org.apache.hadoop.hive.serde2.objectinspector

Interface MapObjectInspector

All Superinterfaces:

Cloneable, ObjectInspector

All Known Subinterfaces:

SettableMapObjectInspector

All Known Implementing Classes:

AbstractParquetMapInspector, DeepParquetHiveMapInspector, LazyBinaryMapObjectInspector, LazyMapObjectInspector, StandardConstantMapObjectInspector, StandardMapObjectInspector, StandardParquetHiveMapInspector

@InterfaceAudience.Public
 @InterfaceStability.Stable
public interface MapObjectInspector
extends ObjectInspector

MapObjectInspector.

Nested Class Summary

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

ObjectInspector.Category

Method Summary

Modifier and Type	Method and Description
Map<?,?>	getMap(Object data) returns null for data = null.
ObjectInspector	getMapKeyObjectInspector()
int	getMapSize(Object data) returns -1 for NULL map.
Object	getMapValueElement(Object data, Object key)
ObjectInspector	getMapValueObjectInspector()

Methods inherited from interface org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector

getCategory, getTypeName

Method Detail

getMapKeyObjectInspector

ObjectInspector getMapKeyObjectInspector()

getMapValueObjectInspector

ObjectInspector getMapValueObjectInspector()

getMapValueElement

Object getMapValueElement(Object data,
                          Object key)

getMap

Map<?,?> getMap(Object data)

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.

getMapSize

int getMapSize(Object data)

returns -1 for NULL map.