]> git.mxchange.org Git - jcoreee.git/blob - src/org/mxchange/jcoreee/validator/string/BaseStringValidator.java
Boolean is an object, boolean a primitive variable, better use objects
[jcoreee.git] / src / org / mxchange / jcoreee / validator / string / BaseStringValidator.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.jcoreee.validator.string;
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.ValidatorException;
24 import org.mxchange.jcoreee.validator.BaseObjectValidator;
25
26 /**
27  * A general string validation class. You normally want to inherit from this
28  * class for many form fields, e.g. surname, street name, city name and such.
29  * <p>
30  * @author Roland Häder<roland@mxchange.org>
31  */
32 public abstract class BaseStringValidator extends BaseObjectValidator {
33
34         /**
35          * Serial number
36          */
37         private static final long serialVersionUID = 15_484_578_781_760_287L;
38
39         @Override
40         protected void preValidate (final FacesContext context, final UIComponent component, final Object value, final String[] requiredFields, Boolean allowNull) throws ValidatorException {
41                 // Trace message
42                 //* NOISY-DEBUG: */ System.out.println(MessageFormat.format("preValidate: context={0},component={1},value={2},fields={3} - CALLED!", context, component, value, Arrays.toString(requiredFields))); //NOI18N
43
44                 // Pre-validate (example: on null)
45                 super.preValidate(context, component, value, requiredFields, allowNull);
46
47                 // Get client id and init message + key
48                 String clientId = component.getClientId();
49                 FacesMessage facesMessage = null;
50
51                 // So far all fine, no check if the field is fine
52                 for (final String field : requiredFields) {
53                         // Debug message
54                         //this.getLogger().logDebug(MessageFormat.format("preValidate: field={0},clientId={1}", field, clientId)); //NOI18N
55
56                         // Is it the same?
57                         if (clientId.endsWith(field)) {
58                                 // Compare value's type
59                                 if ((!allowNull) && (!(value instanceof String))) {
60                                         // Value is empty
61                                         facesMessage = new FacesMessage(MessageFormat.format("Field {0} is not String: {1}", field, value)); //NOI18N
62                                 }
63
64                                 // Cast to string
65                                 String str = (String) value;
66
67                                 // Is it empty?
68                                 if (str.isEmpty()) {
69                                         // Generate message
70                                         facesMessage = new FacesMessage(MessageFormat.format("Field {0} is empty.", field)); //NOI18N
71                                 }
72                         }
73                 }
74
75                 // Debug message
76                 //this.getLogger().logDebug(MessageFormat.format("preValidate: facesMessage={0}", facesMessage)); //NOI18N
77
78                 // Is it not null?
79                 if (null != facesMessage) {
80                         throw new ValidatorException(facesMessage);
81                 }
82
83                 // Trace message
84                 //* NOISY-DEBUG: */ System.out.println("preValidate: EXIT!"); //NOI18N
85         }
86 }