src/org/mxchange/addressbook/validator/addressbook/AddressbookIdValidator.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.addressbook.validator.addressbook;
  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.faces.view.facelets.FaceletException;
  26 import javax.naming.Context;
  27 import javax.naming.InitialContext;
  28 import javax.naming.NamingException;
  29 import org.mxchange.addressbook.model.addressbook.AddressbookSessionBeanRemote;
  30 import org.mxchange.jcoreee.validator.number.BaseLongValidator;
  31
  32 /**
  33  * A validator for address book id verification
  34  * <p>
  35  * @author Roland Haeder
  36  */
  37 @FacesValidator (value = "AddressbookIdValidator")
  38 public class AddressbookIdValidator extends BaseLongValidator {
  39
  40         /**
  41          * Serial number
  42          */
  43         private static final long serialVersionUID = 158_768_467_186_951_809L;
  44
  45         /**
  46          * Remote bean
  47          */
  48         private AddressbookSessionBeanRemote addressbookBean;
  49
  50         /**
  51          * Default constructor
  52          */
  53         public AddressbookIdValidator () {
  54                 // Try it
  55                 try {
  56                         // Get context
  57                         Context context = new InitialContext();
  58
  59                         // Try to to lookup the bean
  60                         this.addressbookBean = (AddressbookSessionBeanRemote) context.lookup("ejb/stateless-addressbook");
  61                 } catch (final NamingException ex) {
  62                         // Throw again
  63                         throw new FaceletException(ex);
  64                 }
  65         }
  66
  67         @Override
  68         public void validate (final FacesContext context, final UIComponent component, final Object value) throws ValidatorException {
  69                 // Trace message
  70                 //this.getLogger().logTrace(MessageFormat.format("validate: context={0},component={1},value={2} - CALLED!", context, component, value)); //NOI18N
  71
  72                 // All accepted, required fields
  73                 String[] requiredFileds = {"addressbookId"}; //NOI18N
  74
  75                 // Pre-validation (example: not null, not a string, empty string ...)
  76                 super.preValidate(context, component, value, requiredFileds, false);
  77
  78                 // Is the address book id valid?
  79                 if (!this.addressbookBean.isAddressbookIdUsed((Long) value)) {
  80                         // Is not valid
  81                         throw new ValidatorException(new FacesMessage(MessageFormat.format("No address book found with id {0}. Please check your link.", value)));
  82                 }
  83
  84                 // Trace message
  85                 //this.getLogger().logTrace("validate: EXIT!"); //NOI18N
  86         }
  87 }