Examples of org.mojavemvc.exception.ConfigurationException

org.mojavemvc.exception.ConfigurationException

Signals that the application is using the framework's annotations incorrectly. This exception will typically be thrown during the initialization of the front controller. It will prevent the application from starting up, as it cannot do so correctly given the state of the annotation-defined configuration.
@author Luis Antunes

     */
    public ActionSignature getActionMethodSignature(Class<?> controllerClass, String action) {


        Map<String, ActionSignature> actionMap = controllerClassToActionMap.get(controllerClass);
        if (actionMap == null) {
            throw new ConfigurationException("no actions defined for " + controllerClass.getName());
        }
        return actionMap.get(action);
    }

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            if (annot instanceof StatelessController || annot instanceof StatefulController
                    || annot instanceof SingletonController) {


                if (controllerAnnotation != null) {
                    throw new ConfigurationException("controller " + controllerClass.getName()
                            + " is annotated with multiple controller annotations");
                }


                controllerAnnotation = annot;
            }
        }


        if (controllerAnnotation == null) {
            throw new ConfigurationException("controller " + controllerClass.getName()
                    + " not annotated with a controller annotation");
        }


        return controllerAnnotation;
    }

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         * check if this controller variable already exists; if so raise an
         * exception
         */
        Class<?> existing = controllerClassesMap.get(controllerClass);
        if (existing != null) {
            throw new ConfigurationException("a controller variable with the value " + controllerVariable
                    + " already exists");
        }
        controllerClassesMap.put(controllerVariable, controllerClass);
        checkForInitController(controllerClass);
        boolean isDefaultController = checkForDefaultController(controllerClass);

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        Annotation annot = controllerClass.getAnnotation(Init.class);
        if (annot != null) {
            /* do some validation */
            annot = controllerClass.getAnnotation(SingletonController.class);
            if (annot == null) {
                throw new ConfigurationException("only a @" + SingletonController.class.getSimpleName()
                        + " can be annotated with @" + Init.class.getSimpleName());
            }
            initControllers.add(controllerClass);
        }
    }

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    private boolean checkForDefaultController(Class<?> controllerClass) {


        Annotation annot = controllerClass.getAnnotation(DefaultController.class);
        if (annot != null) {
            if (defaultControllerClass != null) {
                throw new ConfigurationException("only one controller class can be annotated with @"
                        + DefaultController.class.getSimpleName());
            }
            defaultControllerClass = controllerClass;
            return true;
        }

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         */
        if (actionMap.isEmpty() && httpMethodActionMap.isEmpty()
                && controllerClassToDefaultActionMap.get(controllerClass) == null
                && controllerClassToAfterConstructMap.get(controllerClass) == null) {


            throw new ConfigurationException("controller " + controllerClass.getName()
                    + " does not contain any actions or after-construct methods");
        }


        controllerClassToActionMap.put(controllerClass, actionMap);
        controllerClassToActionInterceptorsMap.put(controllerClass, actionInterceptorsMap);

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        validateActionReturnType(actionMethod, fastClass.getJavaClass().getName());


        ActionSignature existingActionSignature = httpMethodActionMap.get(httpMethod);
        if (existingActionSignature != null) {


            throw new ConfigurationException("mulitple action methods for " + httpMethod + " found; "
                    + "only one action method per HTTP method type is allowed in " + 
                    fastClass.getJavaClass().getName());
        }
        
        EntityMarshaller paramMarshaller = getParamEntityMarshaller(actionMethod,

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            }
        }
        if (!entityAnnotations.isEmpty()) {
            
            if (entityAnnotations.size() > 1) {
                throw new ConfigurationException("action " + method.getName() + " in controller "
                        + className + " has more than one " + Entity.class.getName() + " annotation");
            }
            
            Expects expectsAnn = method.getAnnotation(Expects.class);
            if (expectsAnn == null) {
                throw new ConfigurationException("action " + method.getName() + " in controller "
                        + className + " has an " + Entity.class.getName() + " annotation, but no "
                        + Expects.class.getName() + " exists");
            }
            String contentType = expectsAnn.value();
            EntityMarshaller marshaller = entityMarshallerMap.get(contentType);

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    private void validateActionReturnType(Method actionMethod, String className) {


        Class<?> returnType = actionMethod.getReturnType();
        if (returnType.equals(Void.TYPE)) {


            throw new ConfigurationException("action " + actionMethod.getName() + " in controller "
                    + className + " must return " + View.class.getName() + " or one of its subtypes, " +
                            "or an object to be marshalled, but not void");
            
        } else if (!View.class.isAssignableFrom(returnType) && 
                actionMethod.getAnnotation(Returns.class) == null) {
            
            throw new ConfigurationException("action " + actionMethod.getName() + " in controller "
                    + className + " does not return a " + View.class.getName() + " or one of its subtypes " +
                            "and does not specify a @" + Returns.class.getName() + " annotation");
            
        } else if (View.class.isAssignableFrom(returnType) && 
                actionMethod.getAnnotation(Returns.class) != null) {
            
            throw new ConfigurationException("action " + actionMethod.getName() + " in controller "
                    + className + " returns a " + View.class.getName() + " or one of its subtypes " +
                            "and specifies a @" + Returns.class.getName() + " annotation");
        }
    }

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    }
    
    private void validateParamPath(String paramPath, Method method, String controllerName) {
        
        if (paramPath == null || paramPath.trim().length() == 0) {
            throw new ConfigurationException("Param path for method " + method.getName() + 
                    " in controller " + controllerName + " is empty");
        }
        
        String[] params = ParamPathHelper.getParamNamesFrom(paramPath);
        String[] methodParams = ParamPathHelper.getParamNamesFrom(method);


        if (params.length > 0) {
            Set<String> paramsSet = new HashSet<String>(Arrays.asList(params));
            Set<String> methodParamsSet = new HashSet<String>(Arrays.asList(methodParams));
            if (!methodParamsSet.containsAll(paramsSet)) {
                throw new ConfigurationException("Param path " + paramPath + " for method " + method.getName() + 
                        " in controller " + controllerName + " contains params not found in the method params");
            }
        }
    }

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