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<?php |
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/** |
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* This file is part of Cycle ORM package. |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace Cycle\Database\Injection; |
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use Cycle\Database\Driver\CompilerInterface; |
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use Cycle\Database\Driver\Quoter; |
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use Cycle\Database\Exception\DriverException; |
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abstract class JsonExpression implements FragmentInterface |
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{ |
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protected string $expression; |
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protected Quoter $quoter; |
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/** |
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* @var ParameterInterface[] |
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*/ |
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protected array $parameters = []; |
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/** |
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* @psalm-param non-empty-string $statement |
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*/ |
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public function __construct(string $statement, mixed ...$parameters) |
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{ |
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$this->quoter = new Quoter('', $this->getQuotes()); |
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$this->expression = $this->compile($statement); |
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foreach ($parameters as $parameter) { |
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if ($parameter instanceof ParameterInterface) { |
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$this->parameters[] = $parameter; |
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} else { |
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$this->parameters[] = new Parameter($parameter); |
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} |
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} |
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} |
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public function __toString(): string |
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{ |
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return 'exp:' . $this->expression; |
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} |
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public static function __set_state(array $an_array): self |
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{ |
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return new static( |
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$an_array['expression'] ?? $an_array['statement'], |
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...($an_array['parameters'] ?? []) |
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); |
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} |
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public function getType(): int |
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{ |
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return CompilerInterface::JSON_EXPRESSION; |
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} |
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public function getTokens(): array |
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{ |
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return [ |
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'expression' => $this->expression, |
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'parameters' => $this->parameters, |
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]; |
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} |
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/** |
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* @param non-empty-string $statement |
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* |
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* @return non-empty-string |
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*/ |
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abstract protected function compile(string $statement): string; |
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/** |
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* @param non-empty-string $statement |
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* |
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* @return non-empty-string |
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*/ |
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protected function getField(string $statement): string |
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{ |
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$parts = \explode('->', $statement, 2); |
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return $this->quoter->quote($parts[0]); |
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} |
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/** |
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* @param non-empty-string $statement |
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* |
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* @return non-empty-string |
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*/ |
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protected function getPath(string $statement): string |
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{ |
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$parts = \explode('->', $statement, 2); |
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return \count($parts) > 1 ? ', ' . $this->wrapPath($parts[1]) : ''; |
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} |
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/** |
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* Parses a string with array access syntax (e.g., "field[array-key]") and extracts the field name and key. |
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* |
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* @param non-empty-string $path |
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* |
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* @return array<non-empty-string> |
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*/ |
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protected function parseArraySyntax(string $path): array |
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{ |
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if (\preg_match('/(\[[^\]]+\])+$/', $path, $parts)) { |
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$parsed = [\trim(\substr($path, 0, \strpos($path, $parts[0])))]; |
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\preg_match_all('/\[([^\]]+)\]/', $parts[0], $matches); |
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foreach ($matches[1] as $key) { |
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if (\trim($key) === '') { |
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throw new DriverException('Invalid JSON array path syntax. Array key must not be empty.'); |
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} |
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$parsed[] = $key; |
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} |
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return $parsed; |
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} |
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if (\str_contains($path, '[') && \str_contains($path, ']')) { |
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throw new DriverException( |
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'Unable to parse array path syntax. Array key must be wrapped in square brackets.' |
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); |
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} |
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return [$path]; |
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} |
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/** |
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* @return non-empty-string |
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*/ |
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protected function getQuotes(): string |
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{ |
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return '""'; |
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} |
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/** |
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* Transforms a string like "options->languages" into a correct path like $."options"."languages". |
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* |
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* @param non-empty-string $value |
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* @param non-empty-string $delimiter |
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* |
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* @return non-empty-string |
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*/ |
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private function wrapPath(string $value, string $delimiter = '->'): string |
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{ |
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$value = \preg_replace("/(\\+)?'/", "''", $value); |
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$segments = \explode($delimiter, $value); |
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$path = \implode('.', \array_map(fn (string $segment): string => $this->wrapPathSegment($segment), $segments)); |
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return "'$" . (\str_starts_with($path, '[') ? '' : '.') . $path . "'"; |
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} |
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/** |
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* @param non-empty-string $segment |
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* |
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* @return non-empty-string |
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*/ |
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private function wrapPathSegment(string $segment): string |
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{ |
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$parts = $this->parseArraySyntax($segment); |
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if (isset($parts[1])) { |
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return \sprintf('"%s"[%s]', $parts[0], $parts[1]); |
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} |
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return \sprintf('"%s"', $segment); |
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} |
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} |
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