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[pizzaservice-war.git] / src / java / org / mxchange / pizzaapplication / validator / user / PizzaUserIdValidator.java
1 /*
2  * Copyright (C) 2016, 2017 Roland Häder
3  *
4  * This program is free software: you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation, either version 3 of the License, or
7  * (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
16  */
17 package org.mxchange.pizzaapplication.validator.user;
18
19 import java.text.MessageFormat;
20 import javax.faces.application.FacesMessage;
21 import javax.faces.component.UIComponent;
22 import javax.faces.context.FacesContext;
23 import javax.faces.validator.FacesValidator;
24 import javax.faces.validator.ValidatorException;
25 import javax.naming.Context;
26 import javax.naming.InitialContext;
27 import javax.naming.NamingException;
28 import org.mxchange.jcoreee.validator.number.BaseNumberValidator;
29 import org.mxchange.jusercore.model.user.UserSessionBeanRemote;
30
31 /**
32  * A validator for user ids
33  * <p>
34  * @author Roland Häder<roland@mxchange.org>
35  */
36 @FacesValidator ("UserIdValidator")
37 public class PizzaUserIdValidator extends BaseNumberValidator {
38
39         /**
40          * Remote bean
41          */
42         private static UserSessionBeanRemote USER_BEAN;
43
44         /**
45          * Serial number
46          */
47         private static final long serialVersionUID = 12_869_569_314_764_690L;
48
49         /**
50          * Default constructor
51          */
52         public PizzaUserIdValidator () {
53         }
54
55         @Override
56         public void validate (final FacesContext context, final UIComponent component, final Object value) throws ValidatorException {
57                 // Is the instance there?
58                 if (USER_BEAN == null) {
59                         try {
60                                 // Not yet, attempt lookup
61                                 Context initial = new InitialContext();
62
63                                 // Lookup EJB
64                                 USER_BEAN = (UserSessionBeanRemote) initial.lookup("java:global/jfinancials-ejb/user!org.mxchange.jusercore.model.user.UserSessionBeanRemote");
65                         } catch (final NamingException ex) {
66                                 // Throw it again
67                                 throw new ValidatorException(new FacesMessage(FacesMessage.SEVERITY_ERROR, "Cannot lookup EJB", ex.getMessage()), ex);
68                         }
69                 }
70
71                 // All accepted, required fields
72                 String[] requiredFields = {"userId"}; //NOI18N
73
74                 // Pre-validation (example: not null, not a string, empty string ...)
75                 super.preValidate(context, component, value, requiredFields, false);
76
77                 // Cast value
78                 Long userId = (Long) value;
79
80                 // Define variable
81                 Boolean ifUserExists = USER_BEAN.ifUserIdExists(userId);
82
83                 // Is the user id valid?
84                 if (!ifUserExists) {
85                         // Is not valid
86                         throw new ValidatorException(new FacesMessage(MessageFormat.format("No user found with id {0}. Please check your link.", userId))); //NOI18N
87                 }
88         }
89
90 }