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<?php |
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namespace Wikibase\DataModel\Term; |
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use ArrayIterator; |
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use Countable; |
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use InvalidArgumentException; |
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use IteratorAggregate; |
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use OutOfBoundsException; |
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use Traversable; |
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/** |
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* Unordered list of AliasGroup objects. |
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* Only one group per language code. If multiple groups with the same language code |
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* are provided, only the last one will be retained. |
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* |
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* Empty groups are not stored. |
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* |
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* @since 0.7.3 |
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* |
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* @license GPL-2.0+ |
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* @author Jeroen De Dauw < [email protected] > |
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*/ |
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class AliasGroupList implements Countable, IteratorAggregate { |
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/** |
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* @var AliasGroup[] |
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*/ |
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private $groups = []; |
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/** |
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* @param AliasGroup[] $aliasGroups |
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* @throws InvalidArgumentException |
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*/ |
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public function __construct( array $aliasGroups = [] ) { |
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foreach ( $aliasGroups as $aliasGroup ) { |
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if ( !( $aliasGroup instanceof AliasGroup ) ) { |
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throw new InvalidArgumentException( 'Every element in $aliasGroups must be an instance of AliasGroup' ); |
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} |
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$this->setGroup( $aliasGroup ); |
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} |
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} |
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/** |
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* @see Countable::count |
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* @return int |
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*/ |
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public function count() { |
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return count( $this->groups ); |
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} |
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/** |
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* @see IteratorAggregate::getIterator |
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* @return Traversable|AliasGroup[] |
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*/ |
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public function getIterator() { |
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return new ArrayIterator( $this->groups ); |
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} |
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/** |
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* The array keys are the language codes of their associated AliasGroup. |
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* |
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* @since 2.3 |
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* |
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* @return AliasGroup[] Array indexed by language code. |
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*/ |
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public function toArray() { |
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return $this->groups; |
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} |
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/** |
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* @param string $languageCode |
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* |
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* @return AliasGroup |
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* @throws OutOfBoundsException |
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*/ |
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public function getByLanguage( $languageCode ) { |
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if ( !array_key_exists( $languageCode, $this->groups ) ) { |
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throw new OutOfBoundsException( 'AliasGroup with languageCode "' . $languageCode . '" not found' ); |
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} |
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return $this->groups[$languageCode]; |
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} |
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/** |
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* @since 2.5 |
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* |
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* @param string[] $languageCodes |
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* |
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* @return self |
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*/ |
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public function getWithLanguages( array $languageCodes ) { |
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return new self( array_intersect_key( $this->groups, array_flip( $languageCodes ) ) ); |
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} |
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/** |
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* @param string $languageCode |
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*/ |
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public function removeByLanguage( $languageCode ) { |
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unset( $this->groups[$languageCode] ); |
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} |
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/** |
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* If the group is empty, it will not be stored. |
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* In case the language of that group had an associated group, that group will be removed. |
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* |
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* @param AliasGroup $group |
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*/ |
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public function setGroup( AliasGroup $group ) { |
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if ( $group->isEmpty() ) { |
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unset( $this->groups[$group->getLanguageCode()] ); |
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} |
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else { |
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$this->groups[$group->getLanguageCode()] = $group; |
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} |
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} |
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/** |
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* @see Comparable::equals |
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* |
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* @since 0.7.4 |
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* |
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* @param mixed $target |
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* |
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* @return bool |
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*/ |
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public function equals( $target ) { |
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if ( $this === $target ) { |
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return true; |
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} |
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if ( !( $target instanceof self ) |
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|| $this->count() !== $target->count() |
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) { |
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return false; |
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} |
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foreach ( $this->groups as $group ) { |
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if ( !$target->hasAliasGroup( $group ) ) { |
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return false; |
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} |
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} |
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return true; |
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} |
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/** |
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* @since 2.4.0 |
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* |
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* @return bool |
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*/ |
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public function isEmpty() { |
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return empty( $this->groups ); |
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} |
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/** |
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* @since 0.7.4 |
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* |
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* @param AliasGroup $group |
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* |
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* @return boolean |
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*/ |
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public function hasAliasGroup( AliasGroup $group ) { |
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return array_key_exists( $group->getLanguageCode(), $this->groups ) |
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&& $this->groups[$group->getLanguageCode()]->equals( $group ); |
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} |
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/** |
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* @since 0.8 |
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* |
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* @param string $languageCode |
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* |
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* @return boolean |
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*/ |
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public function hasGroupForLanguage( $languageCode ) { |
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return array_key_exists( $languageCode, $this->groups ); |
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} |
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/** |
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* @since 0.8 |
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* |
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* @param string $languageCode |
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* @param string[] $aliases |
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*/ |
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public function setAliasesForLanguage( $languageCode, array $aliases ) { |
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$this->setGroup( new AliasGroup( $languageCode, $aliases ) ); |
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} |
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/** |
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* Returns an array with language codes as keys the aliases as array values. |
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* |
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* @since 2.5 |
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* |
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* @return array[] |
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*/ |
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public function toTextArray() { |
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$array = []; |
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foreach ( $this->groups as $group ) { |
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$array[$group->getLanguageCode()] = $group->getAliases(); |
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} |
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return $array; |
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} |
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/** |
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* Removes all alias groups from this list. |
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* |
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* @since 7.0 |
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*/ |
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public function clear() { |
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$this->groups = []; |
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} |
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} |
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