com.datastax.driver.core.policies

Class RetryPolicy.RetryDecision

java.lang.Object

com.datastax.driver.core.policies.RetryPolicy.RetryDecision

Enclosing interface:

RetryPolicy

public static class RetryPolicy.RetryDecision
extends Object

A retry decision to adopt on a Cassandra exception (read/write timeout or unavailable exception).

There is three possible decision:

• RETHROW: no retry should be attempted and an exception should be thrown
• RETRY: the operation will be retried. The consistency level of the retry should be specified.
• IGNORE: no retry should be attempted and the exception should be ignored. In that case, the operation that triggered the Cassandra exception will return an empty result set.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	RetryPolicy.RetryDecision.Type The type of retry decisions.

Method Summary

Modifier and Type	Method and Description
ConsistencyLevel	getRetryConsistencyLevel() The consistency level for a retry decision.
RetryPolicy.RetryDecision.Type	getType() The type of this retry decision.
static RetryPolicy.RetryDecision	ignore() Creates an IGNORE retry decision.
boolean	isRetryCurrent() Whether the retry policy uses the same host for retry decision.
static RetryPolicy.RetryDecision	rethrow() Creates a RETHROW retry decision.
static RetryPolicy.RetryDecision	retry(ConsistencyLevel consistency) Creates a RETRY retry decision using the provided consistency level.
String	toString()
static RetryPolicy.RetryDecision	tryNextHost(ConsistencyLevel retryCL) Creates a RETRY retry decision and indicates to retry on another host using the provided consistency level.

Methods inherited from class java.lang.Object

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

Method Detail

getType

public RetryPolicy.RetryDecision.Type getType()

The type of this retry decision.

Returns:

the type of this retry decision.

getRetryConsistencyLevel

public ConsistencyLevel getRetryConsistencyLevel()

The consistency level for a retry decision.

Returns:

the consistency level for a retry decision or null if this retry decision is an IGNORE or a RETHROW.

isRetryCurrent

public boolean isRetryCurrent()

Whether the retry policy uses the same host for retry decision.

Returns:

the retry on next host boolean. Default is false.

rethrow

public static RetryPolicy.RetryDecision rethrow()

Creates a RETHROW retry decision.

Returns:

a RETHROW retry decision.

retry

public static RetryPolicy.RetryDecision retry(ConsistencyLevel consistency)

Creates a RETRY retry decision using the provided consistency level.

Parameters:

consistency - the consistency level to use for the retry.

Returns:

a RETRY with consistency level consistency retry decision.

ignore

public static RetryPolicy.RetryDecision ignore()

Creates an IGNORE retry decision.

Returns:

an IGNORE retry decision.

tryNextHost

public static RetryPolicy.RetryDecision tryNextHost(ConsistencyLevel retryCL)

Creates a RETRY retry decision and indicates to retry on another host using the provided consistency level.

Returns:

a RETRY retry decision.

toString

public String toString()

Overrides:

toString in class Object