getAggregator

Returns an aggregation builder bound to this query and the filters/ constraints derived from spec. Page/pageSize are ignored — aggregations always consider the entire matching set.

Each call returns a fresh aggregator, so callers can build multiple independent chains concurrently without interference.

val total: BigDecimal? = query.getAggregator(spec)
    .sum(Order_.total)
    .execute<BigDecimal>()

val row: Map<String, Any?> = query.getAggregator(spec)
    .sum(Order_.total, "total")
    .avg(Order_.total, "average")
    .count("*", "cnt")
    .execute()