Examples with MaxSqlAggregation com.hazelcast.jet.sql.impl.aggregate.MaxSqlAggregation used on opensource projects

Example 1 with MaxSqlAggregation

use of com.hazelcast.jet.sql.impl.aggregate.MaxSqlAggregation in project hazelcast by hazelcast.

the class AggregateAbstractPhysicalRule method aggregateOperation.

protected static AggregateOperation<?, JetSqlRow> aggregateOperation(RelDataType inputType, ImmutableBitSet groupSet, List<AggregateCall> aggregateCalls) {
    List<QueryDataType> operandTypes = OptUtils.schema(inputType).getTypes();
    List<SupplierEx<SqlAggregation>> aggregationProviders = new ArrayList<>();
    List<FunctionEx<JetSqlRow, Object>> valueProviders = new ArrayList<>();
    for (Integer groupIndex : groupSet.toList()) {
        aggregationProviders.add(ValueSqlAggregation::new);
        // getMaybeSerialized is safe for ValueAggr because it only passes the value on
        valueProviders.add(new RowGetMaybeSerializedFn(groupIndex));
    }
    for (AggregateCall aggregateCall : aggregateCalls) {
        boolean distinct = aggregateCall.isDistinct();
        List<Integer> aggregateCallArguments = aggregateCall.getArgList();
        SqlKind kind = aggregateCall.getAggregation().getKind();
        switch(kind) {
            case COUNT:
                if (distinct) {
                    int countIndex = aggregateCallArguments.get(0);
                    aggregationProviders.add(new AggregateCountSupplier(true, true));
                    // getMaybeSerialized is safe for COUNT because the aggregation only looks whether it is null or not
                    valueProviders.add(new RowGetMaybeSerializedFn(countIndex));
                } else if (aggregateCallArguments.size() == 1) {
                    int countIndex = aggregateCallArguments.get(0);
                    aggregationProviders.add(new AggregateCountSupplier(true, false));
                    valueProviders.add(new RowGetMaybeSerializedFn(countIndex));
                } else {
                    aggregationProviders.add(new AggregateCountSupplier(false, false));
                    valueProviders.add(NullFunction.INSTANCE);
                }
                break;
            case MIN:
                int minIndex = aggregateCallArguments.get(0);
                aggregationProviders.add(MinSqlAggregation::new);
                valueProviders.add(new RowGetFn(minIndex));
                break;
            case MAX:
                int maxIndex = aggregateCallArguments.get(0);
                aggregationProviders.add(MaxSqlAggregation::new);
                valueProviders.add(new RowGetFn(maxIndex));
                break;
            case SUM:
                int sumIndex = aggregateCallArguments.get(0);
                QueryDataType sumOperandType = operandTypes.get(sumIndex);
                aggregationProviders.add(new AggregateSumSupplier(distinct, sumOperandType));
                valueProviders.add(new RowGetFn(sumIndex));
                break;
            case AVG:
                int avgIndex = aggregateCallArguments.get(0);
                QueryDataType avgOperandType = operandTypes.get(avgIndex);
                aggregationProviders.add(new AggregateAvgSupplier(distinct, avgOperandType));
                valueProviders.add(new RowGetFn(avgIndex));
                break;
            default:
                throw QueryException.error("Unsupported aggregation function: " + kind);
        }
    }
    return AggregateOperation.withCreate(new AggregateCreateSupplier(aggregationProviders)).andAccumulate(new AggregateAccumulateFunction(valueProviders)).andCombine(AggregateCombineFunction.INSTANCE).andExportFinish(AggregateExportFinishFunction.INSTANCE);
}