org.jboss.messaging.core.journal.impl
Class Reclaimer

java.lang.Object
  extended by org.jboss.messaging.core.journal.impl.Reclaimer

public class Reclaimer
extends java.lang.Object

A ReclaimerTest The journal consists of an ordered list of journal files Fn where 0 <= n <= N A journal file can contain either positives (pos) or negatives (neg) (Positives correspond either to adds or updates, and negatives correspond to deletes). A file Fn can be deleted if, and only if the following criteria are satisified 1) All pos in a file Fn, must have corresponding neg in any file Fm where m >= n. 2) All pos that correspond to any neg in file Fn, must all live in any file Fm where 0 <= m <= n which are also marked for deletion in the same pass of the algorithm.

Author:
Tim Fox

Constructor Summary
Reclaimer()
           
 
Method Summary
 void scan(JournalFile[] files)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Reclaimer

public Reclaimer()
Method Detail

scan

public void scan(JournalFile[] files)


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