Facet for more than one column (but not for whole table)

Question

Hi all.
Let's imagine we have dataTable with five columns. We can set facet (i.e. header) for the columns altogether or for each of them separetely. But is there any way to set header for only first three of them? like this:
____some header ____ | header | header |
value 1 | value 2 | value 3 | value 4 | value 5 |
value 6 | value 7 | value 8 | value 9 | value 10 |
Any help is appreciated.

Answer 1

This might not be the best approach if the file is huge, but if you nest the comparators, you can do this.
Create a comparator that takes 2 other comparators as input, the primary and seconday. The compare method compares the inputs based on the primary comparator. If the result is not zero, then you have your answer. If the result is 0, then delegate to the secondary comparator. In the past I've created an abstract class to do the primary/secondary behavior, then had an abstract doCompare method that does the actual comparison. The secondary comparator can itself be a nested comparator, if necessary.
john