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From "Knut Anders Hatlen (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DERBY-5635) Provide implementation for getMetaData() in VTITemplate
Date Thu, 01 Mar 2012 09:49:59 GMT
Provide implementation for getMetaData() in VTITemplate

                 Key: DERBY-5635
                 URL: https://issues.apache.org/jira/browse/DERBY-5635
             Project: Derby
          Issue Type: Improvement
          Components: SQL
    Affects Versions:
            Reporter: Knut Anders Hatlen
            Assignee: Knut Anders Hatlen
            Priority: Minor

VTITemplate defines getMetaData() as an abstract method. That method doesn't appear to be
needed for user-defined table functions, so it would be good to provide a default implementation
(could just throw an exception) so that less boilerplate is needed when writing table functions.
The method does however get used by system VTIs, which is probably why it was made abstract
in the first place. The system VTIs should still override getMetaData().

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