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.

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.

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).