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From "Houx Zhang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4443) Wrap rollback in exception handlers in try-catch
Date Sat, 19 Mar 2011 14:44:29 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4443?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13008780#comment-13008780
] 

Houx Zhang commented on DERBY-4443:
-----------------------------------

Yes, Aaron, I have seen the static variable set in the constructor of InternalDriver in the
prospective of debugging when Driver40 is installed. As I'm not familiar with DERBY, could
you tell me how to "call new on your version", please?  That is, how to install my mocking
subclass of  InternalDriver in my testing.

Thanks very much!

> 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.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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