Mercurial > lada > lada-server

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

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Code documentation.
author Raimund Renkert <rrenkert@intevation.de>
date Tue, 10 Sep 2013 15:55:54 +0200
parents 0de24f5e7c01
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 import java.util.Map;
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5
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6 import javax.ejb.EJBTransactionRolledbackException;
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7 import javax.enterprise.context.ApplicationScoped;
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8 import javax.inject.Inject;
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9 import javax.inject.Named;
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10 import javax.persistence.EntityExistsException;
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11 import javax.persistence.EntityManager;
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12 import javax.persistence.TransactionRequiredException;
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13 import javax.persistence.criteria.CriteriaBuilder;
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14 import javax.persistence.criteria.CriteriaQuery;
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15 import javax.persistence.criteria.Root;
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17 import de.intevation.lada.manage.Manager;
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18 import de.intevation.lada.model.LMessung;
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19 import de.intevation.lada.rest.Response;
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20 import de.intevation.lada.validation.ValidationException;
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21 import de.intevation.lada.validation.Validator;
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22
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23 /**
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24 * This Container is an interface to read, write and update LMessung obejcts.
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25 *
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26 * @author <a href="mailto:rrenkert@intevation.de">Raimund Renkert</a>
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27 */
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28 @ApplicationScoped
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29 @Named("lmessungrepository")
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30 public class LMessungRepository implements Repository
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31 {
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32 /**
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33 * The entitymanager managing the data.
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34 */
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35 @Inject
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36 private EntityManager em;
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37
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38 /**
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39 * The data manager providing database operations.
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40 */
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41 @Inject
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42 @Named("datamanager")
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43 private Manager manager;
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44
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45 /**
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46 * The validator used for LMessung objects.
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47 */
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48 @Inject
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49 @Named("lmessungvalidator")
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50 private Validator validator;
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51
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52 @Override
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53 public EntityManager getEntityManager() {
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54 return this.em;
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55 }
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56 /**
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57 * Filter object list by the given criteria.
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58 *
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59 * @param filter The query filter.
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60 * @return Response opbject.
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61 */
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62 public <T> Response filter(CriteriaQuery<T> filter) {
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63 List<T> result = em.createQuery(filter).getResultList();
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64 return new Response(true, 200, result);
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65 }
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67
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68 /**
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69 * Get all objects of type <link>clazz</link>from database.
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70 *
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71 * @param clazz The object type.
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72 * @return Response object.
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73 */
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74 public <T> Response findAll(Class<T> clazz) {
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75 CriteriaBuilder builder = em.getCriteriaBuilder();
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76 CriteriaQuery<T> criteria = builder.createQuery(clazz);
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77 Root<T> member = criteria.from(clazz);
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78 criteria.select(member);
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79 List<T> result = em.createQuery(criteria).getResultList();
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80 return new Response(true, 200, result);
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81 }
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82
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83 /**
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84 * Find a single object identified by its id.
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85 *
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86 * @param clazz The object type.
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87 * @param id The object id.
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88 * @return Response object.
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89 */
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90 public <T> Response findById(Class<T> clazz, String id) {
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91 T item = em.find(clazz, id);
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92 if (item == null) {
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93 return new Response(false, 600, null);
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94 }
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95 return new Response(true, 200, item);
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96 }
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97
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98 /**
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99 * Validate and persist a new LMessung object.
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100 *
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101 * @param object The new object
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102 * @return Response object.
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103 */
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104 public Response create(Object object) {
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105 if (!(object instanceof LMessung)) {
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106 return new Response(false, 602, object);
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107 }
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108 LMessung messung = (LMessung)object;
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109 Response response = new Response(true, 200, messung);
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110 try {
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111 Map<String, Integer> warnings = validator.validate(messung, false);
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112 manager.create(messung);
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113 response.setWarnings(warnings);
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114 return response;
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115 }
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116 catch (EntityExistsException eee) {
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117 response.setSuccess(false);
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118 response.setMessage(601);
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119 }
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120 catch (IllegalArgumentException iae) {
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121 response.setSuccess(false);
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122 response.setMessage(602);
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123 }
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124 catch (TransactionRequiredException tre) {
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125 response.setSuccess(false);
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126 response.setMessage(603);
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127 }
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128 catch (ValidationException ve) {
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129 response.setSuccess(false);
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130 response.setMessage(604);
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131 response.setErrors(ve.getErrors());
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132 response.setWarnings(ve.getWarnings());
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133 }
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134 catch (EJBTransactionRolledbackException te) {
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135 response.setSuccess(false);
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136 response.setMessage(604);
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137 }
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138 return response;
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139 }
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140
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141 /**
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142 * Update a LMessung object.
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143 *
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144 * @param object The object to update
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145 * @return Response object.
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146 */
131
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147 public Response update(Object object) {
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148 if (!(object instanceof LMessung)) {
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149 return new Response(false, 602, object);
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150 }
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151 LMessung messung = (LMessung)object;
128
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152 Response response = new Response(true, 200, messung);
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153 // Try to save the new LProbe.
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154 try {
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155 Map<String, Integer> warnings = validator.validate(messung, true);
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156 manager.update(messung);
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157 response.setWarnings(warnings);
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158 return response;
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159 }
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160 catch (EntityExistsException eee) {
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161 response.setSuccess(false);
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162 response.setMessage(601);
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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 catch (ValidationException ve) {
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173 response.setSuccess(false);
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174 response.setMessage(604);
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175 response.setErrors(ve.getErrors());
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176 response.setWarnings(ve.getWarnings());
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177 }
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178 catch (EJBTransactionRolledbackException te) {
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179 response.setSuccess(false);
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180 response.setMessage(604);
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181 }
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182 return response;
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183 }
191
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184
220
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185 /**
255
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186 * Delete a LMessung object.
220
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187 *
255
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188 * @param object The object to delete.
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189 * @return Response object.
220
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190 */
191
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191 public Response delete(Object object) {
255
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192 if (!(object instanceof LMessung)) {
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193 return new Response(false, 602, null);
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194 }
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195 LMessung messung = (LMessung)object;
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196 Response response = new Response(true, 200, null);
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197 try {
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198 manager.delete(messung);
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199 }
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200 catch (IllegalArgumentException iae) {
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201 response.setSuccess(false);
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202 response.setMessage(602);
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203 }
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204 catch (TransactionRequiredException tre) {
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205 response.setSuccess(false);
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206 response.setMessage(603);
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207 }
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208 return response;
191
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209 }
128
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210 }
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