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<?php |
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namespace RulerZ\Compiler\Target\Sql; |
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use Doctrine\ORM\QueryBuilder; |
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use Hoa\Ruler\Model as AST; |
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use RulerZ\Model; |
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class DoctrineQueryBuilderVisitor extends GenericSqlVisitor |
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{ |
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/** |
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* The root alias used by the query builder. |
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*/ |
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const ROOT_ALIAS_PLACEHOLDER = '@@_ROOT_ALIAS_@@'; |
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/** |
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* @var array |
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*/ |
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private $detectedJoins = []; |
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/** |
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* {@inheritdoc} |
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*/ |
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public function compile(Model\Rule $rule) |
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{ |
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$executor = parent::compile($rule); |
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$this->reset(); |
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return $executor; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function supports($target, $mode) |
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{ |
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return $target instanceof QueryBuilder; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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protected function getExecutorTraits() |
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{ |
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return [ |
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'\RulerZ\Executor\DoctrineQueryBuilder\FilterTrait', |
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'\RulerZ\Executor\DoctrineQueryBuilder\AutoJoinTrait', |
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'\RulerZ\Executor\Polyfill\FilterBasedSatisfaction', |
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]; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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protected function getCompilationData() |
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{ |
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return [ |
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'detectedJoins' => $this->detectedJoins, |
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]; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function visitModel(AST\Model $element, &$handle = null, $eldnah = null) |
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{ |
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$dql = parent::visitModel($element, $handle, $eldnah); |
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return '"' . $dql . '"'; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function visitAccess(AST\Bag\Context $element, &$handle = null, $eldnah = null) |
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{ |
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$dimensions = $element->getDimensions(); |
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// simple column access |
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if (count($dimensions) === 0) { |
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return sprintf('%s.%s', self::ROOT_ALIAS_PLACEHOLDER, parent::visitAccess($element, $handle, $eldnah)); |
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} |
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// this is the real column that we are trying to access |
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$finalColumn = array_pop($dimensions)[1]; |
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// and this is a list of tables that need to be joined |
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$tablesToJoin = array_map(function ($dimension) { |
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return $dimension[1]; |
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}, $dimensions); |
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$tablesToJoin = array_merge([$element->getId()], $tablesToJoin); |
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$this->detectedJoins[] = $tablesToJoin; |
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return sprintf('" . $this->getJoinAlias($target, "%s", "%s") . ".%s', end($tablesToJoin), implode('.', $tablesToJoin), $finalColumn); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function visitParameter(Model\Parameter $element, &$handle = null, $eldnah = null) |
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{ |
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// make it a placeholder |
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return ':' . $element->getName(); |
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} |
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protected function reset() |
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{ |
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$this->detectedJoins = []; |
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} |
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} |
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K-Phoen /
rulerz
