com.sleepycat.je.log

Class FileSource

java.lang.Object

com.sleepycat.je.log.FileSource

All Implemented Interfaces:

LogSource

Direct Known Subclasses:

FileHandleSource

 class FileSource
extends java.lang.Object
implements LogSource

FileSource is used as a channel to a log file when faulting in objects from the log.

Constructor Summary

Constructors

Constructor and Description
FileSource(java.io.RandomAccessFile file, int readBufferSize, FileManager fileManager, long fileNum, int logVersion)

Method Summary

Methods

Modifier and Type	Method and Description
java.nio.ByteBuffer	getBytes(long fileOffset) Fill the destination byte array with bytes.
java.nio.ByteBuffer	getBytes(long fileOffset, int numBytes) Fill the destination byte array with the requested number of bytes.
int	getLogVersion() Returns the log version of the log entries from this source.
void	release() We're done with this log source.

Methods inherited from class java.lang.Object

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

Constructor Detail

FileSource

FileSource(java.io.RandomAccessFile file,
          int readBufferSize,
          FileManager fileManager,
          long fileNum,
          int logVersion)

Method Detail

release

public void release()
             throws DatabaseException

Description copied from interface: LogSource

We're done with this log source.

Specified by:

release in interface LogSource

Throws:

DatabaseException - in subclasses.

See Also:

LogSource.release()

getBytes

public java.nio.ByteBuffer getBytes(long fileOffset)
                             throws DatabaseException

Description copied from interface: LogSource

Fill the destination byte array with bytes. The offset indicates the absolute log file position.

Specified by:

getBytes in interface LogSource

Throws:

DatabaseException

See Also:

LogSource.getBytes(long)

getBytes

public java.nio.ByteBuffer getBytes(long fileOffset,
                           int numBytes)
                             throws ChecksumException,
                                    DatabaseException

Description copied from interface: LogSource

Fill the destination byte array with the requested number of bytes. The offset indicates the absolute position in the log file.

Specified by:

getBytes in interface LogSource

Throws:

ChecksumException

DatabaseException

See Also:

LogSource.getBytes(long)

getLogVersion

public int getLogVersion()

Description copied from interface: LogSource

Returns the log version of the log entries from this source.

Specified by:

getLogVersion in interface LogSource