supply function in webdynpro for abap

[Former Member]

Hi ,

I have tree structure as below.

1.      Node A
               1.a      Node B
                   1.a.i    Node C

I have declared method 'Method_A' as supply function for Node A.similarly

I have declared method 'Method_B' as supply function for Node B.similary

I have declared method 'Method_C' as supply function for Node C.

When I am executing in debugging mode both 'Method_A' and 'Method_B' is triggering for initial display of tree. Without expanding Node A ,we are already getting the Node B data and storing in corresponding nodes. This is becoming performance issue as I am hitting database in those 3 methods. My problem is without expanding why that 'Method_B' supply function is

triggering. Please let me know if you have any idea.

Thanks,

Suma

[former_member229979 · Accepted solution]

The supply function is always get triggered even if you do not expand the parent node in tree.

Reason: It fills the value to the child node based on parent's value.

To avoid this, you can set teh condition as follows:

In node B supply function, method_B:

check the instance of parent node A here, and if that is not initial, then only hit the database for filling node B.

In node C supply function, method_C:

Check the instance of parent node B here, and if that is not initial, then only hit the database for filling node C.

This is the only possible solution one can think of.

[Former Member]

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[Former Member]

Hi suma,

Check out the cardinality of the node B.

0..N

1..N

it should be 1..N where as instance creation might be triggering the supply function in starting.

thanks,