Component Descriptor Editor (CDE) allows creation of CAS Types where the fully qualified type is the same as some package name in the "classpath", or where the fully qualified type includes a namespace which is already a class name in the classpath. This causes a "collision" when the JCas is generated.
There is also a possibility for ambiguity for CAS type names that end in _Type. This should be disallowed.
These checks may want to be put into the uima core, not just into the CDE.