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https://issues.apache.org/jira/browse/CONFIGURATION-380?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ralph Goers resolved CONFIGURATION-380.
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Resolution: Fixed
I added a new ExprLookup class that uses Commons Jexl to evaluate expressions.
Documentation on how to use it was added to the user's guide.
> Allow expressions during lookup processing.
> -------------------------------------------
>
> Key: CONFIGURATION-380
> URL: https://issues.apache.org/jira/browse/CONFIGURATION-380
> Project: Commons Configuration
> Issue Type: New Feature
> Components: Expression engine
> Affects Versions: 1.6
> Reporter: Ralph Goers
> Assignee: Ralph Goers
> Fix For: 1.7
>
>
> We have a need to use String manipulation functions such as are provided by
> commons lang StringUtils on values in DefaultConfigurationBuilder's
> configuration file. For example, we use the MDCStrLookup provided by SLF4J
> and need to call
> right(${mdc:myKey}, 2) in a file pattern.
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