HashArray::getObjectType()

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by no

created 2016-05-20 14:35 UTC

↳ Parent: HashArray

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<?php

namespace Wikibase\DataModel;

use ArrayObject;
use Comparable;
use Hashable;
use InvalidArgumentException;
use Traversable;
use Wikibase\DataModel\Internal\MapValueHasher;

/**
 * Generic array object with lookups based on hashes of the elements.
 *
 * Elements need to implement Hashable.
 *
 * Note that by default the getHash method uses @see MapValueHashesr
 * which returns a hash based on the contents of the list, regardless
 * of order and keys.
 *
 * Also note that if the Hashable elements are mutable, any modifications
 * made to them via their mutator methods will not cause an update of
 * their associated hash in this array.
 *
 * When acceptDuplicates is set to true, multiple elements with the same
 * hash can reside in the HashArray. Lookup by such a non-unique hash will
 * return only the first element and deletion will also delete only
 * the first such element.
 *
 * @since 0.1
 *
 * @license GPL-2.0+
 * @author Jeroen De Dauw < [email protected] >
 */
abstract class HashArray extends ArrayObject implements Hashable, Comparable {

	/**
	 * Maps element hashes to their offsets.
	 *
	 * @since 0.1
	 *
	 * @var array [ element hash (string) => array [ element offset (string|int) ] | element offset (string|int) ]
	 */
	protected $offsetHashes = array();

	/**
	 * If duplicate values (based on hash) should be accepted or not.
	 *
	 * @since 0.3
	 *
	 * @var bool
	 */
	protected $acceptDuplicates = false;

	/**
	 * @var integer
	 */
	protected $indexOffset = 0;

	/**
	 * Returns the name of an interface/class that the element should implement/extend.
	 *
	 * @since 0.4
	 *
	 * @return string
	 */
	abstract public function getObjectType();

	/**
	 * @see ArrayObject::__construct
	 *
	 * @param array|Traversable|null $input
	 * @param int $flags
	 * @param string $iteratorClass
	 *
	 * @throws InvalidArgumentException
	 */
	public function __construct( $input = null, $flags = 0, $iteratorClass = 'ArrayIterator' ) {
		parent::__construct( array(), $flags, $iteratorClass );

		if ( $input !== null ) {
			if ( !is_array( $input ) && !( $input instanceof Traversable ) ) {
				throw new InvalidArgumentException( '$input must be an array or Traversable' );
			}

			foreach ( $input as $offset => $value ) {
				$this->offsetSet( $offset, $value );
			}
		}
	}

	/**
	 * Finds a new offset for when appending an element.
	 * The base class does this, so it would be better to integrate,
	 * but there does not appear to be any way to do this...
	 *
	 * @return integer
	 */
	protected function getNewOffset() {
		while ( $this->offsetExists( $this->indexOffset ) ) {
			$this->indexOffset++;
		}

		return $this->indexOffset;
	}

	/**
	 * Gets called before a new element is added to the ArrayObject.
	 *
	 * At this point the index is always set (ie not null) and the
	 * value is always of the type returned by @see getObjectType.
	 *
	 * Should return a boolean. When false is returned the element
	 * does not get added to the ArrayObject.
	 *
	 * @since 0.1
	 *
	 * @param int|string $index
	 * @param Hashable $hashable
	 *
	 * @return bool
	 */
	protected function preSetElement( $index, $hashable ) {
		$hash = $hashable->getHash();

		$hasHash = $this->hasElementHash( $hash );

		if ( !$this->acceptDuplicates && $hasHash ) {
			return false;
		}
		else {
			if ( $hasHash ) {
				if ( !is_array( $this->offsetHashes[$hash] ) ) {
					$this->offsetHashes[$hash] = array( $this->offsetHashes[$hash] );
				}

				$this->offsetHashes[$hash][] = $index;
			}
			else {
				$this->offsetHashes[$hash] = $index;
			}

			return true;
		}
	}

	/**
	 * Returns if there is an element with the provided hash.
	 *
	 * @since 0.1
	 *
	 * @param string $elementHash
	 *
	 * @return bool
	 */
	public function hasElementHash( $elementHash ) {
		return array_key_exists( $elementHash, $this->offsetHashes );
	}

	/**
	 * Returns if there is an element with the same hash as the provided element in the list.
	 *
	 * @since 0.1
	 *
	 * @param Hashable $element
	 *
	 * @return bool
	 */
	public function hasElement( Hashable $element ) {
		return $this->hasElementHash( $element->getHash() );
	}

	/**
	 * Removes the element with the hash of the provided element, if there is such an element in the list.
	 *
	 * @since 0.1
	 *
	 * @param Hashable $element
	 */
	public function removeElement( Hashable $element ) {
		$this->removeByElementHash( $element->getHash() );
	}

	/**
	 * Removes the element with the provided hash, if there is such an element in the list.
	 *
	 * @since 0.1
	 *
	 * @param string $elementHash
	 */
	public function removeByElementHash( $elementHash ) {
		if ( $this->hasElementHash( $elementHash ) ) {
			$offset = $this->offsetHashes[$elementHash];

			if ( is_array( $offset ) ) {
				$offset = reset( $offset );
			}

			$this->offsetUnset( $offset );
		}
	}

	/**
	 * Adds the provided element to the list if there is no element with the same hash yet.
	 *
	 * @since 0.1
	 *
	 * @param Hashable $element
	 *
	 * @return bool Indicates if the element was added or not.
	 */
	public function addElement( Hashable $element ) {
		$append = $this->acceptDuplicates || !$this->hasElementHash( $element->getHash() );

		if ( $append ) {
			$this->append( $element );
		}

		return $append;
	}

	/**
	 * Returns the element with the provided hash or false if there is no such element.
	 *
	 * @since 0.1
	 *
	 * @param string $elementHash
	 *
	 * @return mixed|bool
	 */
	public function getByElementHash( $elementHash ) {
		if ( $this->hasElementHash( $elementHash ) ) {
			$offset = $this->offsetHashes[$elementHash];

			if ( is_array( $offset ) ) {
				$offset = reset( $offset );
			}

			return $this->offsetGet( $offset );
		}
		else {
			return false;
		}
	}

	/**
	 * @see ArrayObject::offsetUnset
	 *
	 * @since 0.1
	 *
	 * @param mixed $index
	 */
	public function offsetUnset( $index ) {
		if ( $this->offsetExists( $index ) ) {
			/**
			 * @var Hashable $element
			 */
			$element = $this->offsetGet( $index );

			$hash = $element->getHash();

			if ( array_key_exists( $hash, $this->offsetHashes )
				&& is_array( $this->offsetHashes[$hash] )
				&& count( $this->offsetHashes[$hash] ) > 1 ) {
				$this->offsetHashes[$hash] = array_filter(
					$this->offsetHashes[$hash],
					function( $value ) use ( $index ) {
						return $value !== $index;
					}
				);
			}
			else {
				unset( $this->offsetHashes[$hash] );
			}

			parent::offsetUnset( $index );
		}
	}

	/**
	 * @see Hashable::getHash
	 *
	 * The hash is purely valuer based. Order of the elements in the array is not held into account.
	 *
	 * @since 0.1
	 *
	 * @return string
	 */
	public function getHash() {
		$hasher = new MapValueHasher();
		return $hasher->hash( $this );
	}

	/**
	 * @see Comparable::equals
	 *
	 * The comparison is done purely value based, ignoring the order of the elements in the array.
	 *
	 * @since 0.3
	 *
	 * @param mixed $target
	 *
	 * @return bool
	 */
	public function equals( $target ) {
		if ( $this === $target ) {
			return true;
		}

		return $target instanceof self
			&& $this->getHash() === $target->getHash();
	}

	/**
	 * Removes duplicates bases on hash value.
	 *
	 * @since 0.3
	 */
	public function removeDuplicates() {
		$knownHashes = array();

		/**
		 * @var Hashable $hashable
		 */
		foreach ( iterator_to_array( $this ) as $hashable ) {
			$hash = $hashable->getHash();

			if ( in_array( $hash, $knownHashes ) ) {
				$this->removeByElementHash( $hash );
			}
			else {
				$knownHashes[] = $hash;
			}
		}
	}

	/**
	 * Returns if the hash indices are up to date.
	 * For an HashArray with immutable objects this should always be the case.
	 * For one with mutable objects it's the responsibility of the mutating code
	 * to keep the indices up to date (see class documentation) and thus possible
	 * this has not been done since the last update, thus causing a state where
	 * one or more indices are out of date.
	 *
	 * @since 0.4
	 *
	 * @return bool
	 */
	public function indicesAreUpToDate() {
		foreach ( $this->offsetHashes as $hash => $offsets ) {
			$offsets = (array)$offsets;

			foreach ( $offsets as $offset ) {
				/** @var Hashable[] $this */
				if ( $this[$offset]->getHash() !== $hash ) {
					return false;
				}
			}
		}

		return true;
	}

	/**
	 * Removes and adds all elements, ensuring the indices are up to date.
	 *
	 * @since 0.4
	 */
	public function rebuildIndices() {
		$hashables = iterator_to_array( $this );

		$this->offsetHashes = array();

		foreach ( $hashables as $offset => $hashable ) {
			$this->offsetUnset( $offset );
			$this->offsetSet( $offset, $hashable );
		}
	}

	/**
	 * @see ArrayObject::append
	 *
	 * @param mixed $value
	 */
	public function append( $value ) {
		$this->setElement( null, $value );
	}

	/**
	 * @see ArrayObject::offsetSet()
	 *
	 * @param mixed $index
	 * @param mixed $value
	 */
	public function offsetSet( $index, $value ) {
		$this->setElement( $index, $value );
	}

	/**
	 * Returns if the provided value has the same type as the elements
	 * that can be added to this ArrayObject.
	 *
	 * @param mixed $value
	 *
	 * @return bool
	 */
	protected function hasValidType( $value ) {
		$class = $this->getObjectType();
		return $value instanceof $class;
	}

	/**
	 * Method that actually sets the element and holds
	 * all common code needed for set operations, including
	 * type checking and offset resolving.
	 *
	 * If you want to do additional indexing or have code that
	 * otherwise needs to be executed whenever an element is added,
	 * you can overload @see preSetElement.
	 *
	 * @param mixed $index
	 * @param mixed $value
	 *
	 * @throws InvalidArgumentException
	 */
	protected function setElement( $index, $value ) {
		if ( !$this->hasValidType( $value ) ) {
			$type = is_object( $value ) ? get_class( $value ) : gettype( $value );

			throw new InvalidArgumentException( '$value must be an instance of ' . $this->getObjectType() . '; got ' . $type );
		}

		if ( $index === null ) {
			$index = $this->getNewOffset();
		}

		if ( $this->preSetElement( $index, $value ) ) {
			parent::offsetSet( $index, $value );
class Daddy
{
    protected function getFirstName()
    {
        return "Eidur";
    }

    protected function getSurName()
    {
        return "Gudjohnsen";
    }
}

class Son
{
    public function getFirstName()
    {
        return parent::getSurname();
    }
}
		}
	}

	/**
	 * @see Serializable::serialize
	 *
	 * @return string
	 */
	public function serialize() {
		return serialize( array(
			'data' => $this->getArrayCopy(),
			'index' => $this->indexOffset,
		) );
	}

	/**
	 * @see Serializable::unserialize
	 *
	 * @param string $serialized
	 */
	public function unserialize( $serialized ) {
		$serializationData = unserialize( $serialized );

		foreach ( $serializationData['data'] as $offset => $value ) {
			// Just set the element, bypassing checks and offset resolving,
			// as these elements have already gone through this.
			parent::offsetSet( $offset, $value );
class Daddy
{
    protected function getFirstName()
    {
        return "Eidur";
    }

    protected function getSurName()
    {
        return "Gudjohnsen";
    }
}

class Son
{
    public function getFirstName()
    {
        return parent::getSurname();
    }
}
		}

		$this->indexOffset = $serializationData['index'];
	}

	/**
	 * Returns if the ArrayObject has no elements.
	 *
	 * @return bool
	 */
	public function isEmpty() {
		return !$this->getIterator()->valid();
	}

}


1			<?php
2
3			namespace Wikibase\DataModel;
4
5			use ArrayObject;
6			use Comparable;
7			use Hashable;
8			use InvalidArgumentException;
9			use Traversable;
10			use Wikibase\DataModel\Internal\MapValueHasher;
11
12			/**
13			* Generic array object with lookups based on hashes of the elements.
14			*
15			* Elements need to implement Hashable.
16			*
17			* Note that by default the getHash method uses @see MapValueHashesr
18			* which returns a hash based on the contents of the list, regardless
19			* of order and keys.
20			*
21			* Also note that if the Hashable elements are mutable, any modifications
22			* made to them via their mutator methods will not cause an update of
23			* their associated hash in this array.
24			*
25			* When acceptDuplicates is set to true, multiple elements with the same
26			* hash can reside in the HashArray. Lookup by such a non-unique hash will
27			* return only the first element and deletion will also delete only
28			* the first such element.
29			*
30			* @since 0.1
31			*
32			* @license GPL-2.0+
33			* @author Jeroen De Dauw < [email protected] >
34			*/
35			abstract class HashArray extends ArrayObject implements Hashable, Comparable {
36
37			/**
38			* Maps element hashes to their offsets.
39			*
40			* @since 0.1
41			*
42			* @var array [ element hash (string) => array [ element offset (string\|int) ] \| element offset (string\|int) ]
43			*/
44			protected $offsetHashes = array();
45
46			/**
47			* If duplicate values (based on hash) should be accepted or not.
48			*
49			* @since 0.3
50			*
51			* @var bool
52			*/
53			protected $acceptDuplicates = false;
54
55			/**
56			* @var integer
57			*/
58			protected $indexOffset = 0;
59
60			/**
61			* Returns the name of an interface/class that the element should implement/extend.
62			*
63			* @since 0.4
64			*
65			* @return string
66			*/
67			abstract public function getObjectType();
68
69			/**
70			* @see ArrayObject::__construct
71			*
72			* @param array\|Traversable\|null $input
73			* @param int $flags
74			* @param string $iteratorClass
75			*
76			* @throws InvalidArgumentException
77			*/
78			public function __construct( $input = null, $flags = 0, $iteratorClass = 'ArrayIterator' ) {
79			parent::__construct( array(), $flags, $iteratorClass );
80
81			if ( $input !== null ) {
82			if ( !is_array( $input ) && !( $input instanceof Traversable ) ) {
83			throw new InvalidArgumentException( '$input must be an array or Traversable' );
84			}
85
86			foreach ( $input as $offset => $value ) {
87			$this->offsetSet( $offset, $value );
88			}
89			}
90			}
91
92			/**
93			* Finds a new offset for when appending an element.
94			* The base class does this, so it would be better to integrate,
95			* but there does not appear to be any way to do this...
96			*
97			* @return integer
98			*/
99			protected function getNewOffset() {
100			while ( $this->offsetExists( $this->indexOffset ) ) {
101			$this->indexOffset++;
102			}
103
104			return $this->indexOffset;
105			}
106
107			/**
108			* Gets called before a new element is added to the ArrayObject.
109			*
110			* At this point the index is always set (ie not null) and the
111			* value is always of the type returned by @see getObjectType.
112			*
113			* Should return a boolean. When false is returned the element
114			* does not get added to the ArrayObject.
115			*
116			* @since 0.1
117			*
118			* @param int\|string $index
119			* @param Hashable $hashable
120			*
121			* @return bool
122			*/
123			protected function preSetElement( $index, $hashable ) {
124			$hash = $hashable->getHash();
125
126			$hasHash = $this->hasElementHash( $hash );
127
128			if ( !$this->acceptDuplicates && $hasHash ) {
129			return false;
130			}
131			else {
132			if ( $hasHash ) {
133			if ( !is_array( $this->offsetHashes[$hash] ) ) {
134			$this->offsetHashes[$hash] = array( $this->offsetHashes[$hash] );
135			}
136
137			$this->offsetHashes[$hash][] = $index;
138			}
139			else {
140			$this->offsetHashes[$hash] = $index;
141			}
142
143			return true;
144			}
145			}
146
147			/**
148			* Returns if there is an element with the provided hash.
149			*
150			* @since 0.1
151			*
152			* @param string $elementHash
153			*
154			* @return bool
155			*/
156			public function hasElementHash( $elementHash ) {
157			return array_key_exists( $elementHash, $this->offsetHashes );
158			}
159
160			/**
161			* Returns if there is an element with the same hash as the provided element in the list.
162			*
163			* @since 0.1
164			*
165			* @param Hashable $element
166			*
167			* @return bool
168			*/
169			public function hasElement( Hashable $element ) {
170			return $this->hasElementHash( $element->getHash() );
171			}
172
173			/**
174			* Removes the element with the hash of the provided element, if there is such an element in the list.
175			*
176			* @since 0.1
177			*
178			* @param Hashable $element
179			*/
180			public function removeElement( Hashable $element ) {
181			$this->removeByElementHash( $element->getHash() );
182			}
183
184			/**
185			* Removes the element with the provided hash, if there is such an element in the list.
186			*
187			* @since 0.1
188			*
189			* @param string $elementHash
190			*/
191			public function removeByElementHash( $elementHash ) {
192			if ( $this->hasElementHash( $elementHash ) ) {
193			$offset = $this->offsetHashes[$elementHash];
194
195			if ( is_array( $offset ) ) {
196			$offset = reset( $offset );
197			}
198
199			$this->offsetUnset( $offset );
200			}
201			}
202
203			/**
204			* Adds the provided element to the list if there is no element with the same hash yet.
205			*
206			* @since 0.1
207			*
208			* @param Hashable $element
209			*
210			* @return bool Indicates if the element was added or not.
211			*/
212			public function addElement( Hashable $element ) {
213			$append = $this->acceptDuplicates \|\| !$this->hasElementHash( $element->getHash() );
214
215			if ( $append ) {
216			$this->append( $element );
217			}
218
219			return $append;
220			}
221
222			/**
223			* Returns the element with the provided hash or false if there is no such element.
224			*
225			* @since 0.1
226			*
227			* @param string $elementHash
228			*
229			* @return mixed\|bool
230			*/
231			public function getByElementHash( $elementHash ) {
232			if ( $this->hasElementHash( $elementHash ) ) {
233			$offset = $this->offsetHashes[$elementHash];
234
235			if ( is_array( $offset ) ) {
236			$offset = reset( $offset );
237			}
238
239			return $this->offsetGet( $offset );
240			}
241			else {
242			return false;
243			}
244			}
245
246			/**
247			* @see ArrayObject::offsetUnset
248			*
249			* @since 0.1
250			*
251			* @param mixed $index
252			*/
253			public function offsetUnset( $index ) {
254			if ( $this->offsetExists( $index ) ) {
255			/**
256			* @var Hashable $element
257			*/
258			$element = $this->offsetGet( $index );
259
260			$hash = $element->getHash();
261
262			if ( array_key_exists( $hash, $this->offsetHashes )
263			&& is_array( $this->offsetHashes[$hash] )
264			&& count( $this->offsetHashes[$hash] ) > 1 ) {
265			$this->offsetHashes[$hash] = array_filter(
266			$this->offsetHashes[$hash],
267			function( $value ) use ( $index ) {
268			return $value !== $index;
269			}
270			);
271			}
272			else {
273			unset( $this->offsetHashes[$hash] );
274			}
275
276			parent::offsetUnset( $index );
277			}
278			}
279
280			/**
281			* @see Hashable::getHash
282			*
283			* The hash is purely valuer based. Order of the elements in the array is not held into account.
284			*
285			* @since 0.1
286			*
287			* @return string
288			*/
289			public function getHash() {
290			$hasher = new MapValueHasher();
291			return $hasher->hash( $this );
292			}
293
294			/**
295			* @see Comparable::equals
296			*
297			* The comparison is done purely value based, ignoring the order of the elements in the array.
298			*
299			* @since 0.3
300			*
301			* @param mixed $target
302			*
303			* @return bool
304			*/
305			public function equals( $target ) {
306			if ( $this === $target ) {
307			return true;
308			}
309
310			return $target instanceof self
311			&& $this->getHash() === $target->getHash();
312			}
313
314			/**
315			* Removes duplicates bases on hash value.
316			*
317			* @since 0.3
318			*/
319			public function removeDuplicates() {
320			$knownHashes = array();
321
322			/**
323			* @var Hashable $hashable
324			*/
325			foreach ( iterator_to_array( $this ) as $hashable ) {
326			$hash = $hashable->getHash();
327
328			if ( in_array( $hash, $knownHashes ) ) {
329			$this->removeByElementHash( $hash );
330			}
331			else {
332			$knownHashes[] = $hash;
333			}
334			}
335			}
336
337			/**
338			* Returns if the hash indices are up to date.
339			* For an HashArray with immutable objects this should always be the case.
340			* For one with mutable objects it's the responsibility of the mutating code
341			* to keep the indices up to date (see class documentation) and thus possible
342			* this has not been done since the last update, thus causing a state where
343			* one or more indices are out of date.
344			*
345			* @since 0.4
346			*
347			* @return bool
348			*/
349			public function indicesAreUpToDate() {
350			foreach ( $this->offsetHashes as $hash => $offsets ) {
351			$offsets = (array)$offsets;
352
353			foreach ( $offsets as $offset ) {
354			/** @var Hashable[] $this */
355			if ( $this[$offset]->getHash() !== $hash ) {
356			return false;
357			}
358			}
359			}
360
361			return true;
362			}
363
364			/**
365			* Removes and adds all elements, ensuring the indices are up to date.
366			*
367			* @since 0.4
368			*/
369			public function rebuildIndices() {
370			$hashables = iterator_to_array( $this );
371
372			$this->offsetHashes = array();
373
374			foreach ( $hashables as $offset => $hashable ) {
375			$this->offsetUnset( $offset );
376			$this->offsetSet( $offset, $hashable );
377			}
378			}
379
380			/**
381			* @see ArrayObject::append
382			*
383			* @param mixed $value
384			*/
385			public function append( $value ) {
386			$this->setElement( null, $value );
387			}
388
389			/**
390			* @see ArrayObject::offsetSet()
391			*
392			* @param mixed $index
393			* @param mixed $value
394			*/
395			public function offsetSet( $index, $value ) {
396			$this->setElement( $index, $value );
397			}
398
399			/**
400			* Returns if the provided value has the same type as the elements
401			* that can be added to this ArrayObject.
402			*
403			* @param mixed $value
404			*
405			* @return bool
406			*/
407			protected function hasValidType( $value ) {
408			$class = $this->getObjectType();
409			return $value instanceof $class;
410			}
411
412			/**
413			* Method that actually sets the element and holds
414			* all common code needed for set operations, including
415			* type checking and offset resolving.
416			*
417			* If you want to do additional indexing or have code that
418			* otherwise needs to be executed whenever an element is added,
419			* you can overload @see preSetElement.
420			*
421			* @param mixed $index
422			* @param mixed $value
423			*
424			* @throws InvalidArgumentException
425			*/
426			protected function setElement( $index, $value ) {
427			if ( !$this->hasValidType( $value ) ) {
428			$type = is_object( $value ) ? get_class( $value ) : gettype( $value );
429
430			throw new InvalidArgumentException( '$value must be an instance of ' . $this->getObjectType() . '; got ' . $type );
431			}
432
433			if ( $index === null ) {
434			$index = $this->getNewOffset();
435			}
436
437			if ( $this->preSetElement( $index, $value ) ) {
438			parent::offsetSet( $index, $value );
			0 ignored issues – show Comprehensibility Bug introduced 2015-11-27 17:36 UTC by Report Bug Copy Issue Report It seems like you call parent on a different method (`offsetSet()` instead of `setElement()`). Are you sure this is correct? If so, you might want to change this to `$this->offsetSet()`. This check looks for a call to a parent method whose name is different than the method from which it is called. Consider the following code: class Daddy { protected function getFirstName() { return "Eidur"; } protected function getSurName() { return "Gudjohnsen"; } } class Son { public function getFirstName() { return parent::getSurname(); } } The `getFirstName()` method in the `Son` calls the wrong method in the parent class. Loading history...
439			}
440			}
441
442			/**
443			* @see Serializable::serialize
444			*
445			* @return string
446			*/
447			public function serialize() {
448			return serialize( array(
449			'data' => $this->getArrayCopy(),
450			'index' => $this->indexOffset,
451			) );
452			}
453
454			/**
455			* @see Serializable::unserialize
456			*
457			* @param string $serialized
458			*/
459			public function unserialize( $serialized ) {
460			$serializationData = unserialize( $serialized );
461
462			foreach ( $serializationData['data'] as $offset => $value ) {
463			// Just set the element, bypassing checks and offset resolving,
464			// as these elements have already gone through this.
465			parent::offsetSet( $offset, $value );
			0 ignored issues – show Comprehensibility Bug introduced 2015-11-27 17:36 UTC by Report Bug Copy Issue Report It seems like you call parent on a different method (`offsetSet()` instead of `unserialize()`). Are you sure this is correct? If so, you might want to change this to `$this->offsetSet()`. This check looks for a call to a parent method whose name is different than the method from which it is called. Consider the following code: class Daddy { protected function getFirstName() { return "Eidur"; } protected function getSurName() { return "Gudjohnsen"; } } class Son { public function getFirstName() { return parent::getSurname(); } } The `getFirstName()` method in the `Son` calls the wrong method in the parent class. Loading history...
466			}
467
468			$this->indexOffset = $serializationData['index'];
469			}
470
471			/**
472			* Returns if the ArrayObject has no elements.
473			*
474			* @return bool
475			*/
476			public function isEmpty() {
477			return !$this->getIterator()->valid();
478			}
479
480			}
481

wmde / WikibaseDataModel

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