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<?php |
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namespace PubPeerFoundation\PublicationDataExtractor\Resources\Extractors; |
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use PubPeerFoundation\PublicationDataExtractor\Exceptions\JournalTitleNotFoundException; |
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use PubPeerFoundation\PublicationDataExtractor\Exceptions\UnparseableApiException; |
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class Crossref extends Extractor implements ProvidesPublicationData, ProvidesIdentifiersData, ProvidesJournalData, ProvidesAuthorsData, ProvidesTagsData, ProvidesLinksData |
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{ |
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/** |
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* @throws UnparseableApiException |
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*/ |
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protected function fillSearchTree(): void |
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{ |
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if ('ok' !== $this->document['status']) { |
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throw new UnparseableApiException(); |
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} |
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$this->searchTree = $this->document['message']; |
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} |
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/** |
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* Extract and format data needed for the Publication Model. |
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*/ |
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public function extractPublicationData(): void |
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{ |
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$date = $this->extractDateFrom(['published-print', 'published-online', 'issued']); |
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$this->resourceOutput['publication'] = [ |
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'title' => get_string($this->searchTree, 'title'), |
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'abstract' => get_string($this->searchTree, 'abstract'), |
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'url' => $this->searchTree['URL'] ?? null, |
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'published_at' => $date, |
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]; |
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} |
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/** |
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* Extract and format data needed for the Identifiers Relationship |
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* on the Publication Model. |
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*/ |
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public function extractIdentifiersData(): void |
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{ |
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if (! empty($this->searchTree['DOI'])) { |
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$this->resourceOutput['identifiers'][] = [ |
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'value' => $this->searchTree['DOI'], |
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'type' => 'doi', |
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]; |
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} |
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foreach (get_array($this->searchTree, 'ISSN') as $issn) { |
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$this->resourceOutput['identifiers'][] = [ |
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'value' => $issn, |
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'type' => 'issn', |
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]; |
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} |
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} |
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/** |
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* Extract and format data needed for the Journal Relationship |
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* on the Publication Model. |
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* |
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* @throws JournalTitleNotFoundException |
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*/ |
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public function extractJournalData(): void |
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{ |
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$this->resourceOutput['journal'] = [ |
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'title' => get_string($this->searchTree, 'container-title'), |
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'issn' => get_array($this->searchTree, 'ISSN'), |
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'publisher' => get_string($this->searchTree, 'publisher'), |
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]; |
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if (empty($this->searchTree['container-title']) && empty($this->searchTree['ISSN'])) { |
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throw new JournalTitleNotFoundException(); |
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} |
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} |
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/** |
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* Extract and format data needed for the Authors Relationship |
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* on the Publication Model. |
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*/ |
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public function extractAuthorsData(): void |
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{ |
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foreach (get_array($this->searchTree, 'author') as $author) { |
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if (isset($author['family'])) { |
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$this->resourceOutput['authors'][] = [ |
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'first_name' => get_string($author, 'given'), |
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'last_name' => get_string($author, 'family'), |
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'orcid' => get_string($author, 'ORCID'), |
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'sequence' => get_string($author, 'sequence'), |
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'affiliation' => get_array($author, 'affiliation'), |
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]; |
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} |
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} |
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} |
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/** |
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* Extract and format data needed for the Types Relationship |
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* on the Publication Model. |
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*/ |
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public function extractTypesData() |
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{ |
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$this->resourceOutput['types'][] = [ |
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'name' => get_string($this->searchTree, 'type'), |
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]; |
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} |
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/** |
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* Extract and format data needed for the tags Relationship |
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* on the Publication Model. |
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*/ |
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public function extractTagsData(): void |
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{ |
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foreach (get_array($this->searchTree, 'subject') as $tag) { |
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$this->resourceOutput['tags'][] = [ |
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'name' => $tag, |
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]; |
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} |
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} |
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/** |
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* Extract and format data needed for the links Relationship |
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* on the Publication Model. |
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*/ |
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public function extractLinksData(): void |
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{ |
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if (array_key_exists('relation', $this->searchTree)) { |
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foreach (get_array($this->searchTree['relation'], 'has-preprint') as $preprint) { |
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$this->resourceOutput['links'][] = [ |
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'has_preprint' => $preprint['id'], |
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]; |
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} |
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foreach (get_array($this->searchTree['relation'], 'is-preprint-of') as $preprint) { |
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$this->resourceOutput['links'][] = [ |
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'is_preprint_of' => $preprint['id'], |
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]; |
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} |
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} |
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} |
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/** |
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* @param $array |
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* @return mixed |
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*/ |
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protected function extractDateFrom($array) |
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{ |
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$datePartsContainer = array_values(array_filter($array, function ($string) { |
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return isset($this->searchTree[$string]); |
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}))[0]; |
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return date_from_parts($this->searchTree[$datePartsContainer]['date-parts'][0]); |
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} |
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} |
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PubPeerFoundation /
PublicationDataExtractor
