org.apache.hadoop.hbase.types

Class OrderedBlob

java.lang.Object

org.apache.hadoop.hbase.types.OrderedBytesBase<byte[]>

org.apache.hadoop.hbase.types.OrderedBlob

All Implemented Interfaces:

DataType<byte[]>

@InterfaceAudience.Public
@InterfaceStability.Evolving
public class OrderedBlob
extends OrderedBytesBase<byte[]>

A byte[] of variable-length. Build on OrderedBytes.encodeBlobCopy(PositionedByteRange, byte[], int, int, Order).

Field Summary

Fields

Modifier and Type	Field and Description
static OrderedBlob	ASCENDING
static OrderedBlob	DESCENDING

Fields inherited from class org.apache.hadoop.hbase.types.OrderedBytesBase

order

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	OrderedBlob(Order order)

Method Summary

Methods

Modifier and Type	Method and Description
byte[]	decode(PositionedByteRange src) Read an instance of T from the buffer src.
int	encode(PositionedByteRange dst, byte[] val) Write instance val into buffer dst.
int	encode(PositionedByteRange dst, byte[] val, int voff, int vlen) Write a subset of val to dst.
Class<byte[]>	encodedClass() Inform consumers over what type this DataType operates.
int	encodedLength(byte[] val) Inform consumers how long the encoded byte[] will be.
boolean	isSkippable() Indicates whether this instance is able to skip over it's encoded value.

Methods inherited from class org.apache.hadoop.hbase.types.OrderedBytesBase

getOrder, isNullable, isOrderPreserving, skip

Methods inherited from class java.lang.Object

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

Field Detail

ASCENDING

public static final OrderedBlob ASCENDING

DESCENDING

public static final OrderedBlob DESCENDING

Constructor Detail

OrderedBlob

protected OrderedBlob(Order order)

Method Detail

isSkippable

public boolean isSkippable()

Description copied from interface: DataType

Indicates whether this instance is able to skip over it's encoded value. DataTypes that are not skippable can only be used as the right-most field of a Struct.

Specified by:

isSkippable in interface DataType<byte[]>

Overrides:

isSkippable in class OrderedBytesBase<byte[]>

encodedLength

public int encodedLength(byte[] val)

Description copied from interface: DataType

Inform consumers how long the encoded byte[] will be.

Parameters:

val - The value to check.

Returns:

the number of bytes required to encode val.a

encodedClass

public Class<byte[]> encodedClass()

Description copied from interface: DataType

Inform consumers over what type this DataType operates. Useful when working with bare DataType instances.

decode

public byte[] decode(PositionedByteRange src)

Description copied from interface: DataType

Read an instance of T from the buffer src.

Parameters:

src - the buffer containing the encoded value.

encode

public int encode(PositionedByteRange dst,
         byte[] val)

Description copied from interface: DataType

Write instance val into buffer dst.

Parameters:

dst - the buffer containing the encoded value.

val - the value to encode onto dst.

Returns:

number of bytes written.

encode

public int encode(PositionedByteRange dst,
         byte[] val,
         int voff,
         int vlen)

Write a subset of val to dst.