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<?php |
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/** |
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* FilterQuery.php |
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* |
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* @since 19/01/17 |
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* @author gseidel |
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*/ |
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namespace Enhavo\Bundle\AppBundle\Filter; |
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use Doctrine\ORM\EntityManagerInterface; |
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use Doctrine\ORM\QueryBuilder; |
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use Enhavo\Bundle\AppBundle\Exception\FilterException; |
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class FilterQuery |
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{ |
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const OPERATOR_EQUALS = '='; |
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const OPERATOR_GREATER = '>'; |
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const OPERATOR_LESS = '<'; |
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const OPERATOR_GREATER_EQUAL = '>='; |
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const OPERATOR_LESS_EQUAL = '<='; |
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const OPERATOR_NOT = '!='; |
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const OPERATOR_LIKE = 'like'; |
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const OPERATOR_START_LIKE = 'start_like'; |
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const OPERATOR_END_LIKE = 'end_like'; |
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const OPERATOR_IN = 'in'; |
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const ORDER_ASC = 'asc'; |
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const ORDER_DESC = 'desc'; |
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const HYDRATE_OBJECT = 'object'; |
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const HYDRATE_ID = 'id'; |
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const UNIQUE_PARAMETER_PREFIX = 'qohbmrxo'; // This is a random sequence of 8 characters generated by a password generator. |
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// It's added to join aliases and parameter names to avoid easily guessable names |
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// that might accidentally be duplicated by someone in the callback function. |
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/** |
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* @var array |
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*/ |
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private $where = []; |
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/** |
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* @var FilterQueryOr[] |
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*/ |
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private $orBlocks = []; |
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/** |
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* @var array |
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*/ |
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private $orderBy = []; |
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/** |
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* @var array |
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*/ |
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private $callbacks = []; |
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/** |
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* @var QueryBuilder |
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*/ |
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private $queryBuilder; |
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/** |
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* @var string |
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*/ |
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private $alias; |
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/** |
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* @var string |
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*/ |
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private $hydrate; |
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/** |
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* @var bool |
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*/ |
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private $paginated = true; |
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public function __construct(EntityManagerInterface $em, $class, $alias = 'a') |
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{ |
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if(strlen($alias) != 1) { |
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throw new \InvalidArgumentException('Alias should be a single letter'); |
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} |
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$this->alias = $alias; |
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$this->queryBuilder = new QueryBuilder($em); |
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$this->queryBuilder->select($this->getAlias()); |
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$this->queryBuilder->from($class, $this->getAlias()); |
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$this->queryBuilder->addGroupBy($this->alias . '.id'); |
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} |
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public function addOrderBy($property, $order, $joinProperty = null) |
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{ |
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if ($joinProperty === null) { |
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$joinProperty = []; |
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} elseif (!is_array($joinProperty)) { |
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$joinProperty = [ $joinProperty ]; |
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} |
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$this->orderBy[] = [ |
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'property' => $property, |
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'order' => $order, |
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'joinProperty' => $joinProperty |
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]; |
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return $this; |
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} |
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public function removeOrderBy($property, $order) |
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{ |
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if(!$property && !$order){ |
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return $this; |
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} |
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foreach ($this->orderBy as $index => $orderBy){ |
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if($property && $orderBy['property'] !== $property){ |
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continue; |
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} |
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if($order && $orderBy['operator'] !== $order){ |
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continue; |
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} |
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unset($this->orderBy[$index]); |
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} |
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return $this; |
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} |
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public function addWhere($property, $operator, $value, $joinProperty = null) |
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{ |
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if ($joinProperty === null) { |
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$joinProperty = []; |
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} elseif (!is_array($joinProperty)) { |
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$joinProperty = [ $joinProperty ]; |
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} |
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$this->where[] = [ |
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'property' => $property, |
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'operator' => $operator, |
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'value' => $value, |
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'joinProperty' => $joinProperty |
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]; |
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return $this; |
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} |
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public function removeWhere($property, $operator, $value, $joinProperty = null) |
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{ |
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if(!$property && !$operator && !$value && !$joinProperty){ |
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return $this; |
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} |
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foreach ($this->where as $index => $where){ |
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if($property && $where['property'] !== $property){ |
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continue; |
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} |
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if($operator && $where['operator'] !== $operator){ |
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continue; |
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} |
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if($value && $where['value'] !== $value){ |
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continue; |
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} |
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if($joinProperty && $where['joinProperty'] !== $joinProperty){ |
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continue; |
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} |
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unset($this->where[$index]); |
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} |
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return $this; |
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} |
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public function or(): FilterQueryOr |
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{ |
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$this->orBlocks []= new FilterQueryOr(); |
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return $this->orBlocks[count($this->orBlocks) - 1]; |
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} |
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public function addCallback(callable $callback, $additionalParameters = []) |
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{ |
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$this->callbacks []= [ |
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'function' => $callback, |
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'parameters' => $additionalParameters |
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]; |
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} |
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public function getWhere() |
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{ |
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return $this->where; |
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} |
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public function getOrderBy() |
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{ |
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return $this->orderBy; |
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} |
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/** |
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* @return QueryBuilder |
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*/ |
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public function getQueryBuilder() |
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{ |
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return $this->queryBuilder; |
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} |
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public function build() |
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{ |
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/** @var QueryBuilder $query */ |
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$query = $this->queryBuilder; |
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$globalIndex = 0; |
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foreach($this->getWhere() as $where) { |
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$globalIndex++; |
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if(count($where['joinProperty'])) { |
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$joinPrefix = $this->createJoins($query, $where['joinProperty'], $globalIndex); |
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$query->andWhere(sprintf('%s.%s %s %s', $joinPrefix, $where['property'], $this->getOperator($where), $this->getParameter($where, $globalIndex))); |
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} else { |
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$query->andWhere(sprintf('%s.%s %s %s', $this->getAlias(), $where['property'], $this->getOperator($where), $this->getParameter($where, $globalIndex))); |
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} |
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if($this->hasParameter($where)) { |
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$query->setParameter($this->getParameterName($globalIndex), $this->getValue($where)); |
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} |
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} |
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foreach($this->orBlocks as $orBlock) { |
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$orQueryStrings = []; |
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foreach($orBlock->getWhere() as $where) { |
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$globalIndex++; |
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if(count($where['joinProperty'])) { |
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$joinPrefix = $this->createJoins($query, $where['joinProperty'], $globalIndex); |
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$orQueryStrings []= sprintf('%s.%s %s %s', $joinPrefix, $where['property'], $this->getOperator($where), $this->getParameter($where, $globalIndex)); |
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} else { |
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$orQueryStrings []= sprintf('%s.%s %s %s', $this->getAlias(), $where['property'], $this->getOperator($where), $this->getParameter($where, $globalIndex)); |
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} |
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if($this->hasParameter($where)) { |
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$query->setParameter($this->getParameterName($globalIndex), $this->getValue($where)); |
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} |
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} |
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$query->andWhere(sprintf('(%s)', implode(' OR ', $orQueryStrings))); |
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} |
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foreach($this->getOrderBy() as $order) { |
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$globalIndex++; |
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if(count($order['joinProperty'])) { |
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$joinPrefix = $this->createJoins($query, $order['joinProperty'], $globalIndex); |
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$query->addOrderBy(sprintf('%s.%s', $joinPrefix, $order['property']), $order['order']); |
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} else { |
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$query->addOrderBy(sprintf('%s.%s', $this->getAlias(), $order['property']), $order['order']); |
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} |
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} |
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if ($this->getHydrate() === self::HYDRATE_ID) { |
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$query->select($this->getAlias() . '.id'); |
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} |
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foreach($this->callbacks as $callbackInfo) { |
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$parameters = array_merge([$query, $this->getAlias()], $callbackInfo['parameters']); |
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call_user_func_array($callbackInfo['function'], $parameters); |
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} |
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return $this; |
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} |
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private function createJoins(QueryBuilder $query, $joins, $index) |
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{ |
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$joinPrefixes = $this->createJoinAliases($index, count($joins)); |
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foreach($joins as $joinProperty) { |
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$joinPrefix = array_shift($joinPrefixes); |
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$query->leftJoin(sprintf('%s.%s', $joinPrefix, $joinProperty), $joinPrefixes[0]); |
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} |
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return $joinPrefixes[0]; |
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} |
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public function createJoinAliases($index, $length) |
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{ |
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$result = [$this->getAlias()]; |
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for($i = 0; $i < $length; $i++) { |
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$result []= 'j' . self::UNIQUE_PARAMETER_PREFIX . $index . '_' . $i; |
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} |
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return $result; |
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} |
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private function getValue($where) |
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{ |
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$value = $where['value']; |
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if($where['operator'] == FilterQuery::OPERATOR_LIKE) { |
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return '%'.$value.'%'; |
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} |
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if($where['operator'] == FilterQuery::OPERATOR_START_LIKE) { |
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return $value.'%'; |
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} |
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if($where['operator'] == FilterQuery::OPERATOR_END_LIKE) { |
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return '%'.$value; |
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} |
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return $value; |
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} |
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private function getOperator($where) |
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{ |
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$value = $where['value']; |
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switch($where['operator']) { |
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case(FilterQuery::OPERATOR_EQUALS): |
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if($value === null) { |
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return 'is'; |
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} |
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return '='; |
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case(FilterQuery::OPERATOR_GREATER): |
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return '>'; |
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case(FilterQuery::OPERATOR_GREATER_EQUAL): |
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return '>='; |
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case(FilterQuery::OPERATOR_LESS): |
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return '<'; |
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case(FilterQuery::OPERATOR_LESS_EQUAL): |
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return '<='; |
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case(FilterQuery::OPERATOR_NOT): |
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if($value === null) { |
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return 'is not'; |
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} |
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return '!='; |
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case(FilterQuery::OPERATOR_LIKE): |
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case(FilterQuery::OPERATOR_START_LIKE): |
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case(FilterQuery::OPERATOR_END_LIKE): |
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return 'like'; |
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case(FilterQuery::OPERATOR_IN): |
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return 'in'; |
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323
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} |
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324
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throw new FilterException('Operator not supported in Repository'); |
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325
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} |
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326
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327
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private function getParameter($where, $number) |
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328
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{ |
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329
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$value = $where['value']; |
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330
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if($where['operator'] === FilterQuery::OPERATOR_EQUALS && $value === null) { |
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return 'null'; |
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332
|
|
|
} |
|
333
|
|
|
if($where['operator'] === FilterQuery::OPERATOR_IN) { |
|
334
|
|
|
return '(:' . $this->getParameterName($number) . ')'; |
|
335
|
|
|
} |
|
336
|
|
|
return ':' . $this->getParameterName($number); |
|
337
|
|
|
} |
|
338
|
|
|
|
|
339
|
|
|
private function hasParameter($where) |
|
340
|
|
|
{ |
|
341
|
|
|
$value = $where['value']; |
|
342
|
|
|
if(FilterQuery::OPERATOR_EQUALS && $value === null) { |
|
343
|
|
|
return false; |
|
344
|
|
|
} |
|
345
|
|
|
return true; |
|
346
|
|
|
} |
|
347
|
|
|
|
|
348
|
|
|
private function getParameterName($globalIndex) |
|
349
|
|
|
{ |
|
350
|
|
|
return 'p' . self::UNIQUE_PARAMETER_PREFIX . $globalIndex; |
|
351
|
|
|
} |
|
352
|
|
|
|
|
353
|
|
|
public function getAlias() |
|
354
|
|
|
{ |
|
355
|
|
|
return $this->alias; |
|
356
|
|
|
} |
|
357
|
|
|
|
|
358
|
|
|
/** |
|
359
|
|
|
* @return string |
|
360
|
|
|
*/ |
|
361
|
|
|
public function getHydrate(): string |
|
362
|
|
|
{ |
|
363
|
|
|
return $this->hydrate; |
|
364
|
|
|
} |
|
365
|
|
|
|
|
366
|
|
|
/** |
|
367
|
|
|
* @param string $hydrate |
|
368
|
|
|
*/ |
|
369
|
|
|
public function setHydrate(string $hydrate): void |
|
370
|
|
|
{ |
|
371
|
|
|
$this->hydrate = $hydrate; |
|
372
|
|
|
} |
|
373
|
|
|
|
|
374
|
|
|
/** |
|
375
|
|
|
* @return bool |
|
376
|
|
|
*/ |
|
377
|
|
|
public function isPaginated(): bool |
|
378
|
|
|
{ |
|
379
|
|
|
return $this->paginated; |
|
380
|
|
|
} |
|
381
|
|
|
|
|
382
|
|
|
/** |
|
383
|
|
|
* @param bool $paginated |
|
384
|
|
|
*/ |
|
385
|
|
|
public function setPaginated(bool $paginated): void |
|
386
|
|
|
{ |
|
387
|
|
|
$this->paginated = $paginated; |
|
388
|
|
|
} |
|
389
|
|
|
} |
|
390
|
|
|
|