2 * Copyright (C) 2016, 2017 Roland Häder
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.
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.
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/>.
17 package org.mxchange.jcoreee.validator.number;
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;
27 * A general number value validator.
29 * @author Roland Häder<roland@mxchange.org>
31 public abstract class BaseNumberValidator extends BaseObjectValidator<Object> {
36 private static final long serialVersionUID = 25_481_878_590_589_321L;
39 public void preValidate (final FacesContext context, final UIComponent component, final Object value, final String[] requiredFields, Boolean allowNull) throws ValidatorException {
41 //* NOISY-DEBUG: */ System.out.println(MessageFormat.format("preValidate: context={0},component={1},value={2},requiredFields={3},allowNull={4} - CALLED!", context, component, value, Arrays.toString(requiredFields, allowNull))); //NOI18N
44 super.preValidate(context, component, value, requiredFields, allowNull);
46 // Get client id and init message + key
47 String clientId = component.getClientId();
48 String requiredMessage = null;
50 // So far all fine, no check if the field is fine
51 for (final String field : requiredFields) {
53 //this.getLogger().logDebug(MessageFormat.format("preValidate: field={0},clientId={1}", field, clientId)); //NOI18N
56 if (clientId.endsWith(field)) {
60 // Compare value's type, supported: String, Long, Integer
61 if (value instanceof String) {
62 // Is a string, then try to parse it as Long, largest range
64 number = Long.valueOf((String) value);
65 } catch (final NumberFormatException ex) {
66 // Cannot parse string to long
67 requiredMessage = MessageFormat.format("Field {0} cannot be parsed to long: {1}, exception:{2}", field, value, ex);
69 // Abort processing here
72 } else if ((value instanceof Integer) || (value instanceof Long) || (value instanceof Short)) {
74 number = (Number) value;
77 // Is the number below zero? Casting again largest range will not result in unexpected comparison
78 if ((!allowNull) && ((number instanceof Number) && ((Long) number < 0))) {
80 requiredMessage = MessageFormat.format("Value {0} for field {1} is below zero.", number, field); //NOI18N
82 // Abort processing here
88 // Is facesMessage set?
89 if (null != requiredMessage) {
91 throw new ValidatorException(new FacesMessage(FacesMessage.SEVERITY_ERROR, requiredMessage, requiredMessage));