Mercurial > lada > lada-server

annotate src/main/java/de/intevation/lada/data/LZusatzwertRepository.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 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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16 import de.intevation.lada.manage.Manager;
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17 import de.intevation.lada.model.LZusatzWert;
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18 import de.intevation.lada.model.LZusatzWertId;
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19 import de.intevation.lada.rest.Response;
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20
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21 /**
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22 * This Container is an interface to read, write and update LZusatzWert
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23 * objects from the connected database.
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24 *
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25 * @author <a href="mailto:rrenkert@intevation.de">Raimund Renkert</a>
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26 */
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27 @ApplicationScoped
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28 @Named("lzusatzwertrepository")
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29 public class LZusatzwertRepository implements Repository
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30 {
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31 /**
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32 * The entitymanager managing the data.
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33 */
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34 @Inject
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35 private EntityManager em;
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36
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37 /**
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38 * The data manager providing database operations.
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39 */
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40 @Inject
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41 @Named("datamanager")
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42 private Manager manager;
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43
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44 public EntityManager getEntityManager() {
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45 return this.em;
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46 }
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47
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48 /**
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49 * Filter object list by the given criteria.
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50 *
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51 * @param filter The query filter.
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52 * @return Response object.
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53 */
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54 public <T> Response filter(CriteriaQuery<T> filter) {
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55 List<T> result = em.createQuery(filter).getResultList();
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56 return new Response(true, 200, result);
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57 }
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58
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59
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60 /**
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61 * Get all objects of type <link>clazz</link>from database.
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62 *
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63 * @param clazz The object type.
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64 * @return Response object.
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65 */
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66 public <T> Response findAll(Class<T> clazz) {
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67 CriteriaBuilder builder = em.getCriteriaBuilder();
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68 CriteriaQuery<T> criteria = builder.createQuery(clazz);
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69 Root<T> member = criteria.from(clazz);
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70 criteria.select(member);
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71 List<T> result = em.createQuery(criteria).getResultList();
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72 return new Response(true, 200, result);
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73 }
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74
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75 /**
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76 * Find a single object identified by its id.
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77 *
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78 * @param clazz The object type.
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79 * @param id The object id.
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80 * @return Response object.
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81 */
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82 public <T> Response findById(Class<T> clazz, String id) {
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83 T item = em.find(clazz, id);
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84 if (item == null) {
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85 return new Response(false, 600, null);
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86 }
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87 return new Response(true, 200, item);
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88 }
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89
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90 /**
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91 * Create a new LZusatzwert object.
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92 *
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93 * @param object The new object.
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94 * @return Response object.
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95 */
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96 public Response create(Object object) {
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97 if (!(object instanceof LZusatzWert)) {
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98 return new Response(false, 602, object);
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99 }
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100 LZusatzWert zusatzwert = (LZusatzWert)object;
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101 LZusatzWertId id =
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102 new LZusatzWertId(
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103 zusatzwert.getProbeId(),
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104 zusatzwert.getPzsId());
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105 zusatzwert.setId(id);
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106 Response response = new Response(true, 200, zusatzwert);
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107 // Try to save the new LProbe.
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108 try {
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109 manager.create(zusatzwert);
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110 return response;
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111 }
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112 catch (EntityExistsException eee) {
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113 response.setSuccess(false);
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114 response.setMessage(601);
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115 }
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116 catch (IllegalArgumentException iae) {
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117 response.setSuccess(false);
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118 response.setMessage(602);
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119 }
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120 catch (TransactionRequiredException tre) {
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121 response.setSuccess(false);
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122 response.setMessage(603);
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123 }
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124 catch (EJBTransactionRolledbackException te) {
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125 response.setSuccess(false);
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126 response.setMessage(604);
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127 }
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128 return response;
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129 }
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130
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131 /**
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132 * Update a LZusatzwert object.
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133 *
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134 * @param object The object to update.
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135 * @return Response object.
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136 */
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137 public Response update(Object object) {
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138 if (!(object instanceof LZusatzWert)) {
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139 return new Response(false, 602, object);
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140 }
174
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141 LZusatzWert zusatzwert = (LZusatzWert)object;
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142 LZusatzWertId id = new LZusatzWertId(
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143 zusatzwert.getProbeId(),
175
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144 zusatzwert.getPzsId());
174
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145 zusatzwert.setId(id);
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146 Response response = new Response(true, 200, zusatzwert);
151
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147 try {
174
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148 manager.update(zusatzwert);
151
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149 return response;
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150 }
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151 catch (EntityExistsException eee) {
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152 response.setSuccess(false);
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153 response.setMessage(601);
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154 }
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155 catch (IllegalArgumentException iae) {
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156 response.setSuccess(false);
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157 response.setMessage(602);
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158 }
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159 catch (TransactionRequiredException tre) {
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160 response.setSuccess(false);
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161 response.setMessage(603);
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162 }
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163 catch (EJBTransactionRolledbackException te) {
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164 response.setSuccess(false);
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165 response.setMessage(604);
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166 }
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167 return response;
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168 }
191
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169
220
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170 /**
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171 * Delete a LZusatzwert object.
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172 *
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173 * @param object The object to delete.
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174 * @return Response object.
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175 */
191
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176 public Response delete(Object object) {
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177 if (!(object instanceof LZusatzWert)) {
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178 return new Response(false, 602, null);
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179 }
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180 LZusatzWert zusatzwert = (LZusatzWert)object;
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181 Response response = new Response(true, 200, null);
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182 try {
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183 manager.delete(zusatzwert);
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184 }
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185 catch (IllegalArgumentException iae) {
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186 response.setSuccess(false);
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187 response.setMessage(602);
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188 }
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189 catch (TransactionRequiredException tre) {
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190 response.setSuccess(false);
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191 response.setMessage(603);
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192 }
193
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193 return response;
191
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194 }
151
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195 }
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