Examples with AbstractJoinNode com.facebook.presto.sql.planner.plan.AbstractJoinNode used on opensource projects

Example 1 with AbstractJoinNode

use of com.facebook.presto.sql.planner.plan.AbstractJoinNode in project presto by prestodb.

the class LocalDynamicFilter method create.

public static Optional<LocalDynamicFilter> create(AbstractJoinNode planNode, int partitionCount) {
    Set<String> joinDynamicFilters = planNode.getDynamicFilters().keySet();
    List<FilterNode> filterNodes = PlanNodeSearcher.searchFrom(planNode.getProbe()).where(LocalDynamicFilter::isFilterAboveTableScan).findAll();
    // Mapping from probe-side dynamic filters' IDs to their matching probe variables.
    ImmutableMultimap.Builder<String, DynamicFilterPlaceholder> probeVariablesBuilder = ImmutableMultimap.builder();
    for (FilterNode filterNode : filterNodes) {
        DynamicFilterExtractResult extractResult = extractDynamicFilters(filterNode.getPredicate());
        for (DynamicFilterPlaceholder placeholder : extractResult.getDynamicConjuncts()) {
            if (placeholder.getInput() instanceof VariableReferenceExpression) {
                // Add descriptors that match the local dynamic filter (from the current join node).
                if (joinDynamicFilters.contains(placeholder.getId())) {
                    probeVariablesBuilder.put(placeholder.getId(), placeholder);
                }
            }
        }
    }
    Multimap<String, DynamicFilterPlaceholder> probeVariables = probeVariablesBuilder.build();
    PlanNode buildNode = planNode.getBuild();
    Map<String, Integer> buildChannels = planNode.getDynamicFilters().entrySet().stream().filter(entry -> probeVariables.containsKey(entry.getKey())).collect(toMap(// Dynamic filter ID
    Map.Entry::getKey, // Build-side channel index
    entry -> {
        VariableReferenceExpression buildVariable = entry.getValue();
        int buildChannelIndex = buildNode.getOutputVariables().indexOf(buildVariable);
        verify(buildChannelIndex >= 0);
        return buildChannelIndex;
    }));
    if (buildChannels.isEmpty()) {
        return Optional.empty();
    }
    return Optional.of(new LocalDynamicFilter(probeVariables, buildChannels, partitionCount));
}