[jira] [Created] (CONFIGURATION-792) commons-configuration 1.10 breaks code that worked with 1.9

["Norbert Kiesel (Jira)" <ji...@apache.org>]

Norbert Kiesel created CONFIGURATION-792:
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             Summary: commons-configuration 1.10 breaks code that worked with 1.9
                 Key: CONFIGURATION-792
                 URL: https://issues.apache.org/jira/browse/CONFIGURATION-792
             Project: Commons Configuration
          Issue Type: Bug
    Affects Versions: 1.10
            Reporter: Norbert Kiesel


CONFIGURATION-556 changed how ConfigurationConverter.getConfiguration works: in 1.9, the Properties content was read into a newly created HashMap but in 1.10 this was changed to use the Properties as backing.  While this allows to have changes to the Properties immediately reflected in the configuration, it breaks code that adds new entries to such a configuration.

Example:

 
{code:java}
Properties properties = new Properties();
properties.load(Files.newInputStream(Paths.get("sample.properties")));
Configuration conf = ConfigurationConverter.getConfiguration(properties);
configuration.setProperty("version", "1.10");
{code}
will work in 1.9 but result in a NPE in 1.10.

I understand that there are conflicting goals (compatibility with 1.7 or 1.9) but I think this should minimally be listed as a potential problem for upgrades to 1.10

 

 



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