org.apache.tajo.plan.logical

Class UnaryNode

java.lang.Object

org.apache.tajo.plan.logical.LogicalNode

org.apache.tajo.plan.logical.UnaryNode

All Implemented Interfaces:

Cloneable, GsonObject

Direct Known Subclasses:

DistinctGroupbyNode, GroupbyNode, HavingNode, LimitNode, LogicalRootNode, PersistentStoreNode, ProjectionNode, SelectionNode, SortNode, WindowAggNode

public abstract class UnaryNode
extends LogicalNode
implements Cloneable

Constructor Summary

Constructors

Constructor and Description
UnaryNode(int pid, NodeType type)

Method Summary

Methods

Modifier and Type	Method and Description
int	childNum()
Object	clone()
boolean	deepEquals(Object o)
<T extends LogicalNode> T	getChild()
LogicalNode	getChild(int idx)
void	postOrder(LogicalNodeVisitor visitor)
void	preOrder(LogicalNodeVisitor visitor)
void	setChild(LogicalNode subNode)

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

UnaryNode

public UnaryNode(int pid,
         NodeType type)

Parameters:

type -

Method Detail

childNum

public int childNum()

Specified by:

childNum in class LogicalNode

getChild

public LogicalNode getChild(int idx)

Specified by:

getChild in class LogicalNode

setChild

public void setChild(LogicalNode subNode)

getChild

public <T extends LogicalNode> T getChild()

deepEquals

public boolean deepEquals(Object o)

Overrides:

deepEquals in class LogicalNode

clone

public Object clone()
             throws CloneNotSupportedException

Overrides:

clone in class LogicalNode

Throws:

CloneNotSupportedException

preOrder

public void preOrder(LogicalNodeVisitor visitor)

Specified by:

preOrder in class LogicalNode

postOrder

public void postOrder(LogicalNodeVisitor visitor)

Specified by:

postOrder in class LogicalNode