com.healthmarketscience.jackcess.impl

Class UsageMap.InlineHandler

java.lang.Object

com.healthmarketscience.jackcess.impl.UsageMap.Handler

com.healthmarketscience.jackcess.impl.UsageMap.InlineHandler

Enclosing class:

UsageMap

private class UsageMap.InlineHandler
extends UsageMap.Handler

Usage map whose map is written inline in the same page. For Jet4, this type of map can usually contains a maximum of 512 pages. Free space maps are always inline, used space maps may be inline or reference. It has a start page, which all page numbers in its map are calculated as starting from.

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	_assumeOutOfRangeBitsOn
private int	_maxInlinePages

Constructor Summary

Constructors

Modifier	Constructor and Description
private	InlineHandler(boolean assumeOutOfRangeBitsOn)

Method Summary

Modifier and Type	Method and Description
void	addOrRemovePageNumber(int pageNumber, boolean add, boolean force)
boolean	containsPageNumber(int pageNumber)
private int	getInlineDataEnd()
private int	getInlineDataStart()
private int	getMaxInlinePages()
private void	moveToNewStartPage(int newStartPage, int newPageNumber) Shifts the inline usage map so that it now starts with the given page.
private void	moveToNewStartPageForRemove(int firstPage, int newPageNumber) Shifts the inline usage map so that it now starts with the given firstPage (if valid), otherwise the newPageNumber.
private void	setInlinePageRange(int startPage) Sets the page range for an inline usage map starting from the given page.

Methods inherited from class java.lang.Object

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

Field Detail

_assumeOutOfRangeBitsOn

private final boolean _assumeOutOfRangeBitsOn

_maxInlinePages

private final int _maxInlinePages

Constructor Detail

InlineHandler

private InlineHandler(boolean assumeOutOfRangeBitsOn)
               throws java.io.IOException

Throws:

java.io.IOException

Method Detail

getMaxInlinePages

private int getMaxInlinePages()

getInlineDataStart

private int getInlineDataStart()

getInlineDataEnd

private int getInlineDataEnd()

setInlinePageRange

private void setInlinePageRange(int startPage)

Sets the page range for an inline usage map starting from the given page.

containsPageNumber

public boolean containsPageNumber(int pageNumber)

Overrides:

containsPageNumber in class UsageMap.Handler

addOrRemovePageNumber

public void addOrRemovePageNumber(int pageNumber,
                                  boolean add,
                                  boolean force)
                           throws java.io.IOException

Specified by:

addOrRemovePageNumber in class UsageMap.Handler

Parameters:

pageNumber - Page number to add or remove from this map

add - True to add it, false to remove it

force - true to force add/remove and ignore certain inconsistencies

Throws:

java.io.IOException

moveToNewStartPage

private void moveToNewStartPage(int newStartPage,
                                int newPageNumber)
                         throws java.io.IOException

Shifts the inline usage map so that it now starts with the given page.

Parameters:

newStartPage - new page at which to start

newPageNumber - optional page number to add once the map has been shifted to the new start page

Throws:

java.io.IOException

moveToNewStartPageForRemove

private void moveToNewStartPageForRemove(int firstPage,
                                         int newPageNumber)
                                  throws java.io.IOException

Shifts the inline usage map so that it now starts with the given firstPage (if valid), otherwise the newPageNumber. Any page numbers added to the end of the usage map are set to "on".

Parameters:

firstPage - current first used page

newPageNumber - page number to remove once the map has been shifted to the new start page

Throws:

java.io.IOException