How to get the index of table row without selection?

Question

Hi all,
I have an table designed in XML view.Now i have added an change method for qty cell "valqty". When user inputs the qty in the cell and press enter this method is triggered now I want to know which index of the table is currently edited.Through which i can get the value of other cell in the same row.
NOTE: The table row doesn't have selection either multiple or single
I tried the following inside the valqty method but it now working
this.getValue();
this.getBindingContext().getProperty('PRD_NUM');
<Table id="idProductsTable"
inset="false"
items="{oModel>/deliverylist}"
visibleRowCount= "7"
mode="MultiSelect"
modeAnimationOn="true">
<headerToolbar>
<Toolbar>
<Label text="Products"></Label>
</Toolbar>
</headerToolbar>
<columns>
<Column
minScreenWidth="Tablet"
demandPopin="true">
<Text text="Order" />
</Column>
<Column
minScreenWidth="Tablet"
demandPopin="true">
<Text text="Quantity" />
</Column>
</columns>
<items>
<ColumnListItem>
<cells>
<Text text="{oModel>PRD_NUM}" />
<Input value="{oModel>DEL_QUAN}" change="valqty" maxLength="13"  />
</cells>
</ColumnListItem>
</items>
</Table>
Thanks

Answer 1

Thanks Robin,
But in my case oEvent.getSource() is returning the cell instance and
oEvent.getSource().getBindingContext() is undefined
Hence not getting the value
I also tried the following
oEvent.getSource().getParent().getParent().indexOfItem()
But index returned is -1