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Detect changed context is just ...

See original GitHub issue

https://github.com/Microsoft/mssql-jdbc/blob/e0e70a429aa6f84d151e5a18aef8b92f3337e269/src/main/java/com/microsoft/sqlserver/jdbc/SQLServerStatement.java#L806

+@brettwooldridge to keep me honest.

The checkIfContextChanged method in SQLServerStatement has a bunch of issues. My understanding is that this was added to handle the case where prepared handles cannot be re-used because the server context has changed. However, first off the implementation is very flaky, for ex. if I have a stored procedure called AddUser it will be detected as a context change. This also adds a bunch of overhead in terms of string manipulation & comparison with very little gain (most of the time the context will not have changed).

The previous implementation (that I did) attempted to re-create the handle if the context changed. There are pros and cons here, but I think that or simply throwing an error are the only reasonable alternatives. IMHO, the cons against this current approach are:

Not guaranteed to work, driver will not have the context and logic of the server to be accurate
Adds a bunch of overhead for a fairly edge case scenario

Thoughts? /Tobias

Issue Analytics

State:
Created 6 years ago
Comments:21 (20 by maintainers)

Top GitHub Comments

1reaction

TobiasSQLcommented, Feb 1, 2018

Thanks @v-afrafi , submitted one comment. Thanks for the quick turn around!

0reactions

cheenamalhotracommented, Feb 16, 2018

Closing issue as requested changes merged to driver.

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