[jira] [Commented] (CONFIGURATION-807) Method addProperty don't work if the property not exist in the file

[Oliver Heger (Jira)]

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https://issues.apache.org/jira/browse/CONFIGURATION-807?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17340900#comment-17340900
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Oliver Heger commented on CONFIGURATION-807:
--------------------------------------------

Sorry, my bad. I sent you a link to the old version of the user guide. [This 
page|https://commons.apache.org/proper/commons-configuration/userguide/howto_filebased.html#File_Operations_on_Configurations]
 describes how to save a configuration object. But the fundamental problem 
remains that you need to save the configuration and not the layout object.

> Method addProperty don't work if the property not exist in the file
> -------------------------------------------------------------------
>
>                 Key: CONFIGURATION-807
>                 URL: https://issues.apache.org/jira/browse/CONFIGURATION-807
>             Project: Commons Configuration
>          Issue Type: Bug
>    Affects Versions: 2.7
>            Reporter: Marco Di Falco
>            Priority: Major
>         Attachments: image-2021-05-07-12-06-03-339.png, 
> image-2021-05-07-12-09-33-450.png
>
>
> The method addProperty not append a NEW property in the file when the 
> property not exist.
>  I work with java 7.
>  I see that the new property don't compare in keys list, and when the 
> property is new.
> Example:
> {code:java}
> PropertiesConfiguration config = new PropertiesConfiguration();
> PropertiesConfigurationLayout layout = new PropertiesConfigurationLayout(); 
> layout.load(config, new InputStreamReader(new FileInputStream(zookeeper))); 
> String port = instance.getPort();
> config.setProperty("clientPort", port); 
> config.addProperty("prova","prova"); 
> layout.save(config, new FileWriter(zookeeper));
> {code}
> The property 'prova' don't appear in the file property after the save.
> I see in PropertiesConfigurationLayout.save, line 565, that the method  
> 'getKeys' don't contain the property 'prova', and the save lost this property.



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