com.datastax.oss.driver.api.core

Interface ConsistencyLevel

All Known Implementing Classes:

DefaultConsistencyLevel

public interface ConsistencyLevel

The consistency level of a request.

The only reason to model this as an interface (as opposed to an enum type) is to accommodate for custom protocol extensions. If you're connecting to a standard Apache Cassandra cluster, all ConsistencyLevels are DefaultConsistencyLevel instances.

Field Summary

Fields

Modifier and Type	Field and Description
static ConsistencyLevel	ALL
static ConsistencyLevel	ANY
static ConsistencyLevel	EACH_QUORUM
static ConsistencyLevel	LOCAL_ONE
static ConsistencyLevel	LOCAL_QUORUM
static ConsistencyLevel	LOCAL_SERIAL
static ConsistencyLevel	ONE
static ConsistencyLevel	QUORUM
static ConsistencyLevel	SERIAL
static ConsistencyLevel	THREE
static ConsistencyLevel	TWO

Method Summary

Modifier and Type	Method and Description
int	getProtocolCode() The numerical value that the level is encoded to in protocol frames.
boolean	isDcLocal() Whether this consistency level applies to the local datacenter only.
boolean	isSerial() Whether this consistency level is serial, that is, applies only to the "paxos" phase of a lightweight transaction.
String	name() The textual representation of the level in configuration files.

Field Detail

ANY

static final ConsistencyLevel ANY

ONE

static final ConsistencyLevel ONE

TWO

static final ConsistencyLevel TWO

THREE

static final ConsistencyLevel THREE

QUORUM

static final ConsistencyLevel QUORUM

ALL

static final ConsistencyLevel ALL

LOCAL_ONE

static final ConsistencyLevel LOCAL_ONE

LOCAL_QUORUM

static final ConsistencyLevel LOCAL_QUORUM

EACH_QUORUM

static final ConsistencyLevel EACH_QUORUM

SERIAL

static final ConsistencyLevel SERIAL

LOCAL_SERIAL

static final ConsistencyLevel LOCAL_SERIAL

Method Detail

getProtocolCode

int getProtocolCode()

The numerical value that the level is encoded to in protocol frames.

name

@NonNull
String name()

The textual representation of the level in configuration files.

isDcLocal

boolean isDcLocal()

Whether this consistency level applies to the local datacenter only.

isSerial

boolean isSerial()

Whether 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).