Package org.h2.mvstore

Class MVStore.RemovedPageInfo

java.lang.Object

org.h2.mvstore.MVStore.RemovedPageInfo

All Implemented Interfaces:

java.lang.Comparable<MVStore.RemovedPageInfo>

Enclosing class:

MVStore

private static class MVStore.RemovedPageInfo
extends java.lang.Object
implements java.lang.Comparable<MVStore.RemovedPageInfo>

Field Summary

Fields

Modifier and Type	Field	Description
(package private) long	removedPageInfo
(package private) long	version

Constructor Summary

Constructors

Constructor	Description
RemovedPageInfo(long pagePos, boolean pinned, long version, int pageNo)

Method Summary

Modifier and Type	Method	Description
int	compareTo(MVStore.RemovedPageInfo other)
private static long	createRemovedPageInfo(long pagePos, boolean isPinned, int pageNo)	Transforms saved page position into removed page info by replacing "page offset" with "page sequential number" and "page type" bit with "pinned page" flag.
(package private) int	getPageChunkId()
(package private) int	getPageLength()
(package private) int	getPageNo()
(package private) boolean	isPinned()	Find out if removed page was pinned (can not be evacuated to a new chunk).
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

version

final long version

removedPageInfo

final long removedPageInfo

Constructor Detail

RemovedPageInfo

RemovedPageInfo(long pagePos,
                boolean pinned,
                long version,
                int pageNo)

Method Detail

compareTo

public int compareTo(MVStore.RemovedPageInfo other)

Specified by:

compareTo in interface java.lang.Comparable<MVStore.RemovedPageInfo>

getPageChunkId

int getPageChunkId()

getPageNo

int getPageNo()

getPageLength

int getPageLength()

isPinned

boolean isPinned()

Find out if removed page was pinned (can not be evacuated to a new chunk).

Returns:

true if page has been pinned

createRemovedPageInfo

private static long createRemovedPageInfo(long pagePos,
                                          boolean isPinned,
                                          int pageNo)

Transforms saved page position into removed page info by replacing "page offset" with "page sequential number" and "page type" bit with "pinned page" flag.

Parameters:

pagePos - of the saved page

isPinned - whether page belong to a "single writer" map

pageNo - 0-based sequential page number within containing chunk

Returns:

removed page info that contains chunk id, page number, page length and pinned flag

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object