The JavaBeansDataBinding does not provide an exception handler
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Key: TUSCANY-1515
URL: https://issues.apache.org/jira/browse/TUSCANY-1515
Project: Tuscany
Issue Type: Bug
Components: Java SCA Data Binding Runtime
Affects Versions: Java-SCA-0.90, Java-SCA-0.91, Java-SCA-Next
Environment: svn revision 563847
Reporter: Matthew Sykes
Priority: Minor
Fix For: Java-SCA-Next
The DefaultDataBindingExtensionPoint does explicitly omits classes that extend
java.lang.Throwable from being associated with the JavaBeansDataBinding.
Without an association with the JavaBeansDataBinding (or some other "default"
databinding), fault transformations from POJO exceptions to some other
databinding do not occur as the transformation chain can't be established. The
symptom of this is a new TransformationException("Target fault type cannot be
resolved") getting thrown from the DataTransformationInterceptor.
After removing the code in the DefaultDataBindingExtensionPoint that explicitly
omits java.lang.Throwable classes from being associated with the
JavaBeansDataBinding, an ExceptionHandler needed to be created for the
JavaBeansDataBinding. An initial, naive implementation is attached as a patch.
This implementation will simply act as a holder of the original exception and
return it on createException.
With these changes the Exception2ExceptionTransformer was able to establish a
transformation from the JavaBeansDataBinding to a custom DataBinding
implementation. Further work may be needed in the exception handler.
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