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| 1 | <?php |
| 2 | |
| 3 | namespace CirrusSearch\Search; |
| 4 | |
| 5 | use CirrusSearch\Search\Fetch\FetchPhaseConfigBuilder; |
| 6 | use Elastica\ResultSet as ElasticaResultSet; |
| 7 | |
| 8 | /** |
| 9 | * Result type for a full text search. |
| 10 | */ |
| 11 | final class FullTextResultsType extends BaseResultsType { |
| 12 | /** |
| 13 | * @var bool |
| 14 | */ |
| 15 | private $searchContainedSyntax; |
| 16 | |
| 17 | /** |
| 18 | * @var FetchPhaseConfigBuilder |
| 19 | */ |
| 20 | private $fetchPhaseBuilder; |
| 21 | /** |
| 22 | * @var TitleHelper |
| 23 | */ |
| 24 | private $titleHelper; |
| 25 | |
| 26 | /** |
| 27 | * @var string[] list of extra fields to extract |
| 28 | */ |
| 29 | private $extraFieldsToExtract; |
| 30 | |
| 31 | /** |
| 32 | * @var bool if true, deduplicate results from file namespace |
| 33 | */ |
| 34 | private bool $deduplicate; |
| 35 | |
| 36 | /** |
| 37 | * @param FetchPhaseConfigBuilder $fetchPhaseBuilder |
| 38 | * @param bool $searchContainedSyntax |
| 39 | * @param TitleHelper $titleHelper |
| 40 | * @param string[] $extraFieldsToExtract |
| 41 | * @param bool $deduplicate |
| 42 | */ |
| 43 | public function __construct( |
| 44 | FetchPhaseConfigBuilder $fetchPhaseBuilder, |
| 45 | $searchContainedSyntax, |
| 46 | TitleHelper $titleHelper, |
| 47 | array $extraFieldsToExtract = [], |
| 48 | bool $deduplicate = false |
| 49 | ) { |
| 50 | $this->fetchPhaseBuilder = $fetchPhaseBuilder; |
| 51 | $this->searchContainedSyntax = $searchContainedSyntax; |
| 52 | $this->titleHelper = $titleHelper; |
| 53 | $this->extraFieldsToExtract = $extraFieldsToExtract; |
| 54 | $this->deduplicate = $deduplicate; |
| 55 | } |
| 56 | |
| 57 | /** |
| 58 | * @return false|string|array corresponding to Elasticsearch source filtering syntax |
| 59 | */ |
| 60 | public function getSourceFiltering() { |
| 61 | return array_merge( |
| 62 | parent::getSourceFiltering(), |
| 63 | [ 'redirect.*', 'timestamp', 'text_bytes' ], |
| 64 | $this->extraFieldsToExtract |
| 65 | ); |
| 66 | } |
| 67 | |
| 68 | /** |
| 69 | * @return array |
| 70 | */ |
| 71 | public function getFields() { |
| 72 | return [ "text.word_count" ]; // word_count is only a stored field and isn't part of the source. |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * Setup highlighting. |
| 77 | * Don't fragment title because it is small. |
| 78 | * Get just one fragment from the text because that is all we will display. |
| 79 | * Get one fragment from redirect title and heading each or else they |
| 80 | * won't be sorted by score. |
| 81 | * |
| 82 | * @param array $extraHighlightFields (deprecated and ignored) |
| 83 | * @return array|null of highlighting configuration |
| 84 | */ |
| 85 | public function getHighlightingConfiguration( array $extraHighlightFields = [] ) { |
| 86 | $this->fetchPhaseBuilder->configureDefaultFullTextFields(); |
| 87 | return $this->fetchPhaseBuilder->buildHLConfig(); |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * @param ElasticaResultSet $result |
| 92 | * @return CirrusSearchResultSet |
| 93 | */ |
| 94 | public function transformElasticsearchResult( ElasticaResultSet $result ) { |
| 95 | // Should we make this a concrete class? |
| 96 | return new class( |
| 97 | $this->titleHelper, |
| 98 | $this->fetchPhaseBuilder, |
| 99 | $result, |
| 100 | $this->searchContainedSyntax, |
| 101 | $this->extraFieldsToExtract, |
| 102 | $this->deduplicate |
| 103 | ) extends BaseCirrusSearchResultSet { |
| 104 | /** @var TitleHelper */ |
| 105 | private $titleHelper; |
| 106 | /** @var FullTextCirrusSearchResultBuilder */ |
| 107 | private $resultBuilder; |
| 108 | /** @var ElasticaResultSet */ |
| 109 | private $results; |
| 110 | /** @var bool */ |
| 111 | private $searchContainedSyntax; |
| 112 | /** @var bool if true, deduplicate results from file namespace */ |
| 113 | private bool $deduplicate; |
| 114 | /** @var string[] array of titles for counting duplicates */ |
| 115 | private array $fileTitles = []; |
| 116 | |
| 117 | /** |
| 118 | * @param TitleHelper $titleHelper |
| 119 | * @param FetchPhaseConfigBuilder $builder |
| 120 | * @param ElasticaResultSet $results |
| 121 | * @param bool $searchContainedSyntax |
| 122 | * @param string[] $extraFieldsToExtract |
| 123 | * @param bool $deduplicate |
| 124 | */ |
| 125 | public function __construct( |
| 126 | TitleHelper $titleHelper, |
| 127 | FetchPhaseConfigBuilder $builder, |
| 128 | ElasticaResultSet $results, |
| 129 | $searchContainedSyntax, |
| 130 | array $extraFieldsToExtract, |
| 131 | bool $deduplicate |
| 132 | ) { |
| 133 | $this->titleHelper = $titleHelper; |
| 134 | $this->resultBuilder = new FullTextCirrusSearchResultBuilder( $this->titleHelper, |
| 135 | $builder->getHLFieldsPerTargetAndPriority(), $extraFieldsToExtract ); |
| 136 | $this->results = $results; |
| 137 | $this->searchContainedSyntax = $searchContainedSyntax; |
| 138 | $this->deduplicate = $deduplicate; |
| 139 | } |
| 140 | |
| 141 | /** |
| 142 | * @inheritDoc |
| 143 | */ |
| 144 | protected function transformOneResult( \Elastica\Result $result ) { |
| 145 | $source = $result->getSource(); |
| 146 | if ( $source['namespace'] === NS_FILE ) { |
| 147 | if ( in_array( $source['title'], $this->fileTitles ) ) { |
| 148 | if ( $this->deduplicate ) { |
| 149 | return null; |
| 150 | } |
| 151 | } else { |
| 152 | $this->fileTitles[] = $source['title']; |
| 153 | } |
| 154 | } |
| 155 | return $this->resultBuilder->build( $result ); |
| 156 | } |
| 157 | |
| 158 | /** |
| 159 | * @return \Elastica\ResultSet|null |
| 160 | */ |
| 161 | public function getElasticaResultSet() { |
| 162 | return $this->results; |
| 163 | } |
| 164 | |
| 165 | /** |
| 166 | * @inheritDoc |
| 167 | */ |
| 168 | public function searchContainedSyntax() { |
| 169 | return $this->searchContainedSyntax; |
| 170 | } |
| 171 | |
| 172 | protected function getTitleHelper(): TitleHelper { |
| 173 | return $this->titleHelper; |
| 174 | } |
| 175 | }; |
| 176 | } |
| 177 | |
| 178 | public function withFetchPhaseBuilder( FetchPhaseConfigBuilder $builder ): FullTextResultsType { |
| 179 | return new self( $builder, $this->searchContainedSyntax, $this->titleHelper, $this->extraFieldsToExtract, $this->deduplicate ); |
| 180 | } |
| 181 | |
| 182 | /** |
| 183 | * @return CirrusSearchResultSet |
| 184 | */ |
| 185 | public function createEmptyResult() { |
| 186 | return BaseCirrusSearchResultSet::emptyResultSet(); |
| 187 | } |
| 188 | } |