/** * Search a wiring method in the specified class. * * @param cl the class where to find the method * @param methodName the method to be searched * @return the requested method, if it fully conforms to the definition of the wiring methods. */ private static Method getMethod(Class cl, String methodName) throws NoSuchMethodException, ClassNotFoundException { // Search methods Method[] methods = cl.getMethods(); ArrayList<Method> list = new ArrayList<Method>(); for (Method m : methods) { if (m.getName().equals(methodName)) { list.add(m); } } if (list.size() == 0) { throw new NoSuchMethodException( "No method " + methodName + " in class " + cl.getSimpleName()); } else if (list.size() > 1) { throw new NoSuchMethodException( "Multiple methods called " + methodName + " in class " + cl.getSimpleName()); } // Found a single method with the right name; check if // it is a setter. final Class graphClass = Class.forName("peersim.graph.Graph"); final Class randomClass = Class.forName("java.util.Random"); Method method = list.get(0); Class[] pars = method.getParameterTypes(); if (pars.length < 1 || !pars[0].isAssignableFrom(graphClass)) throw new NoSuchMethodException( method.getName() + " of class " + cl.getSimpleName() + " is not a valid graph wiring method," + " it has to have peersim.graph.Graph as first argument type"); for (int i = 1; i < pars.length; ++i) if (!(pars[i] == int.class || pars[i] == long.class || pars[i] == double.class || (i == pars.length - 1 && pars[i].isAssignableFrom(randomClass)))) throw new NoSuchMethodException( method.getName() + " of class " + cl.getSimpleName() + " is not a valid graph wiring method"); if (method.toString().indexOf("static") < 0) throw new NoSuchMethodException( method.getName() + " of class " + cl.getSimpleName() + " is not a valid graph wiring method; it is not static"); return method; }