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<?php |
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/** |
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* Spiral Framework. |
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* |
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* @license MIT |
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* @author Anton Titov (Wolfy-J) |
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*/ |
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namespace Spiral\Database\Builders; |
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use Interop\Container\ContainerInterface; |
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use Spiral\Core\Component; |
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use Spiral\Database\Entities\Driver; |
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use Spiral\Database\Entities\QueryCompiler; |
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use Spiral\Database\Exceptions\BuilderException; |
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use Spiral\Database\Helpers\QueryInterpolator; |
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use Spiral\Database\Injections\ExpressionInterface; |
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use Spiral\Database\Injections\ParameterInterface; |
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/** |
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* QueryBuilder classes generate set of control tokens for query compilers, this is query level |
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* abstraction. |
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*/ |
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abstract class QueryBuilder extends Component implements ExpressionInterface |
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{ |
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/** |
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* @var Driver |
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*/ |
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protected $driver = null; |
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/** |
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* @var QueryCompiler |
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*/ |
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protected $compiler = null; |
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/** |
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* @param Driver $driver Associated driver. |
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* @param QueryCompiler $compiler Driver specific QueryCompiler instance (one per builder). |
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*/ |
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public function __construct(Driver $driver, QueryCompiler $compiler) |
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{ |
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$this->driver = $driver; |
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$this->compiler = $compiler; |
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} |
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/** |
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* Get associated driver instance. |
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* |
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* @return Driver |
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*/ |
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public function getDriver(): Driver |
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{ |
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return $this->driver; |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @param QueryCompiler $compiler Associated compiled to be used by default. |
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*/ |
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abstract public function sqlStatement(QueryCompiler $compiler = null): string; |
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/** |
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* Get ordered list of builder parameters in a form of ParameterInterface array. |
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* |
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* @return ParameterInterface[] |
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* |
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* @throws BuilderException |
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*/ |
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abstract public function getParameters(): array; |
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/** |
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* Get interpolated (populated with parameters) SQL which will be run against database, please |
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* use this method for debugging purposes only. |
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* |
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* @return string |
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*/ |
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public function queryString(): string |
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{ |
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return QueryInterpolator::interpolate($this->sqlStatement(), $this->getParameters()); |
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} |
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/** |
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* @return string |
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*/ |
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public function __toString(): string |
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{ |
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return $this->sqlStatement(); |
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} |
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/** |
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* @return array |
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*/ |
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public function __debugInfo() |
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{ |
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try { |
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$queryString = $this->queryString(); |
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} catch (\Exception $e) { |
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$queryString = "[ERROR: {$e->getMessage()}]"; |
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} |
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$debugInfo = [ |
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'statement' => $queryString, |
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'parameters' => $this->getParameters(), |
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'driver' => $this->driver |
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]; |
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return $debugInfo; |
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} |
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/** |
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* Helper methods used to correctly fetch and split identifiers provided by function |
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* parameters. |
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* It support array list, string or comma separated list. Attention, this method will not work |
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* with complex parameters (such as functions) provided as one comma separated string, please |
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* use arrays in this case. |
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* |
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* @param array $identifiers |
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* |
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* @return array |
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*/ |
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protected function fetchIdentifiers(array $identifiers): array |
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{ |
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if (count($identifiers) == 1 && is_string($identifiers[0])) { |
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return array_map('trim', explode(',', $identifiers[0])); |
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} |
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if (count($identifiers) == 1 && is_array($identifiers[0])) { |
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return $identifiers[0]; |
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} |
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return $identifiers; |
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} |
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/** |
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* Expand all QueryBuilder parameters to create flatten list. |
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* |
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* @param array $parameters |
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* |
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* @return array |
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*/ |
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protected function flattenParameters(array $parameters): array |
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{ |
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$result = []; |
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foreach ($parameters as $parameter) { |
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if ($parameter instanceof self) { |
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$result = array_merge($result, $parameter->getParameters()); |
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continue; |
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} |
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$result[] = $parameter; |
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} |
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return $result; |
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} |
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/** |
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* Generate PDO statement based on generated sql and parameters. |
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* |
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* @return \PDOStatement |
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*/ |
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protected function pdoStatement(): \PDOStatement |
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{ |
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return $this->driver->statement($this->sqlStatement(), $this->getParameters()); |
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} |
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/** |
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* @return ContainerInterface |
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*/ |
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protected function iocContainer() |
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{ |
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//Falling back to driver specific container |
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return $this->driver->iocContainer(); |
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} |
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} |
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spiral /
components
