annotate src/main/java/de/intevation/lada/data/OrtRepository.java @ 366:567ce7697fc7 0.5

Code documentation.
author Raimund Renkert <rrenkert@intevation.de>
date Tue, 10 Sep 2013 15:55:54 +0200
parents f0482fa04e2b
children ea4d2d685f32
rev   line source
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1 package de.intevation.lada.data;
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2
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3 import java.util.List;
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4
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5 import javax.ejb.EJBTransactionRolledbackException;
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6 import javax.enterprise.context.ApplicationScoped;
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7 import javax.inject.Inject;
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8 import javax.inject.Named;
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9 import javax.persistence.EntityExistsException;
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10 import javax.persistence.EntityManager;
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11 import javax.persistence.TransactionRequiredException;
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12 import javax.persistence.criteria.CriteriaBuilder;
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13 import javax.persistence.criteria.CriteriaQuery;
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14 import javax.persistence.criteria.Root;
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15
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16 import de.intevation.lada.manage.Manager;
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17 import de.intevation.lada.model.Ort;
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18 import de.intevation.lada.rest.Response;
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19
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20 /**
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21 * Repository that allows read, write and update operations on 'Ort' objects.
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22 *
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23 * @author <a href="mailto:rrenkert@intevation.de">Raimund Renkert</a>
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24 */
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25 @ApplicationScoped
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26 @Named("ortrepository")
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27 public class OrtRepository implements Repository
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28 {
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29 /**
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30 * The entitymanager managing the data.
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31 */
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32 @Inject
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33 private EntityManager em;
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34
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35 /**
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36 * THe data manager providing database operations.
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37 */
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38 @Inject
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39 @Named("datamanager")
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40 private Manager manager;
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41
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42 public EntityManager getEntityManager() {
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43 return this.em;
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44 }
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45
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46 /**
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47 * Filter object list by the given criteria.
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48 *
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49 * @param filter The query filter.
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50 * @return Response object.
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51 */
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52 public <T> Response filter(CriteriaQuery<T> filter) {
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53 List<T> result = em.createQuery(filter).getResultList();
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54 return new Response(true, 200, result);
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55 }
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56
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57
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58 /**
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59 * Get all objects of type <link>clazz</link>from database.
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60 *
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61 * @param clazz The object type.
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62 * @return Response object
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63 */
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64 public <T> Response findAll(Class<T> clazz) {
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65 CriteriaBuilder builder = em.getCriteriaBuilder();
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66 CriteriaQuery<T> criteria = builder.createQuery(clazz);
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67 Root<T> member = criteria.from(clazz);
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68 criteria.select(member);
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69 List<T> result = em.createQuery(criteria).getResultList();
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70 return new Response(true, 200, result);
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71 }
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72
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73 /**
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74 * Find a single object identified by its id.
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75 *
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76 * @param clazz The object type.
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77 * @param id The object id.
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78 * @return Response object.
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79 */
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80 public <T> Response findById(Class<T> clazz, String id) {
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81 T item = em.find(clazz, id);
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82 if (item == null) {
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83 return new Response(false, 600, null);
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84 }
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85 return new Response(true, 200, item);
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86 }
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87
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88 /**
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89 * Create a new 'Ort' object.
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90 *
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91 * @param object The new object.
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92 * @return Response object.
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93 */
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94 public Response create(Object object) {
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95 if (!(object instanceof Ort)) {
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96 return new Response(false, 602, object);
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97 }
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98 Ort ort = (Ort)object;
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99 try {
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100 manager.create(ort);
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101 return new Response(true, 200, ort);
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102 }
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103 catch(EntityExistsException eee) {
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104 return new Response(false, 601, ort);
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105 }
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106 catch(IllegalArgumentException iae) {
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107 return new Response(false, 602, ort);
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108 }
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109 catch(TransactionRequiredException tre) {
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110 return new Response(false, 603, ort);
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111 }
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112 }
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113
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114 /**
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115 * Update a 'Ort' object.
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116 *
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117 * @param object The object to update.
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118 * @return Response object.
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119 */
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120 public Response update(Object object) {
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121 if (!(object instanceof Ort)) {
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122 return new Response(false, 602, object);
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123 }
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124 Ort ort = (Ort)object;
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125 Response response = new Response(true, 200, ort);
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126 try {
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127 manager.update(ort);
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128 return response;
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129 }
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130 catch (EntityExistsException eee) {
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131 response.setSuccess(false);
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132 response.setMessage(601);
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133 }
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134 catch (IllegalArgumentException iae) {
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135 response.setSuccess(false);
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136 response.setMessage(602);
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137 }
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138 catch (TransactionRequiredException tre) {
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139 response.setSuccess(false);
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140 response.setMessage(603);
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141 }
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142 catch (EJBTransactionRolledbackException te) {
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143 response.setSuccess(false);
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144 response.setMessage(604);
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145 }
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146 return response;
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147 }
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148
220
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149 /**
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150 * Delete a 'Ort' object.
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151 *
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152 * @param object The object to delete.
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153 * @return Response object.
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154 */
195
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155 public Response delete(Object object) {
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156 if (!(object instanceof Ort)) {
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157 return new Response(false, 602, null);
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158 }
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159 Ort ort = (Ort)object;
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160 Response response = new Response(true, 200, null);
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161 try {
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162 manager.delete(ort);
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163 }
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164 catch (IllegalArgumentException iae) {
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165 response.setSuccess(false);
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166 response.setMessage(602);
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167 }
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168 catch (TransactionRequiredException tre) {
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169 response.setSuccess(false);
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170 response.setMessage(603);
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171 }
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172 return response;
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173 }
213
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174 }
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