We're dynamically generating some classes (javassist) and loading them at runtime, basically, they're simple extensions to POJO's with some new wrapper methods added.

What I want to do (as inefficient as this may be, but I can optimize using details within our code etc) is this:

Find the point in the IBatis 3.x code which determines the return type for a mapped statement. I've been debugging and tracing for awhile now, and there's a missing step I don't know how to trace (a dynamic proxy apparently?) which then forwards to:

MapperProxy.invoke(Object proxy, Method method, Object[] args). At this point, the best I can tell is that everything will now be (or already is?) based off of the Method object, which has the return type set on it. There's obviously no setter on this Method object for returnType, and I can't construct a new one (it's package-private constructor), and as far as I know I can't use javassist to modify an Object instance... I can't figure out how to change what returnType IBatis thinks it should be using.

Any help is greatly appreciated.

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