src/org/mxchange/jcoreee/validator/string/BaseStringValidator.java

   1 /*
   2  * Copyright (C) 2015 Roland Haeder
   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 javax.faces.application.FacesMessage;
  20 import javax.faces.component.UIComponent;
  21 import javax.faces.context.FacesContext;
  22 import javax.faces.validator.ValidatorException;
  23 import org.mxchange.jcoreee.validator.BaseObjectValidator;
  24
  25 /**
  26  * A general string validation class. You normally want to inherit from this
  27  * class for many form fields, e.g. surname, street name, city name and such.
  28  * <p>
  29  * @author Roland Haeder<roland@mxchange.org>
  30  */
  31 public abstract class BaseStringValidator extends BaseObjectValidator {
  32
  33         /**
  34          * Serial number
  35          */
  36         private static final long serialVersionUID = 15_484_578_781_760_287L;
  37
  38         @Override
  39         protected void preValidate (final FacesContext context, final UIComponent component, final Object value, final String[] requiredFields) throws ValidatorException {
  40                 // Trace message
  41                 //this.getLogger().logTrace(MessageFormat.format("preValidate: context={0},component={1},value={2},fields={3} - CALLED!", context, component, value, Arrays.toString(requiredFields))); //NOI18N
  42
  43                 // Pre-validate (e.g. on null)
  44                 super.preValidate(context, component, value, requiredFields);
  45
  46                 // Get client id and init message + key
  47                 String clientId = component.getClientId();
  48                 FacesMessage facesMessage = null;
  49                 String errKey;
  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 (!(value instanceof String)) {
  60                                         // Value is empty
  61                                         errKey = String.format("ERROR_%s_IS_NOT_STRING", field.toUpperCase()); //NOI18N
  62
  63                                         facesMessage = new FacesMessage(this.getMessageStringFromKey(errKey));
  64                                 }
  65
  66                                 // Cast to string
  67                                 String str = (String) value;
  68
  69                                 // Is it empty?
  70                                 if (str.isEmpty()) {
  71                                         // Value is empty
  72                                         errKey = String.format("ERROR_%s_IS_EMPTY", field.toUpperCase()); //NOI18N
  73
  74                                         facesMessage = new FacesMessage(this.getMessageStringFromKey(errKey));
  75                                 }
  76                         }
  77                 }
  78
  79                 // Debug message
  80                 //this.getLogger().logDebug(MessageFormat.format("preValidate: facesMessage={0}", facesMessage)); //NOI18N
  81                 // Is it not null?
  82                 if (null != facesMessage) {
  83                         throw new ValidatorException(facesMessage);
  84                 }
  85
  86                 // Trace message
  87                 //this.getLogger().logTrace("preValidate: EXIT!"); //NOI18N
  88         }
  89 }