Package org.apache.hadoop.hbase.util

Enum Class ChecksumType

java.lang.Object

java.lang.Enum<ChecksumType>

org.apache.hadoop.hbase.util.ChecksumType

All Implemented Interfaces:

Serializable, Comparable<ChecksumType>, Constable

@Private
public enum ChecksumType
extends Enum<ChecksumType>

Checksum types. The Checksum type is a one byte number that stores a representation of the checksum algorithm used to encode a hfile. The ordinal of these cannot change or else you risk breaking all existing HFiles out there.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
CRC32
CRC32C
NULL

Field Summary

Fields

Modifier and Type	Field	Description
private final byte	code

Constructor Summary

Constructors

Modifier	Constructor	Description
private	ChecksumType(byte c)

Method Summary

Modifier and Type	Method	Description
static ChecksumType	codeToType(byte b)	Cannot rely on enum ordinals .
byte	getCode()
abstract org.apache.hadoop.util.DataChecksum.Type	getDataChecksumType()	Function to get corresponding DataChecksum.Type.
static ChecksumType	getDefaultChecksumType()
abstract String	getName()	returns the name of this checksum type
static ChecksumType	nameToType(String name)	Map a checksum name to a specific type.
static ChecksumType	valueOf(String name)	Returns the enum constant of this class with the specified name.
static ChecksumType[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

NULL

public static final ChecksumType NULL

CRC32

public static final ChecksumType CRC32

CRC32C

public static final ChecksumType CRC32C

Field Details

code

private final byte code

Constructor Details

ChecksumType

private ChecksumType(byte c)

Method Details

values

public static ChecksumType[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static ChecksumType valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null

getDefaultChecksumType

public static ChecksumType getDefaultChecksumType()

getName

public abstract String getName()

returns the name of this checksum type

getDataChecksumType

public abstract org.apache.hadoop.util.DataChecksum.Type getDataChecksumType()

Function to get corresponding DataChecksum.Type.

getCode

public byte getCode()

codeToType

public static ChecksumType codeToType(byte b)

Cannot rely on enum ordinals . They change if item is removed or moved. Do our own codes.

Returns:

Type associated with passed code.

nameToType

public static ChecksumType nameToType(String name)

Map a checksum name to a specific type. Do our own names.

Returns:

Type associated with passed code.