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https://issues.apache.org/jira/browse/CONFIGURATION-281?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12506696
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Michiel Kalkman commented on CONFIGURATION-281:
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Cool, thanks.

I guess #2 is less important, and therefore not necessary, however I just 
thought that adding maxDepth might reduce the max size of a jndi context tree, 
and therefore reduce the nr of keys that are returned. Just in case some app 
decides to be creative with jndi contexts.


> JNDIConfiguration::recursiveGetKeys goes out of stack
> -----------------------------------------------------
>
>                 Key: CONFIGURATION-281
>                 URL: https://issues.apache.org/jira/browse/CONFIGURATION-281
>             Project: Commons Configuration
>          Issue Type: Bug
>    Affects Versions: 1.2
>         Environment: Websphere 5.1
>            Reporter: Michiel Kalkman
>             Fix For: 1.5
>
>
> There can be cycles in contexts. Websphere 5.1 certainly does have them.
> When getKeys() is called on a JNDIConfiguration, eventually 
> recursiveGetKeys() is called, which calls itself for every subcontext. This 
> will never stop if there is a cycle.
> I would like to suggest the following changes to recursiveGetKeys() to fix 
> this:
> 1) check for each subcontext if it has been processed before. If so, don't 
> process it. An additional stack argument to recursiveGetKeys() should do the 
> trick here.
> 2) a maxDepth attribute, like <jndi maxDepth="4"/>. If the number of 
> subcontexts is equal to maxDepth, stop processing. The maxDepth attribute 
> should be optional of course, and have a default value like 911or so. The 
> stack argument could be used to check the amount of subcontexts processed.
> Because I want to be able to dump the configuration for debugging purposes, 
> this item is of somewhat importance to me.
> I tested this in 1.2 at work, so I cannot easily test this against 1.4. But 
> as the code of 1.4 seems to be more or less the same, I think the problem 
> still exists.

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