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https://issues.apache.org/jira/browse/CONFIGURATION-618?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Oliver Heger resolved CONFIGURATION-618.
----------------------------------------
Resolution: Fixed
Fix Version/s: 2.0
Fixed in svn in revision 1728999.
Many thanks for the report!
> Accessing missing properties of immutable subset throws
> UndeclaredThrowableException instead of NoSuchElementException
> ----------------------------------------------------------------------------------------------------------------------
>
> Key: CONFIGURATION-618
> URL: https://issues.apache.org/jira/browse/CONFIGURATION-618
> Project: Commons Configuration
> Issue Type: Bug
> Affects Versions: 2.0-beta2
> Environment: Oracle JDK 1.8.0_60
> Reporter: Robert Schimansky
> Priority: Minor
> Fix For: 2.0
>
>
> When I access a non-existing property of a configuration that has
> ThrowExceptionOnMissing set an java.lang.reflect.UndeclaredThrowableException
> is thrown. I think the desired behaviour would be to pass the underlying
> java.util.NoSuchElementException through from the
> ImmutableConfigurationInvocationHandler.
> Example code:
> {code}
> import org.apache.commons.configuration2.ImmutableConfiguration;
> import org.apache.commons.configuration2.PropertiesConfiguration;
> public class ImmutableConfigurationStacktraceTest {
> public static void main(String[] args) {
> //create empty PropertiesConfiguration
> PropertiesConfiguration propertiesConfiguration = new
> PropertiesConfiguration();
> //throw error when non-existing property is requested
> propertiesConfiguration.setThrowExceptionOnMissing(true);
>
> //get immutable subset handled by
> ImmutableConfigurationInvocationHandler
> ImmutableConfiguration subset =
> propertiesConfiguration.immutableSubset("");
>
> //this should throw java.util.NoSuchElementException
> subset.getString("whoops!");
> }
> }
> {code}
> gives the stacktrace:
> {code}
> Exception in thread "main" java.lang.reflect.UndeclaredThrowableException
> at com.sun.proxy.$Proxy0.getString(Unknown Source)
> at test.main(test.java:10)
> Caused by: java.lang.reflect.InvocationTargetException
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:497)
> at
> org.apache.commons.configuration2.ImmutableConfigurationInvocationHandler.invoke(ImmutableConfigurationInvocationHandler.java:79)
> ... 2 more
> Caused by: java.util.NoSuchElementException: Key 'whoops!' does not map to an
> existing object!
> at
> org.apache.commons.configuration2.AbstractConfiguration.throwMissingPropertyException(AbstractConfiguration.java:1873)
> at
> org.apache.commons.configuration2.AbstractConfiguration.convert(AbstractConfiguration.java:1784)
> at
> org.apache.commons.configuration2.AbstractConfiguration.getString(AbstractConfiguration.java:1343)
> ... 7 more
> {code}
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