Multi Row Madness: Insert?

Question

Hey Guys,
I've been hitting my head against a cobbled wall trying to figure this one out.
I'm creating a form that needs to support versioning - so instead of ever using an update the form always inserts a copy of the data into the database with an incremented version number.
Frustratingly enough the form requires a dynamic amount of parts - best editting and represented but a tabular form. But MRU and MRD.... where is Multi-Row Insert?
I've tried everything i can to load the information and then change the version - but doing this will result in a ORA-20001: Error in MRU as the data in database is different and cannot "update" the row for old records (when i just want it to copy with a new version number).
The tables work with a header table that had id and version attributes making a combined pk, and the parts table with id and version which references the header table, and a parts_id to uniquely identify itself.
Is there any suggestions on this issue? I was thinking about adding an extra value and adding a trigger to do the inserting instead - but i fear this approach may change the information in the current version (i'm not that familiar with oracle databases... so prefer to try to find a solution in apex).
I'm using 2.2.
cheers,
Alex

Answer 1

But MRU and MRD.... where is Multi-Row Insert?
The MRU process does an update for existing rows and insert for new rows (that were added using the Add Row button)
I was thinking about adding an extra value and adding a trigger to do the inserting instead
Yes, a row-level trigger on the underlying table would be the best way to approach this problem. Let the APEX MRU and MRD processes do their job and your row-level trigger can keep inserting rows into a separate audit/history table with structure identical to the main table (plus sequence generated version number).
Something like
create table mytable_hist as select 'U' dml_action, 1 version_no,a.* from mytable a where 1=2;
create or replace trigger mytrig
after insert or update or delete on mytable
for each row
declare
l_action varchar2(1);
begin
  if inserting then l_action := 'I';
  elsif updating then l_action := 'U';
  elsif deleting then l_action := 'D';
  end if;
  insert into mytable_hist
  values
  l_action,
  version_no_seq.nextval,
  nvl(:new.col1,:old.col1), 
  nvl(:new.col2,:old.col2), 
  nvl(:new.col3,:old.col3), 
end;
/