96 lines
2.4 KiB
PHP
96 lines
2.4 KiB
PHP
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<?php
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namespace DigiComp\Sequence\Service;
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/* *
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* This script belongs to the FLOW3 package "DigiComp.Sequence". *
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* *
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* */
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use Doctrine\DBAL\DBALException;
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use TYPO3\Flow\Annotations as Flow;
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/**
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* A SequenceNumber generator (should be DB-agnostic)
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*
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* @Flow\Scope("singleton")
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*/
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class SequenceGenerator {
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/**
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* @var \Doctrine\Common\Persistence\ObjectManager
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* @Flow\Inject
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*/
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protected $_em;
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/**
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* @var \TYPO3\Flow\Reflection\ReflectionService
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* @Flow\Inject
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*/
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protected $reflectionService;
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/**
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* @var \TYPO3\Flow\Log\SystemLoggerInterface
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* @Flow\Inject
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*/
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protected $systemLogger;
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/**
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* @param string|object $type
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* @throws \DigiComp\Sequence\Service\Exception
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* @return int
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*/
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public function getNextNumberFor($type) {
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if (is_object($type)) {
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$type = $this->reflectionService->getClassNameByObject($type);
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}
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if (!$type) {
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throw new Exception('No Type given');
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}
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$count = $this->getLastNumberFor($type);
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//TODO: Check for maximal tries, or similar
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do {
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$count = $count+1;
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} while (! $this->validateFreeNumber($count, $type));
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return $count;
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}
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protected function validateFreeNumber($count, $type) {
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$em = $this->_em;
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/** @var $em \Doctrine\ORM\EntityManager */
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try {
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$em->getConnection()->insert('digicomp_sequence_domain_model_insert', array('number' => $count, 'type' => $type));
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return true;
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} catch (\PDOException $e) {
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return false;
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} catch (DBALException $e) {
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if ($e->getPrevious() && $e->getPrevious() instanceof \PDOException) {
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// Do nothing, new Doctrine handling hides the above error
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} else {
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$this->systemLogger->logException($e);
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}
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} catch (\Exception $e) {
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$this->systemLogger->logException($e);
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}
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return false;
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}
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public function advanceTo($to, $type) {
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return ($this->validateFreeNumber($to, $type));
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}
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/**
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* @param $type
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* @return int
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*/
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public function getLastNumberFor($type) {
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/** @var $em \Doctrine\ORM\EntityManager */
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$em = $this->_em;
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$result = $em->getConnection()->executeQuery('SELECT MAX(number) AS count FROM digicomp_sequence_domain_model_insert WHERE type=:type', array('type' => $type));
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$count = $result->fetchAll();
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$count = $count[0]['count'];
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return $count;
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}
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}
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