org.apache.tajo.plan.logical

Class ProjectionNode

java.lang.Object

org.apache.tajo.plan.logical.LogicalNode

org.apache.tajo.plan.logical.UnaryNode

org.apache.tajo.plan.logical.ProjectionNode

All Implemented Interfaces:

Cloneable, GsonObject, Projectable

public class ProjectionNode
extends UnaryNode
implements Projectable

Constructor Summary

Constructors

Constructor and Description
ProjectionNode(int pid)

Method Summary

Methods

Modifier and Type	Method and Description
Object	clone()
boolean	equals(Object obj)
PlanString	getPlanString()
Target[]	getTargets() Get a list of targets
boolean	hasTargets() check if this node has a target list
void	init(boolean distinct, Target[] targets)
boolean	isDistinct()
void	setChild(LogicalNode subNode)
void	setTargets(Target[] targets) Set a target list
String	toString()

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

childNum, deepEquals, getChild, getChild, postOrder, preOrder

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

Methods inherited from interface org.apache.tajo.plan.logical.Projectable

getInSchema, getOutSchema, getPID

Constructor Detail

ProjectionNode

public ProjectionNode(int pid)

Method Detail

init

public void init(boolean distinct,
        Target[] targets)

isDistinct

public boolean isDistinct()

hasTargets

public boolean hasTargets()

Description copied from interface: Projectable

check if this node has a target list

Specified by:

hasTargets in interface Projectable

Returns:

TRUE if this node has a target list. Otherwise, FALSE.

setTargets

public void setTargets(Target[] targets)

Description copied from interface: Projectable

Set a target list

Specified by:

setTargets in interface Projectable

Parameters:

targets - The array of targets

getTargets

public Target[] getTargets()

Description copied from interface: Projectable

Get a list of targets

Specified by:

getTargets in interface Projectable

Returns:

The array of targets

setChild

public void setChild(LogicalNode subNode)

Overrides:

setChild in class UnaryNode

toString

public String toString()

Overrides:

toString 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

getPlanString

public PlanString getPlanString()

Specified by:

getPlanString in class LogicalNode