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From "Oliver Heger (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (CONFIGURATION-302) FileChangedReloadingStrategy.reloadingRequired() can fail
Date Tue, 25 Dec 2007 19:07:43 GMT

     [ https://issues.apache.org/jira/browse/CONFIGURATION-302?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Oliver Heger resolved CONFIGURATION-302.
----------------------------------------

    Resolution: Fixed

A fix has been applied. Thanks.

> FileChangedReloadingStrategy.reloadingRequired() can fail
> ---------------------------------------------------------
>
>                 Key: CONFIGURATION-302
>                 URL: https://issues.apache.org/jira/browse/CONFIGURATION-302
>             Project: Commons Configuration
>          Issue Type: Bug
>    Affects Versions: 1.5
>            Reporter: Pino Navato
>            Assignee: Oliver Heger
>            Priority: Minor
>             Fix For: 1.6
>
>
> If reloadingRequired() returns true and you call it again before calling reloadingPerformed(),
the 2nd time it can return false (but you have not yet reloaded!) because it doesn't check
the file system again until the refresh delay is expired.
> Of course this is a very unusual test case (usually you reload immediately) but the behaviour
of the method should be consistent in this case too: if reloadingRequired() returns true any
subsequent call to this method should return true until reloadingPerformed() is called.
> In my project I have fixed the method by promoting the flag called "reloading" to class
scope so I that can check whether the previous call returned true or false:
> protected boolean reloading = false;
> public boolean reloadingRequired()
> {
> 	if (!reloading)
> 	{
> 		long now = System.currentTimeMillis();
> 		if (now > lastChecked + refreshDelay)
> 		{
> 			lastChecked = now;
> 			if (hasChanged())
> 			{
> 				reloading = true;
> 			}
> 		}
> 	}
> 	return reloading;
> }
> Of course I reset this flag in init() and reloadingPerformed().

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