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From "Houx Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DERBY-4443) Wrap rollback in exception handlers in try-catch
Date Wed, 23 Mar 2011 14:03:05 GMT

     [ https://issues.apache.org/jira/browse/DERBY-4443?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Houx Zhang updated DERBY-4443:
------------------------------

    Attachment: DERBY-4443-2.patch

Thanks Bryan very much!

I have tried following your advice, now, in the new patch, the MockInternalDriver can be instanced
and its connect(String url, Properties info) is called indeed, however, its super.connect(url,
info) throws a NullException. It seems this way is not OK. I still faced the same question--how
to mock a rollback as expected.

Wish for your comments! 

> Wrap rollback in exception handlers in try-catch
> ------------------------------------------------
>
>                 Key: DERBY-4443
>                 URL: https://issues.apache.org/jira/browse/DERBY-4443
>             Project: Derby
>          Issue Type: Bug
>          Components: Demos/Scripts, Documentation, Eclipse Plug-in, JDBC, Network Client,
Network Server, Replication, Services, SQL, Test, Tools
>    Affects Versions: 10.5.3.0
>            Reporter: Aaron Digulla
>              Labels: derby_triage10_8
>         Attachments: DERBY-4443-1.patch, DERBY-4443-2.patch, DERBY-4443.patch
>
>
> Avoid this pattern everywhere:
> 		}catch(SQLException se){
> 			//issue a rollback on any errors
> 			conn.rollback();
> 			throw  se;
> 		}
> because an error in rollback will shadow the original exception.

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