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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DERBY-5868) Move java.sql.Wrapper implementations to base classes on the client
Date Fri, 20 Jul 2012 21:00:39 GMT

     [ https://issues.apache.org/jira/browse/DERBY-5868?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Knut Anders Hatlen updated DERBY-5868:
--------------------------------------

    Issue & fix info: Patch Available

Derbyall and suites.All passed on Java 5, 6 and 7 with the patch.
                
> Move java.sql.Wrapper implementations to base classes on the client
> -------------------------------------------------------------------
>
>                 Key: DERBY-5868
>                 URL: https://issues.apache.org/jira/browse/DERBY-5868
>             Project: Derby
>          Issue Type: Improvement
>          Components: JDBC
>    Affects Versions: 10.10.0.0
>            Reporter: Knut Anders Hatlen
>            Assignee: Knut Anders Hatlen
>         Attachments: derby-5868-1a.patch
>
>
> The client classes that implement java.sql.Wrapper, implement the interface in the leaf
classes instead of the base classes. This is because unwrap() has a generic signature, so
it could not be in the base classes as long as they had to be compatible with Java 1.4.
> For example, in the statement class hierarchy, we implement unwrap() in Statement40,
PreparedStatement40 and CallableStatement40. Now that we compile the client with source level
1.5, we can move the unwrap() method to the Statement class and eliminate the duplication.

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