src/java/org/mxchange/addressbook/beans/features/AddressbookFeatureWebApplicationBean.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 Affero General Public License as
   6  * published by the Free Software Foundation, either version 3 of the
   7  * License, or (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 Affero General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Affero General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.mxchange.addressbook.beans.features;
  18
  19 import javax.annotation.PostConstruct;
  20 import javax.enterprise.context.ApplicationScoped;
  21 import javax.inject.Named;
  22 import org.mxchange.addressbook.beans.BaseAddressbookController;
  23
  24 /**
  25  * A feature bean
  26  * <p>
  27  * @author Roland Häder<roland@mxchange.org>
  28  */
  29 @Named ("featureController")
  30 @ApplicationScoped
  31 public class AddressbookFeatureWebApplicationBean extends BaseAddressbookController implements AddressbookFeaturesWebApplicationController {
  32
  33         /**
  34          * Serial number
  35          */
  36         private static final long serialVersionUID = 64_237_512_690_168_674L;
  37
  38         /**
  39          * Default constructor
  40          */
  41         public AddressbookFeatureWebApplicationBean () {
  42                 // Call super constructor
  43                 super();
  44         }
  45
  46         /**
  47          * Post-construction method
  48          */
  49         @PostConstruct
  50         public void init () {
  51         }
  52
  53         @Override
  54         public boolean isFeatureEnabled (final String feature) {
  55                 // The parameter must be set
  56                 if (null == feature) {
  57                         // Throw NPE
  58                         throw new NullPointerException("feature is null"); //NOI18N
  59                 } else if (feature.isEmpty()) {
  60                         // Is empty
  61                         throw new IllegalArgumentException("feature is empty"); //NOI18N
  62                 }
  63
  64                 // Default is not enabled
  65                 boolean isEnabled = false;
  66
  67                 // Try it as an NPE may come
  68                 try {
  69                         // Get value from property
  70                         String value = this.getStringContextParameter(String.format("is_feature_%s_enabled", feature)); //NOI18N
  71
  72                         // Is it set?
  73                         isEnabled = (value.toLowerCase().equals("true")); //NOI18N
  74                 } catch (final NullPointerException ex) {
  75                         // Ignored
  76                 }
  77
  78                 // Return value
  79                 return isEnabled;
  80         }
  81
  82 }