org.apache.hadoop.hive.hbase.struct

Class HBaseStructValue

java.lang.Object

org.apache.hadoop.hive.serde2.lazy.LazyObject<OI>

org.apache.hadoop.hive.serde2.lazy.LazyNonPrimitive<LazySimpleStructObjectInspector>

org.apache.hadoop.hive.serde2.lazy.LazyStruct

org.apache.hadoop.hive.hbase.struct.HBaseStructValue

All Implemented Interfaces:

LazyObjectBase, SerDeStatsStruct, StructObject

public class HBaseStructValue
extends LazyStruct

This is an extension of LazyStruct. All value structs should extend this class and override the LazyStruct.getField(int) method where fieldID corresponds to the ID of a value in the value structure.

For example, for a value structure "/part1/part2/part3", part1 will have an id 0, part2 will have an id 1 and part3 will have an id 2. Custom implementations of getField(fieldID) should return the value corresponding to that fieldID. So, for the above example, the value returned for getField(0) should be part1, getField(1) should be part2 and getField(2) should be part3.

All implementation are expected to have a constructor of the form

 MyCustomStructObject(LazySimpleStructObjectInspector oi, Properties props, Configuration conf, ColumnMapping colMap)
 

Field Summary

Fields

Modifier and Type	Field and Description
protected String	familyName The column family name
protected String	qualifierName The column qualifier name

Fields inherited from class org.apache.hadoop.hive.serde2.lazy.LazyNonPrimitive

bytes, length, start

Fields inherited from class org.apache.hadoop.hive.serde2.lazy.LazyObject

isNull, oi

Constructor Summary

Constructors

Constructor and Description
HBaseStructValue(LazySimpleStructObjectInspector oi)

Method Summary

Modifier and Type	Method and Description
ArrayList<Object>	getFieldsAsList() Get the values of the fields as an ArrayList.
void	init(ByteArrayRef bytes, int start, int length, String familyName, String qualifierName) Set the row data for this LazyStruct.
LazyObject<? extends ObjectInspector>	toLazyObject(int fieldID, byte[] bytes) Create an initialize a LazyObject with the given bytes for the given fieldID.

Methods inherited from class org.apache.hadoop.hive.serde2.lazy.LazyStruct

createLazyField, getBytes, getField, getFieldInited, getFields, getParsed, getRawDataSerializedSize, init, initLazyFields, parseMultiDelimit, setFieldInited, setFields, setParsed

Methods inherited from class org.apache.hadoop.hive.serde2.lazy.LazyNonPrimitive

hashCode, isNull, isNull

Methods inherited from class org.apache.hadoop.hive.serde2.lazy.LazyObject

getInspector, getObject, setInspector, setNull

Methods inherited from class java.lang.Object

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

Field Detail

familyName

protected String familyName

The column family name

qualifierName

protected String qualifierName

The column qualifier name

Constructor Detail

HBaseStructValue

public HBaseStructValue(LazySimpleStructObjectInspector oi)

Method Detail

init

public void init(ByteArrayRef bytes,
                 int start,
                 int length,
                 String familyName,
                 String qualifierName)

Set the row data for this LazyStruct.

Parameters:

familyName - The column family name

qualifierName - The column qualifier name

See Also:

LazyObject.init(ByteArrayRef, int, int)

getFieldsAsList

public ArrayList<Object> getFieldsAsList()

Description copied from class: LazyStruct

Get the values of the fields as an ArrayList.

Specified by:

getFieldsAsList in interface StructObject

Overrides:

getFieldsAsList in class LazyStruct

Returns:

The values of the fields as an ArrayList.

toLazyObject

public LazyObject<? extends ObjectInspector> toLazyObject(int fieldID,
                                                          byte[] bytes)

Create an initialize a LazyObject with the given bytes for the given fieldID.

Parameters:

fieldID - field for which the object is to be created

bytes - value with which the object is to be initialized with

Returns:

initialized LazyObject