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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4610) Error attempting delete with cascade and triggers
Date Fri, 07 May 2010 22:24:49 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4610?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12865338#action_12865338
] 

Knut Anders Hatlen commented on DERBY-4610:
-------------------------------------------

Hi Glenn,

Unfortunately, the fix was too late to get into the 10.6.1.0 release candidate that's currently
being tested and voted on. So unless the current release candidate is rejected, it won't be
part of the upcoming 10.6.1 release and will have to wait to the first 10.6 maintenance release
(no plans exist for that release yet, I'm afraid).

If you're interested in testing the fix without building from source, the binaries built for
the nightly regression tests of the 10.6 branch can be found here: http://dbtg.foundry.sun.com/derby/bits/10.6/

> Error attempting delete with cascade and triggers
> -------------------------------------------------
>
>                 Key: DERBY-4610
>                 URL: https://issues.apache.org/jira/browse/DERBY-4610
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.4.1.3, 10.4.2.0, 10.5.3.0, 10.6.1.0
>         Environment: Apache Derby 10.5.3.0 and Sun JDK 1.6.0_07
>            Reporter: Eric Long
>            Assignee: Knut Anders Hatlen
>             Fix For: 10.6.1.1, 10.7.0.0
>
>         Attachments: enable_test.diff, junit.diff
>
>
> The scenario is a parent and child table with a cascade delete and triggers on both tables.
 Here are the steps to reproduce.
> First, compile TestFunctions.java and put it on the classpath:
> public class TestFunctions
> {
>    public static void test(String str)
>    {
>    }
> }
> Next, enter commands into interactive SQL:
> create table testtable (id integer, name varchar(20), primary key(id));
> create table testchild (
> id integer
> constraint fk_id references testtable on delete cascade,
> ordernum int,
> primary key(id));
> create procedure testproc (str varchar(20))
> PARAMETER STYLE JAVA LANGUAGE JAVA EXTERNAL NAME 'TestFunctions.test';
> create trigger testtabletrigger after delete on testtable referencing old as old
> for each row mode db2sql call testproc(char(old.id));
> create trigger testchildtrigger after delete on testchild referencing old as old
> for each row mode db2sql call testproc(char(old.ordernum));
> insert into testtable values (1, 'test1');
> insert into testchild values (1, 10);
> delete from testtable where id = 1;
> The expected result is that deleting a row from "testtable" will cascade the delete to
"testchild", and the triggers will be called for each delete.  The actual result is that the
delete is rolled back with the following error:
> Error: An attempt was made to put a data value of type 'java.lang.String' into a data
value of
> type 'INTEGER'.
> SQLState:  XCL12
> ErrorCode: 30000
> There are no additional entries in the derby.log after the error.  If only one trigger
is used, or if the cascade is removed, then the delete will succeed.
> This issue was found while using SymmetricDS, which uses triggers to replicate tables
between Derby databases.

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