Rob Walker created CONFIGURATION-837:
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Summary: MapConfiguration$1 does not implement Cloneable exception
Key: CONFIGURATION-837
URL: https://issues.apache.org/jira/browse/CONFIGURATION-837
Project: Commons Configuration
Issue Type: Bug
Affects Versions: 1.10
Reporter: Rob Walker
Note sure if 1.10 is actively maintained, but there's an issue with cloning
MapConfiguration objects.
When trying to convert using an interpolatedConfiguration:
{{Map expanded =
ConfigurationConverter.getProperties(launchConfig.interpolatedConfiguration());}}
The following exception is thrown
{{org.apache.commons.configuration.ConfigurationRuntimeException:
java.lang.reflect.InvocationTargetException at
org.apache.commons.configuration.ConfigurationUtils.clone(ConfigurationUtils.java:325)
at
org.apache.commons.configuration.ConfigurationUtils.cloneConfiguration(ConfigurationUtils.java:282)
at
org.apache.commons.configuration.CombinedConfiguration.clone(CombinedConfiguration.java:670)
at
org.apache.commons.configuration.HierarchicalConfiguration.interpolatedConfiguration(HierarchicalConfiguration.java:937)
at com.ascert.vt.launch.VtLauncher.launchFelix(VtLauncher.java:1220) Caused
by: java.lang.reflect.InvocationTargetException at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566) at
org.apache.commons.configuration.ConfigurationUtils.clone(ConfigurationUtils.java:311)
... 7 more Caused by:
org.apache.commons.configuration.ConfigurationRuntimeException:
java.lang.CloneNotSupportedException:
org.apache.commons.configuration.MapConfiguration$1 does not implement
Cloneable at
org.apache.commons.configuration.MapConfiguration.clone(MapConfiguration.java:249)
... 12 more Caused by: java.lang.CloneNotSupportedException:
org.apache.commons.configuration.MapConfiguration$1 does not implement
Cloneable at
org.apache.commons.configuration.ConfigurationUtils.clone(ConfigurationUtils.java:330)
at
org.apache.commons.configuration.MapConfiguration.clone(MapConfiguration.java:242)
... 12 more}}
The issue seems to be caused by extending AbstractMap as an anyonymous return
class. From line 253 of MapConfiguration:
{{ /**}}
{{ * Helper method for copying all string keys from the given}}
{{ * \{@code Properties} object to a newly created map.}}
{{ *}}
{{ * @param props the \{@code Properties} to be copied}}
{{ * @return a newly created map with all string keys of the properties}}
{{ */}}
{{ private static Map<String, Object> convertPropertiesToMap(final
Properties props)}}
{{ {}}
{{ return new AbstractMap<String, Object>() {}}{{ @Override}}
{{ public Set<Map.Entry<String, Object>> entrySet()}}
This class does not implement Cloneable as noted in the error message. Just
looking for a decent solution, but returning some inner subclass which supports
cloneable seems the way to go.
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