com.datastax.driver.core.exceptions
Class UnavailableException

java.lang.Object
  java.lang.Throwable
      java.lang.Exception
          java.lang.RuntimeException
              com.datastax.driver.core.exceptions.DriverException
                  com.datastax.driver.core.exceptions.QueryExecutionException
                      com.datastax.driver.core.exceptions.UnavailableException

All Implemented Interfaces:

Serializable

public class UnavailableException
extends QueryExecutionException

Exception thrown when the coordinator knows there is not enough replica alive to perform a query with the requested consistency level.

See Also:

Serialized Form

Constructor Summary

UnavailableException(ConsistencyLevel consistency, int required, int alive)

Method Summary

DriverException	copy() Copy the exception.
int	getAliveReplicas() The number of replica that were known to be alive by the Cassandra coordinator node when it tried to execute the operation.
ConsistencyLevel	getConsistency() The consistency level of the operation triggering this unavailable exception.
int	getRequiredReplicas() The number of replica acknowledgements/responses required to perform the operation (with its required consistency level).

Methods inherited from class java.lang.Throwable

fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

UnavailableException

public UnavailableException(ConsistencyLevel consistency,
                            int required,
                            int alive)

Method Detail

getConsistency

public ConsistencyLevel getConsistency()

The consistency level of the operation triggering this unavailable exception.

Returns:

the consistency level of the operation triggering this unavailable exception.

getRequiredReplicas

public int getRequiredReplicas()

The number of replica acknowledgements/responses required to perform the operation (with its required consistency level).

Returns:

the number of replica acknowledgements/responses required to perform the operation.

getAliveReplicas

public int getAliveReplicas()

The number of replica that were known to be alive by the Cassandra coordinator node when it tried to execute the operation.

Returns:

The number of replica that were known to be alive by the Cassandra coordinator node when it tried to execute the operation.

copy

public DriverException copy()

Description copied from class: DriverException

Copy the exception.

This return a new exception, equivalent to the original one, except that because a new object is created in the current thread, the top-most element in the stacktrace of the exception will refer to the current thread (this mainly use for internal use by the driver). The cause of the copied exception will be the original exception.

Specified by:

copy in class DriverException

Returns:

a copy/clone of this exception.