Annotation to map query parameter to event handler method
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                 Key: TAPESTRY-2613
                 URL: https://issues.apache.org/jira/browse/TAPESTRY-2613
             Project: Tapestry
          Issue Type: New Feature
          Components: tapestry-core
    Affects Versions: 5.0.14
            Reporter: Howard M. Lewis Ship


It would be nice, is some cases, to have Tapestry map query parameters to event 
handler method parameters, rather than path info.  This is typically about the 
Ajax case, where it is more reliable (and easier) to take a URL and add query 
parameters to it than it is to add extra path info.

public void onActionFromAjaxWidget(@QueryParameter("action") String 
widgetAction, @QueryParameter("count") int count) { .... }

This does raise some tricky questions: i.e., what do you do when only some of 
the parameters have @QueryParameter?

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