org.apache.hadoop.hive.serde2.objectinspector

Class MetadataListStructObjectInspector

java.lang.Object

org.apache.hadoop.hive.serde2.objectinspector.StructObjectInspector

org.apache.hadoop.hive.serde2.objectinspector.SettableStructObjectInspector

org.apache.hadoop.hive.serde2.objectinspector.StandardStructObjectInspector

org.apache.hadoop.hive.serde2.objectinspector.MetadataListStructObjectInspector

All Implemented Interfaces:

Cloneable, ObjectInspector

public class MetadataListStructObjectInspector
extends StandardStructObjectInspector

StructObjectInspector works on struct data that is stored as a Java List or Java Array object. Basically, the fields are stored sequentially in the List object. The names of the struct fields and the internal structure of the struct fields are specified in the ctor of the StructObjectInspector.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hive.serde2.objectinspector.StandardStructObjectInspector

StandardStructObjectInspector.MyField

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

ObjectInspector.Category

Field Summary

Fields inherited from class org.apache.hadoop.hive.serde2.objectinspector.StandardStructObjectInspector

fields, LOG, originalColumnNames

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	MetadataListStructObjectInspector()
	MetadataListStructObjectInspector(List<String> columnNames, List<String> columnComments)

Method Summary

Modifier and Type	Method and Description
static MetadataListStructObjectInspector	getInstance(List<String> columnNames)
static MetadataListStructObjectInspector	getInstance(List<String> columnNames, List<String> columnComments)
Object	getStructFieldData(Object data, StructField fieldRef) returns null for data = null.
List<Object>	getStructFieldsDataAsList(Object data) returns null for data = null.

Methods inherited from class org.apache.hadoop.hive.serde2.objectinspector.StandardStructObjectInspector

create, getAllStructFieldRefs, getCategory, getOriginalColumnNames, getStructFieldRef, getTypeName, init, init, setStructFieldData

Methods inherited from class org.apache.hadoop.hive.serde2.objectinspector.SettableStructObjectInspector

isSettable

Methods inherited from class org.apache.hadoop.hive.serde2.objectinspector.StructObjectInspector

toString

Methods inherited from class java.lang.Object

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

Constructor Detail

MetadataListStructObjectInspector

protected MetadataListStructObjectInspector()

MetadataListStructObjectInspector

public MetadataListStructObjectInspector(List<String> columnNames,
                                         List<String> columnComments)

Method Detail

getInstance

public static MetadataListStructObjectInspector getInstance(List<String> columnNames)

getInstance

public static MetadataListStructObjectInspector getInstance(List<String> columnNames,
                                                            List<String> columnComments)

getStructFieldData

public Object getStructFieldData(Object data,
                                 StructField fieldRef)

Description copied from class: StructObjectInspector

returns null for data = null.

Overrides:

getStructFieldData in class StandardStructObjectInspector

getStructFieldsDataAsList

public List<Object> getStructFieldsDataAsList(Object data)

Description copied from class: StructObjectInspector

returns null for data = null.

Overrides:

getStructFieldsDataAsList in class StandardStructObjectInspector