com.datastax.driver.core

Enum ConsistencyLevel

java.lang.Object

java.lang.Enum<ConsistencyLevel>

com.datastax.driver.core.ConsistencyLevel

All Implemented Interfaces:

Serializable, Comparable<ConsistencyLevel>

public enum ConsistencyLevel
extends Enum<ConsistencyLevel>

Enum Constant Summary

Enum Constants

Enum Constant and Description
ALL
ANY
EACH_QUORUM
LOCAL_ONE
LOCAL_QUORUM
LOCAL_SERIAL
ONE
QUORUM
SERIAL
THREE
TWO

Method Summary

Modifier and Type	Method and Description
boolean	isDCLocal() Whether or not this consistency level applies to the local data-center only.
boolean	isSerial() Whether or not this consistency level is serial, that is, applies only to the "paxos" phase of a Lightweight transaction.
static ConsistencyLevel	valueOf(String name) Returns the enum constant of this type with the specified name.
static ConsistencyLevel[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

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

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

ANY

public static final ConsistencyLevel ANY

ONE

public static final ConsistencyLevel ONE

TWO

public static final ConsistencyLevel TWO

THREE

public static final ConsistencyLevel THREE

QUORUM

public static final ConsistencyLevel QUORUM

ALL

public static final ConsistencyLevel ALL

LOCAL_QUORUM

public static final ConsistencyLevel LOCAL_QUORUM

EACH_QUORUM

public static final ConsistencyLevel EACH_QUORUM

SERIAL

public static final ConsistencyLevel SERIAL

LOCAL_SERIAL

public static final ConsistencyLevel LOCAL_SERIAL

LOCAL_ONE

public static final ConsistencyLevel LOCAL_ONE

Method Detail

values

public static ConsistencyLevel[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (ConsistencyLevel c : ConsistencyLevel.values())
    System.out.println(c);

Returns:

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

valueOf

public static ConsistencyLevel valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (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 type has no constant with the specified name

NullPointerException - if the argument is null

isDCLocal

public boolean isDCLocal()

Whether or not this consistency level applies to the local data-center only.

Returns:

whether this consistency level is LOCAL_ONE or LOCAL_QUORUM.

isSerial

public boolean isSerial()

Whether or not this consistency level is serial, that is, applies only to the "paxos" phase of a Lightweight transaction.

Serial consistency levels are only meaningful when executing conditional updates (INSERT, UPDATE or DELETE statements with an IF condition).

Two consistency levels belong to this category: SERIAL and LOCAL_SERIAL.

Returns:

whether this consistency level is SERIAL or LOCAL_SERIAL.

See Also:

Statement.setSerialConsistencyLevel(ConsistencyLevel), Lightweight transactions