Thanks for your reply JB,

Yes, if I put the variables in custom.properties they can reference each
other directly. Given these lines in custom.properties:

*MyRootDir=C:/Temp*
*MySubDir=${MyRootDir}/Sub*

Gives the value "C:/Temp/Sub" for the variable "MySubDir".

Thanks!

I guess then that best practice is to use custom.properties for this? This
is good since it doesn't (should not) contain any configuration
out-of-the-box. I noticed that the karaf.systemBundlesStartLevel is defined
there. I think that should be removed.

Now if there was a way to specify that the custom.properties file should
reside somewhere else then I would be very happy. The reason is that we do
not want to put installation specific configuration in the Karaf
installation. Do you have an update regarding this?

/Bengt


2011/11/11 Jean-Baptiste Onofré <j...@nanthrax.net>

> Hi Bengt,
>
> the system.properties is not directly evaluate.
>
> Could you try to define your variable in the custom.properties ?
>
> Regards
> JB
>
>
> On 11/11/2011 03:51 PM, Bengt Rodehav wrote:
>
>> Hi,
>>
>> I'm using Karaf 2.2.3. We're using Karaf+Camel as the basis for an
>> integration platform. We use config admin extensively in order to define
>> camel routes. As a convenience we define variables (in
>> system.properties) that can be used in the different configurations. E g
>> defining a "dataRoot" variable that the specifies a root directory in
>> the file system that routes can relate to.
>>
>> If I, in system.properties specify the following:
>>
>> dataRoot = D:/data
>> customer1Root = ${dataRoot}/customer1
>>
>> Then the value of "customer1Root" will be "/customer1". The
>> "${dataRoot}" evaluates to an empty string. Why is that? If I instead
>> define "dataRoot" as a real system property (using the -D option to the
>> JVM) then it works.
>>
>> In my configuration files (parsed by fileinstall) it works to use the
>> ${...} notation to refer to variables in system.properties. What then
>> does not seem to work is if I in system.properties try to refer to
>> another variable defined in system.properties.
>>
>> This seems like a bug to me.
>>
>> I would also like to find out what the status is on the redesign of
>> system.properties. I would very much like the possibility to add my
>> specific variables outside of the Karaf installation. I already create a
>> custom distribution but the variables need to be added on a per
>> installation basis. The customer himself decides what convenience
>> variables are needed and I don't want the customer to fiddle with the
>> Karaf installation.
>>
>> The functionality I'm looking for is something like this: Somewhere in
>> the Karaf configuration I would like to specify that Karaf should read
>> variable definitions from a file (or list of files) that I specify. I
>> can then separate my, installation specific, variables from the standard
>> Karaf installation. I have brought this up before and was under the
>> impression that something like this was in scope for Karaf 3 (or even
>> earlier). What is the status of this kind of customisation?
>>
>> /Bengt
>>
>
> --
> Jean-Baptiste Onofré
> jbono...@apache.org
> http://blog.nanthrax.net
> Talend - http://www.talend.com
>

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