org.apache.hadoop.hive.serde2.lazybinary

Class LazyBinaryArray

java.lang.Object

org.apache.hadoop.hive.serde2.lazybinary.LazyBinaryObject<OI>

org.apache.hadoop.hive.serde2.lazybinary.LazyBinaryNonPrimitive<LazyBinaryListObjectInspector>

org.apache.hadoop.hive.serde2.lazybinary.LazyBinaryArray

All Implemented Interfaces:

LazyObjectBase

public class LazyBinaryArray
extends LazyBinaryNonPrimitive<LazyBinaryListObjectInspector>

LazyBinaryArray is serialized as follows: start A b b b b b b end bytes[] -> |--------|---|---|---|---| ... |---|---| Section A is the null-bytes. Suppose the list has N elements, then there are (N+7)/8 bytes used as null-bytes. Each bit corresponds to an element and it indicates whether that element is null (0) or not null (1). After A, all b(s) represent the elements of the list. Each of them is again a LazyBinaryObject.

Field Summary

Fields inherited from class org.apache.hadoop.hive.serde2.lazybinary.LazyBinaryNonPrimitive

bytes, length, start

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	LazyBinaryArray(LazyBinaryListObjectInspector oi) Construct a LazyBinaryArray object with the ObjectInspector.

Method Summary

Modifier and Type	Method and Description
List<Object>	getList() Returns the List of actual primitive objects.
Object	getListElementObject(int index) Returns the actual primitive object at the index position inside the array represented by this LazyBinaryObject.
int	getListLength() Returns the array size.
void	init(ByteArrayRef bytes, int start, int length) Set the row data for this LazyBinaryArray.

Methods inherited from class org.apache.hadoop.hive.serde2.lazybinary.LazyBinaryNonPrimitive

getObject, hashCode

Methods inherited from class org.apache.hadoop.hive.serde2.lazybinary.LazyBinaryObject

setNull

Methods inherited from class java.lang.Object

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

Constructor Detail

LazyBinaryArray

protected LazyBinaryArray(LazyBinaryListObjectInspector oi)

Construct a LazyBinaryArray object with the ObjectInspector.

Parameters:

oi - the oi representing the type of this LazyBinaryArray

Method Detail

init

public void init(ByteArrayRef bytes,
                 int start,
                 int length)

Set the row data for this LazyBinaryArray.

Specified by:

init in interface LazyObjectBase

Overrides:

init in class LazyBinaryNonPrimitive<LazyBinaryListObjectInspector>

Parameters:

bytes - The wrapper of the byte[].

start - The start position inside the bytes.

length - The length of the data, starting from "start"

See Also:

LazyObject.init(ByteArrayRef, int, int)

getListElementObject

public Object getListElementObject(int index)

Returns the actual primitive object at the index position inside the array represented by this LazyBinaryObject.

getListLength

public int getListLength()

Returns the array size.

getList

public List<Object> getList()

Returns the List of actual primitive objects. Returns null for null array.