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From "Deepa Remesh (JIRA)" <derby-...@db.apache.org>
Subject [jira] Commented: (DERBY-498) Result set holdability defined inside stored procedures is ignored by server/client
Date Thu, 20 Oct 2005 14:30:26 GMT
    [ http://issues.apache.org/jira/browse/DERBY-498?page=comments#action_12332594 ] 

Deepa Remesh commented on DERBY-498:
------------------------------------

I merged this patch to my 10.1 codeline and ran derbyall with Sun jdk 1.4.2 on Windows XP.
2 tests failed. Failures are not related to this change.
derbyall/derbyall.fail:lang/ConcurrentImplicitCreateSchema.java (I ran this test again and
it passed)
derbyall/derbyall.fail:i18n/iepnegativetests_ES.sql (master update)

The merge command is:
svn merge -r 326717:326718 https://svn.apache.org/repos/asf/db/derby/code/trunk

If someone could commit this to 10.1 branch, it would be great. Thanks

> Result set holdability defined inside stored procedures is ignored by server/client
> -----------------------------------------------------------------------------------
>
>          Key: DERBY-498
>          URL: http://issues.apache.org/jira/browse/DERBY-498
>      Project: Derby
>         Type: Bug
>   Components: Network Client, Network Server
>     Versions: 10.1.2.0, 10.2.0.0
>     Reporter: A B
>     Assignee: Deepa Remesh
>      Fix For: 10.2.0.0, 10.1.2.0
>  Attachments: d498.java, derby-498.diff, derby-498.status, xa_proc_test.diff, xa_proc_test.status
>
> Assume I have a Java stored procedure that returns one or more result sets, and the holdability
of those result sets is specified as part of the createStatement() method within the procedure
definition (see below for an example).
> If I execute this procedure against Derby embedded, the holdability of each result set
matches that of the statement-specific holdability that is defined within the stored procedure.
 However, if I run the procedure against the Network Server using the Derby client, the holdability
of _all_ result sets is the same, and it is based on the holdability of the statement that
_executed_ the procedure--i.e. the statement-specific holdability that is defined within the
procedure is ignored.
> Ex: If I create a stored procedure that corresponds to the following method:
> public static void p2(ResultSet[] rs1, ResultSet[] rs2,
>     ResultSet[] rs3) throws Exception
> {
>     Connection conn = DriverManager.getConnection(
>         "jdbc:default:connection");
>     Statement st1 = conn.createStatement(
>         ResultSet.TYPE_FORWARD_ONLY,
>         ResultSet.CONCUR_READ_ONLY,
>         ResultSet.HOLD_CURSORS_OVER_COMMIT);
>     rs1[0] = st1.executeQuery("select * from testtable1");
>     Statement st2 = conn.createStatement(
>         ResultSet.TYPE_FORWARD_ONLY,
>         ResultSet.CONCUR_READ_ONLY,
>         ResultSet.CLOSE_CURSORS_AT_COMMIT);
>     rs2[0] = st2.executeQuery("select * from testtable2");
>     Statement st3 = conn.createStatement(
>         ResultSet.TYPE_FORWARD_ONLY,
>         ResultSet.CONCUR_READ_ONLY,
>         ResultSet.HOLD_CURSORS_OVER_COMMIT);
>     rs3[0] = st3.executeQuery("select * from testtable3");
>     return;
>     }
> }
> Then with Derby embedded, if I have a JDBC Statement that executes a call to this procedure,
rs1 and rs3 will behave with HOLD_CURSORS holdability and rs2 will behave with CLOSE_CURSORS
holdability--and that will be the case regardless of the holdability on the Statement that
executed the call.  That seems correct to me.
> But if I do the same thing with Network Server, all of the result sets (rs1, rs2, and
rs3) will have the same holdability as the JDBC Statement that executed the call.  It doesn't
matter what the holdabilities used within the procedure definition are: they will all be over-ridden
by the holdability of the Statement that made the call.

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