/***
* Copyright (c) 2009 Caelum - www.caelum.com.br/opensource
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package br.com.caelum.vraptor.mydvds.controller;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.notNullValue;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import br.com.caelum.vraptor.Get;
import br.com.caelum.vraptor.Post;
import br.com.caelum.vraptor.Resource;
import br.com.caelum.vraptor.Result;
import br.com.caelum.vraptor.Validator;
import br.com.caelum.vraptor.ioc.ComponentFactory;
import br.com.caelum.vraptor.mydvds.dao.DefaultUserDao;
import br.com.caelum.vraptor.mydvds.dao.UserDao;
import br.com.caelum.vraptor.mydvds.interceptor.Public;
import br.com.caelum.vraptor.mydvds.interceptor.UserInfo;
import br.com.caelum.vraptor.mydvds.model.User;
import br.com.caelum.vraptor.validator.Validations;
/**
* This class will be responsible to login/logout users.
* We will use VRaptor URI conventions for this class.
*
* For accessing the method doStuff of the class SomethingController,
* the URI is: /something/doStuff
*
*/
@Resource
public class HomeController {
private final Result result;
private final Validator validator;
private final UserInfo userInfo;
private final UserDao dao;
/**
* You can receive any dependency on constructor. If VRaptor knows all dependencies, this
* class will be created with no problem. You can use as dependencies:
* - all VRaptor components, e.g {@link Result} and {@link Validator}
* - all of your classes annotated with @Component, e.g {@link DefaultUserDao}
* - all of the classes that have a {@link ComponentFactory}, e.g {@link Session} or {@link SessionFactory}
*/
public HomeController(UserDao dao, UserInfo userInfo, Result result, Validator validator) {
this.dao = dao;
this.result = result;
this.validator = validator;
this.userInfo = userInfo;
}
/**
* Since we are using the convention, the URI for this method is
* /home/login
*
* The method parameters are set with request parameters named
* login and password. Thus if we have the request:
*
* POST /home/login
* login=john
* password=nobodyknows
*
* VRaptor will call:
* homeController.login("john", "nobodyknows");
*
* This method only accept POST requests
*/
@Post
@Public
public void login(String login, String password) {
// search for the user in the database
final User currentUser = dao.find(login, password);
// if no user is found, adds an error message to the validator
// "invalid_login_or_password" is the message key from messages.properties,
// and that key is used with the fmt taglib in index.jsp, for example: <fmt:message key="error.key">
validator.checking(new Validations() {{
that(currentUser, is(notNullValue()), "login", "invalid_login_or_password");
}});
// you can use "this" to redirect to another logic from this controller
validator.onErrorUsePageOf(this).login();
// the login was valid, add user to session
userInfo.login(currentUser);
// we don't want to go to default page (/WEB-INF/jsp/home/login.jsp)
// we want to redirect to the user's home
result.redirectTo(UsersController.class).home();
}
/**
* Using the convention, the URI for this method is
* /home/logout
*/
public void logout() {
userInfo.logout();
// after logging out, we want to be redirected to home index.
// you can use "this" to redirect to another logic from this controller
result.redirectTo(this).login();
}
/**
* We should not provide direct access to jsps, so we need to have an empty method
* for redirecting to jsp. In this case we will use the root URI, which will be
* redirected to jsp /WEB-INF/jsp/home/login.jsp
*
* This method only accepts GET requests
*/
@Public
@Get
public void login() {
}
}