com.bigdata.ha.althalog

Class HALogFile.HALogWriter

java.lang.Object

com.bigdata.ha.althalog.HALogFile.HALogWriter

All Implemented Interfaces:

IHALogWriter

Enclosing class:

HALogFile

public class HALogFile.HALogWriter
extends Object
implements IHALogWriter

Constructor Summary

Constructors

Constructor and Description
HALogFile.HALogWriter()

Method Summary

Methods

Modifier and Type	Method and Description
void	close(IRootBlockView rbv) Writes the closing rootblock to the log file and closes the file to further writes.
long	getCommitCounter() The commit counter for the committed state BEFORE the write set contained in the file is applied.
long	getSequence() Return the sequence number that is expected for the next write.
String	toString()
void	write(IHAWriteMessage msg, ByteBuffer data) Writes the message to the file and the associated data if the backing store is not a WORM.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.bigdata.ha.althalog.IHALogWriter

close

Constructor Detail

HALogFile.HALogWriter

public HALogFile.HALogWriter()

Method Detail

getSequence

public long getSequence()

Return the sequence number that is expected for the next write.

Specified by:

getSequence in interface IHALogWriter

Returns:

the next expected write sequence.

toString

public String toString()

Specified by:

toString in interface IHALogWriter

Overrides:

toString in class Object

Returns:

a String showing the current state of the writer

write

public void write(IHAWriteMessage msg,
         ByteBuffer data)
           throws IOException

Description copied from interface: IHALogWriter

Writes the message to the file and the associated data if the backing store is not a WORM.

Specified by:

write in interface IHALogWriter

Throws:

IOException

close

public void close(IRootBlockView rbv)
           throws IOException

Description copied from interface: IHALogWriter

Writes the closing rootblock to the log file and closes the file to further writes.

Specified by:

close in interface IHALogWriter

Parameters:

rbv - is the rootblock associated with the commit point

Throws:

IOException

getCommitCounter

public long getCommitCounter()

Description copied from interface: IHALogWriter

The commit counter for the committed state BEFORE the write set contained in the file is applied.

Specified by:

getCommitCounter in interface IHALogWriter