Package io.substrait.expression

Class Expression.NullLiteral

java.lang.Object

io.substrait.expression.Expression.NullLiteral

All Implemented Interfaces:

Expression, Expression.Literal, FunctionArg

Direct Known Subclasses:

ImmutableExpression.NullLiteral

Enclosing interface:

Expression

@Immutable
public abstract static class Expression.NullLiteral
extends Object
implements Expression.Literal

Nested Class Summary

Nested classes/interfaces inherited from interface io.substrait.expression.Expression

Expression.AggregationInvocation, Expression.AggregationPhase, Expression.BinaryLiteral, Expression.BoolLiteral, Expression.Cast, Expression.DateLiteral, Expression.DecimalLiteral, Expression.EmptyListLiteral, Expression.EmptyMapLiteral, Expression.FailureBehavior, Expression.FixedBinaryLiteral, Expression.FixedCharLiteral, Expression.FP32Literal, Expression.FP64Literal, Expression.I16Literal, Expression.I32Literal, Expression.I64Literal, Expression.I8Literal, Expression.IfClause, Expression.IfThen, Expression.InPredicate, Expression.IntervalCompoundLiteral, Expression.IntervalDayLiteral, Expression.IntervalYearLiteral, Expression.Lambda, Expression.ListLiteral, Expression.Literal, Expression.MapLiteral, Expression.MultiOrList, Expression.MultiOrListRecord, Expression.Nested, Expression.NestedList, Expression.NestedStruct, Expression.NullLiteral, Expression.PrecisionTimeLiteral, Expression.PrecisionTimestampLiteral, Expression.PrecisionTimestampTZLiteral, Expression.PredicateOp, Expression.ScalarFunctionInvocation, Expression.ScalarSubquery, Expression.SetPredicate, Expression.SingleOrList, Expression.SortDirection, Expression.SortField, Expression.StrLiteral, Expression.StructLiteral, Expression.Subquery, Expression.Switch, Expression.SwitchClause, Expression.TimeLiteral, Expression.TimestampLiteral, Expression.TimestampTZLiteral, Expression.UserDefinedAnyLiteral, Expression.UserDefinedLiteral, Expression.UserDefinedStructLiteral, Expression.UUIDLiteral, Expression.VarCharLiteral, Expression.WindowBoundsType, Expression.WindowFunctionInvocation

Nested classes/interfaces inherited from interface io.substrait.expression.FunctionArg

FunctionArg.FuncArgVisitor<R,C extends VisitationContext,E extends Throwable>, FunctionArg.ProtoFrom

Constructor Summary

Constructors

Constructor	Description
NullLiteral()

Method Summary

Modifier and Type	Method	Description
<R, C extends VisitationContext, E extends Throwable> R	accept(ExpressionVisitor<R,C,E> visitor, C context)
static ImmutableExpression.NullLiteral.Builder	builder()
protected void	check()
Type	getType()
boolean	nullable()	A null literal is inherently nullable.
abstract Type	type()
Expression.NullLiteral	withNullable(boolean nullable)	Returns a copy of this literal with the specified nullability.

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.substrait.expression.Expression

accept

Constructor Details

NullLiteral

public NullLiteral()

Method Details

type

public abstract Type type()

nullable

public boolean nullable()

A null literal is inherently nullable. You cannot have a null of a non nullable type.

Specified by:

nullable in interface Expression.Literal

withNullable

public Expression.NullLiteral withNullable(boolean nullable)

Description copied from interface: Expression.Literal

Returns a copy of this literal with the specified nullability.

This method is implemented by all concrete Literal classes via Immutables code generation.

Specified by:

withNullable in interface Expression.Literal

check

@Check
protected void check()

getType

public Type getType()

Specified by:

getType in interface Expression

builder

public static ImmutableExpression.NullLiteral.Builder builder()

accept

public <R,
C extends VisitationContext,
E extends Throwable>
R accept(ExpressionVisitor<R,C,E> visitor,
 C context)
  throws E

Specified by:

accept in interface Expression

Throws:

E extends Throwable