com.healthmarketscience.jackcess.impl

Class IndexPageCache.DataPageMain

java.lang.Object

com.healthmarketscience.jackcess.impl.IndexPageCache.DataPageMain

Enclosing class:

IndexPageCache

private class IndexPageCache.DataPageMain
extends java.lang.Object

Keeps track of the main info for an index page.

Field Summary

Fields

Modifier and Type	Field and Description
java.lang.Integer	_childTailPageNumber
private java.lang.ref.Reference<IndexPageCache.DataPageExtra>	_extra
boolean	_leaf
java.lang.Integer	_nextPageNumber
int	_pageNumber
java.lang.Integer	_parentPageNumber
java.lang.Integer	_prevPageNumber
boolean	_tail

Constructor Summary

Constructors

Modifier	Constructor and Description
private	DataPageMain(int pageNumber)

Method Summary

Modifier and Type	Method and Description
IndexPageCache	getCache()
IndexPageCache.DataPageMain	getChildPage(IndexData.Entry e)
private IndexPageCache.DataPageMain	getChildPage(java.lang.Integer childPageNumber, boolean isTail) Returns a child page for the given page number, updating its parent info if necessary.
IndexPageCache.DataPageMain	getChildTailPage()
IndexPageCache.DataPageExtra	getExtra()
IndexPageCache.DataPageMain	getNextPage()
IndexPageCache.DataPageMain	getParentPage()
IndexPageCache.DataPageMain	getPrevPage()
boolean	hasChildTail()
void	initParentPage(java.lang.Integer parentPageNumber, boolean isTail)
boolean	isChildTailPageNumber(int pageNumber)
boolean	isRoot()
boolean	isTail()
private void	resolveParent()
void	setExtra(IndexPageCache.DataPageExtra extra)
void	setParentPage(java.lang.Integer parentPageNumber, boolean isTail)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

_pageNumber

public final int _pageNumber

_prevPageNumber

public java.lang.Integer _prevPageNumber

_nextPageNumber

public java.lang.Integer _nextPageNumber

_childTailPageNumber

public java.lang.Integer _childTailPageNumber

_parentPageNumber

public java.lang.Integer _parentPageNumber

_leaf

public boolean _leaf

_tail

public boolean _tail

_extra

private java.lang.ref.Reference<IndexPageCache.DataPageExtra> _extra

Constructor Detail

DataPageMain

private DataPageMain(int pageNumber)

Method Detail

getCache

public IndexPageCache getCache()

isRoot

public boolean isRoot()

isTail

public boolean isTail()
               throws java.io.IOException

Throws:

java.io.IOException

hasChildTail

public boolean hasChildTail()

isChildTailPageNumber

public boolean isChildTailPageNumber(int pageNumber)

getParentPage

public IndexPageCache.DataPageMain getParentPage()
                                          throws java.io.IOException

Throws:

java.io.IOException

initParentPage

public void initParentPage(java.lang.Integer parentPageNumber,
                           boolean isTail)

setParentPage

public void setParentPage(java.lang.Integer parentPageNumber,
                          boolean isTail)

getPrevPage

public IndexPageCache.DataPageMain getPrevPage()
                                        throws java.io.IOException

Throws:

java.io.IOException

getNextPage

public IndexPageCache.DataPageMain getNextPage()
                                        throws java.io.IOException

Throws:

java.io.IOException

getChildPage

public IndexPageCache.DataPageMain getChildPage(IndexData.Entry e)
                                         throws java.io.IOException

Throws:

java.io.IOException

getChildTailPage

public IndexPageCache.DataPageMain getChildTailPage()
                                             throws java.io.IOException

Throws:

java.io.IOException

getChildPage

private IndexPageCache.DataPageMain getChildPage(java.lang.Integer childPageNumber,
                                                 boolean isTail)
                                          throws java.io.IOException

Returns a child page for the given page number, updating its parent info if necessary.

Throws:

java.io.IOException

getExtra

public IndexPageCache.DataPageExtra getExtra()
                                      throws java.io.IOException

Throws:

java.io.IOException

setExtra

public void setExtra(IndexPageCache.DataPageExtra extra)
              throws java.io.IOException

Throws:

java.io.IOException

resolveParent

private void resolveParent()
                    throws java.io.IOException

Throws:

java.io.IOException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object