Examples with AggregationProjection io.crate.planner.projection.AggregationProjection used on opensource projects

Example 1 with AggregationProjection

use of io.crate.planner.projection.AggregationProjection in project crate by crate.

the class GlobalAggregateConsumer method addAggregations.

/**
     * Add aggregation/having/topN projections to the plan.
     * Either directly or by wrapping it into a Merge plan.
     */
static Plan addAggregations(QuerySpec qs, ProjectionBuilder projectionBuilder, SplitPoints splitPoints, Planner.Context plannerContext, Plan plan) {
    ResultDescription resultDescription = plan.resultDescription();
    if (resultDescription.limit() > TopN.NO_LIMIT || resultDescription.orderBy() != null) {
        plan = Merge.ensureOnHandler(plan, plannerContext);
        resultDescription = plan.resultDescription();
    }
    WhereClause where = qs.where();
    if (where != WhereClause.MATCH_ALL) {
        FilterProjection whereFilter = ProjectionBuilder.filterProjection(splitPoints.toCollect(), where);
        plan.addProjection(whereFilter, null, null, null, null);
    }
    List<Projection> postAggregationProjections = createPostAggregationProjections(qs, splitPoints, plannerContext);
    if (ExecutionPhases.executesOnHandler(plannerContext.handlerNode(), resultDescription.nodeIds())) {
        AggregationProjection finalAggregation = projectionBuilder.aggregationProjection(splitPoints.toCollect(), splitPoints.aggregates(), Aggregation.Step.ITER, Aggregation.Step.FINAL, RowGranularity.CLUSTER);
        plan.addProjection(finalAggregation, null, null, splitPoints.aggregates().size(), null);
        for (Projection postAggregationProjection : postAggregationProjections) {
            plan.addProjection(postAggregationProjection, null, null, null, null);
        }
        return plan;
    } else {
        AggregationProjection partialAggregation = projectionBuilder.aggregationProjection(splitPoints.toCollect(), splitPoints.aggregates(), Aggregation.Step.ITER, Aggregation.Step.PARTIAL, RowGranularity.CLUSTER);
        plan.addProjection(partialAggregation, null, null, splitPoints.aggregates().size(), null);
        AggregationProjection finalAggregation = projectionBuilder.aggregationProjection(splitPoints.aggregates(), splitPoints.aggregates(), Aggregation.Step.PARTIAL, Aggregation.Step.FINAL, RowGranularity.CLUSTER);
        postAggregationProjections.add(0, finalAggregation);
    }
    return createMerge(plan, plannerContext, postAggregationProjections);
}

Example 2 with AggregationProjection

use of io.crate.planner.projection.AggregationProjection in project crate by crate.

the class GlobalAggregateConsumer method globalAggregates.

/**
     * Create a Merge(Collect) plan.
     *
     * iter->partial aggregations on use {@code projectionGranularity} granularity
     */
private static Plan globalAggregates(Functions functions, QueriedTableRelation table, ConsumerContext context, RowGranularity projectionGranularity) {
    QuerySpec querySpec = table.querySpec();
    if (querySpec.groupBy().isPresent() || !querySpec.hasAggregates()) {
        return null;
    }
    // global aggregate: collect and partial aggregate on C and final agg on H
    Planner.Context plannerContext = context.plannerContext();
    validateAggregationOutputs(table.tableRelation(), querySpec.outputs());
    ProjectionBuilder projectionBuilder = new ProjectionBuilder(functions, querySpec);
    SplitPoints splitPoints = projectionBuilder.getSplitPoints();
    AggregationProjection ap = projectionBuilder.aggregationProjection(splitPoints.leaves(), splitPoints.aggregates(), Aggregation.Step.ITER, Aggregation.Step.PARTIAL, projectionGranularity);
    RoutedCollectPhase collectPhase = RoutedCollectPhase.forQueriedTable(plannerContext, table, splitPoints.leaves(), ImmutableList.of(ap));
    Collect collect = new Collect(collectPhase, TopN.NO_LIMIT, 0, ap.outputs().size(), 1, null);
    AggregationProjection aggregationProjection = projectionBuilder.aggregationProjection(splitPoints.aggregates(), splitPoints.aggregates(), Aggregation.Step.PARTIAL, Aggregation.Step.FINAL, RowGranularity.CLUSTER);
    List<Projection> postAggregationProjections = createPostAggregationProjections(querySpec, splitPoints, plannerContext);
    postAggregationProjections.add(0, aggregationProjection);
    return createMerge(collect, plannerContext, postAggregationProjections);
}