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| 1 | <?php |
| 2 | |
| 3 | namespace WikibaseQuality\ConstraintReport; |
| 4 | |
| 5 | use Wikibase\DataModel\Entity\NumericPropertyId; |
| 6 | |
| 7 | /** |
| 8 | * A ConstraintLookup that caches the results of another lookup in memory |
| 9 | * (by storing the constraint array per property ID in a big array). |
| 10 | * |
| 11 | * @author Lucas Werkmeister |
| 12 | * @license GPL-2.0-or-later |
| 13 | */ |
| 14 | class CachingConstraintLookup implements ConstraintLookup { |
| 15 | |
| 16 | /** |
| 17 | * @var ConstraintLookup |
| 18 | */ |
| 19 | private $lookup; |
| 20 | |
| 21 | /** |
| 22 | * @var Constraint[][] |
| 23 | */ |
| 24 | private $cache = []; |
| 25 | |
| 26 | /** |
| 27 | * @param ConstraintLookup $lookup The lookup to which all queries are delegated. |
| 28 | */ |
| 29 | public function __construct( ConstraintLookup $lookup ) { |
| 30 | $this->lookup = $lookup; |
| 31 | } |
| 32 | |
| 33 | /** |
| 34 | * @param NumericPropertyId $propertyId |
| 35 | * |
| 36 | * @return Constraint[] |
| 37 | */ |
| 38 | public function queryConstraintsForProperty( NumericPropertyId $propertyId ) { |
| 39 | $id = $propertyId->getSerialization(); |
| 40 | if ( !array_key_exists( $id, $this->cache ) ) { |
| 41 | $this->cache[$id] = $this->lookup->queryConstraintsForProperty( $propertyId ); |
| 42 | } |
| 43 | return $this->cache[$id]; |
| 44 | } |
| 45 | |
| 46 | } |