001 /* RemoteServer.java --
002 Copyright (c) 1996, 1997, 1998, 1999, 2004, 2006
003 Free Software Foundation, Inc.
004
005 This file is part of GNU Classpath.
006
007 GNU Classpath is free software; you can redistribute it and/or modify
008 it under the terms of the GNU General Public License as published by
009 the Free Software Foundation; either version 2, or (at your option)
010 any later version.
011
012 GNU Classpath is distributed in the hope that it will be useful, but
013 WITHOUT ANY WARRANTY; without even the implied warranty of
014 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
015 General Public License for more details.
016
017 You should have received a copy of the GNU General Public License
018 along with GNU Classpath; see the file COPYING. If not, write to the
019 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
020 02110-1301 USA.
021
022 Linking this library statically or dynamically with other modules is
023 making a combined work based on this library. Thus, the terms and
024 conditions of the GNU General Public License cover the whole
025 combination.
026
027 As a special exception, the copyright holders of this library give you
028 permission to link this library with independent modules to produce an
029 executable, regardless of the license terms of these independent
030 modules, and to copy and distribute the resulting executable under
031 terms of your choice, provided that you also meet, for each linked
032 independent module, the terms and conditions of the license of that
033 module. An independent module is a module which is not derived from
034 or based on this library. If you modify this library, you may extend
035 this exception to your version of the library, but you are not
036 obligated to do so. If you do not wish to do so, delete this
037 exception statement from your version. */
038
039
040 package java.rmi.server;
041
042 import gnu.java.rmi.server.RMIIncomingThread;
043
044 import java.io.OutputStream;
045 import java.io.PrintStream;
046
047 /**
048 * A common superclass for the server implementations.
049 */
050 public abstract class RemoteServer
051 extends RemoteObject
052 {
053 private static final long serialVersionUID = - 4100238210092549637L;
054
055 /**
056 * Does nothing, delegates to super().
057 */
058 protected RemoteServer()
059 {
060 super();
061 }
062
063 /**
064 * Does nothing, delegates to super(ref).
065 */
066 protected RemoteServer(RemoteRef ref)
067 {
068 super(ref);
069 }
070
071 /**
072 * Get the host of the calling client. The current thread must be an instance
073 * of the {@link RMIIncomingThread}.
074 *
075 * @return the client host address
076 *
077 * @throws ServerNotActiveException if the current thread is not an instance
078 * of the RMIIncomingThread.
079 */
080 public static String getClientHost() throws ServerNotActiveException
081 {
082 Thread currThread = Thread.currentThread();
083 if (currThread instanceof RMIIncomingThread)
084 {
085 RMIIncomingThread incomingThread = (RMIIncomingThread) currThread;
086 return incomingThread.getClientHost();
087 }
088 else
089 {
090 throw new ServerNotActiveException(
091 "Unknown client host - current thread not instance of 'RMIIncomingThread'");
092 }
093 }
094
095 /**
096 * Set the stream for logging RMI calls.
097 *
098 * @param out the stream to set or null to turn the logging off.
099 */
100 public static void setLog(OutputStream out)
101 {
102 throw new Error("Not implemented");
103 }
104
105 /**
106 * Get the stream for logging RMI calls.
107 *
108 * @return the associated stream.
109 */
110 public static PrintStream getLog()
111 {
112 throw new Error("Not implemented");
113 }
114
115 }