i was trying to solve problem regard categorization as bellow
my category information is
Jacket jeans 3mD
jacket jeans module 3
i use SimpleFacetHandler for field name "MAIN_CAT"
but i found the facet returned by BrowseResult as below
my problem was my field posted with SimpleFacetHandler is Analyzed
it should be NOT_Analyzed from lucene Files.
Thanks you Mr.Shcherbachev for Solution :)
hope this help others. feel free for any question :)