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From Thomas Mortagne <thomas.morta...@gmail.com>
Subject Re: [configuration] Creating a properties file
Date Thu, 31 Aug 2017 06:12:58 GMT
OK but my use case is that the file may or may not already exist and
if it already exist I need to modify it, not overwrite it.

My point is that I did not really needed to care about that in 1.x.

On Wed, Aug 30, 2017 at 5:49 PM, Oliver Heger
<oliver.heger@oliver-heger.de> wrote:
> Hi Thomas,
>
> Am 30.08.2017 um 10:56 schrieb Thomas Mortagne:
>> Here is what I currently do:
>>
>>             PropertiesBuilderParameters parameters = new
>> Parameters().properties();
>>             if (file.exists()) {
>>                 new Parameters().properties().setFile(file);
>>             }
>>
>>             FileBasedConfigurationBuilder<PropertiesConfiguration> builder
=
>>                 new
>> FileBasedConfigurationBuilder<PropertiesConfiguration>(PropertiesConfiguration.class)
>>                     .configure(parameters);
>>             PropertiesConfiguration properties = builder.getConfiguration();
>>
>>             properties.setProperty("property", "value");
>>
>>             builder.getFileHandler().save(file);
>>
>> but I find it more complex than it should.
>
> one option would be to create the PropertiesConfiguration directly,
> populate it, and then save it using a FileHandler. This would roughly
> look something like the following:
>
> PropertiesConfiguration config = new PropertiesConfiguration();
> config.addProperty(...);
>
> FileHandler handler = new FileHandler(config);
> File out = new File("union.properties");
> handler.save(out);
>
> More information can be found in the user's guide in the section about
> file-based configurations [1].
>
> HTH
> Oliver
>
> [1]
> http://commons.apache.org/proper/commons-configuration/userguide/howto_filebased.html#File_Operations_on_Configurations
>
>>
>> IMO the file handler should not care if the file exist or not by
>> default (empty PropertiesConfiguration as in 1.x if it does not exist)
>> and only fail if asked to in the parameters of the builder. At the
>> very least it should be possible to have some way to tell the builder
>> to not care about not existing file.
>>
>> On Wed, Aug 30, 2017 at 10:37 AM, Thomas Mortagne
>> <thomas.mortagne@gmail.com> wrote:
>>> Hi,
>>>
>>> I trying to move from Commons Configuration 1.x to 2.1.1 and I cannot
>>> figure out how to do something that used to be obvious: creating a
>>> properties file that does not yet exist on the file system.
>>>
>>> In 1.x all I had to do is create a PropertiesConfiguration with a
>>> File, set a few properties and then save.
>>>
>>> In 2.1.1 I cannot find how to configure the build for it to accept a
>>> path to a file that does not exist, I always end up with:
>>>
>>> org.apache.commons.configuration2.ex.ConfigurationException: Could not
>>> locate: org.apache.commons.configuration2.io.FileLocator@28d79cba[fileName=store.properties,basePath=/media/data/projets/xwiki/src/git/xwiki-commons/xwiki-commons-core/xwiki-commons-job/target/test/jobs/status,sourceURL=,encoding=ISO-8859-1,fileSystem=<null>,locationStrategy=<null>]
>>>     at org.apache.commons.configuration2.io.FileLocatorUtils.locateOrThrow(FileLocatorUtils.java:346)
>>>     at org.apache.commons.configuration2.io.FileHandler.load(FileHandler.java:972)
>>>     at org.apache.commons.configuration2.io.FileHandler.load(FileHandler.java:702)
>>>
>>> and from what I see in FileHandler sources it not really configurable.
>>>
>>> So did I missed something or am I really supposed to create an empty
>>> file before using the builder ?
>>>
>>> Thanks,
>>> --
>>> Thomas
>>
>>
>>
>
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-- 
Thomas

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