Query from a NTB item to retreive data block

Question

I have two NTB text items. first i have enter values in, then i would like to take these values to query my block (table view)
the context of my form is:
Office{ salesmen---->{Agencies---->{customers and so one.
in my form I would like to allow to the user to enter the office code (from listArea) and choose the salesman code(from a LOV). (this part i got it).
From both values office code and salesman code I want to retreive all agencies, customers products and display them on my block.
the second is:
If i can do that, i would like to put a checkbox(table view) in front each row, so when i'll check a row I could take some values and query another table to display a detail form on new canva for this row.
I know I ask a lot, but you know i'm new in the oracle world
thanks

Answer 1

For your first requirement: Use a Pre-Query trigger to test if your Non-Base Table (NBT) items have values. If yes - use the SET_BLOCK_PROPERTY() built-in to add the values of these items to the default where clause of the base table block. For example:
/** Pre-Query trigger */
DECLARE
   vDefWhere      VARCHAR2(500) := GET_BLOCK_PROPERTY('PARENT_BLOCK',DEFAULT_WHERE);
BEGIN
   IF ( :Control_block.C$Office_code name IS NOT NULL ) THEN
      /* Assumes there is an existing WHERE Clause */
      vDefWhere := vDefWhere|| ' AND OFFICE_CODE = :control_block.c$office_code';
   END IF;
   IF ( :Control_block.C$Sales_code IS NOT NULL ) THEN
      vDefWhere := vDefWhere||' AND SALES_CODE = :control_block.c$sales_code';
   END IF;
END;As to the your second request, why not design your form so you have a section where you select your criteria, a section that displays the queries Parent record and then a section that displays the related Child data. Then create a relationship (see the relationship code of the BLOCK in the Forms Navigator) between the Parent block and the Child block. The relationship will handle synchronizing the Child block with the Parent block as the user navigates through the different Parent records. Your form would like something like this:
|---------------------------------------------------|
|  Office Code[       ]  Sales Code[       ]        |
|                                                   |
|--Parent Data--------------------------------------|
| Office Code  Sales Code  Item1   Item2   Item3    |
| [          ] [         ] [     ] [     ] [     ] ^|
| [          ] [         ] [     ] [     ] [     ] v|
|                                                   |
|----Child Data-------------------------------------|
|                                                   |
| Child1          Child2      Child3      Child4    |
| [             ] [         ] [         ] [     ] ^ |
| [             ] [         ] [         ] [     ]   |
| [             ] [         ] [         ] [     ]   |
| [             ] [         ] [         ] [     ]   |
| [             ] [         ] [         ] [     ] v |
|---------------------------------------------------|When the user selects an Office and Sales Code - the Parent record will be queried. The relationship will automatically query the child records and display the results in the Child Data section of the form. If the user selects the second Parent record the relationship automatically queries the child records and displays them in the Child Data section again. This makes for an easier form to develop and maintain.
Hope this helps.
Craig...
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