In the IndexMatcher line 30 for the LESS validation
--> if (val > rule.getIndex()) {

is the same (but different written) as line 40 for the MORE validation
--> if (rule.getIndex() < val) {
I suspect that this should be "if (val < rule.getIndex()) {"

The same error is repeated for the next section in the same class ... line 52 and 62.