Package org.apache.druid.math.expr.vector

Class VectorProcessors

java.lang.Object

org.apache.druid.math.expr.vector.VectorProcessors

public class VectorProcessors
extends Object

Method Summary

Modifier and Type	Method	Description
static <T> ExprVectorProcessor<T>	and(Expr.VectorInputBindingInspector inputTypes, Expr left, Expr right)	Creates an ExprVectorProcessor for the logical 'and' operator, which produces a long typed vector output with values set by the following rules: true/true -> true (1) true/null, null/true, null/null -> null false/null, null/false -> false (0)
static <T> ExprVectorProcessor<T>	constant(Double constant, int maxVectorSize)	Creates an ExprVectorProcessor that creates a ExprEvalVector for a constant Double value.
static <T> ExprVectorProcessor<T>	constant(Long constant, int maxVectorSize)	Creates an ExprVectorProcessor that creates a ExprEvalVector for a constant Long value.
static <T> ExprVectorProcessor<T>	constant(Object constant, int maxVectorSize, ExpressionType type)	Creates an ExprVectorProcessor that creates a ExprEvalVector for a constant any non-numeric value.
static ExprVectorProcessor<?>	identifier(Expr.VectorInputBindingInspector inspector, String binding)	Creates an ExprVectorProcessor that creates a ExprEvalVector for some expression variable input binding, typically for segment column value vectors from a VectorValueSelector or VectorObjectSelector.
static <T> ExprVectorProcessor<T>	isNotNull(Expr.VectorInputBindingInspector inspector, Expr expr)	Creates an ExprVectorProcessor for the 'isnotnull' function, that produces a "boolean" typed output vector (long[]) with values set to 1 if the input value was not null or 0 if it was null.
static <T> ExprVectorProcessor<T>	isNull(Expr.VectorInputBindingInspector inspector, Expr expr)	Creates an ExprVectorProcessor for the 'isnull' function, that produces a "boolean" typed output vector (long[]) with values set to 1 if the input value was null or 0 if it was not null.
static <T> ExprVectorProcessor<T>	makeSymmetricalProcessor(Expr.VectorInputBindingInspector inspector, Expr left, Expr right, Supplier<ExprVectorProcessor<?>> longProcessor, Supplier<ExprVectorProcessor<?>> doubleProcessor, Supplier<ExprVectorProcessor<?>> objectProcessor)	Make a 2 argument, symmetrical processor where both argments must be the same input type and produce the same output type long, long -> long double, double -> double string, string -> string
static <T> ExprVectorProcessor<T>	not(Expr.VectorInputBindingInspector inspector, Expr expr)	Creates an ExprVectorProcessor for the logical 'not' operator, which produces a long typed vector output with values set by the following rules: false -> true (1) null -> null true -> false (0)
static <T> ExprVectorProcessor<T>	or(Expr.VectorInputBindingInspector inspector, Expr left, Expr right)	Creates an ExprVectorProcessor for the logical 'or' operator, which produces a long typed vector output with values set by the following rules: true/null, null/true -> true (1) false/null, null/false, null/null -> null false/false -> false (0)
static <T> ExprVectorProcessor<T>	parseLong(Expr.VectorInputBindingInspector inspector, Expr arg, int radix)	Creates an ExprVectorProcessor that will parse a string into a long value given a radix.

Methods inherited from class java.lang.Object

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

Method Details

makeSymmetricalProcessor

public static <T> ExprVectorProcessor<T> makeSymmetricalProcessor(Expr.VectorInputBindingInspector inspector,
 Expr left,
 Expr right,
 Supplier<ExprVectorProcessor<?>> longProcessor,
 Supplier<ExprVectorProcessor<?>> doubleProcessor,
 Supplier<ExprVectorProcessor<?>> objectProcessor)

Make a 2 argument, symmetrical processor where both argments must be the same input type and produce the same output type long, long -> long double, double -> double string, string -> string

constant

public static <T> ExprVectorProcessor<T> constant(@Nullable
 Object constant,
 int maxVectorSize,
 ExpressionType type)

Creates an ExprVectorProcessor that creates a ExprEvalVector for a constant any non-numeric value. Numeric types should use constant(Double, int) or constant(Long, int) instead.

See Also:

• org.apache.druid.math.expr.ConstantExpr<T>

constant

public static <T> ExprVectorProcessor<T> constant(@Nullable
 Double constant,
 int maxVectorSize)

Creates an ExprVectorProcessor that creates a ExprEvalVector for a constant Double value.

See Also:

• org.apache.druid.math.expr.ConstantExpr<T>

constant

public static <T> ExprVectorProcessor<T> constant(@Nullable
 Long constant,
 int maxVectorSize)

Creates an ExprVectorProcessor that creates a ExprEvalVector for a constant Long value.

See Also:

• org.apache.druid.math.expr.ConstantExpr<T>

identifier

public static ExprVectorProcessor<?> identifier(Expr.VectorInputBindingInspector inspector,
 String binding)

Creates an ExprVectorProcessor that creates a ExprEvalVector for some expression variable input binding, typically for segment column value vectors from a VectorValueSelector or VectorObjectSelector.

See Also:

• IdentifierExpr

parseLong

public static <T> ExprVectorProcessor<T> parseLong(Expr.VectorInputBindingInspector inspector,
 Expr arg,
 int radix)

Creates an ExprVectorProcessor that will parse a string into a long value given a radix.

See Also:

• Function.ParseLong

isNull

public static <T> ExprVectorProcessor<T> isNull(Expr.VectorInputBindingInspector inspector,
 Expr expr)

Creates an ExprVectorProcessor for the 'isnull' function, that produces a "boolean" typed output vector (long[]) with values set to 1 if the input value was null or 0 if it was not null.

See Also:

• Function.IsNullFunc

isNotNull

public static <T> ExprVectorProcessor<T> isNotNull(Expr.VectorInputBindingInspector inspector,
 Expr expr)

Creates an ExprVectorProcessor for the 'isnotnull' function, that produces a "boolean" typed output vector (long[]) with values set to 1 if the input value was not null or 0 if it was null.

See Also:

• Function.IsNotNullFunc

not

public static <T> ExprVectorProcessor<T> not(Expr.VectorInputBindingInspector inspector,
 Expr expr)

Creates an ExprVectorProcessor for the logical 'not' operator, which produces a long typed vector output with values set by the following rules: false -> true (1) null -> null true -> false (0)

See Also:

• UnaryNotExpr

or

public static <T> ExprVectorProcessor<T> or(Expr.VectorInputBindingInspector inspector,
 Expr left,
 Expr right)

Creates an ExprVectorProcessor for the logical 'or' operator, which produces a long typed vector output with values set by the following rules: true/null, null/true -> true (1) false/null, null/false, null/null -> null false/false -> false (0)

See Also:

• BinOrExpr

and

public static <T> ExprVectorProcessor<T> and(Expr.VectorInputBindingInspector inputTypes,
 Expr left,
 Expr right)

Creates an ExprVectorProcessor for the logical 'and' operator, which produces a long typed vector output with values set by the following rules: true/true -> true (1) true/null, null/true, null/null -> null false/null, null/false -> false (0)

See Also:

• BinAndExpr