Mo Elzubeir
76 lines
2.2 KiB
PHP
76 lines
2.2 KiB
PHP
<?php
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namespace Common\Util\Processor\ExpressionLanguage\Provider;
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use Doctrine\ORM\EntityManagerInterface;
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use Doctrine\ORM\Mapping\ClassMetadataInfo;
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use Symfony\Component\ExpressionLanguage\ExpressionFunction;
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use Symfony\Component\ExpressionLanguage\ExpressionFunctionProviderInterface;
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/**
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* Class EntityGetterProvider
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* Register function like 'getUser' or 'getStoredQuery' for fetching single
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* entity from database.
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*
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* @package Common\Util\Processor\ExpressionLanguage\Provider
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*
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*/
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class EntityGetterProvider implements ExpressionFunctionProviderInterface
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{
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/**
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* @var EntityManagerInterface
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*/
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private $em;
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/**
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* EntityGetterProvider constructor.
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*
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* @param EntityManagerInterface $em A EntityManagerInterface instance.
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*/
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public function __construct(EntityManagerInterface $em)
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{
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$this->em = $em;
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}
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/**
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* @return ExpressionFunction[] An array of Function instances.
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*/
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public function getFunctions()
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{
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/**
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* Dummy compiler.
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* We use this expression function only in runtime and not compile its.
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*/
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$compiler = function () {
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};
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$functions = [];
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/** @var ClassMetadataInfo[] $metadataList */
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$metadataList = $this->em->getMetadataFactory()->getAllMetadata();
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foreach ($metadataList as $metadata) {
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$name = $metadata->getName();
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$shortName = substr($name, strrpos($name, '\\') + 1);
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$fnName = 'get'. $shortName;
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if (strpos($name, 'Entity\\'. $shortName) === false) {
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// Process only entities inside 'Entity' directory.
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continue;
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}
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/**
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* @param mixed $arguments Arguments specified by expression language
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* @param array $criteria Search criteria.
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*
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* @return null|object Found entity or null.
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*/
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$evaluator = function ($arguments, array $criteria) use ($name) {
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return $this->em->getRepository($name)->findOneBy($criteria);
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};
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$functions[] = new ExpressionFunction($fnName, $compiler, $evaluator);
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}
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return $functions;
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}
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}
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