private Object NO_TIE = new Object();
+    
+  public static final synchronized void exportObject(Remote obj)
+    throws RemoteException
+  {
+    if(Util.getTie(obj) != null)
+      return;
+    
+    Tie tie = getTieFromRemote(obj);
+    if (tie != null)
+      Util.registerTarget(tie, obj);
+    else
+      UnicastRemoteObject.exportObject(obj);
+  }
+    
+  public static final void unexportObject(Remote obj)
+  {
+    if (Util.getTie(obj) != null)
+      Util.unexportObject(obj);
+    if (tieCache.get(obj) != null) //??
+      tieCache.remove(obj);
+  }
+  
+  public static final Remote toStub(Remote obj)
+    throws NoSuchObjectException
+  {
+    if (obj instanceof Stub || obj instanceof RemoteStub) 
+      return obj;
+    
+    Tie tie = Util.getTie(obj);
+    Remote stub;
+    if (tie != null)
+      stub = getStubFromTie(tie);
+    else
+      throw new NoSuchObjectException("Can't toStub an unexported object");
+    return stub;
+  }
+    
+  static synchronized Tie getTieFromRemote(Remote obj)
+  {
+    Object tie = tieCache.get(obj);
+    if (tie == null)
+      {
+	tie = getTieFromClass(obj.getClass());
+	if(tie == null)
+	  tieCache.put(obj, NO_TIE);
+	else
+	  tieCache.put(obj, tie);
+      }
+    else
+      if(tie != NO_TIE)
+	{
+	  try
+	    {
+	      tie = obj.getClass().newInstance();
+	    }
+	  catch(Exception _)
+	    {
+	      tie = null;
+	    }
+	}
+      else //NO_TIE
+	tie = null;
+                
+    return (Tie)tie;
+  }
+  
+  static synchronized Tie getTieFromClass(Class clz)
+  {
+    //FIX ME
+    return null;
+  }
+    
+  public static Remote getStubFromTie(Tie tie)
+  {
+    //FIX ME
+    return null;
+  }
+  
+  public static Remote getStubFromObjectImpl(ObjectImpl objimpl, Class toClass)
+  {
+    //FIX ME
+    return null;
+  }
+}