src/java/org/mxchange/jjobs/converter/business/company_employee/JobsCompanyEmployeeConverter.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.jjobs.converter.business.company_employee;
  18
  19 import java.text.MessageFormat;
  20 import javax.faces.component.UIComponent;
  21 import javax.faces.context.FacesContext;
  22 import javax.faces.convert.Converter;
  23 import javax.faces.convert.ConverterException;
  24 import javax.faces.convert.FacesConverter;
  25 import javax.naming.Context;
  26 import javax.naming.InitialContext;
  27 import javax.naming.NamingException;
  28 import org.mxchange.jcontactsbusiness.employee.CompanyEmployeeSessionBeanRemote;
  29 import org.mxchange.jcontactsbusiness.employee.Employee;
  30 import org.mxchange.jcontactsbusiness.exceptions.employee.CompanyEmployeeNotFoundException;
  31
  32 /**
  33  * Converter for converting company employee to and from id number
  34  * <p>
  35  * @author Roland Häder<roland@mxchange.org>
  36  */
  37 @FacesConverter (value = "CompanyEmployeeConverter")
  38 public class JobsCompanyEmployeeConverter implements Converter {
  39
  40         /**
  41          * CompanyEmployee EJB
  42          */
  43         private static CompanyEmployeeSessionBeanRemote COMPANY_EMPLOYEE_BEAN;
  44
  45         /**
  46          * Default constructor
  47          */
  48         public JobsCompanyEmployeeConverter () {
  49         }
  50
  51         @Override
  52         public Object getAsObject (final FacesContext context, final UIComponent component, final String submittedValue) {
  53                 // Is the value null or empty?
  54                 if ((null == submittedValue) || (submittedValue.trim().isEmpty())) {
  55                         // Warning message
  56                         // @TODO Not working with JNDI (no remote interface) this.loggerBeanLocal.logWarning(MessageFormat.format("{0}.getAsObject(): submittedValue is null or empty - EXIT!", this.getClass().getSimpleName())); //NOI18N
  57
  58                         // Return null
  59                         return null;
  60                 }
  61
  62                 // Is the bean there?
  63                 // @TODO Requires this synchronization or is it (sync) confusing the container?
  64                 if (null == JobsCompanyEmployeeConverter.COMPANY_EMPLOYEE_BEAN) {
  65                         // Try to get it
  66                         try {
  67                                 // Get initial context
  68                                 Context initialContext = new InitialContext();
  69
  70                                 // ... and user controller
  71                                 JobsCompanyEmployeeConverter.COMPANY_EMPLOYEE_BEAN = (CompanyEmployeeSessionBeanRemote) initialContext.lookup("java:global/jjobs-ejb/companyEmployee!org.mxchange.jcontactsbusiness.company_employee.CompanyEmployeeSessionBeanRemote"); //NOI18N
  72                         } catch (final NamingException ex) {
  73                                 // Continue to throw it
  74                                 throw new ConverterException(MessageFormat.format("initialContext.lookup() failed: {0}", ex.getMessage()), ex); //NOI18N
  75                         }
  76                 }
  77
  78                 // Init instance
  79                 Employee companyEmployee = null;
  80
  81                 try {
  82                         // Try to parse the value as long
  83                         Long employeeId = Long.valueOf(submittedValue);
  84
  85                         // Try to get user instance from it
  86                         companyEmployee = JobsCompanyEmployeeConverter.COMPANY_EMPLOYEE_BEAN.findCompanyEmployeeById(employeeId);
  87                 } catch (final NumberFormatException ex) {
  88                         // Throw again
  89                         throw new ConverterException(ex);
  90                 } catch (final CompanyEmployeeNotFoundException ex) {
  91                         // Debug message
  92                         // @TODO Not working with JNDI (no remote interface) this.loggerBeanLocal.logDebug(MessageFormat.format("{0}.getAsObject(): Exception: {1} - Returning null ...", this.getClass().getSimpleName(), ex)); //NOI18N
  93                 }
  94
  95                 // Return it
  96                 return companyEmployee;
  97         }
  98
  99         @Override
 100         public String getAsString (final FacesContext context, final UIComponent component, final Object value) {
 101                 // Is the object null?
 102                 if ((null == value) || (String.valueOf(value).isEmpty())) {
 103                         // Is null
 104                         return ""; //NOI18N
 105                 } else if (!(value instanceof Employee)) {
 106                         // Not same interface
 107                         throw new IllegalArgumentException(MessageFormat.format("value[]={0} does not implement Employee.", value.getClass().getSimpleName())); //NOI18N
 108                 }
 109
 110                 // Return id number
 111                 return String.valueOf(((Employee) value).getEmployeeId());
 112         }
 113
 114 }