commons-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Tim Bessie <tbes...@meez.com>
Subject Re: [configuration] Any way to tell with CompositeConfiguration which child Config object a value is derived?
Date Thu, 17 Nov 2011 17:32:11 GMT
I'd be happy to write it myself - how does one become a committer in this
project?

- Tim

On Thu, Nov 17, 2011 at 8:55 AM, Oliver Heger
<oliver.heger@oliver-heger.de>wrote:

> Am 17.11.2011 00:34, schrieb Tim Bessie:
>
>  Thanks Oliver - unfortunately, that is not quite the same issue I'm
>> talking
>> about.
>> Mostly, this is because I want to use CompositeConfiguration; I don't
>> require structure in my configurations and don't want to have to deal with
>> the concepts CombinedConfiguration uses (nodes, views, etc.).
>>
>> Just a simple, layered configuration concept like CompositeConfiguration
>> provides, and the ability to say "where did the value for this key come
>> from", not "what is the ONLY configuration object this key is defined in".
>>
>> Perhaps we need another method - getFirstSource(String key), where the
>> source config returned is the one where key is first defined in the child
>> configurations, regardless of whether that key is defined again in a later
>> child config?
>>
>> Where would I request such a feature? Would that be hard to implement?
>> Seems to be a common sort of requirement.
>>
>> - Tim
>>
>
> Just open an enhancement ticket in Jira, our bug-tracking system [1] with
> a detailed description of what you want to achieve.
>
> From your explanation above I have the impression that this feature is not
> too complicated to implemented. But we will see when the ticket has been
> created.
>
> Oliver
>
> [1] http://commons.apache.org/**configuration/issue-tracking.**html<http://commons.apache.org/configuration/issue-tracking.html>
>
>
>> On Wed, Nov 16, 2011 at 1:34 PM, Oliver Heger
>> <oliver.heger@oliver-heger.de>**wrote:
>>
>>  Am 16.11.2011 22:24, schrieb Tim Bessie:
>>>
>>>  I have been trying to use commons-configuration, especially the
>>>
>>>> CompositeConfiguration object (and have looked into
>>>> CombinedConfiguration),
>>>> and I have a need to be able to ask  "Which child configuration object
>>>> did
>>>> a given key's value derive from?"
>>>>
>>>> I had thought that CompositeConfiguration.****getSource() would tell
>>>> me,
>>>>
>>>> but if
>>>> we have:
>>>>
>>>> source A:
>>>> x.prop1=hello
>>>>
>>>> source B:
>>>> x.prop1=goodbye
>>>>
>>>> source DEFAULT:
>>>> x.prop1=You didn't set a value
>>>>
>>>> and I call getSource("x.prop1"), I'll get an IllegalArgumentException,
>>>> since x.prop1 exists in all 3 child configurations.
>>>>
>>>> What I was hoping for was something that would be consistent with
>>>> getProperty("x.prop1"); since that would return the value from "source
>>>> A"
>>>> (since that was where it was first found), I was hoping there'd be some
>>>> method that could tell me "in which child configuration was the value
>>>> you
>>>> got found", but there doesn't seem to be any way to do this.
>>>>
>>>> Why is this vital functionality missing?  Or am I missing something in
>>>> the
>>>> documentation?
>>>>
>>>>
>>>>  There is an open bug report [1] related to this issue. Maybe the
>>> discussion in this ticket answers some of your questions.
>>>
>>> Oliver
>>>
>>> [1] https://issues.apache.org/****jira/browse/CONFIGURATION-443<https://issues.apache.org/**jira/browse/CONFIGURATION-443>
>>> <**https://issues.apache.org/**jira/browse/CONFIGURATION-443<https://issues.apache.org/jira/browse/CONFIGURATION-443>
>>> >
>>>
>>> ------------------------------****----------------------------**
>>> --**---------
>>> To unsubscribe, e-mail: user-unsubscribe@commons.**apa**che.org<http://apache.org>
>>> <user-unsubscribe@**commons.apache.org<user-unsubscribe@commons.apache.org>
>>> >
>>>
>>> For additional commands, e-mail: user-help@commons.apache.org
>>>
>>>
>>>
>>
>>
>
> ------------------------------**------------------------------**---------
> To unsubscribe, e-mail: user-unsubscribe@commons.**apache.org<user-unsubscribe@commons.apache.org>
> For additional commands, e-mail: user-help@commons.apache.org
>
>


-- 

Tim Bessie
Meez, Inc.
tbessie@meez.com

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message