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<?php |
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namespace Wikibase\DataModel\Internal; |
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use Wikibase\DataModel\Facet\FacetContainer; |
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use Wikibase\DataModel\Facet\MismatchingFacetException; |
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use Wikibase\DataModel\Facet\NoSuchFacetException; |
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/** |
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* Helper object for managing facet objects. |
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* |
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* @todo This should perhaps be a trait. |
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* |
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* @since 5.0 |
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* |
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* @licence GNU GPL v2+ |
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* @author Daniel Kinzler |
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*/ |
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class FacetManager implements FacetContainer { |
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/** |
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* @var object[] Facet objects, by name. |
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*/ |
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private $facets = array(); |
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/** |
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* @see FacetContainer::hasFacet |
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* |
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* @param string $name |
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* |
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* @return boolean |
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*/ |
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public function hasFacet( $name ) { |
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return isset( $this->facets[$name] ); |
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} |
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/** |
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* @see FacetContainer::listFacets |
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* |
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* @return string[] |
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*/ |
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public function listFacets() { |
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return array_keys( $this->facets ); |
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} |
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/** |
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* @see FacetContainer::getFacet |
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* |
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* @param string $name |
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* @param string|null $type The desired type |
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* |
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* @return object |
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*/ |
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public function getFacet( $name, $type = null ) { |
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if ( !isset( $this->facets[$name] ) ) { |
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throw new NoSuchFacetException( $name ); |
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} |
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$facet = $this->facets[$name]; |
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// TODO: if $facet is callable, call it, and replace $this->facets[$name] with the result. |
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if ( $type !== null && !is_a( $facet, $type ) ) { |
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throw new MismatchingFacetException( $name, $type ); |
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} |
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return $facet; |
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} |
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/** |
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* @see FacetContainer::addFacet |
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* |
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* @param string $name |
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* @param object $facetObject |
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*/ |
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public function addFacet( $name, $facetObject ) { |
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$this->facets[$name] = $facetObject; |
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} |
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} |
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wmde /
WikibaseDataModel
