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The structure of Java RMI
Brief introduction to the internal structure of Java RMI
V 0.1 © 2014 José María Foces Morán. All rights reserved
+ Java RMI needs three hosts: The Client, The Server and the Web server
V 0.1 © 2014 José María Foces Morán. All rights reserved
2
Apache2 web serverpaloalto.unileon.es
· Server program· rmiregistry· Remote Objectprotocol.unileon.es
Client hostclient.unileon.es
+ Java RMI needs three hosts: The Client, The Server and the Web server
V 0.1 © 2014 José María Foces Morán. All rights reserved
3
Apache2 web serverpaloalto.unileon.es
· Server program· rmiregistry· Remote Objectprotocol.unileon.es
Client hostclient.unileon.es
Creates and runs the remote object
+ Java RMI needs three hosts: The Client, The Server and the Web server
V 0.1 © 2014 José María Foces Morán. All rights reserved
4
Apache2 web serverpaloalto.unileon.es
· Server program· rmiregistry· Remote Objectprotocol.unileon.es
Client hostclient.unileon.es
Creates and runs the remote object
Server
+ Java RMI needs three hosts: The Client, The Server and the Web server
V 0.1 © 2014 José María Foces Morán. All rights reserved
5
Apache2 web serverpaloalto.unileon.es
· Server program· rmiregistry· Remote Objectprotocol.unileon.es
Client hostclient.unileon.es
Creates and runs the remote object
ServerRemote Object Impl
+ Java RMI needs three hosts: The Client, The Server and the Web server
V 0.1 © 2014 José María Foces Morán. All rights reserved
6
Apache2 web serverpaloalto.unileon.es
· Server program· rmiregistry· Remote Objectprotocol.unileon.es
Client hostclient.unileon.es
Creates and runs the remote object
ServerRemote Object Impl
Records remote objects names...
rmiregistry
+ Java RMI needs three hosts: The Client, The Server and the Web server
V 0.1 © 2014 José María Foces Morán. All rights reserved
7
Apache2 web serverpaloalto.unileon.es
· Server program· rmiregistry· Remote Objectprotocol.unileon.es
Client hostclient.unileon.es
Creates and runs the remote objectServer
Remote Object Impl
Records remote objects names...
rmiregistryAslan - TCP port 1234
registers new object into remiregistry
TCP port 1234
+ Java RMI needs three hosts: The Client, The Server and the Web server
V 0.1 © 2014 José María Foces Morán. All rights reserved
8
Apache2 web serverpaloalto.unileon.es
· Server program· rmiregistry· Remote Objectprotocol.unileon.es
Client hostclient.unileon.es
ServerRemote Object Impl
rmiregistryAslan - TCP port 1234
TCP port 1234
Client
+ Java RMI needs three hosts: The Client, The Server and the Web server
V 0.1 © 2014 José María Foces Morán. All rights reserved
9
Apache2 web serverpaloalto.unileon.es
· Server program· rmiregistry· Remote Objectprotocol.unileon.es
Client hostclient.unileon.es
ServerRemote Object Impl
rmiregistryAslan - TCP port 1234
TCP port 1234
Client
Lookup "Aslan" at protocol.unileon.es's rmiregistry
+ Java RMI needs three hosts: The Client, The Server and the Web server
V 0.1 © 2014 José María Foces Morán. All rights reserved
10
Apache2 web serverpaloalto.unileon.es
· Server program· rmiregistry· Remote Objectprotocol.unileon.es
Client hostclient.unileon.es
ServerRemote Object Impl
rmiregistryAslan - TCP port 1234
TCP port 1234
Client
Remote object's STUB
+ Java RMI needs three hosts: The Client, The Server and the Web server
V 0.1 © 2014 José María Foces Morán. All rights reserved
11
Apache2 web serverpaloalto.unileon.es
· Server program· rmiregistry· Remote Objectprotocol.unileon.es
Client hostclient.unileon.es
ServerRemote Object Impl
rmiregistryAslan - TCP port 1234
TCP port 1234
Client
Remote object's STUB
+ Java RMI needs three hosts: The Client, The Server and the Web server
V 0.1 © 2014 José María Foces Morán. All rights reserved
12
Apache2 web serverpaloalto.unileon.es
· Server program· rmiregistry· Remote Objectprotocol.unileon.es
Client hostclient.unileon.es
ServerRemote Object Impl
rmiregistryAslan - TCP port 1234
TCP port 1234
ClientRemote object's STUB
+ Java RMI needs three hosts: The Client, The Server and the Web server
V 0.1 © 2014 José María Foces Morán. All rights reserved
13
Apache2 web serverpaloalto.unileon.es
· Server program· rmiregistry· Remote Objectprotocol.unileon.es
Client hostclient.unileon.es
Interface class file must be
copied to the web server
ServerRemote Object Impl
rmiregistryAslan - TCP port 1234
TCP port 1234
ClientRemote object's STUB
Remote object's interface
+ Java RMI needs three hosts: The Client, The Server and the Web server
V 0.1 © 2014 José María Foces Morán. All rights reserved
14
Apache2 web serverpaloalto.unileon.es
· Server program· rmiregistry· Remote Objectprotocol.unileon.es
Client hostclient.unileon.es
ServerRemote Object Impl
rmiregistryAslan - TCP port 1234
TCP port 1234
ClientRemote object's STUB
Remote object's interface
Access interface's class filefor finishing the the Stub
+ Java RMI needs three hosts: The Client, The Server and the Web server
V 0.1 © 2014 José María Foces Morán. All rights reserved
15
Apache2 web serverpaloalto.unileon.es
· Server program· rmiregistry· Remote Objectprotocol.unileon.es
Client hostclient.unileon.es
ServerRemote Object Impl
rmiregistryAslan - TCP port 1234
TCP port 1234
ClientRemote object's STUB
Remote object's interface
Client invokes STUB methods
+ Java RMI needs three hosts: The Client, The Server and the Web server
V 0.1 © 2014 José María Foces Morán. All rights reserved
16
Apache2 web serverpaloalto.unileon.es
Client hostclient.unileon.es
ServerRemote Object Impl
TCP port 1234
ClientRemote object's STUB
Remote object's interface
STUB speaks RMI protocol with remote object
parameters
return value
