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https://issues.apache.org/jira/browse/CONFIGURATION-401?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12776513#action_12776513
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Ralph Goers commented on CONFIGURATION-401:
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If your customer mandates property files then I don't understand how
persons.person.name=1
persons.person.surName=2
persons.person.phoneNum=3
persons.person.name=4
persons.person.surName=5
persons.person.phoneNum=6
persons.person.name=7
persons.person.surName=8
persons.person.phoneNum=9
would be acceptable. java.util.Properties files do not allow duplicate keys.
Instead, you would have to do
persons.person.name=1,4,7
persons.person,surName=2,5,8
persons.persona.phoneNum=3,6,9
which, of course, is practically useless.
Also, I don't think I've actually seen a description of why you need to convert
the properties into a hierarchical format. What is the use case you are trying
to solve?
Yes, we could invent some new syntax that might work, but I don't think any of
the committers are interested in doing that. I don't believe any of us are
directly paid to work on Commons Configuration and we all have other things we
would like to work on.
That said, although I understand you said you don't have the resources to do
it, if you, or someone else, were to provide a patch we would definitely
consider it.
> HierarchicalConfiguration does not support hierarchy from property files
> -------------------------------------------------------------------------
>
> Key: CONFIGURATION-401
> URL: https://issues.apache.org/jira/browse/CONFIGURATION-401
> Project: Commons Configuration
> Issue Type: Bug
> Components: Expression engine
> Affects Versions: 1.6
> Environment: windows/Linux
> Reporter: yair ogen
>
> If you have hierarchy like this:
> persons.person.name=1
> persons.person.surName=2
> persons.person.phoneNum=3
> persons.person.name=4
> persons.person.surName=5
> persons.person.phoneNum=6
> persons.person.name=7
> persons.person.surName=8
> persons.person.phoneNum=9
> If I have a regular property configuration that loaded a file containing in
> the above. then I transform into HierarchicalConfiguration using:
> ConfigurationUtils.convertToHierarchical(configuration).
> The tree is not right.
> I can do this:
> hierarchicalConfiguration.subset("persons").subset("person(0)").getKeys()
> but this returned empty iterator:
> hierarchicalConfiguration.subset("persons").subset("person(1)").getKeys()
> Only the first person is available.
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