org.objectweb.cjdbc.controller.loadbalancer.policies.createtable
Class CreateTableRandom

java.lang.Object
  org.objectweb.cjdbc.controller.loadbalancer.policies.createtable.CreateTableRule
      org.objectweb.cjdbc.controller.loadbalancer.policies.createtable.CreateTableRandom

public class CreateTableRandom

extends CreateTableRule

Implements a random strategy for CREATE TABLE statements.

Version:

1.0

Author:

Emmanuel Cecchet, Jean-Bernard van Zuylen

Field Summary

private java.util.Random

random

Fields inherited from class org.objectweb.cjdbc.controller.loadbalancer.policies.createtable.CreateTableRule

backendList, nbOfNodes, policy, tableName

Constructor Summary

CreateTableRandom()
Creates a new CreateTableRandom.

CreateTableRandom(java.util.ArrayList backendList)
Creates a new CreateTableRandom.

Method Summary

java.util.ArrayList	getBackends(java.util.ArrayList backends) Pickups backends from the given backends arraylist according to the current rule policy.
java.lang.String	getInformation() Gives information about the current policy.

Methods inherited from class org.objectweb.cjdbc.controller.loadbalancer.policies.createtable.CreateTableRule

addBackendName, getBackendList, getNumberOfNodes, getPolicy, getTableName, getXml, isDefaultRule, setNumberOfNodes, setPolicy, setTableName

Methods inherited from class java.lang.Object

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

Field Detail

random

private java.util.Random random

Constructor Detail

CreateTableRandom

public CreateTableRandom()

Creates a new CreateTableRandom.

CreateTableRandom

public CreateTableRandom(java.util.ArrayList backendList)

Creates a new CreateTableRandom.

Parameters:

backendList - ArrayList of DatabaseBackend

Method Detail

getBackends

public java.util.ArrayList getBackends(java.util.ArrayList backends)
                                throws CreateTableException

Description copied from class: CreateTableRule

Pickups backends from the given backends arraylist according to the current rule policy.

Overrides:

getBackends in class CreateTableRule

Parameters:

backends - backends to choose from

Returns:

Arraylist of choosen DatabaseBackend

Throws:

CreateTableException - in some specific implementations (not this one)

See Also:

CreateTableRule.getBackends(ArrayList)

getInformation

public java.lang.String getInformation()

Description copied from class: CreateTableRule

Gives information about the current policy.

Specified by:

getInformation in class CreateTableRule

Returns:

a String value

See Also:

CreateTableRule.getInformation()