private List<Pair<byte[], byte[]>> buildFuzzyKeys(Map<TblColRef, Set<String>> fuzzyValueSet) {
ArrayList<Pair<byte[], byte[]>> result = new ArrayList<Pair<byte[], byte[]>>();
// debug/profiling purpose
if (BackdoorToggles.getDisableFuzzyKey()) {
logger.info("The execution of this query will not use fuzzy key");
return result;
}
FuzzyKeyEncoder fuzzyKeyEncoder = new FuzzyKeyEncoder(cubeSeg, cuboid);
FuzzyMaskEncoder fuzzyMaskEncoder = new FuzzyMaskEncoder(cubeSeg, cuboid);
List<Map<TblColRef, String>> fuzzyValues =
FuzzyValueCombination.calculate(fuzzyValueSet, FUZZY_VALUE_CAP);
for (Map<TblColRef, String> fuzzyValue : fuzzyValues) {
result.add(
new Pair<byte[], byte[]>(
fuzzyKeyEncoder.encode(fuzzyValue), fuzzyMaskEncoder.encode(fuzzyValue)));
}
return result;
}
