Module org.apache.jena.tdb

Package org.apache.jena.tdb1.index.bplustree

Class BPTreeNodeMgr

java.lang.Object

org.apache.jena.tdb1.base.page.PageBlockMgr<T>

org.apache.jena.tdb1.index.bplustree.BPTreeNodeMgr

public final class BPTreeNodeMgr
extends PageBlockMgr<T>

BPlusTreePageMgr = BPlusTreeNode manager

Constructor Summary

Constructors

Constructor	Description
BPTreeNodeMgr(BPlusTree bpTree, BlockMgr blockMgr)

Method Summary

Modifier and Type	Method	Description
int	createEmptyBPT()	Allocate root node space.
BPTreeNode	createNode(int parent)	Allocate space for a fresh node.
BPTreeNode	getRead(int id)
BPTreeNode	getRead(int id, int parent)	Fetch a block - fill in the parent id, which is not in the on-disk bytes
BPTreeNode	getRoot(int id)	Fetch a block for the root.
BPTreeNode	getWrite(int id)
BPTreeNode	getWrite(int id, int parent)	Fetch a block - fill in the parent id, which is not in the on-disk bytes

Methods inherited from class org.apache.jena.tdb1.base.page.PageBlockMgr

create, dump, finishRead, finishUpdate, free, getBlockMgr, promote, put, release, startRead, startUpdate, valid, write

Methods inherited from class java.lang.Object

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

Constructor Details

BPTreeNodeMgr

public BPTreeNodeMgr(BPlusTree bpTree,
 BlockMgr blockMgr)

Method Details

createEmptyBPT

public int createEmptyBPT()

Allocate root node space. The root is a node with a Records block.

createNode

public BPTreeNode createNode(int parent)

Allocate space for a fresh node.

getRoot

public BPTreeNode getRoot(int id)

Fetch a block for the root.

getWrite

public BPTreeNode getWrite(int id)

Overrides:

getWrite in class PageBlockMgr<BPTreeNode>

getRead

public BPTreeNode getRead(int id)

Overrides:

getRead in class PageBlockMgr<BPTreeNode>

getRead

public BPTreeNode getRead(int id,
 int parent)

Fetch a block - fill in the parent id, which is not in the on-disk bytes

getWrite

public BPTreeNode getWrite(int id,
 int parent)

Fetch a block - fill in the parent id, which is not in the on-disk bytes