Accessing the data of Table and manipulating it

Question

Hi
I've a table which returns data from RFM, on the basis of data I've to get checkboxes check/unchecked.
The ModelNode is of following type:
    -0CONTEXT
     |-Model_Input
       |-EventId
       |-EventValue
Now based on the value returned by EventValue i'll check the values of 2 checkBoxes.
The context for the view is
  -0Context
   |-Z_sd_Input
   |  |-EventID
   |  |-EventValue
   |-Check1
   |-Check2
I've binded my table with EventID, EventValue, Check1 and Check2.
Now on the basis of each rows returned under the EventID & EventValue, I'll have to put the check or uncheck values in the table.
I'm using following code:
for(int i = 0;wdContext.node<model>.size();i++)
     if(wdContext.node<model_input>.getEventValue equals("2")
      wdContext.setCheck1(true);
      wdContext.setCheck2(false);
But this code is not validating the condition. and puts all the checkboxes as true and false respectively.
So for data under the EventValues have to be read and for each of them i've to give appropriate checks.. how do i do that
Say the table return looks like this:
EventId  EventVal    Check1  Check2
Volume     2          true   true
Weight     1           false  true... and so on.
Can somebody provide solution for it.
Thanks in advance
Srikant

Answer 1

If you define a calculated attribute, you get the node element containing that attribute as a parameter in the get-method.
In your example, this is an element of the value node "X" containing the calculated attributes "Check{1,2}".
To get the attribute values used to calculated the "Check{1,2}" value, you have to navigate up the context:
element: element of "X", parameter of calc. attribute get-method
element.node(): node "X"
element.node().getParentElement(): node element containing "X" (remember it's a non-singleton)
From the last node element you can get the attribute values to compute the value for the calculated attribute.
Another solution using supply functions is described in Marcin's Weblog.
Armin