private ConceptGroupGenerator makeGenerator(int group) throws Exception {
int shift, index;
if (group > 0) {
index = _base + _offsets.at(group - 1);
shift = _maxConcepts.at(group - 1);
} else {
index = _base;
shift = 0;
}
// initialize generator
ConceptGroupGenerator gen = new ConceptGroupGenerator(_data, index, _kTable.at(2 * group + 1));
// decode concept table
_nConcepts = gen.decodeConcepts(_kTable.at(2 * group), shift, _concepts);
if (group < _limit) _max = _concepts[_nConcepts] = _maxConcepts.at(group);
else _max = _concepts[_nConcepts - 1];
_genHeap.addGenerator(gen);
_startingIndex = 0; // in _concepts; lower search index
return gen;
}
