In Ibatis, how does one write a nested Iterate tag to loop through a two-dimensional array?

Question

Hi all, I was troubleshooting the following code and was unable to find an answer, so I figured I would document my solution.

The problem was:
<iterate property="twoDimArray" prepend="and (" close=")" conjunction="or"> <iterate property="twoDimArray[]" open="(" close=")" conjunction="and">
$twoDimArray[][].columnName$ = #twoDimArray[][].value#
</iterate>
</iterate>

Resulted in an error: There is no READABLE property named 'columnName' ...

Answer 1

I found that I needed to reference the second array as a property of the first:
$twoDimArray[].[].columnName$ = #twoDimArray[].[].value#