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, ExprNodeColumnListDesc, ExprNodeConstantDesc, ExprNodeDynamicListDesc, ExprNodeFieldDesc, ExprNodeGenericFuncDesc

public abstract class ExprNodeDesc
extends Object
implements Serializable, Node

ExprNodeDesc.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ExprNodeDesc.ExprNodeDescEqualityWrapper

Field Summary

Fields

Modifier and Type	Field and Description
protected TypeInfo	typeInfo

Constructor Summary

Constructors

Constructor and Description
ExprNodeDesc()
ExprNodeDesc(TypeInfo typeInfo)

Method Summary

Methods

Modifier and Type	Method and Description
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()
int	hashCode()
abstract boolean	isSame(Object o)
void	setTypeInfo(TypeInfo typeInfo)

Methods inherited from class java.lang.Object

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

Field Detail

typeInfo

protected TypeInfo typeInfo

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)

hashCode

public int hashCode()

Overrides:

hashCode in class Object

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