Examples with Type io.trino.spi.type.Type used on opensource projects

Example 46 with Type

use of io.trino.spi.type.Type in project trino by trinodb.

the class ExpressionAnalyzer method getExpressionType.

private Type getExpressionType(Expression expression) {
    requireNonNull(expression, "expression cannot be null");
    Type type = expressionTypes.get(NodeRef.of(expression));
    checkState(type != null, "Expression not yet analyzed: %s", expression);
    return type;
}

Example 47 with Type

use of io.trino.spi.type.Type in project trino by trinodb.

the class ExpressionUtils method constantExpressionEvaluatesSuccessfully.

private static boolean constantExpressionEvaluatesSuccessfully(PlannerContext plannerContext, Session session, Expression constantExpression) {
    Map<NodeRef<Expression>, Type> types = getExpressionTypes(plannerContext, session, constantExpression, TypeProvider.empty());
    ExpressionInterpreter interpreter = new ExpressionInterpreter(constantExpression, plannerContext, session, types);
    Object literalValue = interpreter.optimize(NoOpSymbolResolver.INSTANCE);
    return !(literalValue instanceof Expression);
}

Example 48 with Type

use of io.trino.spi.type.Type in project trino by trinodb.

the class Analysis method getType.

public Type getType(Expression expression) {
    Type type = types.get(NodeRef.of(expression));
    checkArgument(type != null, "Expression not analyzed: %s", expression);
    return type;
}

Example 49 with Type

use of io.trino.spi.type.Type in project trino by trinodb.

the class PushPartialAggregationThroughExchange method split.

private PlanNode split(AggregationNode node, Context context) {
    // otherwise, add a partial and final with an exchange in between
    Map<Symbol, AggregationNode.Aggregation> intermediateAggregation = new HashMap<>();
    Map<Symbol, AggregationNode.Aggregation> finalAggregation = new HashMap<>();
    for (Map.Entry<Symbol, AggregationNode.Aggregation> entry : node.getAggregations().entrySet()) {
        AggregationNode.Aggregation originalAggregation = entry.getValue();
        ResolvedFunction resolvedFunction = originalAggregation.getResolvedFunction();
        AggregationFunctionMetadata functionMetadata = plannerContext.getMetadata().getAggregationFunctionMetadata(resolvedFunction);
        List<Type> intermediateTypes = functionMetadata.getIntermediateTypes().stream().map(plannerContext.getTypeManager()::getType).collect(toImmutableList());
        Type intermediateType = intermediateTypes.size() == 1 ? intermediateTypes.get(0) : RowType.anonymous(intermediateTypes);
        Symbol intermediateSymbol = context.getSymbolAllocator().newSymbol(resolvedFunction.getSignature().getName(), intermediateType);
        checkState(originalAggregation.getOrderingScheme().isEmpty(), "Aggregate with ORDER BY does not support partial aggregation");
        intermediateAggregation.put(intermediateSymbol, new AggregationNode.Aggregation(resolvedFunction, originalAggregation.getArguments(), originalAggregation.isDistinct(), originalAggregation.getFilter(), originalAggregation.getOrderingScheme(), originalAggregation.getMask()));
        // rewrite final aggregation in terms of intermediate function
        finalAggregation.put(entry.getKey(), new AggregationNode.Aggregation(resolvedFunction, ImmutableList.<Expression>builder().add(intermediateSymbol.toSymbolReference()).addAll(originalAggregation.getArguments().stream().filter(LambdaExpression.class::isInstance).collect(toImmutableList())).build(), false, Optional.empty(), Optional.empty(), Optional.empty()));
    }
    PlanNode partial = new AggregationNode(context.getIdAllocator().getNextId(), node.getSource(), intermediateAggregation, node.getGroupingSets(), // through the exchange may or may not preserve these properties. Hence, it is safest to drop preGroupedSymbols here.
    ImmutableList.of(), PARTIAL, node.getHashSymbol(), node.getGroupIdSymbol());
    return new AggregationNode(node.getId(), partial, finalAggregation, node.getGroupingSets(), // through the exchange may or may not preserve these properties. Hence, it is safest to drop preGroupedSymbols here.
    ImmutableList.of(), FINAL, node.getHashSymbol(), node.getGroupIdSymbol());
}

Example 50 with Type

use of io.trino.spi.type.Type in project trino by trinodb.

the class PushPredicateIntoTableScan method pushFilterIntoTableScan.

public static Optional<PlanNode> pushFilterIntoTableScan(FilterNode filterNode, TableScanNode node, boolean pruneWithPredicateExpression, Session session, SymbolAllocator symbolAllocator, PlannerContext plannerContext, TypeAnalyzer typeAnalyzer, StatsProvider statsProvider, DomainTranslator domainTranslator) {
    if (!isAllowPushdownIntoConnectors(session)) {
        return Optional.empty();
    }
    SplitExpression splitExpression = splitExpression(plannerContext, filterNode.getPredicate());
    DomainTranslator.ExtractionResult decomposedPredicate = DomainTranslator.getExtractionResult(plannerContext, session, splitExpression.getDeterministicPredicate(), symbolAllocator.getTypes());
    TupleDomain<ColumnHandle> newDomain = decomposedPredicate.getTupleDomain().transformKeys(node.getAssignments()::get).intersect(node.getEnforcedConstraint());
    Map<NodeRef<Expression>, Type> remainingExpressionTypes = typeAnalyzer.getTypes(session, symbolAllocator.getTypes(), decomposedPredicate.getRemainingExpression());
    Optional<ConnectorExpression> connectorExpression = new ConnectorExpressionTranslator.SqlToConnectorExpressionTranslator(session, remainingExpressionTypes, plannerContext).process(decomposedPredicate.getRemainingExpression());
    Map<String, ColumnHandle> connectorExpressionAssignments = connectorExpression.map(ignored -> node.getAssignments().entrySet().stream().collect(toImmutableMap(entry -> entry.getKey().getName(), Map.Entry::getValue))).orElse(ImmutableMap.of());
    Map<ColumnHandle, Symbol> assignments = ImmutableBiMap.copyOf(node.getAssignments()).inverse();
    Constraint constraint;
    // use evaluator only when there is some predicate which could not be translated into tuple domain
    if (pruneWithPredicateExpression && !TRUE_LITERAL.equals(decomposedPredicate.getRemainingExpression())) {
        LayoutConstraintEvaluator evaluator = new LayoutConstraintEvaluator(plannerContext, typeAnalyzer, session, symbolAllocator.getTypes(), node.getAssignments(), combineConjuncts(plannerContext.getMetadata(), splitExpression.getDeterministicPredicate(), // which would be expensive to evaluate in the call to isCandidate below.
        domainTranslator.toPredicate(session, newDomain.simplify().transformKeys(assignments::get))));
        constraint = new Constraint(newDomain, connectorExpression.orElse(TRUE), connectorExpressionAssignments, evaluator::isCandidate, evaluator.getArguments());
    } else {
        // Currently, invoking the expression interpreter is very expensive.
        // TODO invoke the interpreter unconditionally when the interpreter becomes cheap enough.
        constraint = new Constraint(newDomain, connectorExpression.orElse(TRUE), connectorExpressionAssignments);
    }
    // check if new domain is wider than domain already provided by table scan
    if (constraint.predicate().isEmpty() && // TODO do we need to track enforced ConnectorExpression in TableScanNode?
    TRUE.equals(connectorExpression.orElse(TRUE)) && newDomain.contains(node.getEnforcedConstraint())) {
        Expression resultingPredicate = createResultingPredicate(plannerContext, session, symbolAllocator, typeAnalyzer, splitExpression.getDynamicFilter(), TRUE_LITERAL, splitExpression.getNonDeterministicPredicate(), decomposedPredicate.getRemainingExpression());
        if (!TRUE_LITERAL.equals(resultingPredicate)) {
            return Optional.of(new FilterNode(filterNode.getId(), node, resultingPredicate));
        }
        return Optional.of(node);
    }
    if (newDomain.isNone()) {
        // to turn the subtree into a Values node
        return Optional.of(new ValuesNode(node.getId(), node.getOutputSymbols(), ImmutableList.of()));
    }
    Optional<ConstraintApplicationResult<TableHandle>> result = plannerContext.getMetadata().applyFilter(session, node.getTable(), constraint);
    if (result.isEmpty()) {
        return Optional.empty();
    }
    TableHandle newTable = result.get().getHandle();
    TableProperties newTableProperties = plannerContext.getMetadata().getTableProperties(session, newTable);
    Optional<TablePartitioning> newTablePartitioning = newTableProperties.getTablePartitioning();
    if (newTableProperties.getPredicate().isNone()) {
        return Optional.of(new ValuesNode(node.getId(), node.getOutputSymbols(), ImmutableList.of()));
    }
    TupleDomain<ColumnHandle> remainingFilter = result.get().getRemainingFilter();
    Optional<ConnectorExpression> remainingConnectorExpression = result.get().getRemainingExpression();
    boolean precalculateStatistics = result.get().isPrecalculateStatistics();
    verifyTablePartitioning(session, plannerContext.getMetadata(), node, newTablePartitioning);
    TableScanNode tableScan = new TableScanNode(node.getId(), newTable, node.getOutputSymbols(), node.getAssignments(), computeEnforced(newDomain, remainingFilter), // TODO (https://github.com/trinodb/trino/issues/8144) distinguish between predicate pushed down and remaining
    deriveTableStatisticsForPushdown(statsProvider, session, precalculateStatistics, filterNode), node.isUpdateTarget(), node.getUseConnectorNodePartitioning());
    Expression remainingDecomposedPredicate;
    if (remainingConnectorExpression.isEmpty() || remainingConnectorExpression.equals(connectorExpression)) {
        remainingDecomposedPredicate = decomposedPredicate.getRemainingExpression();
    } else {
        Map<String, Symbol> variableMappings = assignments.values().stream().collect(toImmutableMap(Symbol::getName, Function.identity()));
        Expression translatedExpression = ConnectorExpressionTranslator.translate(session, remainingConnectorExpression.get(), plannerContext, variableMappings, new LiteralEncoder(plannerContext));
        if (connectorExpression.isEmpty()) {
            remainingDecomposedPredicate = ExpressionUtils.combineConjuncts(plannerContext.getMetadata(), translatedExpression, decomposedPredicate.getRemainingExpression());
        } else {
            remainingDecomposedPredicate = translatedExpression;
        }
    }
    Expression resultingPredicate = createResultingPredicate(plannerContext, session, symbolAllocator, typeAnalyzer, splitExpression.getDynamicFilter(), domainTranslator.toPredicate(session, remainingFilter.transformKeys(assignments::get)), splitExpression.getNonDeterministicPredicate(), remainingDecomposedPredicate);
    if (!TRUE_LITERAL.equals(resultingPredicate)) {
        return Optional.of(new FilterNode(filterNode.getId(), tableScan, resultingPredicate));
    }
    return Optional.of(tableScan);
}