Source for gnu.java.rmi.registry.RegistryImpl

   1: /* RegistryImpl.java --
   2:    Copyright (c) 1996, 1997, 1998, 1999, 2002, 2005, 2008, 2009, 2010, 2011
   3:    Free Software Foundation, Inc.
   4: 
   5: This file is part of GNU Classpath.
   6: 
   7: GNU Classpath is free software; you can redistribute it and/or modify
   8: it under the terms of the GNU General Public License as published by
   9: the Free Software Foundation; either version 2, or (at your option)
  10: any later version.
  11: 
  12: GNU Classpath is distributed in the hope that it will be useful, but
  13: WITHOUT ANY WARRANTY; without even the implied warranty of
  14: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15: General Public License for more details.
  16: 
  17: You should have received a copy of the GNU General Public License
  18: along with GNU Classpath; see the file COPYING.  If not, write to the
  19: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  20: 02110-1301 USA.
  21: 
  22: Linking this library statically or dynamically with other modules is
  23: making a combined work based on this library.  Thus, the terms and
  24: conditions of the GNU General Public License cover the whole
  25: combination.
  26: 
  27: As a special exception, the copyright holders of this library give you
  28: permission to link this library with independent modules to produce an
  29: executable, regardless of the license terms of these independent
  30: modules, and to copy and distribute the resulting executable under
  31: terms of your choice, provided that you also meet, for each linked
  32: independent module, the terms and conditions of the license of that
  33: module.  An independent module is a module which is not derived from
  34: or based on this library.  If you modify this library, you may extend
  35: this exception to your version of the library, but you are not
  36: obligated to do so.  If you do not wish to do so, delete this
  37: exception statement from your version. */
  38: 
  39: package gnu.java.rmi.registry;
  40: 
  41: import gnu.java.rmi.server.UnicastServerRef;
  42: 
  43: import java.rmi.AccessException;
  44: import java.rmi.AlreadyBoundException;
  45: import java.rmi.NotBoundException;
  46: import java.rmi.Remote;
  47: import java.rmi.RemoteException;
  48: import java.rmi.registry.LocateRegistry;
  49: import java.rmi.registry.Registry;
  50: import java.rmi.server.ObjID;
  51: import java.rmi.server.RMIClientSocketFactory;
  52: import java.rmi.server.RMIServerSocketFactory;
  53: import java.rmi.server.RMISocketFactory;
  54: import java.rmi.server.UnicastRemoteObject;
  55: import java.util.Enumeration;
  56: import java.util.Hashtable;
  57: 
  58: public class RegistryImpl
  59:         extends UnicastRemoteObject implements Registry {
  60: 
  61: private Hashtable bindings = new Hashtable();
  62: 
  63: public RegistryImpl(int port) throws RemoteException {
  64:         this(port, RMISocketFactory.getSocketFactory(), RMISocketFactory.getSocketFactory());
  65: }
  66: 
  67: public RegistryImpl(int port, RMIClientSocketFactory cf, RMIServerSocketFactory sf) throws RemoteException {
  68:         super(new UnicastServerRef(new ObjID(ObjID.REGISTRY_ID), port, sf));
  69:         // The following is unnecessary, because UnicastRemoteObject export itself automatically.
  70:         //((UnicastServerRef)getRef()).exportObject(this);
  71: }
  72: 
  73: public Remote lookup(String name) throws RemoteException, NotBoundException, AccessException {
  74:         Object obj = bindings.get(name);
  75:         if (obj == null) {
  76:                 throw new NotBoundException(name);
  77:         }
  78:         return ((Remote)obj);
  79: }
  80: 
  81: public void bind(String name, Remote obj) throws RemoteException, AlreadyBoundException, AccessException {
  82:         if (bindings.containsKey(name)) {
  83:                 throw new AlreadyBoundException(name);
  84:         }
  85:         bindings.put(name, obj);
  86: }
  87: 
  88: public void unbind(String name) throws RemoteException, NotBoundException, AccessException {
  89:         Object obj = bindings.remove(name);
  90:         if (obj == null) {
  91:                 throw new NotBoundException(name);
  92:         }
  93: }
  94: 
  95: public void rebind(String name, Remote obj) throws RemoteException, AccessException {
  96:         bindings.put(name, obj);
  97: }
  98: 
  99: public String[] list() throws RemoteException, AccessException {
 100:         int size = bindings.size();
 101:         String[] strings = new String[size];
 102:         Enumeration e = bindings.keys();
 103:         for (int i = 0; i < size; i++) {
 104:                 strings[i] = (String)e.nextElement();
 105:         }
 106:         return (strings);
 107: }
 108: 
 109: public static void version() {
 110:         System.out.println("rmiregistry ("
 111:                            + System.getProperty("java.vm.name")
 112:                            + ") "
 113:                            + System.getProperty("java.vm.version"));
 114:         System.out.println("Copyright 2011 Free Software Foundation, Inc.");
 115:         System.out.println("This is free software; see the source for copying conditions.  There is NO");
 116:         System.out.println("warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.");
 117:         System.exit(0);
 118: }
 119: 
 120: public static void help() {
 121:         System.out.println(
 122: "Usage: rmiregistry [OPTION | PORT]\n" +
 123: "\n" +
 124: "    --help                Print this help, then exit\n" +
 125: "    --version             Print version number, then exit\n");
 126:         System.exit(0);
 127: }
 128: 
 129: public static void main(String[] args) {
 130:         int port = Registry.REGISTRY_PORT;
 131:         if (args.length > 0) {
 132:                 if (args[0].equals("--version")) {
 133:                         version();
 134:                 }
 135:                 else if (args[0].equals("--help")) {
 136:                         help();
 137:                 }
 138:                 try {
 139:                         port = Integer.parseInt(args[0]);
 140:                 }
 141:                 catch (NumberFormatException _) {
 142:                         System.err.println("Bad port number - using default");
 143:                 }
 144:         }
 145: 
 146:         try {
 147:                 Registry impl = LocateRegistry.createRegistry(port);
 148:         }
 149:         catch (RemoteException _) {
 150:                 System.err.println("Registry failed");
 151:         }
 152: }
 153: 
 154: }