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<?php |
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namespace Storeman; |
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use Storeman\Exception\Exception; |
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class SynchronizationList implements \Countable, \IteratorAggregate |
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{ |
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/** |
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* Chronologically ordered list of synchronizations (earliest to latest). |
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* |
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* @var Synchronization[] |
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*/ |
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protected $synchronizations = []; |
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/** |
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* @param Synchronization[] $synchronizations |
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*/ |
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public function __construct(array $synchronizations = []) |
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{ |
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foreach ($synchronizations as $synchronization) |
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{ |
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$this->addSynchronization($synchronization); |
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} |
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} |
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/** |
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* @param Synchronization $synchronization |
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* |
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* @return SynchronizationList |
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* @throws Exception |
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*/ |
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public function addSynchronization(Synchronization $synchronization): SynchronizationList |
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{ |
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if (isset($this->synchronizations[$synchronization->getRevision()])) |
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{ |
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throw new Exception(); |
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} |
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$this->synchronizations[$synchronization->getRevision()] = $synchronization; |
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return $this; |
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} |
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/** |
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* Returns the synchronization with the highest revision. |
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* |
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* @return Synchronization |
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*/ |
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public function getLastSynchronization(): ?Synchronization |
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{ |
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if ($this->synchronizations) |
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{ |
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return $this->synchronizations[max(array_keys($this->synchronizations))]; |
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} |
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return null; |
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} |
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/** |
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* @param int $revision |
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* |
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* @return Synchronization |
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*/ |
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public function getSynchronizationByRevision(int $revision): ?Synchronization |
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{ |
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return isset($this->synchronizations[$revision]) ? $this->synchronizations[$revision] : null; |
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} |
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/** |
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* Returns the synchronization that was the current one for the given datetime. |
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* |
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* @param \DateTime $time |
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* |
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* @return Synchronization |
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*/ |
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public function getSynchronizationByTime(\DateTime $time): ?Synchronization |
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{ |
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$current = null; |
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foreach ($this->synchronizations as $synchronization) |
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{ |
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if ($synchronization->getTime() > $time) |
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{ |
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break; |
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} |
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$current = $synchronization; |
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} |
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return $current; |
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} |
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/** |
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* Returns new synchronization list containing only those synchronizations that were performed by the given identity. |
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* |
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* @param string $identity |
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* @return SynchronizationList |
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*/ |
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public function getSynchronizationsByIdentity(string $identity): SynchronizationList |
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{ |
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return new static(array_filter(iterator_to_array($this->getIterator()), function(Synchronization $synchronization) use ($identity) { |
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return $synchronization->getIdentity() === $identity; |
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})); |
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} |
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/** |
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* Returns set of revisions contained in this list. |
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* |
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* @return int[] |
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*/ |
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public function getRevisions(): array |
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{ |
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return array_values(array_map(function(Synchronization $synchronization) { |
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return $synchronization->getRevision(); |
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}, iterator_to_array($this->getIterator()))); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function count(): int |
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{ |
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return count($this->synchronizations); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getIterator(): \Traversable |
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{ |
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return new \ArrayIterator($this->synchronizations); |
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} |
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} |
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storeman-io /
storeman
This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)or! empty(...)instead.