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https://issues.apache.org/jira/browse/RIVER-123?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Peter Firmstone resolved RIVER-123.
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Resolution: Won't Fix
Fix Version/s: River_3.0.0
Use Groovy configuration for arithmetic operations.
> ConfigurationFile should support arithmetic operations
> ------------------------------------------------------
>
> Key: RIVER-123
> URL: https://issues.apache.org/jira/browse/RIVER-123
> Project: River
> Issue Type: Improvement
> Components: net_jini_config
> Affects Versions: jtsk_2.1
> Reporter: Ron Mann
> Fix For: River_3.0.0
>
>
> Bugtraq ID
> [5091973|http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5091973]
> There have been some requests on the Porter discussion list for
> ConfigurationFile to support arithmetic operations. A use case for this
> feature is to facilitate configuring services with a set of consecutive ports
> open in a firewall.
> Below is the use case provided by Van Simmons from Invesco:
> "...my particular case was in wanting to use a range of port numbers for my
> various services so that I could open some holes in a firewall and allow
> access to the services. In that case, I would like to pass in
> ${basePortNumber} as variable, have reggie use ${basePortNumber}, outrigger
> use ${basePortNumber}+1, et al. That way, if I decided to move things around
> I could do that without revisiting all my config files."
> While ${basePortNumber} could not be used directly in an addition expression
> because it is of type String, it would be possible to do something like
> Integer.parseInt(${basePortNumber}) + 1.
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