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Re: Is it possible to use JPA and JDBC at the same time

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On Friday 14 Aug 2015 02:21 CEST, Arne Vajhøj wrote:

> On 8/13/2015 2:14 PM, Cecil Westerhof wrote:
>> I am new to JPA and have to migrate an application from JDBC to
>> JPA. There are quite some queries. Would it be possible to mix JDBC
>> and JPA together?
>>
>> I would suppose not, but if it was possible, that would circumvent
>> a big bang.
>
> The standard problems with using two persistence frameworks are
> cache inconsistencies and transactional issues.
>
> I have not read the fine print in the JPA specs to say whether
> this would be a problem for JPA and JDBC.
>
> But I would probably go for big bang JPA. Lower risk. And
> with createNativeQuery you can execute SQL queries (so you
> can reuse you existent SQL queries).

I was afraid for that. ;-) There are a lot of queries. :-( But for
testing purposes I could maybe do it class by class.

-- 
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof

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Thread

Is it possible to use JPA and JDBC at the same time Cecil Westerhof <Cecil@decebal.nl> - 2015-08-13 20:14 +0200
  Re: Is it possible to use JPA and JDBC at the same time Arne Vajhøj <arne@vajhoej.dk> - 2015-08-13 20:21 -0400
    Re: Is it possible to use JPA and JDBC at the same time Cecil Westerhof <Cecil@decebal.nl> - 2015-08-17 08:24 +0200
      Re: Is it possible to use JPA and JDBC at the same time Arne Vajhøj <arne@vajhoej.dk> - 2015-08-17 19:43 -0400
        Re: Is it possible to use JPA and JDBC at the same time Cecil Westerhof <Cecil@decebal.nl> - 2015-08-19 11:57 +0200

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