org.apache.hadoop.hive.serde2.typeinfo

Class MapTypeInfo

java.lang.Object

org.apache.hadoop.hive.serde2.typeinfo.TypeInfo

org.apache.hadoop.hive.serde2.typeinfo.MapTypeInfo

All Implemented Interfaces:

Serializable

public final class MapTypeInfo
extends TypeInfo
implements Serializable

A Map Type has homogeneous keys and homogeneous values. All keys of the Map have the same TypeInfo, which is returned by getMapKeyTypeInfo(); and all values of the Map has the same TypeInfo, which is returned by getMapValueTypeInfo(). Always use the TypeInfoFactory to create new TypeInfo objects, instead of directly creating an instance of this class.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
MapTypeInfo() For java serialization use only.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object other)
ObjectInspector.Category	getCategory() The Category of this TypeInfo.
TypeInfo	getMapKeyTypeInfo()
TypeInfo	getMapValueTypeInfo()
String	getTypeName() A String representation of the TypeInfo.
int	hashCode()
void	setMapKeyTypeInfo(TypeInfo mapKeyTypeInfo) For java serialization use only.
void	setMapValueTypeInfo(TypeInfo mapValueTypeInfo) For java serialization use only.

Methods inherited from class org.apache.hadoop.hive.serde2.typeinfo.TypeInfo

accept, getQualifiedName, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

MapTypeInfo

public MapTypeInfo()

For java serialization use only.

Method Detail

getTypeName

public String getTypeName()

Description copied from class: TypeInfo

A String representation of the TypeInfo.

Specified by:

getTypeName in class TypeInfo

setMapKeyTypeInfo

public void setMapKeyTypeInfo(TypeInfo mapKeyTypeInfo)

For java serialization use only.

setMapValueTypeInfo

public void setMapValueTypeInfo(TypeInfo mapValueTypeInfo)

For java serialization use only.

getCategory

public ObjectInspector.Category getCategory()

Description copied from class: TypeInfo

The Category of this TypeInfo. Possible values are Primitive, List, Map, Struct and Union, which corresponds to the 5 sub-classes of TypeInfo.

Specified by:

getCategory in class TypeInfo

getMapKeyTypeInfo

public TypeInfo getMapKeyTypeInfo()

getMapValueTypeInfo

public TypeInfo getMapValueTypeInfo()

equals

public boolean equals(Object other)

Specified by:

equals in class TypeInfo

hashCode

public int hashCode()

Specified by:

hashCode in class TypeInfo