List of values (LOV) based on PL/SQL

Question

Is it possible to create a LOV based on PL/SQL ?
I want to do this because I have at least 5 LOV based on the same query (when you are using bind variables).
This is the normal query (ex.: LOV_FREQ_CODES) :
SELECT c.code ||' - '|| c.description AS display,
c.code AS return
FROM codes c,
code_types ct
WHERE c.code_type = ct.id
AND ct.code_type_description = 'Frequency' (should be a Bind Variable)
Thx

Answer 1

Look into "Pipelined Table Functions" (http://www.oracle.com/technology/sample_code/tech/pl_sql/htdocs/x/Table_Functions_Cursor_Expressions/Pipelined_Table_Functions.htm)
Basically you have your codes tables and a function (get_code). The function is passed a parameter (bind variable). The function then fires a query using the parameter value to render rows which are "pipelined" are a return value of the function. So you LOV query would look like:
SELECT c.code ||' - '|| c.description AS display,
c.code AS return
FROM codes c, TABLE(get_code('Frequency')) ct
WHERE c.code_type = ct.idMike