Examples with SymbolUtils io.prestosql.sql.planner.SymbolUtils used on opensource projects

Example 1 with SymbolUtils

use of io.prestosql.sql.planner.SymbolUtils in project hetu-core by openlookeng.

the class SingleDistinctAggregationToGroupBy method apply.

@Override
public Result apply(AggregationNode aggregation, Captures captures, Context context) {
    List<Set<Expression>> argumentSets = extractArgumentSets(aggregation).collect(Collectors.toList());
    Set<Symbol> symbols = Iterables.getOnlyElement(argumentSets).stream().map(SymbolUtils::from).collect(Collectors.toSet());
    return Result.ofPlanNode(new AggregationNode(aggregation.getId(), new AggregationNode(context.getIdAllocator().getNextId(), aggregation.getSource(), ImmutableMap.of(), singleGroupingSet(ImmutableList.<Symbol>builder().addAll(aggregation.getGroupingKeys()).addAll(symbols).build()), ImmutableList.of(), SINGLE, Optional.empty(), Optional.empty(), aggregation.getAggregationType(), aggregation.getFinalizeSymbol()), // remove DISTINCT flag from function calls
    aggregation.getAggregations().entrySet().stream().collect(Collectors.toMap(Map.Entry::getKey, e -> removeDistinct(e.getValue()))), aggregation.getGroupingSets(), emptyList(), aggregation.getStep(), aggregation.getHashSymbol(), aggregation.getGroupIdSymbol(), aggregation.getAggregationType(), aggregation.getFinalizeSymbol()));
}