Examples with CallExpression com.facebook.presto.spi.relation.CallExpression used on opensource projects

Example 1 with CallExpression

use of com.facebook.presto.spi.relation.CallExpression in project presto by prestodb.

the class DruidPushdownUtils method computeAggregationNodes.

public static List<DruidAggregationColumnNode> computeAggregationNodes(AggregationNode aggregationNode) {
    int groupByKeyIndex = 0;
    ImmutableList.Builder<DruidAggregationColumnNode> nodeBuilder = ImmutableList.builder();
    for (VariableReferenceExpression outputColumn : aggregationNode.getOutputVariables()) {
        AggregationNode.Aggregation aggregation = aggregationNode.getAggregations().get(outputColumn);
        if (aggregation != null) {
            if (aggregation.getFilter().isPresent() || aggregation.isDistinct() || aggregation.getOrderBy().isPresent()) {
                throw new PrestoException(DRUID_PUSHDOWN_UNSUPPORTED_EXPRESSION, "Unsupported aggregation node " + aggregationNode);
            }
            if (aggregation.getMask().isPresent()) {
                // E.g. `SELECT count(distinct COL_A), sum(COL_B) FROM myTable` to Druid as `SELECT distinctCount(COL_A), sum(COL_B) FROM myTable`
                if (aggregation.getCall().getDisplayName().equalsIgnoreCase(COUNT_FUNCTION_NAME) && aggregation.getMask().get().getName().equalsIgnoreCase(aggregation.getArguments().get(0) + DISTINCT_MASK)) {
                    nodeBuilder.add(new AggregationFunctionColumnNode(outputColumn, new CallExpression(aggregation.getCall().getSourceLocation(), DRUID_COUNT_DISTINCT_FUNCTION_NAME, aggregation.getCall().getFunctionHandle(), aggregation.getCall().getType(), aggregation.getCall().getArguments())));
                    continue;
                }
                // Druid doesn't support push down aggregation functions other than count on top of distinct function.
                throw new PrestoException(DRUID_PUSHDOWN_UNSUPPORTED_EXPRESSION, "Unsupported aggregation node with mask " + aggregationNode);
            }
            if (handlePushDownSingleDistinctCount(nodeBuilder, aggregationNode, outputColumn, aggregation)) {
                continue;
            }
            nodeBuilder.add(new AggregationFunctionColumnNode(outputColumn, aggregation.getCall()));
        } else {
            // group by output
            VariableReferenceExpression inputColumn = aggregationNode.getGroupingKeys().get(groupByKeyIndex);
            nodeBuilder.add(new GroupByColumnNode(inputColumn, outputColumn));
            groupByKeyIndex++;
        }
    }
    return nodeBuilder.build();
}

Example 2 with CallExpression

use of com.facebook.presto.spi.relation.CallExpression in project presto by prestodb.

the class SubfieldExtractor method toRowExpression.

private RowExpression toRowExpression(Subfield subfield, List<Type> types) {
    List<Subfield.PathElement> path = subfield.getPath();
    if (path.isEmpty()) {
        return new VariableReferenceExpression(Optional.empty(), subfield.getRootName(), types.get(0));
    }
    RowExpression base = toRowExpression(new Subfield(subfield.getRootName(), path.subList(0, path.size() - 1)), types.subList(0, types.size() - 1));
    Type baseType = types.get(types.size() - 2);
    Subfield.PathElement pathElement = path.get(path.size() - 1);
    if (pathElement instanceof Subfield.LongSubscript) {
        Type indexType = baseType instanceof MapType ? ((MapType) baseType).getKeyType() : BIGINT;
        FunctionHandle functionHandle = functionResolution.subscriptFunction(baseType, indexType);
        ConstantExpression index = new ConstantExpression(base.getSourceLocation(), ((Subfield.LongSubscript) pathElement).getIndex(), indexType);
        return new CallExpression(base.getSourceLocation(), SUBSCRIPT.name(), functionHandle, types.get(types.size() - 1), ImmutableList.of(base, index));
    }
    if (pathElement instanceof Subfield.StringSubscript) {
        Type indexType = ((MapType) baseType).getKeyType();
        FunctionHandle functionHandle = functionResolution.subscriptFunction(baseType, indexType);
        ConstantExpression index = new ConstantExpression(base.getSourceLocation(), Slices.utf8Slice(((Subfield.StringSubscript) pathElement).getIndex()), indexType);
        return new CallExpression(base.getSourceLocation(), SUBSCRIPT.name(), functionHandle, types.get(types.size() - 1), ImmutableList.of(base, index));
    }
    if (pathElement instanceof Subfield.NestedField) {
        Subfield.NestedField nestedField = (Subfield.NestedField) pathElement;
        return new SpecialFormExpression(base.getSourceLocation(), DEREFERENCE, types.get(types.size() - 1), base, new ConstantExpression(base.getSourceLocation(), getFieldIndex((RowType) baseType, nestedField.getName()), INTEGER));
    }
    verify(false, "Unexpected path element: " + pathElement);
    return null;
}

Example 3 with CallExpression

use of com.facebook.presto.spi.relation.CallExpression in project presto by prestodb.

the class PinotPushdownUtils method computeAggregationNodes.

public static List<AggregationColumnNode> computeAggregationNodes(AggregationNode aggregationNode) {
    int groupByKeyIndex = 0;
    ImmutableList.Builder<AggregationColumnNode> nodeBuilder = ImmutableList.builder();
    for (VariableReferenceExpression outputColumn : aggregationNode.getOutputVariables()) {
        AggregationNode.Aggregation aggregation = aggregationNode.getAggregations().get(outputColumn);
        if (aggregation != null) {
            if (aggregation.getFilter().isPresent() || aggregation.isDistinct() || aggregation.getOrderBy().isPresent()) {
                throw new PinotException(PINOT_UNSUPPORTED_EXPRESSION, Optional.empty(), "Unsupported aggregation node " + aggregationNode);
            }
            if (aggregation.getMask().isPresent()) {
                // E.g. `SELECT count(distinct COL_A), sum(COL_B) FROM myTable` to Pinot as `SELECT distinctCount(COL_A), sum(COL_B) FROM myTable`
                if (aggregation.getCall().getDisplayName().equalsIgnoreCase(COUNT_FUNCTION_NAME) && aggregation.getMask().get().getName().contains(DISTINCT_MASK)) {
                    nodeBuilder.add(new AggregationFunctionColumnNode(outputColumn, new CallExpression(aggregation.getCall().getSourceLocation(), PINOT_DISTINCT_COUNT_FUNCTION_NAME, aggregation.getCall().getFunctionHandle(), aggregation.getCall().getType(), aggregation.getCall().getArguments())));
                    continue;
                }
                // Pinot doesn't support push down aggregation functions other than count on top of distinct function.
                throw new PinotException(PINOT_UNSUPPORTED_EXPRESSION, Optional.empty(), "Unsupported aggregation node with mask " + aggregationNode);
            }
            if (handlePushDownSingleDistinctCount(nodeBuilder, aggregationNode, outputColumn, aggregation)) {
                continue;
            }
            nodeBuilder.add(new AggregationFunctionColumnNode(outputColumn, aggregation.getCall()));
        } else {
            // group by output
            VariableReferenceExpression inputColumn = aggregationNode.getGroupingKeys().get(groupByKeyIndex);
            nodeBuilder.add(new GroupByColumnNode(inputColumn, outputColumn));
            groupByKeyIndex++;
        }
    }
    return nodeBuilder.build();
}

Example 4 with CallExpression

use of com.facebook.presto.spi.relation.CallExpression in project presto by prestodb.

the class RemoteProjectOperator method addInput.

@Override
public void addInput(Page page) {
    checkState(!finishing, "Operator is already finishing");
    checkState(!processingPage(), "Still processing previous input");
    requireNonNull(page, "page is null");
    for (int channel = 0; channel < projections.size(); channel++) {
        RowExpression projection = projections.get(channel);
        if (projection instanceof InputReferenceExpression) {
            result[channel] = completedFuture(new SqlFunctionResult(page.getBlock(((InputReferenceExpression) projection).getField()), 0));
        } else if (projection instanceof CallExpression) {
            CallExpression remoteCall = (CallExpression) projection;
            result[channel] = functionAndTypeManager.executeFunction(operatorContext.getDriverContext().getTaskId().toString(), remoteCall.getFunctionHandle(), page, remoteCall.getArguments().stream().map(InputReferenceExpression.class::cast).map(InputReferenceExpression::getField).collect(toImmutableList()));
        } else {
            checkState(projection instanceof ConstantExpression, format("Does not expect expression type %s", projection.getClass()));
        }
    }
}

Example 5 with CallExpression

use of com.facebook.presto.spi.relation.CallExpression in project presto by prestodb.

the class TransformExistsApplyToLateralNode method rewriteToDefaultAggregation.

private PlanNode rewriteToDefaultAggregation(ApplyNode parent, Context context) {
    VariableReferenceExpression count = context.getVariableAllocator().newVariable("count", BIGINT);
    VariableReferenceExpression exists = getOnlyElement(parent.getSubqueryAssignments().getVariables());
    return new LateralJoinNode(parent.getSourceLocation(), parent.getId(), parent.getInput(), new ProjectNode(context.getIdAllocator().getNextId(), new AggregationNode(parent.getSourceLocation(), context.getIdAllocator().getNextId(), parent.getSubquery(), ImmutableMap.of(count, new Aggregation(new CallExpression(exists.getSourceLocation(), "count", functionResolution.countFunction(), BIGINT, ImmutableList.of()), Optional.empty(), Optional.empty(), false, Optional.empty())), globalAggregation(), ImmutableList.of(), AggregationNode.Step.SINGLE, Optional.empty(), Optional.empty()), Assignments.of(exists, castToRowExpression(new ComparisonExpression(GREATER_THAN, asSymbolReference(count), new Cast(new LongLiteral("0"), BIGINT.toString()))))), parent.getCorrelation(), INNER, parent.getOriginSubqueryError());
}