public Stats(List<AggregationField> fields, List<String> clause) {
this.EMPTY_KEY = new ArrayList<Object>(0);
this.clauses = clause;
this.clauseCount = clauses.size();
this.useClause = clauseCount > 0;
this.fields = fields;
this.funcs = new AggregationFunction[fields.size()];
this.fieldOrder = new ArrayList<String>(clauses);
// prepare template functions
for (int i = 0; i < fields.size(); i++) {
AggregationField f = fields.get(i);
this.funcs[i] = f.getFunction();
this.fieldOrder.add(f.getName());
}
}
