org.apache.tajo.plan.logical

Interface SelectableNode

All Known Implementing Classes:

HavingNode, IndexScanNode, PartitionedTableScanNode, ScanNode, SelectionNode

public interface SelectableNode

An interface for logical node which is able to filter tuples.

Method Summary

Methods

Modifier and Type	Method and Description
EvalNode	getQual() Get a filter condition
boolean	hasQual() Checking if it has filter condition
void	setQual(EvalNode eval) Set a filter condition.

Method Detail

hasQual

boolean hasQual()

Checking if it has filter condition

Returns:

True if it has filter condition. Otherwise, it will return false.

setQual

void setQual(EvalNode eval)

Set a filter condition.

Parameters:

eval - EvalNode resulting in a boolean result.

getQual

EvalNode getQual()

Get a filter condition

Returns:

Filter Condition