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| 1 | <?php |
| 2 | |
| 3 | namespace Flow\Formatter; |
| 4 | |
| 5 | use Flow\Data\ManagerGroup; |
| 6 | use Flow\Exception\FlowException; |
| 7 | use Flow\Model\PostRevision; |
| 8 | use Flow\Model\UUID; |
| 9 | use Flow\Model\Workflow; |
| 10 | use Wikimedia\Rdbms\IResultWrapper; |
| 11 | |
| 12 | /** |
| 13 | * This class is necessary so we can inject the name of |
| 14 | * a topic title into the category. Once we have pages |
| 15 | * in the topic namespace named after the topic themselves |
| 16 | * this can be simplified down to only pre-load the workflow |
| 17 | * and not the related posts. |
| 18 | */ |
| 19 | class CategoryViewerQuery { |
| 20 | /** |
| 21 | * @var PostRevision[] |
| 22 | */ |
| 23 | protected $posts = []; |
| 24 | |
| 25 | /** |
| 26 | * @var Workflow[] |
| 27 | */ |
| 28 | protected $workflows = []; |
| 29 | |
| 30 | /** |
| 31 | * @var ManagerGroup |
| 32 | */ |
| 33 | protected $storage; |
| 34 | |
| 35 | public function __construct( ManagerGroup $storage ) { |
| 36 | $this->storage = $storage; |
| 37 | } |
| 38 | |
| 39 | /** |
| 40 | * Accepts a result set as sent out to the CategoryViewer::doCategoryQuery |
| 41 | * hook. |
| 42 | * |
| 43 | * @param IResultWrapper|array $rows |
| 44 | */ |
| 45 | public function loadMetadataBatch( $rows ) { |
| 46 | $neededPosts = []; |
| 47 | $neededWorkflows = []; |
| 48 | foreach ( $rows as $row ) { |
| 49 | if ( $row->page_namespace != NS_TOPIC ) { |
| 50 | continue; |
| 51 | } |
| 52 | $uuid = UUID::create( strtolower( $row->page_title ) ); |
| 53 | if ( $uuid ) { |
| 54 | $alpha = $uuid->getAlphadecimal(); |
| 55 | $neededPosts[$alpha] = [ 'rev_type_id' => $uuid ]; |
| 56 | $neededWorkflows[$alpha] = $uuid; |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | if ( !$neededPosts ) { |
| 61 | return; |
| 62 | } |
| 63 | $this->posts = $this->storage->findMulti( |
| 64 | 'PostRevision', |
| 65 | $neededPosts, |
| 66 | [ 'sort' => 'rev_id', 'order' => 'DESC', 'limit' => 1 ] |
| 67 | ); |
| 68 | $workflows = $this->storage->getMulti( |
| 69 | 'Workflow', |
| 70 | $neededWorkflows |
| 71 | ); |
| 72 | // @todo fixme: these should have come back with the apropriate array |
| 73 | // key since we passed it in above, but didn't. |
| 74 | foreach ( $workflows as $workflow ) { |
| 75 | $this->workflows[$workflow->getId()->getAlphadecimal()] = $workflow; |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | public function getResult( UUID $uuid ) { |
| 80 | $alpha = $uuid->getAlphadecimal(); |
| 81 | |
| 82 | // Minimal set of data needed for the CategoryViewFormatter |
| 83 | $row = new FormatterRow; |
| 84 | if ( !isset( $this->posts[$alpha] ) ) { |
| 85 | throw new FlowException( "A required post has not been loaded: $alpha" ); |
| 86 | } |
| 87 | $row->revision = reset( $this->posts[$alpha] ); |
| 88 | if ( !isset( $this->workflows[$alpha] ) ) { |
| 89 | throw new FlowException( "A required workflow has not been loaded: $alpha" ); |
| 90 | } |
| 91 | $row->workflow = $this->workflows[$alpha]; |
| 92 | |
| 93 | return $row; |
| 94 | } |
| 95 | } |