org.apache.tajo.plan.logical

Class EvalExprNode

java.lang.Object

org.apache.tajo.plan.logical.LogicalNode

org.apache.tajo.plan.logical.EvalExprNode

All Implemented Interfaces:

Cloneable, GsonObject, Projectable

public class EvalExprNode
extends LogicalNode
implements Projectable

Constructor Summary

Constructors

Constructor and Description
EvalExprNode(int pid)

Method Summary

Methods

Modifier and Type	Method and Description
int	childNum()
boolean	equals(Object object)
LogicalNode	getChild(int idx)
Target[]	getExprs()
PlanString	getPlanString()
Target[]	getTargets() Get a list of targets
boolean	hasTargets() check if this node has a target list
void	postOrder(LogicalNodeVisitor visitor)
void	preOrder(LogicalNodeVisitor visitor)
void	setTargets(Target[] targets) Set a target list
String	toString()

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

clone, deepEquals, 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

EvalExprNode

public EvalExprNode(int pid)

Method Detail

childNum

public int childNum()

Specified by:

childNum in class LogicalNode

getChild

public LogicalNode getChild(int idx)

Specified by:

getChild in class LogicalNode

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

getExprs

public Target[] getExprs()

toString

public String toString()

Overrides:

toString in class LogicalNode

equals

public boolean equals(Object object)

Overrides:

equals in class LogicalNode

preOrder

public void preOrder(LogicalNodeVisitor visitor)

Specified by:

preOrder in class LogicalNode

postOrder

public void postOrder(LogicalNodeVisitor visitor)

Specified by:

postOrder in class LogicalNode

getPlanString

public PlanString getPlanString()

Specified by:

getPlanString in class LogicalNode