org.objectweb.cjdbc.controller.scheduler.singledb
Class SingleDBQueryLevelScheduler

java.lang.Object
  org.objectweb.cjdbc.controller.scheduler.AbstractScheduler
      org.objectweb.cjdbc.controller.scheduler.singledb.SingleDBQueryLevelScheduler

All Implemented Interfaces:

XmlComponent

public class SingleDBQueryLevelScheduler

extends AbstractScheduler

This scheduler provides scheduling for a single backend instance. It is really trivial and does not yet support distribution.

Version:

1.0

Author:

Emmanuel Cecchet

Field Summary

private long

requestId

Fields inherited from class org.objectweb.cjdbc.controller.scheduler.AbstractScheduler

logger, parsingGranularity, raidbLevel

Fields inherited from interface org.objectweb.cjdbc.common.xml.XmlComponent

DOCTYPE_DB, XML_VERSION

Constructor Summary

SingleDBQueryLevelScheduler()
Creates a new Single Database Scheduler

Method Summary

protected void	commitTransaction(long transactionId) Commit a transaction given its id.
java.lang.String	getXmlImpl()
void	notifyWriteCompleted(AbstractWriteRequest request) Notify the completion of a write statement.
void	readCompletedNotify(SelectRequest request) Notify the completion of a read statement.
protected void	rollbackTransaction(long transactionId) Rollback a transaction given its id.
void	scheduleNonSuspendedWriteRequest(AbstractWriteRequest request) Schedule a write request (implementation specific).
void	scheduleReadRequest(SelectRequest request) Schedule a read request (implementation specific).

Methods inherited from class org.objectweb.cjdbc.controller.scheduler.AbstractScheduler

begin, beginCompleted, commit, commitCompleted, getNumberRead, getNumberWrite, getParsingGranularity, getPendingTransactions, getPendingWrites, getRAIDbLevel, getSchedulerData, getXml, hasSQLMacros, initializeTransactionId, isSuspendedTransactions, isSuspendedWrites, mergeDatabaseSchema, readCompleted, resumeNewTransactions, resumeWrites, rollback, rollbackCompleted, scheduleWriteRequest, setDatabaseSchema, setParsingGranularity, setRAIDbLevel, suspendNewTransactionsForCheckpoint, suspendWrites, writeCompleted

Methods inherited from class java.lang.Object

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

Field Detail

requestId

private long requestId

Constructor Detail

SingleDBQueryLevelScheduler

public SingleDBQueryLevelScheduler()

Creates a new Single Database Scheduler

Method Detail

scheduleReadRequest

public final void scheduleReadRequest(SelectRequest request)

Description copied from class: AbstractScheduler

Schedule a read request (implementation specific). This method blocks until the read can be executed.

Specified by:

scheduleReadRequest in class AbstractScheduler

Parameters:

request - Select request to schedule (SQL macros are already handled if needed)

See Also:

AbstractScheduler.scheduleReadRequest(SelectRequest)

readCompletedNotify

public final void readCompletedNotify(SelectRequest request)

Description copied from class: AbstractScheduler

Notify the completion of a read statement.

Specified by:

readCompletedNotify in class AbstractScheduler

Parameters:

request - the completed request

See Also:

AbstractScheduler.readCompletedNotify(SelectRequest)

scheduleNonSuspendedWriteRequest

public final void scheduleNonSuspendedWriteRequest(AbstractWriteRequest request)

Description copied from class: AbstractScheduler

Schedule a write request (implementation specific). This method blocks until the request can be executed.

Specified by:

scheduleNonSuspendedWriteRequest in class AbstractScheduler

Parameters:

request - Write request to schedule (SQL macros are already handled if needed)

See Also:

AbstractScheduler.scheduleWriteRequest(AbstractWriteRequest)

notifyWriteCompleted

public final void notifyWriteCompleted(AbstractWriteRequest request)

Description copied from class: AbstractScheduler

Notify the completion of a write statement. This method does not need to be synchronized, it is enforced by the caller.

Specified by:

notifyWriteCompleted in class AbstractScheduler

Parameters:

request - the completed request

See Also:

AbstractScheduler.notifyWriteCompleted(AbstractWriteRequest)

commitTransaction

protected final void commitTransaction(long transactionId)

Description copied from class: AbstractScheduler

Commit a transaction given its id.

Specified by:

commitTransaction in class AbstractScheduler

Parameters:

transactionId - the transaction id

See Also:

AbstractScheduler.commitTransaction(long)

rollbackTransaction

protected final void rollbackTransaction(long transactionId)

Description copied from class: AbstractScheduler

Rollback a transaction given its id.

Specified by:

rollbackTransaction in class AbstractScheduler

Parameters:

transactionId - the transaction id

See Also:

AbstractScheduler.rollbackTransaction(long)

getXmlImpl

public java.lang.String getXmlImpl()

Specified by:

getXmlImpl in class AbstractScheduler

See Also:

AbstractScheduler.getXmlImpl()