On a recent trip to Korea, a customer asked a great question about how to implement a metadata-driven custom DataAction that needed access to a "Metadata" or "System" data control on each request. They weren't keen on manually registering the SystemDataControl in each application's DataBindings.cpx file, so we came up with an example solution based on a servlet filter that insures the "System" data control is registered dynamically in the binding context.
See example #48 in my list of not-yet-documented sample applications.
8:06:32 AM 
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