StrataFrame Forum » StrataFrame Application Framework - V1 » Business Objects and Data Access (How do I?) » Parent BO method that need to access child BO

Parent BO method that need to access child BO

Chan — Mon, 19 Feb 2007 11:19:03 GMT

Hi,
I want to create public method to calculate order total in OrderBO. It will sum up line items subtotal by loop thru LineItemsBO datarows. The method will be called before OrderBO.beforesave() event.

My problem is, how could I access child BO - LineItemsBO in OrderBO? I can't set LineItemsBO to ParentBusinessObject property at OrderBO component designer.

Any ideas?

Thank you

RE: Parent BO method that need to access child BO

Greg McGuffey — Mon, 19 Feb 2007 11:19:03 GMT

Since the OrderBO is the parent of the LineItemBO (many lines items belong to an order), you'd set the parent relationship of LineItemBo to be an OrderBO in the LineItemBO designer. Then when using instances of these, you'd set the parent BO of a line item to the specific instance of the OrderBO. However, I pretty sure there isn't a way to set a child BO in the parent. However, you could create a custom property in the OrderBO:

Private _itemsBO as LineItemBO
Public Property ItemsBO() As LineItemBO
Get
Return _itemsBO
End Get
Set(value as LineItemBO)
_itemsBO
End Set
End Property

This should show up on the properties window of your BO. Then you can set it and use it in your method. I hope I've understood the problem and that this is helpful.

RE: Parent BO method that need to access child BO

Chan — Mon, 19 Feb 2007 11:09:15 GMT

Any feedback on this?

Thank you