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| 1 | <?php |
| 2 | |
| 3 | namespace Flow\Formatter; |
| 4 | |
| 5 | use Flow\Data\Utils\SortRevisionsByRevisionId; |
| 6 | use Flow\Exception\FlowException; |
| 7 | use Flow\Model\UUID; |
| 8 | use MWExceptionHandler; |
| 9 | |
| 10 | class BoardHistoryQuery extends HistoryQuery { |
| 11 | /** |
| 12 | * @param UUID $boardWorkflowId |
| 13 | * @param int $limit |
| 14 | * @param UUID|null $offset |
| 15 | * @param string $direction 'rev' or 'fwd' |
| 16 | * @return FormatterRow[] |
| 17 | */ |
| 18 | public function getResults( UUID $boardWorkflowId, $limit = 50, ?UUID $offset = null, $direction = 'fwd' ) { |
| 19 | $options = $this->getOptions( $direction, $limit, $offset ); |
| 20 | |
| 21 | $headerHistory = $this->getHeaderResults( $boardWorkflowId, $options ) ?: []; |
| 22 | $topicListHistory = $this->getTopicListResults( $boardWorkflowId, $options ) ?: []; |
| 23 | $topicSummaryHistory = $this->getTopicSummaryResults( $boardWorkflowId, $options ) ?: []; |
| 24 | |
| 25 | $history = array_merge( $headerHistory, $topicListHistory, $topicSummaryHistory ); |
| 26 | usort( $history, new SortRevisionsByRevisionId( $options['order'] ) ); |
| 27 | |
| 28 | if ( isset( $options['limit'] ) ) { |
| 29 | $history = array_splice( $history, 0, $options['limit'] ); |
| 30 | } |
| 31 | |
| 32 | // We can't use ORDER BY ... DESC in SQL, because that will give us the |
| 33 | // largest entries that are > some offset. We want the smallest entries |
| 34 | // that are > that offset, but ordered in descending order. Core solves |
| 35 | // this problem in IndexPager->getBody by iterating in descending order. |
| 36 | if ( $direction === 'rev' ) { |
| 37 | $history = array_reverse( $history ); |
| 38 | } |
| 39 | |
| 40 | // fetch any necessary metadata |
| 41 | $this->loadMetadataBatch( $history ); |
| 42 | // build rows with the extra metadata |
| 43 | $results = []; |
| 44 | foreach ( $history as $revision ) { |
| 45 | try { |
| 46 | $result = $this->buildResult( $revision, 'rev_id' ); |
| 47 | } catch ( FlowException $e ) { |
| 48 | $result = false; |
| 49 | MWExceptionHandler::logException( $e ); |
| 50 | } |
| 51 | if ( $result ) { |
| 52 | $results[] = $result; |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | return $results; |
| 57 | } |
| 58 | |
| 59 | protected function getHeaderResults( UUID $boardWorkflowId, $options ) { |
| 60 | return $this->storage->find( |
| 61 | 'Header', |
| 62 | [ |
| 63 | 'rev_type_id' => $boardWorkflowId, |
| 64 | ], |
| 65 | $options |
| 66 | ); |
| 67 | } |
| 68 | |
| 69 | protected function getTopicListResults( UUID $boardWorkflowId, $options ) { |
| 70 | // Can't use 'PostRevision' because we need to get only the ones with the right board ID. |
| 71 | return $this->doInternalQueries( |
| 72 | 'PostRevisionBoardHistoryEntry', |
| 73 | [ |
| 74 | 'topic_list_id' => $boardWorkflowId, |
| 75 | ], |
| 76 | $options, |
| 77 | self::POST_OVERFETCH_FACTOR |
| 78 | ); |
| 79 | } |
| 80 | |
| 81 | protected function getTopicSummaryResults( UUID $boardWorkflowId, $options ) { |
| 82 | return $this->storage->find( |
| 83 | 'PostSummaryBoardHistoryEntry', |
| 84 | [ |
| 85 | 'topic_list_id' => $boardWorkflowId, |
| 86 | ], |
| 87 | $options |
| 88 | ); |
| 89 | } |
| 90 | } |