org.apache.hadoop.hive.serde2.objectinspector

Class DelegatedMapObjectInspector

java.lang.Object

org.apache.hadoop.hive.serde2.objectinspector.DelegatedMapObjectInspector

All Implemented Interfaces:

java.lang.Cloneable, MapObjectInspector, ObjectInspector

public class DelegatedMapObjectInspector
extends java.lang.Object
implements MapObjectInspector

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector

ObjectInspector.Category

Constructor Summary

Constructors

Constructor and Description
DelegatedMapObjectInspector(MapObjectInspector delegate)

Method Summary

Modifier and Type	Method and Description
ObjectInspector.Category	getCategory() An ObjectInspector must inherit from one of the following interfaces if getCategory() returns: PRIMITIVE: PrimitiveObjectInspector LIST: ListObjectInspector MAP: MapObjectInspector STRUCT: StructObjectInspector.
java.util.Map<?,?>	getMap(java.lang.Object data) returns null for data = null.
ObjectInspector	getMapKeyObjectInspector()
int	getMapSize(java.lang.Object data) returns -1 for NULL map.
java.lang.Object	getMapValueElement(java.lang.Object data, java.lang.Object key)
ObjectInspector	getMapValueObjectInspector()
java.lang.String	getTypeName() Returns the name of the data type that is inspected by this ObjectInspector.
void	reset(MapObjectInspector current)

Methods inherited from class java.lang.Object

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

Constructor Detail

DelegatedMapObjectInspector

public DelegatedMapObjectInspector(MapObjectInspector delegate)

Method Detail

reset

public void reset(MapObjectInspector current)

getMapKeyObjectInspector

public ObjectInspector getMapKeyObjectInspector()

Specified by:

getMapKeyObjectInspector in interface MapObjectInspector

getMapValueObjectInspector

public ObjectInspector getMapValueObjectInspector()

Specified by:

getMapValueObjectInspector in interface MapObjectInspector

getMapValueElement

public java.lang.Object getMapValueElement(java.lang.Object data,
                                           java.lang.Object key)

Specified by:

getMapValueElement in interface MapObjectInspector

getMap

public java.util.Map<?,?> getMap(java.lang.Object data)

Description copied from interface: MapObjectInspector

returns null for data = null. Note: This method should not return a Map object that is reused by the same MapObjectInspector, because it's possible that the same MapObjectInspector will be used in multiple places in the code. However it's OK if the Map object is part of the Object data.

Specified by:

getMap in interface MapObjectInspector

getMapSize

public int getMapSize(java.lang.Object data)

Description copied from interface: MapObjectInspector

returns -1 for NULL map.

Specified by:

getMapSize in interface MapObjectInspector

getTypeName

public java.lang.String getTypeName()

Description copied from interface: ObjectInspector

Returns the name of the data type that is inspected by this ObjectInspector. This is used to display the type information to the user. For primitive types, the type name is standardized. For other types, the type name can be something like "list", "map", java class names, or user-defined type names similar to typedef.

Specified by:

getTypeName in interface ObjectInspector

getCategory

public ObjectInspector.Category getCategory()

Description copied from interface: ObjectInspector

An ObjectInspector must inherit from one of the following interfaces if getCategory() returns: PRIMITIVE: PrimitiveObjectInspector LIST: ListObjectInspector MAP: MapObjectInspector STRUCT: StructObjectInspector.

Specified by:

getCategory in interface ObjectInspector