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From "Deepa Remesh (JIRA)" <derby-...@db.apache.org>
Subject [jira] Resolved: (DERBY-551) Allow invoking java stored procedures from inside a trigger. Make CALL a valid statement in the trigger body.
Date Thu, 27 Jul 2006 21:55:15 GMT
     [ http://issues.apache.org/jira/browse/DERBY-551?page=all ]

Deepa Remesh resolved DERBY-551.
--------------------------------

    Resolution: Fixed

I was waiting to check if there are any suggestions to avoid addition of an extra message.
I think it is okay to keep the new message. Hence marking this issue as resolved. If we get
any ideas, we can update this later.

I have opened the following issues for the open items:
* DERBY-1602 - issue to handle case where a procedure called in trigger's action statement
can cause recursion. 
* DERBY-1551 - issue to change documentation to indicate support of this feature. 

> Allow invoking java stored procedures from inside a trigger. Make CALL a valid statement
in the trigger body.
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-551
>                 URL: http://issues.apache.org/jira/browse/DERBY-551
>             Project: Derby
>          Issue Type: New Feature
>          Components: SQL
>    Affects Versions: 10.1.1.0
>         Environment: All platforms
>            Reporter: Satheesh Bandaram
>         Assigned To: Deepa Remesh
>             Fix For: 10.2.0.0
>
>         Attachments: derby-551-draft1.diff, derby-551-draft1.status, derby-551-draft2.status,
derby-551-draft3.diff, derby-551-draft3.status, derby-551-patch1-v1.diff, derby-551-patch1-v1.status,
derby-551-patch2-v1.diff, derby-551-patch3-v1.diff, derby-551-patch3-v1.status, derby-551-patch3-v2.diff,
derby-551-patch3-v2.status, derby-551draft2.diff, ProcedureInTrigger_Tests_v1.html
>
>
> Derby currently doesn't allow CALL statement to be used in a trigger body. It would be
great to allow java stored procedure invocation inside a trigger. Since Derby doesn't have
SQL procedure language, triggers can only execute a single SQL statement. If we allow stored
procedures in triggers, it would be possible to write a trigger that involves more than just
one SQL statement. Functions are currently allowed, but they are read-only.
> I believe it is fairly easy to support this enhancement. Need good amount of testing
though.

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