I've always to make a simple mapper that was based on json or some other flat file accessible from the web so that configuration could be created easily from a web page.

Basically you new up the DynamicObjectMapper and on the map method you pass in a simple instance (read-as: pretty much a flat object) and with some JSON deserialized to some Mapper config objects you have a new System.Dynamic object to play with.

You have simple map commands for the following:

• Direct field map
• Concat fields
• Flatten simple lists to csv
• Add
• Subtract
• Multiply
• Divide (just haven't done it yet)
• No conditionals are supported yet but I figure as soon as I figure that out it will have been a rewrite to F# anyways.