Roughly done

	- It doesn't work. The WSDL is wrong. I don't know why netbeans
	doesn't do the right thing when reading the "@XmlTransient" annotation.
	So it includes private variables from the java class that shouldn't
	appear in the WSDL file.
	- I haven't done any test so there will be probably many implementation
	errors...
	- I haven't focused on the algorithmic efficiency of the functionality
	of the service. It sucks inside but it works for a few examples from
	the outside, just to have the basic idea...