org.apache.hadoop.hbase.types

Class OrderedInt8

java.lang.Object

org.apache.hadoop.hbase.types.OrderedBytesBase<Byte>

org.apache.hadoop.hbase.types.OrderedInt8

All Implemented Interfaces:

DataType<Byte>

@InterfaceAudience.Public
public class OrderedInt8
extends OrderedBytesBase<Byte>

A byte of 8-bits using a fixed-length encoding. Built on OrderedBytes.encodeInt8(PositionedByteRange, byte, Order).

Field Summary

Fields

Modifier and Type	Field and Description
static OrderedInt8	ASCENDING
static OrderedInt8	DESCENDING

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

order

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	OrderedInt8(Order order)

Method Summary

Modifier and Type	Method and Description
Byte	decode(PositionedByteRange src) Read an instance of T from the buffer src.
byte	decodeByte(PositionedByteRange src) Read a byte value from the buffer src.
int	encode(PositionedByteRange dst, Byte val) Write instance val into buffer dst.
int	encodeByte(PositionedByteRange dst, byte val) Write instance val into buffer 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	isNullable() Indicates whether this instance supports encoding null values.

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

getOrder, isOrderPreserving, isSkippable, 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 OrderedInt8 ASCENDING

DESCENDING

public static final OrderedInt8 DESCENDING

Constructor Detail

OrderedInt8

protected OrderedInt8(Order order)

Method Detail

isNullable

public boolean isNullable()

Description copied from interface: DataType

Indicates whether this instance supports encoding null values. This depends on the implementation details of the encoding format. All DataTypes that support null should treat null as comparing less than any non-null value for default sort ordering purposes.

Specified by:

isNullable in interface DataType<Byte>

Overrides:

isNullable in class OrderedBytesBase<Byte>

Returns:

true when null is supported, false otherwise.

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.

decodeByte

public byte decodeByte(PositionedByteRange src)

Read a byte value from the buffer src.

encodeByte

public int encodeByte(PositionedByteRange dst,
                      byte val)

Write instance val into buffer dst.