com.persistit

Class TreeState

java.lang.Object

com.persistit.TreeState

public class TreeState
extends Object

An immutable, inactive representation of the state of a Tree object. Instances of this class are displayable and are what is generated by the Value class when fetching members of a directory tree.

Constructor Summary

Constructors

Constructor and Description
TreeState()

Method Summary

Modifier and Type	Method and Description
long	getChangeCount()
int	getDepth()
String	getName()
long	getRootPageAddr() Returns the page address of the root page of this Tree.
TreeStatistics	getTreeStatistics()
String	toString() Returns a displayable description of the Tree, including its name, its internal tree index, its root page address, and its depth.

Methods inherited from class java.lang.Object

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

Constructor Detail

TreeState

public TreeState()

Method Detail

getName

public String getName()

getRootPageAddr

public long getRootPageAddr()

Returns the page address of the root page of this Tree. The root page will be a data page if the Tree has only one page, or will be the top index page of the B-Tree.

Returns:

The root page address

getChangeCount

public long getChangeCount()

Returns:

The number of key-value insert/delete operations performed on this tree; does not including replacement of an existing value

getDepth

public int getDepth()

Returns:

the number of levels of the Tree.

getTreeStatistics

public TreeStatistics getTreeStatistics()

toString

public String toString()

Returns a displayable description of the Tree, including its name, its internal tree index, its root page address, and its depth.

Overrides:

toString in class Object

Returns:

A displayable summary