Uses of Class
org.apache.drill.common.expression.NullExpression

Packages that use NullExpression

Package	Description
org.apache.drill.common.expression	Logical expression tree representation.
org.apache.drill.common.expression.visitors	Visitors for validating or optimizing logical expressions.
org.apache.drill.exec.compile.sig	TODO - write docs for this package
org.apache.drill.exec.expr	Drill expression materialization and evaluation facilities.
org.apache.drill.exec.expr.fn.interpreter

Uses of NullExpression in org.apache.drill.common.expression

Fields in org.apache.drill.common.expression declared as NullExpression

Modifier and Type	Field and Description
static NullExpression	NullExpression.INSTANCE

Methods in org.apache.drill.common.expression with parameters of type NullExpression

Modifier and Type	Method and Description
Void	ExpressionStringBuilder.visitNullExpression(NullExpression e, StringBuilder sb)

Uses of NullExpression in org.apache.drill.common.expression.visitors

Methods in org.apache.drill.common.expression.visitors with parameters of type NullExpression

Modifier and Type	Method and Description
Boolean	AggregateChecker.visitNullExpression(NullExpression e, ErrorCollector value)
Void	ExpressionValidator.visitNullExpression(NullExpression e, ErrorCollector value)
T	AbstractExprVisitor.visitNullExpression(NullExpression e, VAL value)
T	ExprVisitor.visitNullExpression(NullExpression e, VAL value)

Uses of NullExpression in org.apache.drill.exec.compile.sig

Methods in org.apache.drill.exec.compile.sig with parameters of type NullExpression

Modifier and Type	Method and Description
Boolean	ConstantExpressionIdentifier.visitNullExpression(NullExpression e, IdentityHashMap<LogicalExpression,Object> value)

Uses of NullExpression in org.apache.drill.exec.expr

Methods in org.apache.drill.exec.expr with parameters of type NullExpression

Modifier and Type	Method and Description
LogicalExpression	CloneVisitor.visitNullExpression(NullExpression e, Void value)
Integer	HashVisitor.visitNullExpression(NullExpression e, Void value)

Uses of NullExpression in org.apache.drill.exec.expr.fn.interpreter

Methods in org.apache.drill.exec.expr.fn.interpreter with parameters of type NullExpression

Modifier and Type	Method and Description
ValueHolder	InterpreterEvaluator.EvalVisitor.visitNullExpression(NullExpression e, Integer value)