Package com._1c.g5.v8.bm.store

Interface IBmWal

public interface IBmWal

Write-ahead log.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	IBmWal.IEntryProcessor	Entry processor.

Method Summary

Modifier and Type	Method	Description
void	close(boolean onError)	Closes the log.
void	log(byte[] data, int offset, int length)	Adds log entry.
void	processEntries(IBmWal.IEntryProcessor processor)	Invokes entry processor for each log entry if any.
void	reset()	Resets the log (all the entries are removed).
long	size()	Gets the size of the log.

Method Details

close

void close(boolean onError)
    throws IOException

Closes the log. Deletes the log if the closing was not requested due to an error.

Parameters:

onError - The flag indicating whether the closing was requested due to an error.

Throws:

IOException - if any I/O error occurs.

log

void log(byte[] data,
 int offset,
 int length)
  throws IOException

Adds log entry.

Parameters:

data - A byte array containing the log entry data. May not be null.

offset - The offset of the log entry data within the array.

length - The length of the entry data.

Throws:

IOException - if any I/O error occurs.

reset

void reset()
    throws IOException

Resets the log (all the entries are removed).

Throws:

IOException - if any I/O error occurs.

size

long size()
   throws IOException

Gets the size of the log.

Returns:

the size of the log in bytes.

Throws:

IOException - if any I/O error occurs.

processEntries

void processEntries(IBmWal.IEntryProcessor processor)
             throws IOException

Invokes entry processor for each log entry if any.

Parameters:

entryProcessor - The entry processor. May not be null.

Throws:

IOException - if any I/O error occurs.