How to validate user input field?

Question

I need to validate a user input field against a table. This field is not part of an EO but is used to update an attribute on an existing EO.
My question is, where would I place the sql that would validate the user input value against the table?
Is there an easy way to do this?
I'm at a roadblock and really need some help. Thank you.

Answer 1

You can execute a sql query or a function from <your>AMImpl.java, using normal jdbc.
but I would recommend this, it is easier and cleaner approach
1. Create a VO (<your>VO) with the sql statement
Select client
from client_table
where resp_id = :1
and client= :2
2. Add this vo to the am
3. In AMImpl, get handle to the VO (this.get<your>VO1)
4. Bind params
this.get<your>VO1().setWhereClauseParams(0,current_resp );
this.get<your>VO1().setWhereClauseParams(1,user_input_value);
5. Execute the query
this.get<your>VO1().executeQuery();
6. Get the row after the query is executed
oracle.jbo.Row <your>Row = this.get<your>VO1().first();
7. Get the value of the attribute from the row
l_client = <your>Row.getAttribute("Client") ;
8. So now you have what you wanted to do with the sql.
Thanks
Tapash