Package com.linkedin.venice.meta

Enum Class PersistenceType

java.lang.Object

java.lang.Enum<PersistenceType>

com.linkedin.venice.meta.PersistenceType

All Implemented Interfaces:

Serializable, Comparable<PersistenceType>, Constable

public enum PersistenceType
extends Enum<PersistenceType>

Enums of persistence types in Venice.

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
BDB	Persistent storage engine that writes to durable media and maintains a B+ tree in the Java heap.
BLACK_HOLE	Fastest lock-free most secure of all storage engines.
CACHE	Similar to IN_MEMORY but with different retention rules of data (that is, data is evicted under certain circumstances)
IN_MEMORY	Volatile storage engine based on a simple Java ConcurrentHashMap.
ROCKS_DB	Persistent storage engine that writes to durable media and maintains an off-heap in-memory index.

Field Summary

Fields

Modifier and Type	Field	Description
final int	value

Method Summary

Modifier and Type	Method	Description
static PersistenceType	getPersistenceTypeFromInt(int i)
static PersistenceType	valueOf(String name)	Returns the enum constant of this class with the specified name.
static PersistenceType[]	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

IN_MEMORY

public static final PersistenceType IN_MEMORY

Volatile storage engine based on a simple Java ConcurrentHashMap.

BDB

public static final PersistenceType BDB

Persistent storage engine that writes to durable media and maintains a B+ tree in the Java heap.

ROCKS_DB

public static final PersistenceType ROCKS_DB

Persistent storage engine that writes to durable media and maintains an off-heap in-memory index.

BLACK_HOLE

public static final PersistenceType BLACK_HOLE

Fastest lock-free most secure of all storage engines. Ignores data put in it, always returns null.

CACHE

public static final PersistenceType CACHE

Similar to IN_MEMORY but with different retention rules of data (that is, data is evicted under certain circumstances)

Field Details

value

public final int value

Method Details

values

public static PersistenceType[] 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 PersistenceType 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

getPersistenceTypeFromInt

public static PersistenceType getPersistenceTypeFromInt(int i)