Eclipse Community Forums: EclipseLink » Best approach for multiple RCP applications using same networked database

Home » Eclipse Projects » EclipseLink » Best approach for multiple RCP applications using same networked database(With one networked database and multiple RCP application clients, how to use JPA?)

Show: Today's Messages :: Show Polls :: Message Navigator

Best approach for multiple RCP applications using same networked database [message #835237]

Tue, 03 April 2012 00:32

John Steele

Messages: 49
Registered: January 2010

Member

I'm creating an Eclipse RCP application that will run on multiple computers and interact with a shared networked database. When using EclipseLink, how do you manage EntityManagers for each of the clients, and how do other clients get informed of changes in other persistence contexts?

I've thought about using web services or RMI, but I would think there's a more elegant approach. Eeach client needs to somehow get an EntityManager. I was thinking of having a headless client that would interact with all the clients and do the actual persisting.

I appreciate your thought, ideas, and feedback. Please point me in the direction of articles you know about that discuss this topic.

Thanks
John Steele

Report message to a moderator

Re: Best approach for multiple RCP applications using same networked database [message #841647 is a reply to message #835237]

Wed, 11 April 2012 15:30

James Sutherland

Messages: 1939
Registered: July 2009
Location: Ottawa, Canada

Senior Member

Either each client accesses the database directly, and either does not use caching, or make use of invalidation, refreshing, database events, cache coordination, or other mechanisms.

Or, you have a three tier architecture with each client accessing a server which accesses the database. The client would still not use caching, but the server could.

James : Wiki : Book : Blog : Twitter

Report message to a moderator

Previous Topic:	JPA Query Paging : Query.setFirstResult(), Query.setMaxResults()
Next Topic:	getOldValue not exists in Interface ChangeRecord

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Mon Mar 02 23:25:33 GMT 2015

.:: Contact :: Home ::.