org.apache.druid.math.expr

Class Function.BivariateMathFunction

java.lang.Object

org.apache.druid.math.expr.Function.BivariateFunction

org.apache.druid.math.expr.Function.BivariateMathFunction

All Implemented Interfaces:

Function, NamedFunction

Direct Known Subclasses:

Function.Div, Function.DoubleBivariateMathFunction, Function.Max, Function.Min, Function.SafeDivide

Enclosing interface:

Function

public abstract static class Function.BivariateMathFunction
extends Function.BivariateFunction

Base class for a 2 variable input mathematical Function, with specialized 'eval' implementations that operate on primitive number types

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.druid.math.expr.Function

Function.Abs, Function.Acos, Function.ArrayAddElementFunction, Function.ArrayAppendFunction, Function.ArrayConcatFunction, Function.ArrayConstructorFunction, Function.ArrayContainsFunction, Function.ArrayLengthFunction, Function.ArrayOffsetFunction, Function.ArrayOffsetOfFunction, Function.ArrayOrdinalFunction, Function.ArrayOrdinalOfFunction, Function.ArrayOverlapFunction, Function.ArrayPrependFunction, Function.ArrayScalarFunction, Function.ArraySetAddAllFunction, Function.ArraySetAddFunction, Function.ArraysFunction, Function.ArraySliceFunction, Function.ArraysMergeFunction, Function.ArrayToMultiValueStringFunction, Function.ArrayToStringFunction, Function.Asin, Function.Atan, Function.Atan2, Function.BitwiseAnd, Function.BitwiseComplement, Function.BitwiseConvertDoubleToLongBits, Function.BitwiseConvertLongBitsToDouble, Function.BitwiseOr, Function.BitwiseShiftLeft, Function.BitwiseShiftRight, Function.BitwiseXor, Function.BivariateBitwiseMathFunction, Function.BivariateFunction, Function.BivariateMathFunction, Function.CaseSearchedFunc, Function.CaseSimpleFunc, Function.CastFunc, Function.Cbrt, Function.Ceil, Function.ConcatFunc, Function.ConditionFunc, Function.CopySign, Function.Cos, Function.Cosh, Function.Cot, Function.Div, Function.DoubleBivariateMathFunction, Function.DoubleUnivariateMathFunction, Function.Exp, Function.Expm1, Function.Floor, Function.GetExponent, Function.GreatestFunc, Function.HumanReadableBinaryByteFormatFunc, Function.HumanReadableDecimalByteFormatFunc, Function.HumanReadableDecimalFormatFunc, Function.Hypot, Function.IsNotNullFunc, Function.IsNullFunc, Function.LeastFunc, Function.LeftFunc, Function.Log, Function.Log10, Function.Log1p, Function.LowerFunc, Function.LpadFunc, Function.Max, Function.Min, Function.MultiValueStringToArrayFunction, Function.NextAfter, Function.NextUp, Function.NvlFunc, Function.ParseLong, Function.Pi, Function.Pow, Function.ReduceFunction, Function.Remainder, Function.RepeatFunc, Function.ReplaceFunc, Function.ReverseFunc, Function.RightFunc, Function.Rint, Function.Round, Function.RpadFunc, Function.SafeDivide, Function.Scalb, Function.Signum, Function.Sin, Function.Sinh, Function.SizeFormatFunc, Function.Sqrt, Function.StringFormatFunc, Function.StringLongFunction, Function.StringToArrayFunction, Function.StrlenFunc, Function.StrposFunc, Function.SubMonthFunc, Function.SubstringFunc, Function.Tan, Function.Tanh, Function.TimestampFromEpochFunc, Function.ToDegrees, Function.ToRadians, Function.Ulp, Function.UnivariateFunction, Function.UnivariateMathFunction, Function.UnixTimestampFunc, Function.UpperFunc

Constructor Summary

Constructors

Constructor and Description
BivariateMathFunction()

Method Summary

Modifier and Type	Method and Description
boolean	canVectorize(Expr.InputBindingInspector inspector, List<Expr> args) Check if a function can be 'vectorized', for a given set of Expr inputs.
protected ExprEval	eval(double x, double y)
protected ExprEval	eval(ExprEval x, ExprEval y)
protected ExprEval	eval(long x, long y)
ExpressionType	getOutputType(Expr.InputBindingInspector inspector, List<Expr> args) Compute the output type of this function for a given set of argument expression inputs.

Methods inherited from class org.apache.druid.math.expr.Function.BivariateFunction

apply, validateArguments

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.druid.math.expr.Function

asVectorProcessor, getArrayInputs, getScalarInputs, hasArrayInputs, hasArrayOutput

Methods inherited from interface org.apache.druid.math.expr.NamedFunction

name, processingFailed, validationFailed, validationFailed, validationHelperCheckAnyOfArgumentCount, validationHelperCheckArgIsLiteral, validationHelperCheckArgumentCount, validationHelperCheckArgumentCount, validationHelperCheckArgumentRange, validationHelperCheckLambaArgumentCount, validationHelperCheckMinArgumentCount, validationHelperCheckMinArgumentCount

Constructor Detail

BivariateMathFunction

public BivariateMathFunction()

Method Detail

eval

protected final ExprEval eval(ExprEval x,
                              ExprEval y)

Specified by:

eval in class Function.BivariateFunction

eval

protected ExprEval eval(long x,
                        long y)

eval

protected ExprEval eval(double x,
                        double y)

getOutputType

@Nullable
public ExpressionType getOutputType(Expr.InputBindingInspector inspector,
                                              List<Expr> args)

Description copied from interface: Function

Compute the output type of this function for a given set of argument expression inputs.

See Also:

Expr.getOutputType(org.apache.druid.math.expr.Expr.InputBindingInspector)

canVectorize

public boolean canVectorize(Expr.InputBindingInspector inspector,
                            List<Expr> args)

Description copied from interface: Function

Check if a function can be 'vectorized', for a given set of Expr inputs. If this method returns true, Function.asVectorProcessor(org.apache.druid.math.expr.Expr.VectorInputBindingInspector, java.util.List<org.apache.druid.math.expr.Expr>) is expected to produce a ExprVectorProcessor which can evaluate values in batches to use with vectorized query engines.

See Also:

Expr.canVectorize(Expr.InputBindingInspector), ApplyFunction.canVectorize(Expr.InputBindingInspector, Expr, List)