1 | package gov.hhs.fha.nhinc.repository.service;
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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.dao.DocumentDao;
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5 | import gov.hhs.fha.nhinc.repository.dao.EventCodeDao;
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6 | import gov.hhs.fha.nhinc.repository.model.DocumentQueryParams;
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7 | import gov.hhs.fha.nhinc.repository.model.EventCode;
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8 | import gov.hhs.fha.nhinc.util.hash.SHA1HashCode;
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9 | import java.util.ArrayList;
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10 | import java.util.List;
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11 | import java.util.Set;
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12 | import org.apache.commons.logging.Log;
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13 | import org.apache.commons.logging.LogFactory;
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14 |
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15 | /**
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16 | * Persistence service for Document records
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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 DocumentService
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21 | {
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22 | private static Log log = LogFactory.getLog(DocumentService.class);
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23 |
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24 | /**
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25 | * Save a document record.
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26 | *
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27 | * @param document Document object to save.
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28 | */
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29 | public void saveDocument(Document document)
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30 | {
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31 | log.debug("Saving a document");
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32 | if (document != null)
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33 | {
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34 | if (document.getDocumentid() != null)
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35 | {
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36 | if(log.isDebugEnabled())
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37 | {
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38 | log.debug("Performing an update for document: " + document.getDocumentid().longValue());
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39 | }
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40 | Document ecDoc = getDocument(document.getDocumentid());
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41 | if (ecDoc != null)
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42 | {
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43 | // Delete existing event codes
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44 | Set<EventCode> eventCodes = ecDoc.getEventCodes();
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45 | if ((eventCodes != null) && !eventCodes.isEmpty())
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46 | {
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47 | EventCodeDao eventCodeDao = new EventCodeDao();
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48 | for (EventCode eventCode : eventCodes)
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49 | {
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50 | eventCodeDao.delete(eventCode);
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51 | eventCode.setEventCodeId(null);
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52 | }
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53 | }
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54 |
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55 | // Reset event code identifiers
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56 | eventCodes = document.getEventCodes();
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57 | if ((eventCodes != null) && !eventCodes.isEmpty())
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58 | {
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59 | for (EventCode eventCode : eventCodes)
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60 | {
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61 | if (eventCode.getEventCodeId() != null)
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62 | {
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63 | eventCode.setEventCodeId(null);
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64 | }
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65 | }
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66 | }
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67 | }
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68 | }
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69 | else
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70 | {
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71 | log.debug("Performing an insert");
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72 | }
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73 |
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74 | // Calculate the hash code.
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75 | //-------------------------
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76 | if (document.getRawData() != null)
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77 | {
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78 | try
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79 | {
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80 | String sHash = "";
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81 | sHash = SHA1HashCode.calculateSHA1(new String(document.getRawData()));
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82 | if (log.isDebugEnabled())
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83 | {
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84 | log.debug("Created Hash Code: " + sHash + " for string: " +
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85 | new String(document.getRawData()));
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86 | }
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87 | document.setHash(sHash);
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88 | }
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89 | catch (Throwable t)
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90 | {
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91 | String sError = "Failed to create SHA-1 Hash code. Error: " + t.getMessage() +
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92 | "Data Text: " + new String(document.getRawData());
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93 | log.error(sError, t);
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94 | }
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95 | }
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96 | else
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97 | {
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98 | document.setHash("");
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99 | log.warn("No SHA-1 Hash Code created because document was null.");
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100 | }
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101 | }
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102 |
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103 | DocumentDao dao = new DocumentDao();
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104 | dao.save(document);
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105 | }
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106 |
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107 | /**
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108 | * Delete a document
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109 | *
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110 | * @param document Document to delete
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111 | * @throws DocumentServiceException
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112 | */
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113 | public void deleteDocument(Document document) throws DocumentServiceException
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114 | {
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115 | log.debug("Deleting a document");
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116 | DocumentDao dao = new DocumentDao();
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117 |
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118 | if ((document != null) && (document.getDocumentid() == null) && (document.getDocumentUniqueId() != null))
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119 | {
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120 | // Query by unique id and delete if only one exists.
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121 | DocumentQueryParams params = new DocumentQueryParams();
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122 | List<String> uniqueIds = new ArrayList<String>();
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123 | uniqueIds.add(document.getDocumentUniqueId());
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124 |
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125 | List<Document> docs = documentQuery(params);
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126 | if ((docs != null) && (docs.size() == 1))
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127 | {
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128 | document = docs.get(0);
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129 | }
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130 | else
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131 | {
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132 | throw new DocumentServiceException("Single document match not found for document unique id: " + document.getDocumentUniqueId());
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133 | }
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134 | }
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135 | else
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136 | {
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137 | if (document == null)
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138 | {
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139 | throw new DocumentServiceException("Document to delete was null");
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140 | }
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141 | else if (document.getDocumentUniqueId() == null)
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142 | {
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143 | throw new DocumentServiceException("Document unique id was null");
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144 | }
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145 | }
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146 |
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147 | dao.delete(document);
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148 | }
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149 |
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150 | /**
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151 | * Retrieve a document by identifier
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152 | *
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153 | * @param documentId Document identifier
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154 | * @return Retrieved document
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155 | */
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156 | public Document getDocument(Long documentId)
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157 | {
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158 | DocumentDao dao = new DocumentDao();
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159 | return dao.findById(documentId);
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160 | }
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161 |
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162 | /**
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163 | * Retrieves all documents
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164 | *
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165 | * @return All document records
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166 | */
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167 | public List<Document> getAllDocuments()
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168 | {
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169 | DocumentDao dao = new DocumentDao();
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170 | return dao.findAll();
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171 | }
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172 |
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173 | /**
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174 | * Document query
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175 | *
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176 | * @param params Document query parameters
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177 | * @return Query results
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178 | */
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179 | public List<Document> documentQuery(DocumentQueryParams params)
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180 | {
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181 | DocumentDao dao = new DocumentDao();
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182 | return dao.findDocuments(params);
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183 | }
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184 | }
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