org.hsqldb.persist

Class TableSpaceManagerBlocks

java.lang.Object

org.hsqldb.persist.TableSpaceManagerBlocks

All Implemented Interfaces:

TableSpaceManager

public class TableSpaceManagerBlocks
extends java.lang.Object
implements TableSpaceManager

Manages allocation of space for rows.

Maintains a list of free file blocks with fixed capacity.

Since:

2.3.0

Constructor Summary

Constructors

Constructor and Description
TableSpaceManagerBlocks(DataSpaceManager spaceManager, int tableId, int fileBlockSize, int capacity, int fileScale)

Method Summary

Modifier and Type	Method and Description
void	addFileBlock(long blockFreePos, long blockLimit)
long	getFilePosition(long rowSize, boolean asBlocks) Returns the position of a free block or 0.
long	getLostBlocksSize()
int	getSpaceID()
boolean	hasFileRoom(long blockSize)
void	initialiseFileBlock(DoubleIntIndex spaceList, long blockFreePos, long blockLimit)
boolean	isDefaultSpace()
void	release(long pos, int rowSize) Deallocates a deleted block
void	reset()

Methods inherited from class java.lang.Object

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

Constructor Detail

TableSpaceManagerBlocks

public TableSpaceManagerBlocks(DataSpaceManager spaceManager,
                               int tableId,
                               int fileBlockSize,
                               int capacity,
                               int fileScale)

Method Detail

hasFileRoom

public boolean hasFileRoom(long blockSize)

Specified by:

hasFileRoom in interface TableSpaceManager

addFileBlock

public void addFileBlock(long blockFreePos,
                         long blockLimit)

Specified by:

addFileBlock in interface TableSpaceManager

initialiseFileBlock

public void initialiseFileBlock(DoubleIntIndex spaceList,
                                long blockFreePos,
                                long blockLimit)

Specified by:

initialiseFileBlock in interface TableSpaceManager

getSpaceID

public int getSpaceID()

Specified by:

getSpaceID in interface TableSpaceManager

release

public void release(long pos,
                    int rowSize)

Description copied from interface: TableSpaceManager

Deallocates a deleted block

Specified by:

release in interface TableSpaceManager

getFilePosition

public long getFilePosition(long rowSize,
                            boolean asBlocks)

Returns the position of a free block or 0.

Specified by:

getFilePosition in interface TableSpaceManager

reset

public void reset()

Specified by:

reset in interface TableSpaceManager

getLostBlocksSize

public long getLostBlocksSize()

Specified by:

getLostBlocksSize in interface TableSpaceManager

isDefaultSpace

public boolean isDefaultSpace()

Specified by:

isDefaultSpace in interface TableSpaceManager