org.apache.tajo.plan.expr

Class EvalTreeUtil.UniqueColumnFinder

java.lang.Object

org.apache.tajo.plan.expr.EvalTreeUtil.UniqueColumnFinder

All Implemented Interfaces:

EvalNodeVisitor

Enclosing class:

EvalTreeUtil

public static class EvalTreeUtil.UniqueColumnFinder
extends Object
implements EvalNodeVisitor

Constructor Summary

Constructors

Constructor and Description
EvalTreeUtil.UniqueColumnFinder()

Method Summary

Methods

Modifier and Type	Method and Description
LinkedHashSet<Column>	getColumnRefs()
void	visit(EvalNode node)

Methods inherited from class java.lang.Object

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

Constructor Detail

EvalTreeUtil.UniqueColumnFinder

public EvalTreeUtil.UniqueColumnFinder()

Method Detail

visit

public void visit(EvalNode node)

Specified by:

visit in interface EvalNodeVisitor

getColumnRefs

public LinkedHashSet<Column> getColumnRefs()