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https://issues.apache.org/jira/browse/CONFIGURATION-259?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12484840
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Oliver Heger commented on CONFIGURATION-259:
--------------------------------------------
You are right that the merging facilities provided by ConfigurationFactory are
not as sophisticated as the ones supported by the newer
DefaultConfigurationBuilder class. Because DefaultConfigurationBuilder is
intended as a replacement for ConfigurationFactory my motivation for changing
this is somewhat limited. (If somebody provided a patch, I would be happy to
apply it of course.)
So would it be sufficient to add some notes to the documentation of
ConfigurationFactory (in the JavaDocs and in the user guide) that describe
these weakness and refer to DefaultConfigurationBuilder?
> ConfigurationFactory Merge is broken
> ------------------------------------
>
> Key: CONFIGURATION-259
> URL: https://issues.apache.org/jira/browse/CONFIGURATION-259
> Project: Commons Configuration
> Issue Type: Bug
> Affects Versions: 1.3
> Environment: Windows XP running Eclipse, JDK 1.4.2
> Reporter: Karl Banke
> Attachments: personendetails.xml, personensuche.xml, testconfig.xml,
> TestConfiguration.java
>
>
> I am trying to merge two Configuration using the ConfigurationFactory and the
> additional tag. It turns out that subsequent operations on the merged data
> provide wrong results. In particular, after creating a particular subset from
> a loaded configuration, the subset is empty. Strangely enough, when using
> DefaultConfigurationBuilder to load exactly the same configurations this
> works properly.
> So when initializing the configuration as follows, I get the following error:
> URL configURL = getClass().getResource(configFile);
> ConfigurationFactory factory = new ConfigurationFactory();
> factory.setConfigurationURL(configURL);
> myConfig = factory.getConfiguration();
> 60043
> java.util.NoSuchElementException: 'HvNr' doesn't map to an existing object
> at
> org.apache.commons.configuration.AbstractConfiguration.getLong(AbstractConfiguration.java:743)
> at
> de.awd.vertriebsportal.portal.person.TestConfiguration.main(TestConfiguration.java:84)
> Exception in thread "main"
> But when initializing it like this everything works properly
> DefaultConfigurationBuilder builder = new DefaultConfigurationBuilder();
> builder.setURL(configURL);
> myConfig = builder.getConfiguration();
> 60043
> 54564
> I will attach full source code and xml files
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