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<?php |
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namespace Tarantool\Mapper\Plugin; |
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use Tarantool\Mapper\Entity; |
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use Tarantool\Mapper\Plugin; |
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use Tarantool\Mapper\Space; |
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class Sequence extends Plugin |
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{ |
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public function generateKey(Entity $instance, Space $space) |
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{ |
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$primary = $space->getPrimaryIndex(); |
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if (count($primary['parts']) == 1) { |
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$key = $space->getFormat()[$primary['parts'][0][0]]['name']; |
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if (!property_exists($instance, $key) || is_null($instance->$key)) { |
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$instance->$key = $this->generateValue($space); |
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} |
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} |
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} |
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public function initSchema() |
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{ |
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if (!$this->mapper->getSchema()->hasSpace('sequence')) { |
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$sequence = $this->mapper->getSchema()->createSpace('sequence'); |
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$sequence->addProperty('space', 'unsigned'); |
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$sequence->addProperty('counter', 'unsigned'); |
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$sequence->createIndex('space'); |
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} |
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} |
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public function initializeSequence($space) |
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{ |
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$this->initSchema(); |
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$spaceId = $space->getId(); |
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$entity = $this->mapper->findOne('sequence', $space->getId()); |
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if (!$entity) { |
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$query = "return box.space.".$space->getName().".index[0]:max()"; |
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$data = $this->mapper->getClient()->evaluate($query)->getData(); |
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$max = $data ? $data[0][0] : 0; |
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$entity = $this->mapper->create('sequence', [ |
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'space' => $space->getId(), |
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'counter' => $max, |
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]); |
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} |
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return $entity; |
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} |
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private function generateValue($space) |
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{ |
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$entity = $this->initializeSequence($space); |
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$this->mapper->getSchema()->getSpace('sequence') |
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->getRepository() |
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->update($entity, [['+', 'counter', 1]]); |
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return $entity->counter; |
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} |
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} |
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tarantool-php /
mapper
This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVarassignment in line 1 and the$higherassignment in line 2 are dead. The first because$myVaris never used and the second because$higheris always overwritten for every possible time line.