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From José Ventura <st.ne...@gmail.com>
Subject Re: JPA required?
Date Wed, 13 Feb 2013 16:22:37 GMT
Just a quick tip: Derby's documentation includes examples and tutorials
that do not use JPA. Start here and work your way through Activities 3 and
4:

http://db.apache.org/derby/docs/10.9/getstart/index.html

Hope that helps.


On Wed, Feb 13, 2013 at 2:13 PM, Bergquist, Brett <BBergquist@canoga.com>wrote:

> For your use case, probably not.   JPA is not something that is going to
> solve a database element corruption and in fact with JPA and its normal
> use, you have less control when entity changes are flushed to the database.
>
> Note that if you don't have your database stored on medium that has write
> caching, if the host computer goes down, the database is not going to be
> corrupt; it might not have the latest change, but it will be consistent if
> you are using transactions.
>
> -----Original Message-----
> From: JimCrowell37 [mailto:JimCrowell@EMail.com]
> Sent: Tuesday, February 12, 2013 4:52 PM
> To: derby-user@db.apache.org
> Subject: JPA required?
>
> Hello,
>
> I have spent today reading up on JPA and I have a question if I really
> need it.
>
> I have a data entry form class where each data entry field is associated
> with an element of a Derby dynamic database table. As each data entry field
> looses it's form focus, I shall write the entered data entry value to the
> Database table. The Database table primary key is the fields row / column
> indices.
>
> Since my goal is to save all data entries in a persistent manner, my
> question is do I need to implement JPA?
>
> I think that the worst case scenario is that my end users host computer
> goes down sometime during the Database write processing and that Database
> element may be corrupted.
>
> That thought is what led me to learning about JPA to persist the Database
> transaction.
>
> Do I need to implement JPA or is there a better way to achieve my
> persistence goal?
>
> Regards,
> Jim...
>
>
>
> --
> View this message in context:
> http://apache-database.10148.n7.nabble.com/JPA-required-tp127242.html
> Sent from the Apache Derby Users mailing list archive at Nabble.com.
>
>
>

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