Mercurial > lada > lada-server
annotate src/main/java/de/intevation/lada/data/LKommentarMRepository.java @ 366:567ce7697fc7 0.5
Code documentation.
author | Raimund Renkert <rrenkert@intevation.de> |
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date | Tue, 10 Sep 2013 15:55:54 +0200 |
parents | f0482fa04e2b |
children | ea4d2d685f32 |
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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.LKommentarM; |
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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 * This Container is an interface to read, write and update LKommentarM 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("lkommentarmrepository") |
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27 public class LKommentarMRepository 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 * Filter object list by the given criteria. |
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47 * |
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48 * @param filter The query filter. |
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49 * @return Response object. |
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50 */ |
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51 public <T> Response filter(CriteriaQuery<T> filter) { |
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52 List<T> result = em.createQuery(filter).getResultList(); |
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53 return new Response(true, 200, result); |
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54 } |
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55 |
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56 |
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57 /** |
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58 * Get all objects of type <link>clazz</link>from database. |
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59 * |
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60 * @param clazz The object type. |
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61 * @return Response object. |
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62 */ |
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63 public <T> Response findAll(Class<T> clazz) { |
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64 CriteriaBuilder builder = em.getCriteriaBuilder(); |
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65 CriteriaQuery<T> criteria = builder.createQuery(clazz); |
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66 Root<T> member = criteria.from(clazz); |
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67 criteria.select(member); |
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68 List<T> result = em.createQuery(criteria).getResultList(); |
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69 return new Response(true, 200, result); |
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70 } |
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71 |
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72 /** |
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73 * Find a single object identified by its id. |
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74 * |
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75 * @param clazz The object type. |
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76 * @param id The object id. |
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77 * @return Response object. |
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78 */ |
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79 public <T> Response findById(Class<T> clazz, String id) { |
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80 T item = em.find(clazz, id); |
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81 if (item == null) { |
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82 return new Response(false, 600, null); |
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83 } |
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84 return new Response(true, 200, item); |
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85 } |
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86 |
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87 /** |
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88 * Create a new LKommentarM object. |
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89 * |
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90 * @param object The new object. |
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91 * @return Response object. |
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92 */ |
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93 public Response create(Object object) { |
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94 if (!(object instanceof LKommentarM)) { |
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95 return new Response(false, 602, object); |
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96 } |
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97 LKommentarM kommentar = (LKommentarM)object; |
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98 Response response = new Response(true, 200, kommentar); |
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99 try { |
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100 manager.create(kommentar); |
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101 return response; |
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102 } |
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103 catch (EntityExistsException eee) { |
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104 response.setSuccess(false); |
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105 response.setMessage(601); |
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106 } |
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107 catch (IllegalArgumentException iae) { |
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108 response.setSuccess(false); |
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109 response.setMessage(602); |
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110 } |
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111 catch (TransactionRequiredException tre) { |
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112 response.setSuccess(false); |
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113 response.setMessage(603); |
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114 } |
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115 catch (EJBTransactionRolledbackException te) { |
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116 response.setSuccess(false); |
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117 response.setMessage(604); |
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118 } |
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119 return response; |
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120 } |
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121 |
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122 /** |
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123 * Update a LKommentarM object. |
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124 * |
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125 * @param object The object to update. |
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126 * @return Response object. |
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127 */ |
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128 public Response update(Object object) { |
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129 if (!(object instanceof LKommentarM)) { |
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130 return new Response(false, 602, object); |
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131 } |
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132 LKommentarM kommentar = (LKommentarM)object; |
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133 Response response = new Response(true, 200, kommentar); |
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134 try { |
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135 manager.update(kommentar); |
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136 return response; |
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137 } |
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138 catch (EntityExistsException eee) { |
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139 response.setSuccess(false); |
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140 response.setMessage(601); |
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141 } |
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142 catch (IllegalArgumentException iae) { |
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143 response.setSuccess(false); |
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144 response.setMessage(602); |
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145 } |
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146 catch (TransactionRequiredException tre) { |
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147 response.setSuccess(false); |
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148 response.setMessage(603); |
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149 } |
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150 catch (EJBTransactionRolledbackException te) { |
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151 response.setSuccess(false); |
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152 response.setMessage(604); |
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153 } |
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154 return response; |
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155 } |
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156 |
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157 /** |
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158 * Delete a LKommentarM object. |
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159 * |
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160 * @param object The object to delete |
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161 * @return Response object. |
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162 */ |
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163 public Response delete(Object object) { |
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164 if (!(object instanceof LKommentarM)) { |
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165 return new Response(false, 602, null); |
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166 } |
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167 LKommentarM kommentar = (LKommentarM)object; |
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168 Response response = new Response(true, 200, null); |
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169 try { |
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170 manager.delete(kommentar); |
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171 } |
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172 catch (IllegalArgumentException iae) { |
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173 response.setSuccess(false); |
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174 response.setMessage(602); |
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175 } |
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176 catch (TransactionRequiredException tre) { |
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177 response.setSuccess(false); |
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178 response.setMessage(603); |
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179 } |
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180 return response; |
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181 } |
160
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182 } |