Issues in SMW_DI_Number.php - All Issues - Inspection of "Clean-up EntityRebuildDispatcher, 1666 (#1939)" - SemanticMediaWiki/SemanticMediaWiki - Measure and Improve Code Quality continuously with Scrutinizer

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by mw

created 2016-10-23 19:51 UTC

includes/dataitems/SMW_DI_Number.php (1 issue)

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Bug 1

Severity

Minor 1

nischayn22 1

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<?php
/**
 * @ingroup SMWDataItems
 */

use SMW\DataItemException;

/**
 * This class implements number data items.
 *
 * @since 1.6
 *
 * @author Markus Krötzsch
 * @ingroup SMWDataItems
 */
class SMWDINumber extends SMWDataItem {

	/**
	 * Internal value.
	 * @var float|int
	 */
	protected $m_number;

	public function __construct( $number ) {
		if ( !is_numeric( $number ) ) {
			throw new DataItemException( "Initialization value '$number' is not a number." );
		}
		$this->m_number = $number;
	}

	public function getDIType() {
		return SMWDataItem::TYPE_NUMBER;
	}

	public function getNumber() {
		return $this->m_number;
	}

	public function getSortKey() {
		return $this->m_number;
	}

	/**
	 * @see SMWDataItem::getSortKeyDataItem()
	 * @return SMWDataItem
	 */
	public function getSortKeyDataItem() {
		return $this;
	}

	public function getSerialization() {
		return strval( $this->m_number );
	}

	/**
	 * Create a data item from the provided serialization string and type
	 * ID.
	 * @note PHP can convert any string to some number, so we do not do
	 * validation here (because this would require less efficient parsing).
	 * @return SMWDINumber
	 */
	public static function doUnserialize( $serialization ) {
		return new SMWDINumber( floatval( $serialization ) );
	}

	public function equals( SMWDataItem $di ) {
		if ( $di->getDIType() !== SMWDataItem::TYPE_NUMBER ) {
			return false;
		}

		return $di->getNumber() === $this->m_number;
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
	}

}


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includes/dataitems/SMW_DI_Number.php (1 issue)

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1		<?php
2		/**
3		* @ingroup SMWDataItems
4		*/
5
6		use SMW\DataItemException;
7
8		/**
9		* This class implements number data items.
10		*
11		* @since 1.6
12		*
13		* @author Markus Krötzsch
14		* @ingroup SMWDataItems
15		*/
16		class SMWDINumber extends SMWDataItem {
17
18		/**
19		* Internal value.
20		* @var float\|int
21		*/
22		protected $m_number;
23
24	112	public function __construct( $number ) {
25	112	if ( !is_numeric( $number ) ) {
26		throw new DataItemException( "Initialization value '$number' is not a number." );
27		}
28	112	$this->m_number = $number;
29	112	}
30
31	111	public function getDIType() {
32	111	return SMWDataItem::TYPE_NUMBER;
33		}
34
35	111	public function getNumber() {
36	111	return $this->m_number;
37		}
38
39	15	public function getSortKey() {
40	15	return $this->m_number;
41		}
42
43		/**
44		* @see SMWDataItem::getSortKeyDataItem()
45		* @return SMWDataItem
46		*/
47		public function getSortKeyDataItem() {
48		return $this;
49		}
50
51	115	public function getSerialization() {
52	115	return strval( $this->m_number );
53		}
54
55		/**
56		* Create a data item from the provided serialization string and type
57		* ID.
58		* @note PHP can convert any string to some number, so we do not do
59		* validation here (because this would require less efficient parsing).
60		* @return SMWDINumber
61		*/
62	32	public static function doUnserialize( $serialization ) {
63	32	return new SMWDINumber( floatval( $serialization ) );
64		}
65
66	5	public function equals( SMWDataItem $di ) {
67	5	if ( $di->getDIType() !== SMWDataItem::TYPE_NUMBER ) {
68	2	return false;
69		}
70
71	3	return $di->getNumber() === $this->m_number;
		0 ignored issues – show Bug introduced 2015-11-23 10:29 UTC by Report Bug Copy Issue Report Show Similar Issues like this It seems like you code against a specific sub-type and not the parent class `SMWDataItem` as the method `getNumber()` does only exist in the following sub-classes of `SMWDataItem`: `SMWDINumber`. Maybe you want to `instanceof` check for one of these explicitly? Let’s take a look at an example: abstract class User { /** @return string / abstract public function getPassword(); } class MyUser extends User { public function getPassword() { // return something } public function getDisplayName() { // return some name. } } class AuthSystem { public function authenticate(User $user) { $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName())); // do something. } } In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different sub-classes of User which does not have a getDisplayName() method, the code will break. Available Fixes Change the type-hint for the parameter: class AuthSystem { public function authenticate(MyUser $user) { / ... / } } Add an additional type-check: class AuthSystem { public function authenticate(User $user) { if ($user instanceof MyUser) { $this->logger->info(/* ... /); } // or alternatively if ( ! $user instanceof MyUser) { throw new \LogicException( '$user must be an instance of MyUser, ' .'other instances are not supported.' ); } } } Note:* PHP Analyzer uses reverse abstract interpretation to narrow down the types inside the if block in such a case. Add the method to the parent class: abstract class User { /** @return string / abstract public function getPassword(); /* @return string */ abstract public function getDisplayName(); } Loading history...
72		}
73
74		}
75

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includes/dataitems/SMW_DI_Number.php (1 issue)

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