PPP\Wikidata\ValueFormatters\JsonLd\Entity\EntityOntology

Complexity

Total Complexity

10

Size/Duplication

Total Lines	66
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	4

Test Coverage

Coverage

100%

Importance

Changes

0

5 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	3	1
A	getEquivalentPropertiesIris()	0	3	1
A	getUnitSymbol()	0	9	2
A	getTextualContentForIri()	0	7	2
A	getTextualContentForProperty()	0	16	4

<?php

namespace PPP\Wikidata\ValueFormatters\JsonLd\Entity;

use DataValues\StringValue;
use OutOfBoundsException;
use Wikibase\DataModel\Entity\Item;
use Wikibase\DataModel\Entity\Property;
use Wikibase\DataModel\Entity\PropertyId;
use Wikibase\DataModel\Snak\PropertyValueSnak;
use Wikibase\DataModel\Statement\StatementListProvider;

/**
 * @licence AGPLv3+
 * @author Thomas Pellissier Tanon
 */
class EntityOntology {

	const OWL_EQUIVALENT_PROPERTY = 'http://www.w3.org/2002/07/owl#equivalentProperty';

	const QUDT_SYMBOL = 'http://qudt.org/schema/qudt#symbol';

	/**
	 * @var PropertyId[]
	 */
	private $propertyForIris;

	/**
	 * @param PropertyId[] $propertyForIris
	 */
	public function __construct(array $propertyForIris) {
		$this->propertyForIris = $propertyForIris;
	}

	/**
	 * @param Property $property
	 * @return string[]
	 */
	public function getEquivalentPropertiesIris(Property $property) {
		return $this->getTextualContentForIri($property, self::OWL_EQUIVALENT_PROPERTY);
	}

	/**
	 * @param Item $item
	 * @return string
	 * @throws OutOfBoundsException
	 */
	public function getUnitSymbol(Item $item) {
		$symbols = $this->getTextualContentForIri($item, self::QUDT_SYMBOL);

		if(empty($symbols)) {
			throw new OutOfBoundsException();
		} else {
			return reset($symbols);
		}
	}

	private function getTextualContentForIri(StatementListProvider $statementListProvider, $iri) {
		if(!array_key_exists($iri, $this->propertyForIris)) {
			return array();
		}

		return $this->getTextualContentForProperty($statementListProvider, $this->propertyForIris[$iri]);
	}

	private function getTextualContentForProperty(StatementListProvider $statementListProvider, PropertyId $propertyId) {
		$snaks = $statementListProvider->getStatements()->getByPropertyId($propertyId)->getBestStatements()->getMainSnaks();

		$iris = array();
		foreach($snaks as $snak) {
			if($snak instanceof PropertyValueSnak) {
				$dataValue = $snak->getDataValue();

				if($dataValue instanceof StringValue) {
					$iris[] = $snak->getDataValue()->getValue();
				}
			}
		}

		return $iris;
	}
}