1 | package gov.hhs.fha.nhinc.repository.dao;
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2 |
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3 | import gov.hhs.fha.nhinc.repository.model.Document;
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4 | import gov.hhs.fha.nhinc.repository.model.EventCode;
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5 | import gov.hhs.fha.nhinc.repository.persistence.HibernateUtil;
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6 | import java.util.List;
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7 | import org.apache.commons.logging.Log;
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8 | import org.apache.commons.logging.LogFactory;
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9 | import org.hibernate.Criteria;
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10 | import org.hibernate.Session;
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11 | import org.hibernate.SessionFactory;
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12 | import org.hibernate.Transaction;
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13 | import org.hibernate.criterion.Restrictions;
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14 |
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15 | /**
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16 | * Data access object class for EventCode data
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17 | *
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18 | * @author Neil Webb
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19 | */
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20 | public class EventCodeDao
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21 | {
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22 | Log log = LogFactory.getLog(EventCodeDao.class);
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23 |
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24 | /**
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25 | * Save an event code record to the database.
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26 | * Insert if event code id is null. Update otherwise.
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27 | *
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28 | * @param eventCode EventCode record to save.
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29 | */
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30 | public void save(EventCode eventCode)
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31 | {
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32 | SessionFactory fact = null;
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33 | Session sess = null;
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34 | Transaction trans = null;
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35 | try
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36 | {
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37 | fact = HibernateUtil.getSessionFactory();
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38 | if (fact != null)
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39 | {
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40 | sess = fact.openSession();
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41 | if (sess != null)
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42 | {
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43 | trans = sess.beginTransaction();
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44 | sess.saveOrUpdate(eventCode);
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45 | }
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46 | else
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47 | {
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48 | log.error("Failed to obtain a session from the sessionFactory");
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49 | }
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50 | }
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51 | else
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52 | {
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53 | log.error("Session factory was null");
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54 | }
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55 | }
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56 | finally
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57 | {
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58 | if (trans != null)
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59 | {
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60 | try
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61 | {
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62 | trans.commit();
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63 | }
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64 | catch (Throwable t)
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65 | {
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66 | log.error("Failed to commit transaction: " + t.getMessage(), t);
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67 | }
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68 | }
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69 | if (sess != null)
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70 | {
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71 | try
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72 | {
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73 | sess.close();
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74 | }
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75 | catch (Throwable t)
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76 | {
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77 | log.error("Failed to close session: " + t.getMessage(), t);
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78 | }
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79 | }
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80 | }
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81 | }
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82 |
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83 | /**
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84 | * Delete an event code record.
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85 | *
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86 | * @param eventCode EventCode record to delete.
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87 | */
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88 | public void delete(EventCode eventCode)
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89 | {
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90 | Session sess = null;
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91 | Transaction trans = null;
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92 | try
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93 | {
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94 | SessionFactory fact = HibernateUtil.getSessionFactory();
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95 | if (fact != null)
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96 | {
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97 | sess = fact.openSession();
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98 | if (sess != null)
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99 | {
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100 | trans = sess.beginTransaction();
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101 | sess.delete(eventCode);
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102 |
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103 | }
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104 | else
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105 | {
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106 | log.error("Failed to obtain a session from the sessionFactory");
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107 | }
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108 | }
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109 | else
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110 | {
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111 | log.error("Session factory was null");
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112 | }
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113 | }
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114 | finally
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115 | {
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116 | if (trans != null)
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117 | {
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118 | try
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119 | {
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120 | trans.commit();
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121 | }
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122 | catch (Throwable t)
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123 | {
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124 | log.error("Failed to commit transaction: " + t.getMessage(), t);
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125 | }
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126 | }
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127 | if (sess != null)
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128 | {
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129 | try
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130 | {
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131 | sess.close();
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132 | }
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133 | catch (Throwable t)
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134 | {
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135 | log.error("Failed to close session: " + t.getMessage(), t);
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136 | }
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137 | }
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138 | }
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139 | }
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140 |
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141 | /**
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142 | * Retrieve an event code record by identifier.
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143 | *
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144 | * @param eventCodeId EventCode record identifier.
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145 | * @return EventCode record retrieved from the database.
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146 | */
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147 | public EventCode findById(Long eventCodeId)
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148 | {
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149 | EventCode eventCode = null;
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150 |
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151 | Session sess = null;
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152 | try
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153 | {
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154 | SessionFactory fact = HibernateUtil.getSessionFactory();
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155 | if (fact != null)
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156 | {
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157 | sess = fact.openSession();
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158 | if (sess != null)
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159 | {
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160 | eventCode = (EventCode) sess.get(EventCode.class, eventCodeId);
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161 | }
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162 | else
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163 | {
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164 | log.error("Failed to obtain a session from the sessionFactory");
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165 | }
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166 | }
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167 | else
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168 | {
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169 | log.error("Session factory was null");
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170 | }
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171 | }
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172 | finally
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173 | {
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174 | if (sess != null)
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175 | {
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176 | try
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177 | {
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178 | sess.close();
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179 | }
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180 | catch (Throwable t)
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181 | {
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182 | log.error("Failed to close session: " + t.getMessage(), t);
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183 | }
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184 | }
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185 | }
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186 | return eventCode;
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187 | }
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188 |
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189 | /**
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190 | * Retrieves all event codes for a given document
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191 | *
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192 | * @param document Reference document object
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193 | * @return EventCode list
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194 | */
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195 | @SuppressWarnings("unchecked")
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196 | public List<EventCode> findForDocument(Document document)
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197 | {
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198 | List<EventCode> eventCodes = null;
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199 |
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200 | Session sess = null;
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201 | try
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202 | {
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203 | SessionFactory fact = HibernateUtil.getSessionFactory();
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204 | if (fact != null)
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205 | {
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206 | sess = fact.openSession();
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207 | if (sess != null)
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208 | {
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209 | Criteria criteria = sess.createCriteria(EventCode.class);
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210 | criteria.add(Restrictions.eq("document", document));
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211 | eventCodes = criteria.list();
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212 | }
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213 | else
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214 | {
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215 | log.error("Failed to obtain a session from the sessionFactory");
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216 | }
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217 | }
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218 | else
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219 | {
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220 | log.error("Session factory was null");
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221 | }
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222 | }
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223 | finally
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224 | {
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225 | if (sess != null)
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226 | {
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227 | try
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228 | {
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229 | sess.close();
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230 | }
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231 | catch (Throwable t)
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232 | {
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233 | log.error("Failed to close session: " + t.getMessage(), t);
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234 | }
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235 | }
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236 | }
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237 | return eventCodes;
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238 | }
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239 | }
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