Imported from mainline FSF repositories

From-SVN: r94600

7 files changed, 754 insertions, 0 deletions

diff --git a/libjava/gnu/javax/rmi/CORBA/DelegateFactory.java b/libjava/gnu/javax/rmi/CORBA/DelegateFactory.java
new file mode 100644
index 0000000..c98549b
--- /dev/null
+++ b/libjava/gnu/javax/rmi/CORBA/DelegateFactory.java
@@ -0,0 +1,74 @@
+/* DelegateFactory.java -- 
+   Copyright (C) 2002 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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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.CORBA;
+
+import java.util.HashMap;
+import javax.rmi.CORBA.Util;
+
+public class DelegateFactory
+{
+  private static HashMap cache = new HashMap(4);
+    
+  public static synchronized Object getInstance(String type)
+    throws GetDelegateInstanceException
+  {
+    Object r = cache.get(type);
+    if (r != null)
+      return r;
+    String dcname = System.getProperty("javax.rmi.CORBA." + type + "Class");
+    if (dcname == null)
+      {
+	//throw new DelegateException
+	//  ("no javax.rmi.CORBA.XXXClass property sepcified.");
+	dcname = "gnu.javax.rmi.CORBA." + type + "DelegateImpl";
+      }
+    try
+      {
+	Class dclass = Class.forName(dcname);
+	r = dclass.newInstance();
+	cache.put(type, r);
+	return r;
+      }
+    catch(Exception e)
+      {
+	throw new GetDelegateInstanceException
+	  ("Exception when trying to get delegate instance:" + dcname, e);
+      }
+  }
+}
diff --git a/libjava/gnu/javax/rmi/CORBA/GetDelegateInstanceException.java b/libjava/gnu/javax/rmi/CORBA/GetDelegateInstanceException.java
new file mode 100644
index 0000000..27b84f1
--- /dev/null
+++ b/libjava/gnu/javax/rmi/CORBA/GetDelegateInstanceException.java
@@ -0,0 +1,58 @@
+/* GetDelegateInstanceException.java -- 
+   Copyright (C) 2002 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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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.CORBA;
+
+import java.io.PrintStream;
+import java.io.PrintWriter;
+
+public class GetDelegateInstanceException
+  extends Exception
+{
+  private Throwable next;
+  
+  public GetDelegateInstanceException(String msg)
+  {
+    super(msg);
+  }
+  
+  public GetDelegateInstanceException(String msg, Throwable next)
+  {
+    super(msg, next);
+  }
+}
diff --git a/libjava/gnu/javax/rmi/CORBA/PortableRemoteObjectDelegateImpl.java b/libjava/gnu/javax/rmi/CORBA/PortableRemoteObjectDelegateImpl.java
new file mode 100644
index 0000000..973c4c4
--- /dev/null
+++ b/libjava/gnu/javax/rmi/CORBA/PortableRemoteObjectDelegateImpl.java
@@ -0,0 +1,133 @@
+/* PortableRemoteObjectDelegateImpl.java -- 
+   Copyright (C) 2002 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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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.CORBA;
+
+import java.rmi.*;
+import java.rmi.server.*;
+import gnu.javax.rmi.*;
+import javax.rmi.CORBA.*;
+
+public class PortableRemoteObjectDelegateImpl
+  implements PortableRemoteObjectDelegate
+{
+    
+  public PortableRemoteObjectDelegateImpl()
+  {
+  }
+
+  public void connect(Remote remote, Remote remote1)
+    throws RemoteException
+  {
+    throw new Error("Not implemented for PortableRemoteObjectDelegateImpl");
+  }
+        
+  public void exportObject(Remote obj)
+    throws RemoteException
+  {
+    PortableServer.exportObject(obj);
+  }
+
+  public Object narrow(Object narrowFrom, Class narrowTo)
+    throws ClassCastException
+  {
+    if (narrowTo == null)
+      throw new ClassCastException("Can't narrow to null class");
+    if (narrowFrom == null)
+      return null;
+
+    Class fromClass = narrowFrom.getClass();
+    Object result = null;
+        
+    try
+      {
+	if (narrowTo.isAssignableFrom(fromClass))
+	  result = narrowFrom;
+	else
+	  {
+	    System.out.println("We still haven't implement this case: narrow "
+			       + narrowFrom + " of type " + fromClass + " to "
+			       + narrowTo);
+	    Class[] cs = fromClass.getInterfaces();
+	    for (int i = 0; i < cs.length; i++)
+	      System.out.println(cs[i]);
+	    Exception e1 = new Exception();
+	    try
+	      {
+		throw e1;
+	      }
+	    catch(Exception ee)
+	      {
+		ee.printStackTrace();
+	      }
+	    System.exit(2);
+	    //throw new Error("We still haven't implement this case: narrow "
+	    //                + narrowFrom + " of type " + fromClass + " to "
+	    //                + narrowTo);
+	    /*
+	      ObjectImpl objimpl = (ObjectImpl)narrowFrom;
+	      if(objimpl._is_a(PortableServer.getTypeName(narrowTo)))
+	      result = PortableServer.getStubFromObjectImpl(objimpl, narrowTo);
+	    */
+	  }
+      }
+    catch(Exception e)
+      {
+	result = null;
+      }
+        
+    if (result == null)
+      throw new ClassCastException("Can't narrow from "
+				   + fromClass + " to " + narrowTo);
+            
+    return result;
+  }
+        
+  public Remote toStub(Remote obj)
+    throws NoSuchObjectException
+  {
+    return PortableServer.toStub(obj);
+  }
+
+  public void unexportObject(Remote obj)
+    throws NoSuchObjectException
+  {
+    PortableServer.unexportObject(obj);
+  }
+
+}
diff --git a/libjava/gnu/javax/rmi/CORBA/StubDelegateImpl.java b/libjava/gnu/javax/rmi/CORBA/StubDelegateImpl.java
new file mode 100644
index 0000000..894e502
--- /dev/null
+++ b/libjava/gnu/javax/rmi/CORBA/StubDelegateImpl.java
@@ -0,0 +1,113 @@
+/* StubDelegateImpl.java -- 
+   Copyright (C) 2002 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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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.CORBA;
+
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+//import org.omg.CORBA.portable.Delegate;
+//import org.omg.CORBA.portable.InputStream;
+//import org.omg.CORBA.portable.OutputStream;
+//import org.omg.CORBA_2_3.portable.ObjectImpl;
+//import org.omg.CORBA.portable.ObjectImpl;
+//import org.omg.CORBA.BAD_OPERATION;
+//import org.omg.CORBA.ORB;
+import java.rmi.RemoteException;
+import javax.rmi.CORBA.Stub;
+import javax.rmi.CORBA.StubDelegate;
+import javax.rmi.CORBA.Tie;
+import javax.rmi.CORBA.StubDelegate;
+
+public class StubDelegateImpl
+  implements StubDelegate
+{
+
+  private int hashCode;
+    
+  public StubDelegateImpl(){
+    hashCode = 0;   
+  }
+  // XXX javax.rmi.ORB -> org.omg.CORBA.ORB
+  public void connect(Stub self, javax.rmi.ORB orb)
+    throws RemoteException
+  {
+    throw new Error("Not implemented for StubDelegate");
+  }
+
+  public boolean equals(Stub self, Object obj)
+  {
+    if(self == null || obj == null)
+      return self == obj;
+    if(!(obj instanceof Stub))
+      return false;
+    return self.hashCode() == ((Stub)obj).hashCode();
+  }
+
+  public int hashCode(Stub self)
+  {
+    //FIX ME
+    return hashCode;
+  }
+
+  public String toString(Stub self)
+  {
+    try
+      {
+	return self._orb().object_to_string(self);
+      }
+    // XXX javax.rmi.BAD_OPERATION -> org.omg.CORBA.BAD_OPERATION
+    catch(javax.rmi.BAD_OPERATION bad_operation)
+      {
+	return null;
+      }
+  }
+
+  public void readObject(Stub self, ObjectInputStream s)
+    throws IOException, ClassNotFoundException
+  {
+    throw new Error("Not implemented for StubDelegate");
+  }
+
+  public void writeObject(Stub self, ObjectOutputStream s)
+    throws IOException
+  {
+    throw new Error("Not implemented for StubDelegate");
+  }
+    
+}
diff --git a/libjava/gnu/javax/rmi/CORBA/UtilDelegateImpl.java b/libjava/gnu/javax/rmi/CORBA/UtilDelegateImpl.java
new file mode 100644
index 0000000..70b2e60
--- /dev/null
+++ b/libjava/gnu/javax/rmi/CORBA/UtilDelegateImpl.java
@@ -0,0 +1,152 @@
+/* UtilDelegateImpl.java -- 
+   Copyright (C) 2002 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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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.CORBA;
+
+import java.rmi.Remote;
+import java.rmi.RemoteException;
+import java.rmi.server.RMIClassLoader;
+import java.net.MalformedURLException;
+import java.io.*;
+//import org.omg.CORBA.ORB;
+//import org.omg.CORBA.SystemException;
+//import org.omg.CORBA.portable.InputStream;
+//import org.omg.CORBA.portable.OutputStream;
+import javax.rmi.CORBA.*;
+
+public class UtilDelegateImpl
+  implements UtilDelegate
+{
+  // XXX javax.rmi.ORB -> org.omg.CORBA.ORB
+  public Object copyObject(Object obj, javax.rmi.ORB orb)
+    throws RemoteException
+  {
+    throw new Error("Not implemented for UtilDelegate");
+  }
+
+  // XXX javax.rmi.ORB -> org.omg.CORBA.ORB
+  public Object[] copyObjects(Object obj[], javax.rmi.ORB orb)
+    throws RemoteException
+  {
+    throw new Error("Not implemented for UtilDelegate");
+  }
+
+  public ValueHandler createValueHandler()
+  {
+    throw new Error("Not implemented for UtilDelegate");
+  }
+    
+  public String getCodebase(Class clz)
+  {
+    throw new Error("Not implemented for UtilDelegate");
+  }
+    
+  public Tie getTie(Remote target)
+  {
+    throw new Error("Not implemented for UtilDelegate");
+  }
+    
+  public boolean isLocal(Stub stub)
+    throws RemoteException
+  {
+    throw new Error("Not implemented for UtilDelegate");
+  }
+
+  public Class loadClass(String className, String remoteCodebase,
+		  	 ClassLoader loader)
+    throws ClassNotFoundException
+  {
+    try{
+      if (remoteCodebase == null)
+	return RMIClassLoader.loadClass(className);
+      else
+	return RMIClassLoader.loadClass(remoteCodebase, className);
+    }
+    catch (MalformedURLException e1)
+      {
+	throw new ClassNotFoundException(className, e1);
+      }
+    catch(ClassNotFoundException e2)
+      {
+	if(loader != null)
+	  return loader.loadClass(className);
+	else
+	  return null;
+      }
+  }
+
+  public RemoteException mapSystemException(SystemException ex)
+  {
+    throw new Error("Not implemented for UtilDelegate");
+  }
+
+  public Object readAny(InputStream in)
+  {
+    throw new Error("Not implemented for UtilDelegate");
+  }
+
+  public void registerTarget(Tie tie, Remote target)
+  {
+    throw new Error("Not implemented for UtilDelegate");
+  }
+    
+  public void unexportObject(Remote target)
+  {
+    throw new Error("Not implemented for UtilDelegate");
+  }
+    
+  public RemoteException wrapException(Throwable orig)
+  {
+    throw new Error("Not implemented for UtilDelegate");
+  }
+    
+  public void writeAbstractObject(OutputStream out, Object obj)
+  {
+    throw new Error("Not implemented for UtilDelegate");
+  }
+    
+  public void writeAny(OutputStream out, Object obj)
+  {
+    throw new Error("Not implemented for UtilDelegate");
+  }
+
+  public void writeRemoteObject(OutputStream out, Object obj)
+  {
+    throw new Error("Not implemented for UtilDelegate");
+  }
+}
diff --git a/libjava/gnu/javax/rmi/CORBA/ValueHandlerImpl.java b/libjava/gnu/javax/rmi/CORBA/ValueHandlerImpl.java
new file mode 100644
index 0000000..6935aa6
--- /dev/null
+++ b/libjava/gnu/javax/rmi/CORBA/ValueHandlerImpl.java
@@ -0,0 +1,82 @@
+/* ValueHandlerImpl.java -- 
+   Copyright (C) 2002 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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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.CORBA;
+
+import java.io.*;
+//import org.omg.CORBA.portable.InputStream;
+//import org.omg.CORBA.portable.OutputStream;
+//import org.omg.SendingContext.RunTime;
+import javax.rmi.CORBA.ValueHandler;
+
+public class ValueHandlerImpl
+  implements ValueHandler
+{
+
+  public String getRMIRepositoryID(Class clz)
+  {
+    throw new Error("Not implemented for ValueHandler");
+  }
+
+  // XXX - Runtime -> RunTime
+  public Runtime getRunTimeCodeBase()
+  {
+    throw new Error("Not implemented for ValueHandler");
+  }
+    
+  public boolean isCustomMarshaled(Class clz)
+  {
+    throw new Error("Not implemented for ValueHandler");
+  }   
+    
+  // XXX - Runtime -> RunTime
+  public Serializable readValue(InputStream in, int offset, Class clz, String repositoryID, Runtime sender)
+  {
+    throw new Error("Not implemented for ValueHandler");
+  }
+    
+  public Serializable writeReplace(Serializable value)
+  {
+    throw new Error("Not implemented for ValueHandler");
+  }
+    
+  public void writeValue(OutputStream out, Serializable value)
+  {
+    throw new Error("Not implemented for ValueHandler");
+  }
+}
diff --git a/libjava/gnu/javax/rmi/PortableServer.java b/libjava/gnu/javax/rmi/PortableServer.java
new file mode 100644
index 0000000..b5022ca
--- /dev/null
+++ b/libjava/gnu/javax/rmi/PortableServer.java
@@ -0,0 +1,142 @@
+/* PortableServer.java -- 
+   Copyright (C) 2002 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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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.util.Hashtable;
+import java.rmi.Remote;
+import java.rmi.RemoteException;
+import java.rmi.NoSuchObjectException;
+import java.rmi.server.ExportException;
+import java.rmi.server.UnicastRemoteObject;
+import java.rmi.server.RemoteStub;
+import javax.rmi.CORBA.*;
+//import org.omg.CORBA.portable.ObjectImpl;
+
+/**
+ * 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;
+  }
+}