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[addressbook-war.git] / src / java / org / mxchange / addressbook / validator / user / AddressbookUserIdValidator.java
1 /*
2  * Copyright (C) 2016 - 2022 Free Software Foundation
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.addressbook.validator.user;
18
19 import java.text.MessageFormat;
20 import javax.enterprise.inject.spi.CDI;
21 import javax.faces.application.FacesMessage;
22 import javax.faces.component.UIComponent;
23 import javax.faces.context.FacesContext;
24 import javax.faces.validator.FacesValidator;
25 import javax.faces.validator.ValidatorException;
26 import org.mxchange.addressbook.beans.user.list.AddressbookUserListWebViewBean;
27 import org.mxchange.addressbook.beans.user.list.AddressbookUserListWebViewController;
28 import org.mxchange.jcoreee.validator.number.BaseNumberValidator;
29
30 /**
31  * A validator for user ids
32  * <p>
33  * @author Roland Häder<roland@mxchange.org>
34  */
35 @FacesValidator ("UserIdValidator")
36 public class AddressbookUserIdValidator extends BaseNumberValidator {
37
38         /**
39          * User backing bean
40          */
41         private static AddressbookUserListWebViewController USER_LIST_CONTROLLER;
42
43         /**
44          * Serial number
45          */
46         private static final long serialVersionUID = 12_869_569_314_764_690L;
47
48         @Override
49         public void validate (final FacesContext context, final UIComponent component, final Object value) throws ValidatorException {
50                 // All accepted, required fields
51                 final String[] requiredFields = {"userId"}; //NOI18N
52
53                 // Pre-validation (example: not null, not a string, empty string ...)
54                 super.preValidate(context, component, value, requiredFields, false);
55
56                 // Is the instance there?
57                 if (null == USER_LIST_CONTROLLER) {
58                         // Get bean from CDI directly
59                         USER_LIST_CONTROLLER = CDI.current().select(AddressbookUserListWebViewBean.class).get();
60                 }
61
62                 // Cast value
63                 final Long userId = (Long) value;
64
65                 // Define variable
66                 final Boolean ifUserExists = USER_LIST_CONTROLLER.ifUserIdExists(userId);
67
68                 // Is the user id valid?
69                 if (!ifUserExists) {
70                         // Is not valid
71                         throw new ValidatorException(new FacesMessage(MessageFormat.format("No user found with id {0}. Please check your link.", userId))); //NOI18N
72                 }
73         }
74
75 }