src/java/org/mxchange/jcontactsbusiness/model/department/FinancialsDepartmentSessionBean.java

   1 /*
   2  * Copyright (C) 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.jcontactsbusiness.model.department;
  18
  19 import java.text.MessageFormat;
  20 import java.util.List;
  21 import javax.ejb.Stateless;
  22 import javax.persistence.NoResultException;
  23 import javax.persistence.Query;
  24 import org.mxchange.jcontactsbusiness.exceptions.department.DepartmentNotFoundException;
  25 import org.mxchange.jfinancials.database.BaseFinancialsDatabaseBean;
  26
  27 /**
  28  * A stateless session bean for general department purposes
  29  * <p>
  30  * @author Roland Häder<roland@mxchange.org>
  31  */
  32 @Stateless (name = "department", description = "A general statless bean for handling branch office data (all)")
  33 public class FinancialsDepartmentSessionBean extends BaseFinancialsDatabaseBean implements DepartmentSessionBeanRemote {
  34
  35         /**
  36          * Serial number
  37          */
  38         private static final long serialVersionUID = 58_467_386_571_701L;
  39
  40         @Override
  41         @SuppressWarnings ("unchecked")
  42         public List<Department> allDepartments () {
  43                 // Trace message
  44                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.allDepartments: CALLED!", this.getClass().getSimpleName())); //NOI18N
  45
  46                 // Get query
  47                 final Query query = this.getEntityManager().createNamedQuery("AllDepartments"); //NOI18N
  48
  49                 // Get list from it
  50                 final List<Department> list = query.getResultList();
  51
  52                 // Trace message
  53                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.allDepartments: list.size()={1} - EXIT!", this.getClass().getSimpleName(), list.size())); //NOI18N
  54
  55                 // Return it
  56                 return list;
  57         }
  58
  59         @Override
  60         public Department findDepartmentById (final Long departmentId) throws DepartmentNotFoundException {
  61                 // Trace message
  62                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.findDepartmentById: CALLED!", this.getClass().getSimpleName())); //NOI18N
  63
  64                 // Validate parameter
  65                 if (null == departmentId) {
  66                         // Throw NPE
  67                         throw new NullPointerException("departmentId is null"); //NOI18N
  68                 } else if (departmentId < 1) {
  69                         // Throw NPE
  70                         throw new NullPointerException(MessageFormat.format("departmentId={0}is invalid", departmentId)); //NOI18N
  71                 }
  72
  73                 // Get query
  74                 final Query query = this.getEntityManager().createNamedQuery("SearchDepartmentById", CompanyDepartment.class); //NOI18N
  75
  76                 // Set parameter
  77                 query.setParameter("departmentId", departmentId); //NOI18N
  78
  79                 // Get single instance
  80                 final Department department;
  81
  82                 // Try to find a result
  83                 try {
  84                         // Find a single result
  85                         department = (Department) query.getSingleResult();
  86
  87                         // Log trace message
  88                         this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.findDepartmentById: Found department={1}", this.getClass().getSimpleName(), department)); //NOI18N
  89                 } catch (final NoResultException ex) {
  90                         // No result found
  91                         throw new DepartmentNotFoundException(departmentId, ex);
  92                 }
  93
  94                 // Trace message
  95                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.findDepartmentById: department={1} - EXIT!", this.getClass().getSimpleName(), department)); //NOI18N
  96
  97                 // Return it
  98                 return department;
  99         }
 100
 101 }