jdbm.recman

Class FreeLogicalRowIdPageManager

java.lang.Object

jdbm.recman.FreeLogicalRowIdPageManager

final class FreeLogicalRowIdPageManager
extends java.lang.Object

This class manages free Logical rowid pages and provides methods to free and allocate Logical rowids on a high level.

Field Summary

Fields

Modifier and Type	Field and Description
private PageManager	pageManager our page manager
private RecordFile	recordFile our record recordFile

Constructor Summary

Constructors

Constructor and Description
FreeLogicalRowIdPageManager(PageManager pageManager) Creates a new instance using the indicated record file and page manager.

Method Summary

Modifier and Type	Method and Description
(package private) Location	get() Returns a free Logical rowid, or null if nothing was found.
(package private) void	put(Location rowId) Puts the indicated rowid on the free list

Methods inherited from class java.lang.Object

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

Field Detail

recordFile

private RecordFile recordFile

our record recordFile

pageManager

private PageManager pageManager

our page manager

Constructor Detail

FreeLogicalRowIdPageManager

FreeLogicalRowIdPageManager(PageManager pageManager)
                     throws java.io.IOException

Creates a new instance using the indicated record file and page manager.

Throws:

java.io.IOException

Method Detail

get

Location get()
      throws java.io.IOException

Returns a free Logical rowid, or null if nothing was found.

Throws:

java.io.IOException

put

void put(Location rowId)
  throws java.io.IOException

Puts the indicated rowid on the free list

Parameters:

rowId - The Location where we will store the rowId

Throws:

java.io.IOException