com.healthmarketscience.jackcess.impl

Class LongValueColumnImpl.UmapLongValueBufferHolder

java.lang.Object

com.healthmarketscience.jackcess.impl.LongValueColumnImpl.LongValueBufferHolder

com.healthmarketscience.jackcess.impl.LongValueColumnImpl.UmapLongValueBufferHolder

Enclosing class:

LongValueColumnImpl

private final class LongValueColumnImpl.UmapLongValueBufferHolder
extends LongValueColumnImpl.LongValueBufferHolder

Manages the column usage maps for long values.

Field Summary

Fields

Modifier and Type	Field and Description
private UsageMap	_freeSpacePages Usage map of pages that this column owns with free space on them
private TempPageHolder	_longValueBufferH page buffer used to write "long value" data
private UsageMap	_ownedPages Usage map of pages that this column owns

Constructor Summary

Constructors

Modifier	Constructor and Description
private	UmapLongValueBufferHolder(UsageMap ownedPages, UsageMap freeSpacePages)

Method Summary

Modifier and Type	Method and Description
void	clear() Discards the current the current long value data page.
protected java.nio.ByteBuffer	findNewPage(int dataLength)
protected TempPageHolder	getBufferHolder()
int	getOwnedPageCount()

Methods inherited from class com.healthmarketscience.jackcess.impl.LongValueColumnImpl.LongValueBufferHolder

getLongValuePage, getPageNumber

Methods inherited from class java.lang.Object

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

Field Detail

_ownedPages

private final UsageMap _ownedPages

Usage map of pages that this column owns

_freeSpacePages

private final UsageMap _freeSpacePages

Usage map of pages that this column owns with free space on them

_longValueBufferH

private final TempPageHolder _longValueBufferH

page buffer used to write "long value" data

Constructor Detail

UmapLongValueBufferHolder

private UmapLongValueBufferHolder(UsageMap ownedPages,
                                  UsageMap freeSpacePages)

Method Detail

getBufferHolder

protected TempPageHolder getBufferHolder()

Specified by:

getBufferHolder in class LongValueColumnImpl.LongValueBufferHolder

getOwnedPageCount

public int getOwnedPageCount()

Overrides:

getOwnedPageCount in class LongValueColumnImpl.LongValueBufferHolder

findNewPage

protected java.nio.ByteBuffer findNewPage(int dataLength)
                                   throws java.io.IOException

Overrides:

findNewPage in class LongValueColumnImpl.LongValueBufferHolder

Throws:

java.io.IOException

clear

public void clear()
           throws java.io.IOException

Description copied from class: LongValueColumnImpl.LongValueBufferHolder

Discards the current the current long value data page.

Overrides:

clear in class LongValueColumnImpl.LongValueBufferHolder

Throws:

java.io.IOException