Package bitronix.tm.journal

Class NullJournal

java.lang.Object

bitronix.tm.journal.NullJournal

All Implemented Interfaces:

Journal, Service

public class NullJournal
extends Object
implements Journal

No-op journal. Do not use for anything else than testing as the transaction manager cannot guarantee data integrity with this journal implementation.

Author:

lorban

Constructor Summary

Constructors

Constructor	Description
NullJournal()

Method Summary

Modifier and Type	Method	Description
void	close()	Close this journal and release all underlying resources.
Map<Uid,TransactionLogRecord>	collectDanglingRecords()	Collect all dangling records of the journal, ie: COMMITTING records with no corresponding COMMITTED record.
void	force()	Force journal to synchronize with permanent storage.
void	log(int status, Uid gtrid, Set<String> uniqueNames)	Log a new transaction status to journal.
void	open()	Open the journal.
void	shutdown()	Shutdown the service and free all held resources.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

NullJournal

public NullJournal()

Method Details

log

public void log(int status,
 Uid gtrid,
 Set<String> uniqueNames)
         throws IOException

Description copied from interface: Journal

Log a new transaction status to journal. Note that the journal will not check the flow of the transactions. If you call this method with erroneous data, it will be added to the journal as-is.

Specified by:

log in interface Journal

Parameters:

status - transaction status to log.

gtrid - GTRID of the transaction.

uniqueNames - unique names of the RecoverableXAResourceProducers participating in the transaction.

Throws:

IOException - if an I/O error occurs.

open

public void open()
          throws IOException

Description copied from interface: Journal

Open the journal. Integrity should be checked and an exception should be thrown in case the journal is corrupt.

Specified by:

open in interface Journal

Throws:

IOException - if an I/O error occurs.

close

public void close()
           throws IOException

Description copied from interface: Journal

Close this journal and release all underlying resources.

Specified by:

close in interface Journal

Throws:

IOException - if an I/O error occurs.

force

public void force()
           throws IOException

Description copied from interface: Journal

Force journal to synchronize with permanent storage.

Specified by:

force in interface Journal

Throws:

IOException - if an I/O error occurs.

collectDanglingRecords

public Map<Uid,TransactionLogRecord> collectDanglingRecords()
                                                     throws IOException

Description copied from interface: Journal

Collect all dangling records of the journal, ie: COMMITTING records with no corresponding COMMITTED record.

Specified by:

collectDanglingRecords in interface Journal

Returns:

a Map using Uid objects GTRID as key and TransactionLogRecord as value

Throws:

IOException - if an I/O error occurs.

shutdown

public void shutdown()

Description copied from interface: Service

Shutdown the service and free all held resources.

Specified by:

shutdown in interface Service

toString

public String toString()

Overrides:

toString in class Object