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Problem with copying from existing workflow

Added by Matthew Rupert over 13 years ago

I created a new workflow this morning but ran into a problem when I went to copy it from an existing workflow. It seems that I was getting an error because it was trying to insert a null value as the TRACKER_ID, and I'm guessing this is because the tracker wasn't yet created and yet it was trying to copy the workflow anyway.

So this query raises an error:
INSERT INTO workflows (tracker_id, role_id, old_status_id, new_status_id)
SELECT 10004, 10002, old_status_id, new_status_id
FROM workflows WHERE tracker_id = 10003 AND role_id = 10002

Or maybe its just that ID wasn't created? I'm not sure, but I got the error:

Error: ORA-01400: cannot insert NULL into ("xxxxxx"."WORKFLOWS"."ID"): INSERT INTO workflows (tracker_id, role_id, old_status_id, new_status_id) SELECT 10004, 10002, old_status_id, new_status_id FROM workflows WHERE tracker_id = 10003 AND role_id = 10002


Replies (5)

RE: Problem with copying from existing workflow - RESOLVED - Added by Matthew Rupert over 13 years ago

I'm using Oracle, which isn't supported, but still, this may be of help to some people. For whatever reason there was no trigger created (no triggers were created). I don't know enough about databases, but perhaps MySQL and Postgres don't need triggers to auto increment a sequence?

Anyway, I created a trigger and this resolved my problem:

create trigger workflows_insert_trigger
before insert on workflows for each row
begin
select workflows_seq.nextval into :new.id from dual;
end;
commit;

RE: Problem with copying from existing workflow - Added by Etienne Massip over 13 years ago

Could you add this to the Howtos page, that could be very useful ?

RE: Problem with copying from existing workflow - Added by Matthew Rupert over 13 years ago

Yep, will do. Also, I changed the trigger:

CREATE OR REPLACE TRIGGER workflows_before_insert
BEFORE INSERT
ON WORKFLOWS
FOR EACH ROW
BEGIN
if :new.id is null then
SELECT workflows_seq.nextval INTO :new.ID FROM dual;
end if;
END;
/

RE: Problem with copying from existing workflow - Added by e tec about 13 years ago

Hi,

I am also trying to get Redmine working with an Oracle Enterprise DB (11.2.0.2.0 - 64bit). I've been applying the fixes from your blog and from another users patch posted somewhere on this site. Thank you for all your tips.

When I try the above sql statement, I am getting:

Warning: Trigger created with compilation errors.

I am entering the query into sqlplus.

How would I go about troubleshooting this?

When I restart apache I am still getting an error trying to copy over a workflow.

Thanks for any help!

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