org.h2.mvstore

Class RootReference<K,V>

java.lang.Object

org.h2.mvstore.RootReference<K,V>

public final class RootReference<K,V>
extends java.lang.Object

Class RootReference is an immutable structure to represent state of the MVMap as a whole (not related to a particular B-Tree node). Single structure would allow for non-blocking atomic state change. The most important part of it is a reference to the root node.

Field Summary

Fields

Modifier and Type	Field and Description
Page<K,V>	root The root page.
long	version The version used for writing.

Method Summary

Modifier and Type	Method and Description
long	getTotalCount()
boolean	isLockedByCurrentThread()
boolean	needFlush() Whether flushing is needed.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

root

public final Page<K,V> root

The root page.

version

public final long version

The version used for writing.

Method Detail

isLockedByCurrentThread

public boolean isLockedByCurrentThread()

needFlush

public boolean needFlush()

Whether flushing is needed.

Returns:

true if yes

getTotalCount

public long getTotalCount()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object