org.objectweb.cjdbc.controller.requestmanager
Class DistributedRequestManager

java.lang.Object
  org.objectweb.cjdbc.controller.requestmanager.RequestManager
      org.objectweb.cjdbc.controller.requestmanager.DistributedRequestManager

public class DistributedRequestManager

extends RequestManager

This class defines a Distributed Request Manager.

The RM is composed of a Request Scheduler, an optional Query Cache, and a Load Balancer and an optional Recovery Log. Unlike a non-dsitributed Request Manager, this implementation is responsible for synchronizing the different controllers components (schedulers, ...).

Version:

1.0

Author:

Emmanuel Cecchet

Field Summary

Fields inherited from class org.objectweb.cjdbc.controller.requestmanager.RequestManager

loadBalancer, recoveryLog, requestCache, scheduler

Constructor Summary

DistributedRequestManager(DistributedVirtualDatabase vdb, AbstractScheduler scheduler, AbstractLoadBalancer loadBalancer, AbstractRecoveryLog recoveryLog, long beginTimeout, long commitTimeout, long rollbackTimeout)
Creates a new DistributedRequestManager instance without cache.

DistributedRequestManager(DistributedVirtualDatabase vdb, AbstractScheduler scheduler, AbstractLoadBalancer loadBalancer, long beginTimeout, long commitTimeout, long rollbackTimeout)
Creates a new DistributedRequestManager instance without cache.

DistributedRequestManager(DistributedVirtualDatabase vdb, AbstractScheduler scheduler, AbstractRequestCache cache, AbstractLoadBalancer loadBalancer, AbstractRecoveryLog recoveryLog, long beginTimeout, long commitTimeout, long rollbackTimeout)
Creates a new DistributedRequestManager instance without cache.

DistributedRequestManager(DistributedVirtualDatabase vdb, AbstractScheduler scheduler, AbstractRequestCache cache, AbstractLoadBalancer loadBalancer, long beginTimeout, long commitTimeout, long rollbackTimeout)
Creates a new DistributedRequestManager instance without cache.

Methods inherited from class org.objectweb.cjdbc.controller.requestmanager.RequestManager

begin, commit, disableBackend, disableBackendForCheckpoint, enableBackend, enableBackendFromCheckpoint, execReadRequest, execReadStoredProcedure, execWriteRequest, execWriteRequestWithKeys, execWriteStoredProcedure, getDatabaseSchema, getInformation, getLoadBalancer, getRecoveryLog, getRequestCache, getRequiredParsingGranularity, getScheduler, getXmlInformation, mergeDatabaseSchema, rollback, setBackgroundParsing, setCaseSensitiveParsing, setDatabaseSchema, setLoadBalancer, setRecoveryLog, setRequestCache, setScheduler

Methods inherited from class java.lang.Object

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

Constructor Detail

DistributedRequestManager

public DistributedRequestManager(DistributedVirtualDatabase vdb,
                                 AbstractScheduler scheduler,
                                 AbstractLoadBalancer loadBalancer,
                                 long beginTimeout,
                                 long commitTimeout,
                                 long rollbackTimeout)
                          throws java.sql.SQLException

Creates a new DistributedRequestManager instance without cache.

Parameters:

vdb - the virtual database this request manager belongs to

scheduler - the Request Scheduler to use

loadBalancer - the Request Load Balancer to use

beginTimeout - timeout in seconds for begin

commitTimeout - timeout in seconds for commit

rollbackTimeout - timeout in seconds for rollback

Throws:

java.sql.SQLException - if an error occurs

DistributedRequestManager

public DistributedRequestManager(DistributedVirtualDatabase vdb,
                                 AbstractScheduler scheduler,
                                 AbstractRequestCache cache,
                                 AbstractLoadBalancer loadBalancer,
                                 long beginTimeout,
                                 long commitTimeout,
                                 long rollbackTimeout)
                          throws java.sql.SQLException

Creates a new DistributedRequestManager instance without cache.

Parameters:

vdb - the virtual database this request manager belongs to

scheduler - the Request Scheduler to use

cache - a Query Cache implementation

loadBalancer - the Request Load Balancer to use

beginTimeout - timeout in seconds for begin

commitTimeout - timeout in seconds for commit

rollbackTimeout - timeout in seconds for rollback

Throws:

java.sql.SQLException - if an error occurs

DistributedRequestManager

public DistributedRequestManager(DistributedVirtualDatabase vdb,
                                 AbstractScheduler scheduler,
                                 AbstractLoadBalancer loadBalancer,
                                 AbstractRecoveryLog recoveryLog,
                                 long beginTimeout,
                                 long commitTimeout,
                                 long rollbackTimeout)
                          throws java.sql.SQLException

Creates a new DistributedRequestManager instance without cache.

Parameters:

vdb - the virtual database this request manager belongs to

scheduler - the Request Scheduler to use

loadBalancer - the Request Load Balancer to use

recoveryLog - the Log Recovery to use

beginTimeout - timeout in seconds for begin

commitTimeout - timeout in seconds for commit

rollbackTimeout - timeout in seconds for rollback

Throws:

java.sql.SQLException - if an error occurs

DistributedRequestManager

public DistributedRequestManager(DistributedVirtualDatabase vdb,
                                 AbstractScheduler scheduler,
                                 AbstractRequestCache cache,
                                 AbstractLoadBalancer loadBalancer,
                                 AbstractRecoveryLog recoveryLog,
                                 long beginTimeout,
                                 long commitTimeout,
                                 long rollbackTimeout)
                          throws java.sql.SQLException

Creates a new DistributedRequestManager instance without cache.

Parameters:

vdb - the virtual database this request manager belongs to

scheduler - the Request Scheduler to use

cache - a Query Cache implementation

loadBalancer - the Request Load Balancer to use

recoveryLog - the Log Recovery to use

beginTimeout - timeout in seconds for begin

commitTimeout - timeout in seconds for commit

rollbackTimeout - timeout in seconds for rollback

Throws:

java.sql.SQLException - if an error occurs