org.apache.hadoop.hive.ql.plan
Class ExprNodeDesc

java.lang.Object
  org.apache.hadoop.hive.ql.plan.ExprNodeDesc

All Implemented Interfaces:

Serializable, Node

Direct Known Subclasses:

ExprNodeColumnDesc, ExprNodeConstantDesc, ExprNodeFieldDesc, ExprNodeGenericFuncDesc, ExprNodeNullDesc

public abstract class ExprNodeDesc
extends Object
implements Serializable, Node

ExprNodeDesc.

See Also:

Serialized Form

Nested Class Summary

static class

ExprNodeDesc.ExprNodeDescEqualityWrapper

Constructor Summary

ExprNodeDesc()

ExprNodeDesc(TypeInfo typeInfo)

Method Summary

abstract ExprNodeDesc	clone()
List<ExprNodeDesc>	getChildren() Gets the vector of children nodes.
List<String>	getCols()
String	getExprString()
String	getName() Gets the name of the node.
TypeInfo	getTypeInfo()
String	getTypeString()
ObjectInspector	getWritableObjectInspector()
abstract boolean	isSame(Object o)
void	setTypeInfo(TypeInfo typeInfo)

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ExprNodeDesc

public ExprNodeDesc()

ExprNodeDesc

public ExprNodeDesc(TypeInfo typeInfo)

Method Detail

clone

public abstract ExprNodeDesc clone()

Overrides:

clone in class Object

isSame

public abstract boolean isSame(Object o)

getTypeInfo

public TypeInfo getTypeInfo()

setTypeInfo

public void setTypeInfo(TypeInfo typeInfo)

getExprString

public String getExprString()

getWritableObjectInspector

public ObjectInspector getWritableObjectInspector()

getTypeString

public String getTypeString()

getCols

public List<String> getCols()

getChildren

public List<ExprNodeDesc> getChildren()

Description copied from interface: Node

Gets the vector of children nodes. This is used in the graph walker algorithms.

Specified by:

getChildren in interface Node

Returns:

List

getName

public String getName()

Description copied from interface: Node

Gets the name of the node. This is used in the rule dispatchers.

Specified by:

getName in interface Node

Returns:

String