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JPA build entity manager with a specific JDBC connection instance [message #532807]

Tue, 11 May 2010 09:42

Ali Afroozeh

Messages: 2
Registered: May 2010

Junior Member

I want to manage the database connection outside entity manager context so that I can use it for different entity managers. The question is how can I build the entity manager factory or entity manager with my own connection instead of providing it with properties in persistence.xml?

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Re: JPA build entity manager with a specific JDBC connection instance [message #533353 is a reply to message #532807]

Thu, 13 May 2010 13:48

James Sutherland

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

Senior Member

Using the same JDBC connection for multiple EntityManager does not sound like a good idea. What are you trying to accomplish?

If you use JTA, then all JDBC access in the same JTA transaction will use the same JDBC connection.

You can set the connection in an EntityManager but accessing its ClientSession and setting the writeConnection's connection.

You could also try customizing your own ConnectionPool in your ServerSession.

James : Wiki : Book : Blog : Twitter

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