org.objectweb.cjdbc.driver.connectpolicy
Class RoundRobinConnectPolicy

java.lang.Object
  org.objectweb.cjdbc.driver.connectpolicy.AbstractControllerConnectPolicy
      org.objectweb.cjdbc.driver.connectpolicy.RoundRobinConnectPolicy

public class RoundRobinConnectPolicy

extends AbstractControllerConnectPolicy

This class defines a RoundRobinConnectPolicy used when the C-JDBC URL has the following form: jdbc:cjdbc://node1,node2,node3/myDB?preferredController=roundRobin

Round robin starts with the first node in URL.

Version:

1.0

Author:

Emmanuel Cecchet

Field Summary

private int

index

Fields inherited from class org.objectweb.cjdbc.driver.connectpolicy.AbstractControllerConnectPolicy

controllerList, debugLevel, suspectedControllers

Constructor Summary

RoundRobinConnectPolicy(ControllerInfo[] controllerList, long retryIntervalInMs, int debugLevel)
Creates a new RandomConnectPolicy object

Method Summary

ControllerInfo

getController() Get a controller using the implementation specific policy

Methods inherited from class org.objectweb.cjdbc.driver.connectpolicy.AbstractControllerConnectPolicy

finalize, getControllerList, getSuspectedControllers, isSuspectedOfFailure, removeControllerFromSuspectList, setControllerList, suspectControllerOfFailure

Methods inherited from class java.lang.Object

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

Field Detail

index

private int index

Constructor Detail

RoundRobinConnectPolicy

public RoundRobinConnectPolicy(ControllerInfo[] controllerList,
                               long retryIntervalInMs,
                               int debugLevel)

Creates a new RandomConnectPolicy object

Parameters:

controllerList - list of controller from C-JDBC url

retryIntervalInMs - Interval in milliseconds before retrying to re-connect to a controller that has failed

debugLevel - the debug level to use

See Also:

CjdbcUrl.DEBUG_LEVEL_OFF

Method Detail

getController

public ControllerInfo getController()
                             throws NoMoreControllerException

Description copied from class: AbstractControllerConnectPolicy

Get a controller using the implementation specific policy

Specified by:

getController in class AbstractControllerConnectPolicy

Returns:

ControllerInfo of the selected controller

Throws:

NoMoreControllerException - if no controller in the controller list is reachable

See Also:

AbstractControllerConnectPolicy.getController()