org.apache.jena.dboe.trans.bplustree

Class BPTreeNodeMgr

java.lang.Object

org.apache.jena.dboe.base.page.PageBlockMgr<BPTreeNode>

org.apache.jena.dboe.trans.bplustree.BPTreeNodeMgr

All Implemented Interfaces:

org.apache.jena.atlas.lib.Closeable

public final class BPTreeNodeMgr
extends org.apache.jena.dboe.base.page.PageBlockMgr<BPTreeNode>

BPlusTreePageMgr = BPlusTreeNode manager

Constructor Summary

Constructors

Constructor and Description
BPTreeNodeMgr(BPlusTree bpTree, org.apache.jena.dboe.base.block.BlockMgr blockMgr)

Method Summary

Modifier and Type	Method and Description
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	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.dboe.base.page.PageBlockMgr

allocLimit, close, create, dump, finishRead, finishUpdate, free, getBlockMgr, promoteDuplicate, promoteInPlace, put, release, resetAlloc, startRead, startUpdate, valid, write

Methods inherited from class java.lang.Object

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

Constructor Detail

BPTreeNodeMgr

public BPTreeNodeMgr(BPlusTree bpTree,
                     org.apache.jena.dboe.base.block.BlockMgr blockMgr)

Method Detail

createNode

public BPTreeNode createNode(int parent)

Allocate space for a fresh node.

getWrite

public BPTreeNode getWrite(int id)

Overrides:

getWrite in class org.apache.jena.dboe.base.page.PageBlockMgr<BPTreeNode>

getRead

public BPTreeNode getRead(int id)

Overrides:

getRead in class org.apache.jena.dboe.base.page.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

Overrides:

getRead in class org.apache.jena.dboe.base.page.PageBlockMgr<BPTreeNode>

getWrite

public BPTreeNode getWrite(int id,
                           int parent)

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

Overrides:

getWrite in class org.apache.jena.dboe.base.page.PageBlockMgr<BPTreeNode>