Fetch items from group based on index

[vijay chaudhary]

I have a LambdaJ group and I want to fetch the items from that group based upon the nestIndex and rowIndex.

the index pattern is

nestIndex:1 - rowIndex:0
nestIndex:1 - rowIndex:1
nestIndex:1 - rowIndex:2
nestIndex:2 - rowIndex:0
nestIndex:2 - rowIndex:1
nestIndex:1 - rowIndex:3
.
.
.
.
.
and so forth.

So whenever the nest index changes I need to fetch the row index value from the grouped value list.

Nest Index 1 suggest the top level where in case of group only the keys are fetched but when Nest index is 2,3... it goes in the value and fetch respective values.

Not sure if I explained it properly.

Let me know if you need more information.