org.apache.tajo.plan.logical

Class SelectionNode

java.lang.Object

org.apache.tajo.plan.logical.LogicalNode

org.apache.tajo.plan.logical.UnaryNode

org.apache.tajo.plan.logical.SelectionNode

All Implemented Interfaces:

Cloneable, GsonObject, SelectableNode

public class SelectionNode
extends UnaryNode
implements SelectableNode, Cloneable

Constructor Summary

Constructors

Constructor and Description
SelectionNode(int pid)

Method Summary

Methods

Modifier and Type	Method and Description
Object	clone()
boolean	equals(Object obj)
PlanString	getPlanString()
EvalNode	getQual() Get a filter condition
boolean	hasQual() Checking if it has filter condition
void	setQual(EvalNode qual) Set a filter condition.
String	toString()

Methods inherited from class org.apache.tajo.plan.logical.UnaryNode

childNum, deepEquals, getChild, getChild, postOrder, preOrder, setChild

Methods inherited from class org.apache.tajo.plan.logical.LogicalNode

getCost, getInSchema, getOutSchema, getPID, getType, setCost, setInSchema, setOutSchema, setPID, setType, toJson

Methods inherited from class java.lang.Object

finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

SelectionNode

public SelectionNode(int pid)

Method Detail

hasQual

public boolean hasQual()

Description copied from interface: SelectableNode

Checking if it has filter condition

Specified by:

hasQual in interface SelectableNode

Returns:

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

setQual

public void setQual(EvalNode qual)

Description copied from interface: SelectableNode

Set a filter condition.

Specified by:

setQual in interface SelectableNode

Parameters:

qual - EvalNode resulting in a boolean result.

getQual

public EvalNode getQual()

Description copied from interface: SelectableNode

Get a filter condition

Specified by:

getQual in interface SelectableNode

Returns:

Filter Condition

getPlanString

public PlanString getPlanString()

Specified by:

getPlanString in class LogicalNode

equals

public boolean equals(Object obj)

Overrides:

equals in class LogicalNode

clone

public Object clone()
             throws CloneNotSupportedException

Overrides:

clone in class UnaryNode

Throws:

CloneNotSupportedException

toString

public String toString()

Overrides:

toString in class LogicalNode