HS VIEW Incorrect Datatype VARCHAR2 Lengths Object Type

Question

Hello,
One more question please.
I created a view in Oracle10gr2 to which pulls from an HS ODBC using a database link.
The problem is that the source database sets a particular column to VARCHAR2 (100) for a length, however the view when pulled only displays VARCHAR2(56).
Which is the actual length of the longest row of data for that column.
So this will be a problem if a row is inserted that is longer than (56) and I query the same view, I assume it will truncate.
Rather than creating an Object View and setting the lengths explicity, then calling the Object View from the View, as shown below. Is there a setting to force the view to use the columns constraints from the source??
Example using the Object View:
Creating an Object View: Example The following example shows the creation of the type inventory_typ in the oc schema, and the oc_inventories view that is based on that type:
CREATE TYPE inventory_typ
OID '82A4AF6A4CD4656DE034080020E0EE3D'
AS OBJECT
( product_id NUMBER(6)
, warehouse warehouse_typ
, quantity_on_hand NUMBER(8)
CREATE OR REPLACE VIEW oc_inventories OF inventory_typ
WITH OBJECT OID (product_id)
AS SELECT i.product_id,
warehouse_typ(w.warehouse_id, w.warehouse_name, w.location_id),
i.quantity_on_hand
FROM inventories i, warehouses w
WHERE i.warehouse_id=w.warehouse_id;
Any suggestions are appreciated.
Thanks

Answer 1

I'm not sure if it is really a good idea to store time information in a string (And why is this string 16 chars long?)
But anyway here is a sample that worked for me:
create or replace type hour as object(
  hhmmss varchar2(16),
  member function HourToSysdate return date
create or replace type body hour as
  member function HourToSysdate return date is
  begin
    return to_date(to_char(sysdate, 'dd/mm/yyyy') || ' ' || self.hhmmss , 'dd/mm/yyyy hh24:mi:ss');
  end HourToSysdate;
end;
create table labor (
id number,
hora hour
insert into labor values(1, hour('12:13:14'));
insert into labor values(2, hour('09:10:11'));
select id, to_char(hour.hourtosysdate(hora), 'DD.MM.YYYY HH24:MI:SS')
from   labor
order by id;
or
select l.id, to_char(l.hora.hourtosysdate(), 'DD.MM.YYYY HH24:MI:SS')
from   labor l
order by l.id;