Package org.apache.drill.exec.expr

Class EvaluationVisitor

java.lang.Object

org.apache.drill.exec.expr.EvaluationVisitor

public class EvaluationVisitor
extends Object

Visitor that generates code for eval

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	EvaluationVisitor.VectorVariableHolder	Extended variable descriptor ("holding container") for the variable which references the value holder ("FooHolder") that stores the value from a value vector.

Field Summary

Fields

Modifier and Type	Field	Description
Map<org.apache.drill.exec.expr.EvaluationVisitor.ExpressionHolder,ClassGenerator.HoldingContainer>	previousExpressions

Constructor Summary

Constructors

Constructor	Description
EvaluationVisitor()

Method Summary

Modifier and Type	Method	Description
ClassGenerator.HoldingContainer	addExpr(LogicalExpression e, ClassGenerator<?> generator)

Methods inherited from class java.lang.Object

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

Field Details

previousExpressions

public Map<org.apache.drill.exec.expr.EvaluationVisitor.ExpressionHolder,ClassGenerator.HoldingContainer> previousExpressions

Constructor Details

EvaluationVisitor

public EvaluationVisitor()

Method Details

addExpr

public ClassGenerator.HoldingContainer addExpr(LogicalExpression e,
 ClassGenerator<?> generator)