kitodo /
kitodo-presentation
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| Total Complexity | 110 |
| Total Lines | 759 |
| Duplicated Lines | 0 % |
| Changes | 10 | ||
| Bugs | 0 | Features | 0 |
Complex classes like OaiPmhController often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use OaiPmhController, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 30 | class OaiPmhController extends AbstractController |
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| 31 | { |
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| 32 | /** |
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| 33 | * @var TokenRepository |
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| 34 | */ |
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| 35 | protected $tokenRepository; |
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| 36 | |||
| 37 | /** |
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| 38 | * @param TokenRepository $tokenRepository |
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| 39 | */ |
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| 40 | public function injectTokenRepository(TokenRepository $tokenRepository) |
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| 41 | { |
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| 42 | $this->tokenRepository = $tokenRepository; |
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| 43 | } |
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| 44 | |||
| 45 | /** |
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| 46 | * @var CollectionRepository |
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| 47 | */ |
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| 48 | protected $collectionRepository; |
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| 49 | |||
| 50 | /** |
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| 51 | * @param CollectionRepository $collectionRepository |
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| 52 | */ |
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| 53 | public function injectCollectionRepository(CollectionRepository $collectionRepository) |
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| 54 | { |
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| 55 | $this->collectionRepository = $collectionRepository; |
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| 56 | } |
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| 57 | |||
| 58 | /** |
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| 59 | * @var LibraryRepository |
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| 60 | */ |
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| 61 | protected $libraryRepository; |
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| 62 | |||
| 63 | /** |
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| 64 | * @param LibraryRepository $libraryRepository |
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| 65 | */ |
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| 66 | public function injectLibraryRepository(LibraryRepository $libraryRepository) |
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| 69 | } |
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| 70 | |||
| 71 | /** |
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| 72 | * Initializes the current action |
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| 73 | * |
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| 74 | * @return void |
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| 75 | */ |
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| 76 | public function initializeAction() |
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| 79 | } |
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| 80 | |||
| 81 | /** |
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| 82 | * Did an error occur? |
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| 83 | * |
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| 84 | * @var string |
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| 85 | * @access protected |
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| 86 | */ |
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| 87 | protected $error; |
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| 88 | |||
| 89 | /** |
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| 90 | * This holds the configuration for all supported metadata prefixes |
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| 91 | * |
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| 92 | * @var array |
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| 93 | * @access protected |
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| 94 | */ |
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| 95 | protected $formats = [ |
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| 96 | 'oai_dc' => [ |
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| 97 | 'schema' => 'http://www.openarchives.org/OAI/2.0/oai_dc.xsd', |
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| 98 | 'namespace' => 'http://www.openarchives.org/OAI/2.0/oai_dc/', |
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| 99 | 'requiredFields' => ['record_id'], |
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| 100 | ], |
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| 101 | 'epicur' => [ |
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| 102 | 'schema' => 'http://www.persistent-identifier.de/xepicur/version1.0/xepicur.xsd', |
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| 103 | 'namespace' => 'urn:nbn:de:1111-2004033116', |
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| 104 | 'requiredFields' => ['purl', 'urn'], |
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| 105 | ], |
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| 106 | 'mets' => [ |
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| 107 | 'schema' => 'http://www.loc.gov/standards/mets/version17/mets.v1-7.xsd', |
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| 108 | 'namespace' => 'http://www.loc.gov/METS/', |
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| 109 | 'requiredFields' => ['location'], |
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| 110 | ] |
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| 111 | ]; |
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| 112 | |||
| 113 | /** |
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| 114 | * @var array |
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| 115 | */ |
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| 116 | protected $parameters = []; |
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| 117 | |||
| 118 | /** |
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| 119 | * Delete expired resumption tokens |
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| 120 | * |
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| 121 | * @access protected |
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| 122 | * |
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| 123 | * @return void |
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| 124 | */ |
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| 125 | protected function deleteExpiredTokens() |
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| 126 | { |
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| 127 | // Delete expired resumption tokens. |
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| 128 | $this->tokenRepository->deleteExpiredTokens($this->settings['expired']); |
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| 129 | } |
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| 130 | |||
| 131 | /** |
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| 132 | * Load URL parameters |
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| 133 | * |
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| 134 | * @access protected |
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| 135 | * |
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| 136 | * @return void |
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| 137 | */ |
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| 138 | protected function getUrlParams() |
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| 139 | { |
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| 140 | $allowedParams = [ |
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| 141 | 'verb', |
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| 142 | 'identifier', |
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| 143 | 'metadataPrefix', |
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| 144 | 'from', |
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| 145 | 'until', |
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| 146 | 'set', |
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| 147 | 'resumptionToken' |
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| 148 | ]; |
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| 149 | // Clear plugin variables. |
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| 150 | $this->parameters = []; |
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| 151 | // Set only allowed parameters. |
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| 152 | foreach ($allowedParams as $param) { |
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| 153 | if (GeneralUtility::_GP($param)) { |
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| 154 | $this->parameters[$param] = GeneralUtility::_GP($param); |
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| 155 | } |
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| 156 | } |
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| 157 | } |
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| 158 | |||
| 159 | /** |
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| 160 | * Get unqualified Dublin Core data. |
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| 161 | * @see http://www.openarchives.org/OAI/openarchivesprotocol.html#dublincore |
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| 162 | * |
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| 163 | * @access protected |
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| 164 | * |
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| 165 | * @param array $record : The full record array |
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| 166 | * |
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| 167 | * @return array $metadata: The mapped metadata array |
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| 168 | */ |
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| 169 | protected function getDcData(array $record) |
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| 222 | } |
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| 223 | |||
| 224 | |||
| 225 | /** |
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| 226 | * Get METS data. |
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| 227 | * @see http://www.loc.gov/standards/mets/docs/mets.v1-7.html |
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| 228 | * |
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| 229 | * @access protected |
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| 230 | * |
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| 231 | * @param array $record : The full record array |
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| 232 | * |
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| 233 | * @return string: The fetched METS XML |
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| 234 | */ |
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| 235 | protected function getMetsData(array $record) |
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| 236 | { |
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| 237 | $mets = null; |
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| 238 | // Load METS file. |
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| 239 | $xml = new \DOMDocument(); |
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| 240 | if ($xml->load($record['location'])) { |
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| 241 | // Get root element. |
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| 242 | $root = $xml->getElementsByTagNameNS($this->formats['mets']['namespace'], 'mets'); |
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| 243 | if ($root->item(0) instanceof \DOMNode) { |
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| 244 | $mets = $xml->saveXML($root->item(0)); |
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| 245 | } else { |
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| 246 | $this->logger->error('No METS part found in document with location "' . $record['location'] . '"'); |
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| 247 | } |
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| 248 | } else { |
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| 249 | $this->logger->error('Could not load XML file from "' . $record['location'] . '"'); |
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| 250 | } |
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| 251 | return $mets; |
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| 252 | } |
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| 253 | |||
| 254 | /** |
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| 255 | * The main method of the plugin |
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| 256 | * |
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| 257 | * @return void |
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| 258 | */ |
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| 259 | public function mainAction() |
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| 260 | { |
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| 261 | // Get allowed GET and POST variables. |
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| 262 | $this->getUrlParams(); |
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| 263 | |||
| 264 | // Delete expired resumption tokens. |
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| 265 | $this->deleteExpiredTokens(); |
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| 266 | |||
| 267 | switch ($this->parameters['verb']) { |
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| 268 | case 'GetRecord': |
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| 269 | $this->verbGetRecord(); |
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| 270 | break; |
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| 271 | case 'Identify': |
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| 272 | $this->verbIdentify(); |
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| 273 | break; |
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| 274 | case 'ListIdentifiers': |
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| 275 | $this->verbListIdentifiers(); |
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| 276 | break; |
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| 277 | case 'ListMetadataFormats': |
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| 278 | $this->verbListMetadataFormats(); |
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| 279 | break; |
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| 280 | case 'ListRecords': |
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| 281 | $this->verbListRecords(); |
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| 282 | break; |
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| 283 | case 'ListSets': |
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| 284 | $this->verbListSets(); |
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| 285 | break; |
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| 286 | default: |
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| 287 | $this->error = 'badVerb'; |
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| 288 | break; |
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| 289 | } |
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| 290 | |||
| 291 | $this->view->assign('parameters', $this->parameters); |
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| 292 | $this->view->assign('error', $this->error); |
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| 293 | |||
| 294 | return; |
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| 295 | } |
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| 296 | |||
| 297 | /** |
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| 298 | * Continue with resumption token |
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| 299 | * |
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| 300 | * @access protected |
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| 301 | * |
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| 302 | * @return array|null list of uids |
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| 303 | */ |
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| 304 | protected function resume(): ?array |
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| 317 | } |
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| 318 | } |
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| 319 | |||
| 320 | /** |
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| 321 | * Process verb "GetRecord" |
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| 322 | * |
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| 323 | * @access protected |
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| 324 | * |
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| 325 | * @return void |
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| 326 | */ |
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| 327 | protected function verbGetRecord() |
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| 371 | } |
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| 372 | |||
| 373 | /** |
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| 374 | * Process verb "Identify" |
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| 375 | * |
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| 376 | * @access protected |
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| 377 | * |
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| 378 | * @return void |
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| 379 | */ |
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| 380 | protected function verbIdentify() |
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| 381 | { |
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| 382 | $library = $this->libraryRepository->findByUid($this->settings['library']); |
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| 383 | |||
| 384 | $oaiIdentifyInfo = []; |
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| 385 | |||
| 386 | if (!$oaiIdentifyInfo) { |
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| 387 | $this->logger->notice('Incomplete plugin configuration'); |
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| 388 | } |
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| 389 | |||
| 390 | $oaiIdentifyInfo['oai_label'] = $library->getOaiLabel(); |
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| 391 | // Use default values for an installation with incomplete plugin configuration. |
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| 392 | if (empty($oaiIdentifyInfo['oai_label'])) { |
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| 393 | $oaiIdentifyInfo['oai_label'] = 'Kitodo.Presentation OAI-PMH Interface (default configuration)'; |
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| 394 | $this->logger->notice('Incomplete plugin configuration (oai_label is missing)'); |
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| 395 | } |
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| 396 | |||
| 397 | $oaiIdentifyInfo['contact'] = $library->getContact(); |
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| 398 | if (empty($oaiIdentifyInfo['contact'])) { |
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| 399 | $oaiIdentifyInfo['contact'] = '[email protected]'; |
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| 400 | $this->logger->notice('Incomplete plugin configuration (contact is missing)'); |
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| 401 | } |
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| 402 | |||
| 403 | $document = $this->documentRepository->findOldestDocument(); |
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| 404 | |||
| 405 | if ($document) { |
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| 406 | $oaiIdentifyInfo['earliestDatestamp'] = gmdate('Y-m-d\TH:i:s\Z', $document->getTstamp()->getTimestamp()); |
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| 407 | } else { |
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| 408 | // Provide a fallback timestamp if no document is found |
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| 409 | $oaiIdentifyInfo['earliestDatestamp'] = '0000-00-00T00:00:00Z'; |
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| 410 | |||
| 411 | // access storagePid from TypoScript |
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| 412 | $pageSettings = $this->configurationManager->getConfiguration($this->configurationManager::CONFIGURATION_TYPE_FULL_TYPOSCRIPT); |
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| 413 | $storagePid = $pageSettings["plugin."]["tx_dlf."]["persistence."]["storagePid"]; |
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| 414 | if ($storagePid > 0) { |
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| 415 | $this->logger->notice('No records found with PID ' . $storagePid); |
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| 416 | } else { |
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| 417 | $this->logger->notice('No records found'); |
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| 418 | } |
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| 419 | } |
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| 420 | $this->view->assign('oaiIdentifyInfo', $oaiIdentifyInfo); |
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| 421 | } |
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| 422 | |||
| 423 | /** |
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| 424 | * Process verb "ListIdentifiers" |
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| 425 | * |
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| 426 | * @access protected |
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| 427 | * |
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| 428 | * @return void |
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| 429 | */ |
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| 430 | protected function verbListIdentifiers() |
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| 431 | { |
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| 432 | // If we have a resumption token we can continue our work |
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| 433 | if (!empty($this->parameters['resumptionToken'])) { |
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| 434 | // "resumptionToken" is an exclusive argument. |
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| 435 | if (count($this->parameters) > 2) { |
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| 436 | $this->error = 'badArgument'; |
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| 437 | return; |
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| 438 | } else { |
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| 439 | // return next chunk of documents |
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| 440 | $resultSet = $this->resume(); |
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| 441 | if (is_array($resultSet)) { |
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| 442 | $listIdentifiers = $this->generateOutputForDocumentList($resultSet); |
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| 443 | $this->view->assign('listIdentifiers', $listIdentifiers); |
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| 444 | } |
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| 445 | return; |
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| 446 | } |
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| 447 | } |
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| 448 | // "metadataPrefix" is required and "identifier" is not allowed. |
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| 449 | if (empty($this->parameters['metadataPrefix']) || !empty($this->parameters['identifier'])) { |
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| 450 | $this->error = 'badArgument'; |
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| 451 | return; |
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| 452 | } |
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| 453 | if (!in_array($this->parameters['metadataPrefix'], array_keys($this->formats))) { |
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| 454 | $this->error = 'cannotDisseminateFormat'; |
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| 455 | return; |
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| 456 | } |
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| 457 | try { |
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| 458 | $documentSet = $this->fetchDocumentUIDs(); |
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| 459 | } catch (\Exception $exception) { |
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| 460 | $this->error = 'idDoesNotExist'; |
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| 461 | return; |
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| 462 | } |
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| 463 | // create new and empty documentlist |
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| 464 | $resultSet = []; |
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| 465 | if (is_array($documentSet)) { |
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| 466 | $resultSet['elements'] = $documentSet; |
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| 467 | $resultSet['metadata'] = [ |
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| 468 | 'cursor' => 0, |
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| 469 | 'completeListSize' => count($documentSet), |
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| 470 | 'metadataPrefix' => $this->parameters['metadataPrefix'], |
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| 471 | ]; |
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| 472 | } |
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| 473 | |||
| 474 | $listIdentifiers = $this->generateOutputForDocumentList($resultSet); |
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| 475 | $this->view->assign('listIdentifiers', $listIdentifiers); |
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| 476 | } |
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| 477 | |||
| 478 | /** |
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| 479 | * Process verb "ListMetadataFormats" |
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| 480 | * |
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| 481 | * @access protected |
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| 482 | * |
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| 483 | * @return void |
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| 484 | */ |
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| 485 | protected function verbListMetadataFormats() |
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| 509 | } |
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| 510 | |||
| 511 | /** |
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| 512 | * Process verb "ListRecords" |
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| 513 | * |
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| 514 | * @access protected |
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| 515 | * |
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| 516 | * @return void |
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| 517 | */ |
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| 518 | protected function verbListRecords() |
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| 519 | { |
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| 520 | // Check for invalid arguments. |
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| 521 | if (!empty($this->parameters['resumptionToken'])) { |
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| 522 | // "resumptionToken" is an exclusive argument. |
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| 523 | if (count($this->parameters) > 2) { |
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| 524 | $this->error = 'badArgument'; |
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| 525 | return; |
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| 526 | } else { |
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| 527 | // return next chunk of documents |
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| 528 | $resultSet = $this->resume(); |
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| 529 | if (is_array($resultSet)) { |
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| 530 | $listRecords = $this->generateOutputForDocumentList($resultSet); |
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| 531 | $this->parameters['metadataPrefix'] = $resultSet['metadata']['metadataPrefix']; |
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| 532 | $this->view->assign('listRecords', $listRecords); |
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| 533 | } |
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| 534 | return; |
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| 535 | } |
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| 536 | } |
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| 537 | if (empty($this->parameters['metadataPrefix']) || !empty($this->parameters['identifier'])) { |
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| 538 | // "metadataPrefix" is required and "identifier" is not allowed. |
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| 539 | $this->error = 'badArgument'; |
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| 540 | return; |
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| 541 | } |
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| 542 | // Check "metadataPrefix" for valid value. |
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| 543 | if (!in_array($this->parameters['metadataPrefix'], array_keys($this->formats))) { |
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| 544 | $this->error = 'cannotDisseminateFormat'; |
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| 545 | return; |
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| 546 | } |
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| 547 | try { |
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| 548 | $documentSet = $this->fetchDocumentUIDs(); |
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| 549 | } catch (\Exception $exception) { |
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| 550 | $this->error = 'idDoesNotExist'; |
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| 551 | return; |
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| 552 | } |
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| 553 | $resultSet = []; |
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| 554 | if (is_array($documentSet)) { |
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| 555 | $resultSet['elements'] = $documentSet; |
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| 556 | $resultSet['metadata'] = [ |
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| 557 | 'cursor' => 0, |
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| 558 | 'completeListSize' => count($documentSet), |
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| 559 | 'metadataPrefix' => $this->parameters['metadataPrefix'], |
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| 560 | ]; |
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| 561 | } |
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| 562 | |||
| 563 | $resultSet = $this->generateOutputForDocumentList($resultSet); |
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| 564 | $this->view->assign('listRecords', $resultSet); |
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| 565 | } |
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| 566 | |||
| 567 | /** |
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| 568 | * Process verb "ListSets" |
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| 569 | * |
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| 570 | * @access protected |
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| 571 | * |
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| 572 | * @return void |
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| 573 | */ |
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| 574 | protected function verbListSets() |
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| 575 | { |
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| 576 | // It is required to set a oai_name inside the collection record to be shown in oai-pmh plugin. |
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| 577 | $this->settings['hideEmptyOaiNames'] = true; |
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| 578 | |||
| 579 | $oaiSets = $this->collectionRepository->findCollectionsBySettings($this->settings); |
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| 580 | |||
| 581 | $this->view->assign('oaiSets', $oaiSets); |
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| 582 | } |
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| 583 | |||
| 584 | /** |
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| 585 | * Fetch records |
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| 586 | * |
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| 587 | * @access protected |
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| 588 | * |
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| 589 | * @return array|null Array of matching records |
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| 590 | */ |
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| 591 | protected function fetchDocumentUIDs() |
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| 592 | { |
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| 593 | $solr_query = ''; |
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| 594 | // Check "set" for valid value. |
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| 595 | if (!empty($this->parameters['set'])) { |
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| 596 | // For SOLR we need the index_name of the collection, |
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| 597 | // For DB Query we need the UID of the collection |
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| 598 | |||
| 599 | $result = $this->collectionRepository->getIndexNameForSolr($this->settings, $this->parameters['set']); |
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| 600 | |||
| 601 | if ($resArray = $result->fetch()) { |
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| 602 | if ($resArray['index_query'] != "") { |
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| 603 | $solr_query .= '(' . $resArray['index_query'] . ')'; |
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| 604 | } else { |
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| 605 | $solr_query .= 'collection:' . '"' . $resArray['index_name'] . '"'; |
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| 606 | } |
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| 607 | } else { |
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| 608 | $this->error = 'noSetHierarchy'; |
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| 609 | return null; |
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| 610 | } |
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| 611 | } else { |
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| 612 | // If no set is specified we have to query for all collections |
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| 613 | $solr_query .= 'collection:* NOT collection:""'; |
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| 614 | } |
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| 615 | // Check for required fields. |
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| 616 | foreach ($this->formats[$this->parameters['metadataPrefix']]['requiredFields'] as $required) { |
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| 617 | $solr_query .= ' NOT ' . $required . ':""'; |
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| 618 | } |
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| 619 | // toplevel="true" is always required |
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| 620 | $solr_query .= ' AND toplevel:true'; |
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| 621 | $from = "*"; |
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| 622 | // Check "from" for valid value. |
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| 623 | if (!empty($this->parameters['from'])) { |
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| 624 | // Is valid format? |
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| 625 | if ( |
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| 626 | is_array($date_array = strptime($this->parameters['from'], '%Y-%m-%dT%H:%M:%SZ')) |
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| 627 | || is_array($date_array = strptime($this->parameters['from'], '%Y-%m-%d')) |
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| 628 | ) { |
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| 629 | $timestamp = gmmktime($date_array['tm_hour'], $date_array['tm_min'], $date_array['tm_sec'], |
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| 630 | $date_array['tm_mon'] + 1, $date_array['tm_mday'], $date_array['tm_year'] + 1900); |
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| 631 | $from = date("Y-m-d", $timestamp) . 'T' . date("H:i:s", $timestamp) . '.000Z'; |
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| 632 | } else { |
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| 633 | $this->error = 'badArgument'; |
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| 634 | return; |
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| 635 | } |
||
| 636 | } |
||
| 637 | $until = "*"; |
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| 638 | // Check "until" for valid value. |
||
| 639 | if (!empty($this->parameters['until'])) { |
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| 640 | // Is valid format? |
||
| 641 | if ( |
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| 642 | is_array($date_array = strptime($this->parameters['until'], '%Y-%m-%dT%H:%M:%SZ')) |
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| 643 | || is_array($date_array = strptime($this->parameters['until'], '%Y-%m-%d')) |
||
| 644 | ) { |
||
| 645 | $timestamp = gmmktime($date_array['tm_hour'], $date_array['tm_min'], $date_array['tm_sec'], |
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| 646 | $date_array['tm_mon'] + 1, $date_array['tm_mday'], $date_array['tm_year'] + 1900); |
||
| 647 | $until = date("Y-m-d", $timestamp) . 'T' . date("H:i:s", $timestamp) . '.999Z'; |
||
| 648 | if ($from != "*" && $from > $until) { |
||
| 649 | $this->error = 'badArgument'; |
||
| 650 | } |
||
| 651 | } else { |
||
| 652 | $this->error = 'badArgument'; |
||
| 653 | } |
||
| 654 | } |
||
| 655 | // Check "from" and "until" for same granularity. |
||
| 656 | if ( |
||
| 657 | !empty($this->parameters['from']) |
||
| 658 | && !empty($this->parameters['until']) |
||
| 659 | ) { |
||
| 660 | if (strlen($this->parameters['from']) != strlen($this->parameters['until'])) { |
||
| 661 | $this->error = 'badArgument'; |
||
| 662 | } |
||
| 663 | } |
||
| 664 | $solr_query .= ' AND timestamp:[' . $from . ' TO ' . $until . ']'; |
||
| 665 | $documentSet = []; |
||
| 666 | $solr = Solr::getInstance($this->settings['solrcore']); |
||
| 667 | if (!$solr->ready) { |
||
| 668 | $this->logger->error('Apache Solr not available'); |
||
| 669 | return $documentSet; |
||
| 670 | } |
||
| 671 | if (intval($this->settings['solr_limit']) > 0) { |
||
| 672 | $solr->limit = intval($this->settings['solr_limit']); |
||
| 673 | } |
||
| 674 | // We only care about the UID in the results and want them sorted |
||
| 675 | $parameters = [ |
||
| 676 | "fields" => "uid", |
||
| 677 | "sort" => [ |
||
| 678 | "uid" => "asc" |
||
| 679 | ] |
||
| 680 | ]; |
||
| 681 | $parameters['query'] = $solr_query; |
||
| 682 | $result = $solr->search_raw($parameters); |
||
| 683 | if (empty($result)) { |
||
| 684 | $this->error = 'noRecordsMatch'; |
||
| 685 | return; |
||
| 686 | } |
||
| 687 | foreach ($result as $doc) { |
||
| 688 | $documentSet[] = $doc->uid; |
||
| 689 | } |
||
| 690 | return $documentSet; |
||
| 691 | } |
||
| 692 | |||
| 693 | /** |
||
| 694 | * Fetch more information for document list |
||
| 695 | * @access protected |
||
| 696 | * |
||
| 697 | * @param array $documentListSet |
||
| 698 | * |
||
| 699 | * @return array of enriched records |
||
| 700 | */ |
||
| 701 | protected function generateOutputForDocumentList(array $documentListSet) |
||
| 743 | } |
||
| 744 | |||
| 745 | /** |
||
| 746 | * Generate resumption token |
||
| 747 | * |
||
| 748 | * @access protected |
||
| 749 | * |
||
| 750 | * @param array $documentListSet |
||
| 751 | * @param int $numShownDocuments |
||
| 752 | * |
||
| 753 | * @return void |
||
| 754 | */ |
||
| 755 | protected function generateResumptionTokenForDocumentListSet(array $documentListSet, int $numShownDocuments) |
||
| 789 | } |
||
| 790 | } |
||
| 791 | } |
||
| 792 |
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