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<?php |
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declare(strict_types=1); |
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namespace QB\Generic\Expr; |
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use InvalidArgumentException; |
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use QB\Generic\IQueryPart; |
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use QB\Generic\Params\Params; |
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class Expr implements IQueryPart |
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{ |
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protected string $sql; |
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protected bool $useNamedParams; |
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protected Params $params; |
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/** @var int Helps tracking the extensions done on the SQL originally received */ |
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protected int $extendedBy = 0; |
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/** |
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* Expr constructor. |
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* |
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* @param string|IQueryPart $sql |
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* @param array $params |
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* @param int $paramHandle |
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*/ |
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public function __construct(string|IQueryPart $sql, array $params = [], int $paramHandle = Params::ALL_AUTO) |
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{ |
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$this->sql = (string)$sql; |
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$this->useNamedParams = !array_key_exists(0, $params); |
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$allParams = []; |
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foreach ($params as $origKey => $origParam) { |
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$fixedParam = $this->toParamArray($origKey, $origParam, $paramHandle); |
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if (count($fixedParam) > 1) { |
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if (!$this->useNamedParams) { |
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$this->expandSqlUnnamed($origKey, count($fixedParam)); |
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} else { |
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$this->expandSqlNamed($origKey, count($fixedParam)); |
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} |
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} |
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foreach ($fixedParam as $fixedKey => $var) { |
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if ($this->useNamedParams) { |
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$allParams[$fixedKey] = $var; |
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} else { |
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$allParams[] = $var; |
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} |
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} |
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} |
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$this->params = new Params($allParams, $paramHandle); |
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} |
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/** |
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* @param string|int $origKey |
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* @param $param |
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* @param int $paramHandle |
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* |
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* @return array |
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*/ |
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protected function toParamArray(string|int $origKey, $param, int $paramHandle): array |
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{ |
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if (!$this->isParamArray($param, $paramHandle)) { |
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if ($this->useNamedParams) { |
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return [$origKey => $param]; |
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} |
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return [$param]; |
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} |
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if (!$this->useNamedParams) { |
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return $param; |
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} |
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$fixedParams = []; |
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foreach ($param as $i => $p) { |
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$fixedParams[$origKey . '_' . $i] = $p; |
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} |
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return $fixedParams; |
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} |
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/** |
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* @param $param |
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* @param int $paramHandle |
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* |
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* @return bool |
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*/ |
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protected function isParamArray($param, int $paramHandle): bool |
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{ |
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if (is_scalar($param) || is_null($param)) { |
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return false; |
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} |
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if (!is_array($param)) { |
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throw new InvalidArgumentException(sprintf('param must be scalar or array, %s received.', gettype($param))); |
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} |
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if (in_array($paramHandle, [Params::ALL_AUTO, Params::ALL_STRING], true)) { |
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return true; |
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} |
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if (count($param) == 2 && is_scalar($param[0]) && is_int($param[1]) && $param[1] >= 0) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* @param int $origKey |
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* @param int $fixedParamCount |
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*/ |
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protected function expandSqlUnnamed(int $origKey, int $fixedParamCount): void |
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{ |
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$count = $fixedParamCount - 1; |
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$pos = $origKey + $this->extendedBy + $count; |
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$parts = explode('?', $this->sql); |
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$qs = '?' . str_repeat(', ?', $count); |
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$start = implode('?', array_slice($parts, 0, $pos)); |
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$end = implode('?', array_slice($parts, $pos)); |
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$this->sql = $start . $qs . $end; |
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$this->extendedBy += $fixedParamCount - 1; |
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} |
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/** |
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* @param string $origKey |
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* @param int $fixedParamCount |
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*/ |
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protected function expandSqlNamed(string $origKey, int $fixedParamCount): void |
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{ |
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$searchKey = ':' . $origKey; |
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$parts = []; |
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for ($i = 0; $i < $fixedParamCount; $i++) { |
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$parts[] = $searchKey . '_' . $i; |
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} |
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$replace = implode(', ', $parts); |
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$this->sql = str_replace($searchKey, $replace, $this->sql); |
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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->sql; |
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} |
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/** |
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* @return array |
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*/ |
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public function getParams(): array |
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{ |
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return $this->params->getAll(); |
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} |
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} |
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abterphp /
qb
