Wikibase\DataModel\Snak\SnakObject

Complexity

Total Complexity

17

Size/Duplication

Total Lines	128
Duplicated Lines	0 %

Coupling/Cohesion

Components	0
Dependencies	2

Test Coverage

Coverage

78.13%

Importance

Changes	2
Bugs	0	Features	0

7 Methods

Rating	Name	Duplication	Size	Complexity
A	getPropertyId()	0	3	1
A	getHash()	0	3	1
A	equals()	0	9	4
A	serialize()	0	3	1
A	unserialize()	0	3	1
B	__construct()	0	19	5
A	newPropertyId()	0	21	4

<?php

namespace Wikibase\DataModel\Snak;

use InvalidArgumentException;
use Wikibase\DataModel\Entity\EntityId;
use Wikibase\DataModel\Entity\Property;
use Wikibase\DataModel\Entity\PropertyId;

/**
 * Base class for snaks.
 * See https://www.mediawiki.org/wiki/Wikibase/DataModel#Snaks
 *
 * @since 0.1
 *
 * @license GPL-2.0+
 * @author Jeroen De Dauw < jeroendedauw@gmail.com >
 */
abstract class SnakObject implements Snak {

	/**
	 * @since 0.1
	 *
	 * @var PropertyId
	 */
	protected $propertyId;

	/**
	 * Support for passing in an EntityId instance that is not a PropertyId instance has
	 * been deprecated since 0.5.
	 *
	 * @since 0.1
	 *
	 * @param PropertyId|EntityId|int $propertyId
	 *
	 * @throws InvalidArgumentException
	 */
	public function __construct( $propertyId ) {
		if ( is_int( $propertyId ) ) {
			$propertyId = PropertyId::newFromNumber( $propertyId );
		}

		if ( !( $propertyId instanceof EntityId ) ) {
			throw new InvalidArgumentException( '$propertyId must be an instance of EntityId' );
		}

		if ( $propertyId->getEntityType() !== Property::ENTITY_TYPE ) {
			throw new InvalidArgumentException( '$propertyId must have an entityType of ' . Property::ENTITY_TYPE );
		}

		if ( !( $propertyId instanceof PropertyId ) ) {
			$propertyId = new PropertyId( $propertyId->getSerialization() );
		}

		$this->propertyId = $propertyId;
	}

	/**
	 * @see PropertyIdProvider::getPropertyId
	 *
	 * @since 0.1
	 *
	 * @return PropertyId
	 */
	public function getPropertyId() {
		return $this->propertyId;
	}

	/**
	 * @see Hashable::getHash
	 *
	 * @return string
	 */
	public function getHash() {
		return sha1( serialize( $this ) );
	}

	/**
	 * @see Comparable::equals
	 *
	 * @since 0.3
	 *
	 * @param mixed $target
	 *
	 * @return bool
	 */
	public function equals( $target ) {
		if ( $this === $target ) {
			return true;
		}

		return is_object( $target )
			&& get_called_class() === get_class( $target )
			&& $this->getHash() === $target->getHash();
	}

	/**
	 * @see Serializable::serialize
	 *
	 * @since 0.1
	 *
	 * @return string
	 */
	public function serialize() {
		return $this->propertyId->getSerialization();
	}

	/**
	 * @see Serializable::unserialize
	 *
	 * @since 0.1
	 *
	 * @param string $serialized
	 */
	public function unserialize( $serialized ) {
		$this->propertyId = self::newPropertyId( $serialized );
	}

	/**
	 * @param string $serialized
	 *
	 * @return PropertyId
	 */
	protected static function newPropertyId( $serialized ) {
		if ( is_int( $serialized ) ) {
			// numeric id, already unserialized
			return PropertyId::newFromNumber( $serialized );
		}

		try {
			// full ID, as a string, not serialized
			return new PropertyId( $serialized );
		} catch ( InvalidArgumentException $ex ) {
			// noop
		}

		$unserialized = unserialize( $serialized );
		if ( is_int( $unserialized ) ) {
			// numeric id, not previously unserialized
			return PropertyId::newFromNumber( $unserialized );
		} else {
			throw new InvalidArgumentException( 'unexpected property ID serialization' );
		}
	}

}