/**
* Add custom binders assigned to the method
*
* <p>Custom binders assigned to the method will be added to the binding manager instance.
*
* @param manager the manager to add binders to
* @param method the method to evaluate for additional binders
*/
protected static void addMethodBinders(final BindingManager manager, final Method method) {
final ControllerBinder[] binders = method.getAnnotationsByType(ControllerBinder.class);
if (binders == null) {
return;
}
for (final ControllerBinder binder : binders) {
try {
final Binder binderImpl = binder.value().newInstance();
if (binderImpl instanceof ControllerBinderParametersAware) {
((ControllerBinderParametersAware) binderImpl).setParameters(binder.parameters());
}
manager.addBinder(binderImpl);
} catch (InstantiationException | IllegalAccessException e) {
manager.addBinder(new ErrorBinder(e));
}
}
}
protected RequestHandler processCall(
final Match match, final HttpServletRequest request, final HttpServletResponse response)
throws Exception {
final Map<String, Object> data = new HashMap<String, Object>();
data.put("request", request);
data.put("response", response);
data.put("session", request.getSession());
data.put("principal", request.getUserPrincipal());
// create new binding manager
final BindingManager manager = BindingManager.create(data);
// add controller binders
manager.addBinder(new RequestParameterBinder(request));
manager.addBinder(new PathVariableBinder(match));
manager.addBinder(new FormDataBinder(request, this.controller));
addMethodBinders(manager, this.m);
final de.dentrassi.osgi.web.controller.binding.BindingManager.Call call =
manager.bind(this.m, this.controller);
final Object result = call.invoke();
if (result instanceof ModelAndView) {
return new ModelAndViewRequestHandler(
(ModelAndView) result, this.controller.getClass(), this.m);
} else if (result instanceof String) {
return new ModelAndViewRequestHandler(
new ModelAndView((String) result), this.controller.getClass(), this.m);
} else if (result == null) {
return new NoOpRequestHandler();
} else {
throw new IllegalStateException(
String.format("Response type %s is unsupported", result.getClass()));
}
}