RevisionGetter::newRevisionFromResult()   A
last analyzed

Complexity

Conditions 2
Paths 2

Size

Total Lines 13

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 10
CRAP Score 2.003

Importance

Changes 0
Metric Value
dl 0
loc 13
rs 9.8333
c 0
b 0
f 0
ccs 10
cts 11
cp 0.9091
cc 2
nc 2
nop 1
crap 2.003
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<?php
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namespace Wikibase\Api\Service;
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use Deserializers\Deserializer;
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use Mediawiki\Api\MediawikiApi;
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use Mediawiki\Api\SimpleRequest;
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use Mediawiki\DataModel\PageIdentifier;
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use Mediawiki\DataModel\Revision;
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use RuntimeException;
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use Wikibase\DataModel\Entity\EntityId;
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use Wikibase\DataModel\Entity\Item;
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use Wikibase\DataModel\Entity\Property;
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use Wikibase\DataModel\ItemContent;
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use Wikibase\DataModel\PropertyContent;
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use Wikibase\DataModel\SiteLink;
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/**
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 * @access private
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 *
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 * @author Addshore
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 */
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class RevisionGetter {
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	/**
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	 * @var MediawikiApi
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	 */
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	protected $api;
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	/**
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	 * @var Deserializer
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	 */
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	protected $entityDeserializer;
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	/**
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	 * @param MediawikiApi $api
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	 * @param Deserializer $entityDeserializer
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	 */
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	public function __construct( MediawikiApi $api, Deserializer $entityDeserializer ) {
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		$this->api = $api;
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		$this->entityDeserializer = $entityDeserializer;
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	}
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	/**
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	 * @since 0.1
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	 * @param string|EntityId $id
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	 * @return Revision
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	 */
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	public function getFromId( $id ) {
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		if ( $id instanceof EntityId ) {
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			$id = $id->getSerialization();
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		}
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		$result = $this->api->getRequest( new SimpleRequest( 'wbgetentities', [ 'ids' => $id ] ) );
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		return $this->newRevisionFromResult( array_shift( $result['entities'] ) );
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	}
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	/**
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	 * @since 0.1
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	 * @param SiteLink $siteLink
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	 * @return Revision
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	 */
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	public function getFromSiteLink( SiteLink $siteLink ) {
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		$result = $this->api->getRequest( new SimpleRequest(
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			'wbgetentities',
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			[ 'sites' => $siteLink->getSiteId(), 'titles' => $siteLink->getPageName() ]
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		) );
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		return $this->newRevisionFromResult( array_shift( $result['entities'] ) );
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	}
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	/**
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	 * @since 0.1
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	 * @param string $siteId
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	 * @param string $title
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	 * @return Revision
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	 */
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	public function getFromSiteAndTitle( $siteId, $title ) {
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		$result = $this->api->getRequest( new SimpleRequest(
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			'wbgetentities',
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			[ 'sites' => $siteId, 'titles' => $title ]
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		) );
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		return $this->newRevisionFromResult( array_shift( $result['entities'] ) );
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	}
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	/**
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	 * @param array $entityResult
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	 * @return Revision
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	 * @todo this could be factored into a different class?
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	 */
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	private function newRevisionFromResult( array $entityResult ) {
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		if ( array_key_exists( 'missing', $entityResult ) ) {
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			return false; // Throw an exception?
0 ignored issues
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Bug Best Practice introduced by
The return type of return false; (false) is incompatible with the return type documented by Wikibase\Api\Service\Rev...::newRevisionFromResult of type Mediawiki\DataModel\Revision.

If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design.

Let’s take a look at an example:

class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}

Our function my_function expects a Post object, and outputs the author of the post. The base class Post returns a simple string and outputting a simple string will work just fine. However, the child class BlogPost which is a sub-type of Post instead decided to return an object, and is therefore violating the SOLID principles. If a BlogPost were passed to my_function, PHP would not complain, but ultimately fail when executing the strtoupper call in its body.

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		}
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		return new Revision(
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			$this->getContentFromEntity( $this->entityDeserializer->deserialize( $entityResult ) ),
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			new PageIdentifier( null, intval( $entityResult['pageid'] ) ),
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			$entityResult['lastrevid'],
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			null,
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			null,
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			$entityResult['modified']
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		);
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	}
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	/**
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	 * @param Item|Property $entity
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	 *
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	 * @throws RuntimeException
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	 * @return ItemContent|PropertyContent
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	 * @todo this could be factored into a different class?
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	 */
111 2 View Code Duplication
	private function getContentFromEntity( $entity ) {
0 ignored issues
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Duplication introduced by
This method seems to be duplicated in your project.

Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.

You can also find more detailed suggestions in the “Code” section of your repository.

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112 2
		switch ( $entity->getType() ) {
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			case Item::ENTITY_TYPE:
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				return new ItemContent( $entity );
0 ignored issues
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Bug introduced by
It seems like $entity defined by parameter $entity on line 111 can also be of type object<Wikibase\DataModel\Entity\Property>; however, Wikibase\DataModel\ItemContent::__construct() does only seem to accept object<Wikibase\DataModel\Entity\Item>, maybe add an additional type check?

This check looks at variables that have been passed in as parameters and are passed out again to other methods.

If the outgoing method call has stricter type requirements than the method itself, an issue is raised.

An additional type check may prevent trouble.

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115
			case Property::ENTITY_TYPE:
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				return new PropertyContent( $entity );
0 ignored issues
show
Bug introduced by
It seems like $entity defined by parameter $entity on line 111 can also be of type object<Wikibase\DataModel\Entity\Item>; however, Wikibase\DataModel\PropertyContent::__construct() does only seem to accept object<Wikibase\DataModel\Entity\Property>, maybe add an additional type check?

This check looks at variables that have been passed in as parameters and are passed out again to other methods.

If the outgoing method call has stricter type requirements than the method itself, an issue is raised.

An additional type check may prevent trouble.

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			default:
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				throw new RuntimeException( 'I cant get a content for this type of entity' );
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		}
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	}
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}
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