cayenne-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Nikita Timofeev (Jira)" <j...@apache.org>
Subject [jira] [Updated] (CAY-2637) Allow forcing a custom Connection for a transaction
Date Wed, 24 Feb 2021 10:06:00 GMT

     [ https://issues.apache.org/jira/browse/CAY-2637?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Nikita Timofeev updated CAY-2637:
---------------------------------
    Fix Version/s:     (was: 4.2.M3)
                   4.2.B1

> Allow forcing a custom Connection for a transaction
> ---------------------------------------------------
>
>                 Key: CAY-2637
>                 URL: https://issues.apache.org/jira/browse/CAY-2637
>             Project: Cayenne
>          Issue Type: Task
>            Reporter: Andrus Adamchik
>            Priority: Major
>             Fix For: 4.2.B1
>
>
> Just identified a use case where Cayenne transaction management API falls short. 
> [DFLib|https://github.com/nhl/dflib] JDBCConnector allows manual transaction management.
I am using Cayenne with DFLib for a multi-step data transformation process, with multiple
commits within a transaction. Cayenne queries should be able to include intermediate results
flushed to DB (but still not committed), so they need to run over the same Connection. 
> I was able to implement a custom solution that required wrapping both DataSource and
Transaction in custom classes. I think we can simplify this for the end users. Some ideas:
> * add the ability to pass an explicit DataSource (and/or Connection) to TransactionDescriptor.
Expand ServerRuntime.performInTransaction(..) to take TransactionDescriptor (just like TransactionManager
does).
> * allow TransactionListener to provide its own connection, both in "willAddConnection"
(so it can wrap passed connection), or in a separate new method that would allow to provide
own Connection before Cayenne checks out one from its own DataSource.



--
This message was sent by Atlassian Jira
(v8.3.4#803005)

Mime
View raw message