org.netbeans.mdr.persistence.btreeimpl.btreeindex

Class VarKeyPage

java.lang.Object

org.netbeans.mdr.persistence.btreeimpl.btreeindex.BtreePage

org.netbeans.mdr.persistence.btreeimpl.btreeindex.VarKeyPage

All Implemented Interfaces:

Streamable

public class VarKeyPage
extends BtreePage

Implementation of a BtreePage with variable length keys and fixed length data.

Field Summary

Fields inherited from class org.netbeans.mdr.persistence.btreeimpl.btreeindex.BtreePage

pageBuffer, pageId

Constructor Summary

Constructors

Constructor and Description
VarKeyPage()

Method Summary

Methods

Modifier and Type	Method and Description
void	dumpPageHeader(java.io.PrintWriter out) Print BtreePage header for debugging.
void	init(Btree btree, byte[] pageId, byte[] pageBuffer, boolean isNew) Initialize a newly-instantiated or recycled VarKeyPage.
void	store() Write VarKeyPage header data to the page buffer.

Methods inherited from class org.netbeans.mdr.persistence.btreeimpl.btreeindex.BtreePage

compare, compareData, consistencyCheck, dumpPage, dumpPageBuffer, dumpPageEntries, dumpTree, get, getLocation, makeRoot, put, put, read, remove, remove, remove, split, uninit, write

Methods inherited from class java.lang.Object

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

Constructor Detail

VarKeyPage

public VarKeyPage()

Method Detail

init

public void init(Btree btree,
        byte[] pageId,
        byte[] pageBuffer,
        boolean isNew)
          throws StorageException

Initialize a newly-instantiated or recycled VarKeyPage. Note that the isNew parameter pertains to whether a new page is being added to the btree, not to whether this BtreePage object is new or recycled.

Overrides:

init in class BtreePage

Parameters:

btree - btree to which this page belongs

pageId - page ID in byte array

pageBuffer - page buffer

isNew - is this page new to the btree

Throws:

StorageException

store

public void store()

Write VarKeyPage header data to the page buffer.

Overrides:

store in class BtreePage

dumpPageHeader

public void dumpPageHeader(java.io.PrintWriter out)

Description copied from class: BtreePage

Print BtreePage header for debugging.

Overrides:

dumpPageHeader in class BtreePage

Parameters:

out - PrintWriter to print to