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Posted to derby-dev@db.apache.org by "Kim Haase (JIRA)" <ji...@apache.org> on 2015/01/22 15:15:34 UTC
[jira] [Commented] (DERBY-3005) Document possibility to specify
method signature in EXTERNAL NAME when creating a procedure/function
[ https://issues.apache.org/jira/browse/DERBY-3005?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14287478#comment-14287478 ]
Kim Haase commented on DERBY-3005:
----------------------------------
Thanks for picking this up, Myrna! The patch looks excellent to me (though I expect you would welcome a technical review as well).
Just a couple of quibbles:
In the added description, "Java" should be capitalized.
In the added example, there's an extra space between "value" and "FLOAT" in the parameter list.
> Document possibility to specify method signature in EXTERNAL NAME when creating a procedure/function
> ----------------------------------------------------------------------------------------------------
>
> Key: DERBY-3005
> URL: https://issues.apache.org/jira/browse/DERBY-3005
> Project: Derby
> Issue Type: Improvement
> Components: Documentation
> Affects Versions: 10.4.1.3
> Reporter: Kristian Waagan
> Assignee: Myrna van Lunteren
> Attachments: DERBY-3005.diff, rrefsqljexternalname.html
>
>
> In some cases it might be necessary to specify the method signature of the external method used as a function or procedure in Derby (using CREATE FUNCTION or CREATE PROCEDURE).
> This possibility is not documented in the manuals, but there is an entry in the FAQ (http://db.apache.org/derby/faq.html#null_args):
> Either declare the function with RETURNS NULL ON NULL INPUT or define the Java method signature in the external name clause. See the "Create function problem" derby-user mail list topic.
> The mail thread: http://mail-archives.apache.org/mod_mbox/db-derby-user/200602.mbox/%3c4404E53D.1050605@apache.org%3e
> The relevant sections in the manuals should be updated to describe the feature.
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