Converter for an XML-based communication interface

When calling the backend, the XML interface of the frontend must be mapped to the (much more extensive) XML interface of the backend. The Java programme required for this takes the XML of the frontend, converts it into an equivalent XML for the backend. Then the desired calculation kernel is called and its response in the form of a result XML is then converted back into the format of the frontend so that the result can be displayed. The solution is desired in the form of an integrated Chrome application, as this does not restrict the circle of users and significantly reduces the effort.