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<?php |
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/** @noinspection PhpComposerExtensionStubsInspection */ |
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declare(strict_types=1); |
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namespace EngineWorks\DBAL\Mssql; |
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use EngineWorks\DBAL\Internal\SqlServerResultFields; |
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use EngineWorks\DBAL\Result as ResultInterface; |
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use EngineWorks\DBAL\Traits\ResultImplementsCountable; |
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use EngineWorks\DBAL\Traits\ResultImplementsIterator; |
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use PDO; |
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use PDOStatement; |
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class Result implements ResultInterface |
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{ |
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use ResultImplementsCountable; |
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use ResultImplementsIterator; |
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/** |
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* PDO element |
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* @var PDOStatement<mixed> |
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*/ |
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private $stmt; |
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/** |
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* The number of the result rows |
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* @var int |
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*/ |
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private $numRows; |
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/** |
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* Set of fieldname and commontype to use instead of detectedTypes |
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* @var array<string, string> |
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*/ |
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private $overrideTypes; |
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/** |
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* The place where getFields result is cached |
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* @var array<int, array{name: string, table: string, commontype: string}>|null |
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*/ |
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private $cachedGetFields; |
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/** |
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* Result based on PDOStatement |
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* |
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* @param PDOStatement<mixed> $result |
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* @param int $numRows If negative number then the number of rows will be obtained |
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* from fetching all the rows and move first |
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* @param array<string, string> $overrideTypes |
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*/ |
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public function __construct(PDOStatement $result, int $numRows, array $overrideTypes = []) |
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{ |
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$this->stmt = $result; |
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$this->overrideTypes = $overrideTypes; |
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$this->numRows = ($numRows < 0) ? $this->obtainNumRows() : $numRows; |
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} |
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/** |
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* Close the query and remove property association |
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*/ |
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public function __destruct() |
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{ |
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$this->stmt->closeCursor(); |
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} |
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/** |
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* Internal method to retrieve the number of rows if not supplied from constructor |
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*/ |
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private function obtainNumRows(): int |
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{ |
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$count = 0; |
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while (false !== $this->stmt->fetch(PDO::FETCH_NUM)) { |
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$count = $count + 1; |
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} |
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$this->stmt->execute(); |
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return $count; |
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} |
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public function getFields(): array |
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{ |
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if (null === $this->cachedGetFields) { |
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$typeChecker = new SqlServerResultFields($this->overrideTypes, 'native_type'); |
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$this->cachedGetFields = $typeChecker->obtainFields($this->stmt); |
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} |
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return $this->cachedGetFields; |
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} |
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public function getIdFields(): bool |
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{ |
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return false; |
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} |
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public function resultCount(): int |
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{ |
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return $this->numRows; |
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} |
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public function fetchRow() |
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{ |
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$return = $this->stmt->fetch(PDO::FETCH_ASSOC); |
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return (! is_array($return)) ? false : $return; |
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} |
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public function moveTo(int $offset): bool |
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{ |
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// there are no records |
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if ($this->resultCount() <= 0) { |
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return false; |
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} |
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// the offset is out of bounds |
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if ($offset < 0 || $offset > $this->resultCount() - 1) { |
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return false; |
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} |
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// if the offset is on previous |
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if (! $this->moveFirst()) { |
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return false; |
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} |
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// move to the offset |
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for ($i = 0; $i < $offset; $i++) { |
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if (false === $this->stmt->fetch(PDO::FETCH_NUM)) { |
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return false; |
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} |
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} |
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return true; |
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} |
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public function moveFirst(): bool |
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{ |
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if ($this->resultCount() <= 0) { |
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return false; |
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} |
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return (false !== $this->stmt->execute()); |
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} |
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} |
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