Grails object marshalling - adding data type hints?

I'd like to be able to have something like this:

<form>
<input type="date" name="params.date"/>
<input type="text" name="params.myString"/>
</form>

And marshall this to

Map<String, Object> params
   ['date': (Date object),
    'myString': (String)]

inside of a command object holder as such:

class Holder{
   def params
   def unshownAttributes
}

I thought about doing some hackery involving javascript to parse out a data-type HTML5 attribute and prepren开发者_C百科ding the name (and fixing up the types later), but I was hoping there was a better way to do this automatically with groovy or grails.

Any thoughts?

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No such mechanism currently exists. You may save yourself some pain by just creating methods for every marshalling instance you need with proper command objects.