[ http://issues.apache.org/jira/browse/DERBY-551?page=all ]
Deepa Remesh updated DERBY-551:
-------------------------------
Attachment: derby-551-patch2-v1.diff
Thanks Dan for committing patch1.
Based on Dan's suggestion, I am working on adding a check to the parser for
disallowing procedures that modify SQL data in before triggers. However, this
patch is not quite ready.
Meantime, I am attaching a follow-up patch 'derby-551-patch2-v1.diff' which
adds more comments to InternalTriggerExecutionContext.validateStatement. This
patch only adds comments and does not change any code. Please take a look at it
and commit if okay.
> 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
> Type: New Feature
> Components: SQL
> Versions: 10.1.1.0
> Environment: All platforms
> Reporter: Satheesh Bandaram
> Assignee: Deepa Remesh
> Fix For: 10.2.0.0
> Attachments: ProcedureInTrigger_Tests_v1.html, 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-551draft2.diff
>
> 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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