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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\Driver\Postgres\Injection; |
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use Cycle\Database\Exception\DriverException; |
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use Cycle\Database\Injection\JsonExpression; |
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abstract class PostgresJsonExpression extends JsonExpression |
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{ |
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/** |
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* Returns the compiled quoted path without the field name and attribute. |
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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 $quote = "'"): string |
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{ |
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$path = $this->getPathArray($statement, $quote); |
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\array_pop($path); |
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return \implode('->', $path); |
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} |
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/** |
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* Returns the attribute (last part of the full path). |
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* |
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* @param non-empty-string $statement |
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* |
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* @return int|non-empty-string |
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*/ |
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protected function getAttribute(string $statement): string|int |
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{ |
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$attribute = $this->findAttribute($statement); |
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if ($attribute === null) { |
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throw new DriverException('Invalid statement. Unable to extract attribute.'); |
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} |
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return $attribute; |
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} |
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/** |
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* Returns the attribute (last part of the full path). Returns null if the attribute is not found. |
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* |
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* @param non-empty-string $statement |
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* |
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* @return int|non-empty-string|null |
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*/ |
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protected function findAttribute(string $statement): string|int|null |
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{ |
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$path = $this->getPathArray($statement); |
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if ($path === []) { |
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return null; |
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} |
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$attribute = \array_pop($path); |
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return \filter_var($attribute, FILTER_VALIDATE_INT) |
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? (int) $attribute |
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: $attribute; |
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} |
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/** |
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* Returns array of the compiled quoted path and attribute without the field name. |
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* |
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* @param non-empty-string $statement |
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* |
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* @return array<non-empty-string> |
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*/ |
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private function getPathArray(string $statement, string $quote = "'"): array |
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{ |
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$path = \explode('->', $statement); |
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\array_shift($path); // remove field name (first element) |
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$result = []; |
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foreach ($path as $pathAttribute) { |
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$parsedAttributes = $this->parseArraySyntax($pathAttribute); |
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foreach ($parsedAttributes as $attribute) { |
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$result[] = \filter_var($attribute, FILTER_VALIDATE_INT) !== false |
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? $attribute |
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: $quote . $attribute . $quote; |
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} |
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} |
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return $result; |
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} |
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} |
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cycle /
database
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