How to map cursor data into another cursor? Android

How can I map the data present in cursorA into cursorB, being that columns from cursorA are different from cursorB?

Ex.: CursorA = {"columnA", "columnB"} | CursorB = {"cA", "cB", "cZ"}

I want that CursorB act as a facade for CursorA, so when I request, lets say, column cB from CursorB I actually access columnA from CursorA.