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Microcap & Penny Stocks : Patriot Scientific - PTSC
PTSC 0.4980.0%Jan 8 4:00 PM EST
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To: Urlman who wrote (6403)5/2/1999 6:48:00 PM
From: Urlman  Read Replies (1) of 8581
 
>>>Java code doesn't have to be loaded until it is called if packaged
in a smart way. A Jini Printer could therefor be implemented to
support many protocols in one 'object'. This would also utilize
the search mechanisms of Jini effeciently.

A Jini service object may implement several subservices (i.e.
typically Java interfaces) to represent the complete service of a
device. The subservices may be different protocols or it may be
e.g. printer and scanner services for an MFP device. Clients
requesting print services would search for all Jini services
implementing the Jini 'printer' interface and would find all
objects implementing that Java interface. A client looking for an
MFP device would e.g. search for objects having both the printer
and the scanner interface. This makes great use of Java's multiple
interface inheritance and reflection capabilities.

I think this capability of Jini is crucial long-term for an
effecient Service Discovery protocol. I think future SLP work
(v3?) should investigate the possibility to represent composite
services. The sematics for this is not trivial. Is a device with
the 'Printer' and 'Scanner' services automatically a 'Copier'?<<<

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