Examples with SqlAggregator org.apache.druid.sql.calcite.aggregation.SqlAggregator used on opensource projects

Example 1 with SqlAggregator

use of org.apache.druid.sql.calcite.aggregation.SqlAggregator in project druid by druid-io.

the class DruidOperatorTable method lookupOperatorOverloads.

@Override
public void lookupOperatorOverloads(final SqlIdentifier opName, final SqlFunctionCategory category, final SqlSyntax syntax, final List<SqlOperator> operatorList, final SqlNameMatcher nameMatcher) {
    if (opName == null) {
        return;
    }
    if (opName.names.size() != 1) {
        return;
    }
    final OperatorKey operatorKey = OperatorKey.of(opName.getSimple(), syntax);
    final SqlAggregator aggregator = aggregators.get(operatorKey);
    if (aggregator != null) {
        operatorList.add(aggregator.calciteFunction());
    }
    final SqlOperatorConversion operatorConversion = operatorConversions.get(operatorKey);
    if (operatorConversion != null) {
        operatorList.add(operatorConversion.calciteOperator());
    }
    final SqlOperator convertletOperator = CONVERTLET_OPERATORS.get(operatorKey);
    if (convertletOperator != null) {
        operatorList.add(convertletOperator);
    }
}

Example 2 with SqlAggregator

use of org.apache.druid.sql.calcite.aggregation.SqlAggregator in project druid by druid-io.

the class DruidOperatorTable method getOperatorList.

@Override
public List<SqlOperator> getOperatorList() {
    final List<SqlOperator> retVal = new ArrayList<>();
    for (SqlAggregator aggregator : aggregators.values()) {
        retVal.add(aggregator.calciteFunction());
    }
    for (SqlOperatorConversion operatorConversion : operatorConversions.values()) {
        retVal.add(operatorConversion.calciteOperator());
    }
    retVal.addAll(DruidConvertletTable.knownOperators());
    return retVal;
}

Example 3 with SqlAggregator

use of org.apache.druid.sql.calcite.aggregation.SqlAggregator in project druid by druid-io.

the class GroupByRules method translateAggregateCall.

/**
 * Translate an AggregateCall to Druid equivalents.
 *
 * @return translated aggregation, or null if translation failed.
 */
public static Aggregation translateAggregateCall(final PlannerContext plannerContext, final RowSignature rowSignature, final VirtualColumnRegistry virtualColumnRegistry, final RexBuilder rexBuilder, final Project project, final List<Aggregation> existingAggregations, final String name, final AggregateCall call, final boolean finalizeAggregations) {
    final DimFilter filter;
    if (call.filterArg >= 0) {
        // AGG(xxx) FILTER(WHERE yyy)
        if (project == null) {
            // We need some kind of projection to support filtered aggregations.
            return null;
        }
        final RexNode expression = project.getChildExps().get(call.filterArg);
        final DimFilter nonOptimizedFilter = Expressions.toFilter(plannerContext, rowSignature, virtualColumnRegistry, expression);
        if (nonOptimizedFilter == null) {
            return null;
        } else {
            filter = Filtration.create(nonOptimizedFilter).optimizeFilterOnly(virtualColumnRegistry.getFullRowSignature()).getDimFilter();
        }
    } else {
        filter = null;
    }
    final SqlAggregator sqlAggregator = plannerContext.getOperatorTable().lookupAggregator(call.getAggregation());
    if (sqlAggregator == null) {
        return null;
    }
    // Compute existingAggregations for SqlAggregator impls that want it.
    final List<Aggregation> existingAggregationsWithSameFilter = new ArrayList<>();
    for (Aggregation existingAggregation : existingAggregations) {
        if (filter == null) {
            final boolean doesMatch = existingAggregation.getAggregatorFactories().stream().noneMatch(factory -> factory instanceof FilteredAggregatorFactory);
            if (doesMatch) {
                existingAggregationsWithSameFilter.add(existingAggregation);
            }
        } else {
            final boolean doesMatch = existingAggregation.getAggregatorFactories().stream().allMatch(factory -> factory instanceof FilteredAggregatorFactory && ((FilteredAggregatorFactory) factory).getFilter().equals(filter));
            if (doesMatch) {
                existingAggregationsWithSameFilter.add(Aggregation.create(existingAggregation.getAggregatorFactories().stream().map(factory -> ((FilteredAggregatorFactory) factory).getAggregator()).collect(Collectors.toList()), existingAggregation.getPostAggregator()));
            }
        }
    }
    final Aggregation retVal = sqlAggregator.toDruidAggregation(plannerContext, rowSignature, virtualColumnRegistry, rexBuilder, name, call, project, existingAggregationsWithSameFilter, finalizeAggregations);
    if (retVal == null) {
        return null;
    } else {
        // Check if this refers to the existingAggregationsWithSameFilter. If so, no need to apply the filter.
        if (isUsingExistingAggregation(retVal, existingAggregationsWithSameFilter)) {
            return retVal;
        } else {
            return retVal.filter(rowSignature, virtualColumnRegistry, filter);
        }
    }
}