Examples with RexCall org.apache.calcite.rex.RexCall used on opensource projects

Example 86 with RexCall

use of org.apache.calcite.rex.RexCall in project druid by druid-io.

the class TimeShiftOperatorConversion method toDruidExpression.

@Override
public DruidExpression toDruidExpression(final PlannerContext plannerContext, final RowSignature rowSignature, final RexNode rexNode) {
    final RexCall call = (RexCall) rexNode;
    final DruidExpression timeExpression = Expressions.toDruidExpression(plannerContext, rowSignature, call.getOperands().get(0));
    final DruidExpression periodExpression = Expressions.toDruidExpression(plannerContext, rowSignature, call.getOperands().get(1));
    final DruidExpression stepExpression = Expressions.toDruidExpression(plannerContext, rowSignature, call.getOperands().get(2));
    if (timeExpression == null || periodExpression == null || stepExpression == null) {
        return null;
    }
    final DateTimeZone timeZone = OperatorConversions.getOperandWithDefault(call.getOperands(), 3, operand -> DateTimes.inferTzFromString(RexLiteral.stringValue(operand)), plannerContext.getTimeZone());
    return DruidExpression.ofFunctionCall(Calcites.getColumnTypeForRelDataType(rexNode.getType()), "timestamp_shift", ImmutableList.of(timeExpression, periodExpression, stepExpression, DruidExpression.ofStringLiteral(timeZone.getID())));
}

Example 87 with RexCall

use of org.apache.calcite.rex.RexCall in project druid by druid-io.

the class ArrayContainsOperatorConversion method toDruidFilter.

@Nullable
@Override
public DimFilter toDruidFilter(final PlannerContext plannerContext, RowSignature rowSignature, @Nullable VirtualColumnRegistry virtualColumnRegistry, final RexNode rexNode) {
    final List<RexNode> operands = ((RexCall) rexNode).getOperands();
    final List<DruidExpression> druidExpressions = Expressions.toDruidExpressions(plannerContext, rowSignature, operands);
    if (druidExpressions == null) {
        return null;
    }
    // Converts array_contains() function into an AND of Selector filters if possible.
    final DruidExpression leftExpr = druidExpressions.get(0);
    final DruidExpression rightExpr = druidExpressions.get(1);
    if (leftExpr.isSimpleExtraction()) {
        Expr expr = Parser.parse(rightExpr.getExpression(), plannerContext.getExprMacroTable());
        // different package.
        if (expr.isLiteral()) {
            // Evaluate the expression to get out the array elements.
            // We can safely pass a noop ObjectBinding if the expression is literal.
            ExprEval<?> exprEval = expr.eval(InputBindings.nilBindings());
            String[] arrayElements = exprEval.asStringArray();
            if (arrayElements == null || arrayElements.length == 0) {
                // to create an empty array with no argument, we just return null.
                return null;
            } else if (arrayElements.length == 1) {
                return newSelectorDimFilter(leftExpr.getSimpleExtraction(), arrayElements[0]);
            } else {
                final List<DimFilter> selectFilters = Arrays.stream(arrayElements).map(val -> newSelectorDimFilter(leftExpr.getSimpleExtraction(), val)).collect(Collectors.toList());
                return new AndDimFilter(selectFilters);
            }
        }
    }
    return toExpressionFilter(plannerContext, getDruidFunctionName(), druidExpressions);
}

Example 88 with RexCall

use of org.apache.calcite.rex.RexCall in project druid by druid-io.

the class ArrayOverlapOperatorConversion method toDruidFilter.

@Nullable
@Override
public DimFilter toDruidFilter(final PlannerContext plannerContext, RowSignature rowSignature, @Nullable VirtualColumnRegistry virtualColumnRegistry, final RexNode rexNode) {
    final List<RexNode> operands = ((RexCall) rexNode).getOperands();
    final List<DruidExpression> druidExpressions = Expressions.toDruidExpressions(plannerContext, rowSignature, operands);
    if (druidExpressions == null) {
        return null;
    }
    // Converts array_overlaps() function into an OR of Selector filters if possible.
    final boolean leftSimpleExtractionExpr = druidExpressions.get(0).isSimpleExtraction();
    final boolean rightSimpleExtractionExpr = druidExpressions.get(1).isSimpleExtraction();
    final DruidExpression simpleExtractionExpr;
    final DruidExpression complexExpr;
    if (leftSimpleExtractionExpr ^ rightSimpleExtractionExpr) {
        if (leftSimpleExtractionExpr) {
            simpleExtractionExpr = druidExpressions.get(0);
            complexExpr = druidExpressions.get(1);
        } else {
            simpleExtractionExpr = druidExpressions.get(1);
            complexExpr = druidExpressions.get(0);
        }
    } else {
        return toExpressionFilter(plannerContext, getDruidFunctionName(), druidExpressions);
    }
    Expr expr = Parser.parse(complexExpr.getExpression(), plannerContext.getExprMacroTable());
    if (expr.isLiteral()) {
        // Evaluate the expression to take out the array elements.
        // We can safely pass null if the expression is literal.
        ExprEval<?> exprEval = expr.eval(InputBindings.nilBindings());
        String[] arrayElements = exprEval.asStringArray();
        if (arrayElements == null || arrayElements.length == 0) {
            // to create an empty array with no argument, we just return null.
            return null;
        } else if (arrayElements.length == 1) {
            return newSelectorDimFilter(simpleExtractionExpr.getSimpleExtraction(), arrayElements[0]);
        } else {
            return new InDimFilter(simpleExtractionExpr.getSimpleExtraction().getColumn(), Sets.newHashSet(arrayElements), simpleExtractionExpr.getSimpleExtraction().getExtractionFn(), null);
        }
    }
    return toExpressionFilter(plannerContext, getDruidFunctionName(), druidExpressions);
}

Example 89 with RexCall

use of org.apache.calcite.rex.RexCall in project druid by druid-io.

the class DoublesSketchListArgBaseOperatorConversion method toPostAggregator.

@Nullable
@Override
public PostAggregator toPostAggregator(PlannerContext plannerContext, RowSignature rowSignature, RexNode rexNode, PostAggregatorVisitor postAggregatorVisitor) {
    final List<RexNode> operands = ((RexCall) rexNode).getOperands();
    final double[] args = new double[operands.size() - 1];
    PostAggregator inputSketchPostAgg = null;
    int operandCounter = 0;
    for (RexNode operand : operands) {
        final PostAggregator convertedPostAgg = OperatorConversions.toPostAggregator(plannerContext, rowSignature, operand, postAggregatorVisitor);
        if (convertedPostAgg == null) {
            if (operandCounter > 0) {
                try {
                    if (!operand.isA(SqlKind.LITERAL)) {
                        return null;
                    }
                    double arg = ((Number) RexLiteral.value(operand)).doubleValue();
                    args[operandCounter - 1] = arg;
                } catch (ClassCastException cce) {
                    return null;
                }
            } else {
                return null;
            }
        } else {
            if (operandCounter == 0) {
                inputSketchPostAgg = convertedPostAgg;
            } else {
                if (!operand.isA(SqlKind.LITERAL)) {
                    return null;
                }
            }
        }
        operandCounter++;
    }
    if (inputSketchPostAgg == null) {
        return null;
    }
    return makePostAgg(postAggregatorVisitor.getOutputNamePrefix() + postAggregatorVisitor.getAndIncrementCounter(), inputSketchPostAgg, args);
}

Example 90 with RexCall

use of org.apache.calcite.rex.RexCall in project druid by druid-io.

the class DoublesSketchSingleArgBaseOperatorConversion method toPostAggregator.

@Nullable
@Override
public PostAggregator toPostAggregator(PlannerContext plannerContext, RowSignature rowSignature, RexNode rexNode, PostAggregatorVisitor postAggregatorVisitor) {
    final List<RexNode> operands = ((RexCall) rexNode).getOperands();
    final PostAggregator firstOperand = OperatorConversions.toPostAggregator(plannerContext, rowSignature, operands.get(0), postAggregatorVisitor);
    if (firstOperand == null) {
        return null;
    }
    if (!operands.get(1).isA(SqlKind.LITERAL)) {
        return null;
    }
    final float arg = ((Number) RexLiteral.value(operands.get(1))).floatValue();
    return makePostAgg(postAggregatorVisitor.getOutputNamePrefix() + postAggregatorVisitor.getAndIncrementCounter(), firstOperand, arg);
}