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<?php |
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declare(strict_types=1); |
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namespace Doctrine\DBAL\Query\Expression; |
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use Countable; |
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use function array_filter; |
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use function array_values; |
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use function count; |
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use function implode; |
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/** |
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* Composite expression is responsible to build a group of similar expression. |
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* |
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* This class is immutable. |
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*/ |
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class CompositeExpression implements Countable |
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{ |
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/** |
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* Constant that represents an AND composite expression. |
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*/ |
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public const TYPE_AND = 'AND'; |
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/** |
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* Constant that represents an OR composite expression. |
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*/ |
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public const TYPE_OR = 'OR'; |
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/** |
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* The instance type of composite expression. |
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* |
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* @var string |
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*/ |
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private $type; |
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/** |
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* Each expression part of the composite expression. |
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* |
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* @var self[]|string[] |
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*/ |
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private $parts = []; |
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891 |
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/** |
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* @param string $type Instance type of composite expression. |
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891 |
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* @param self[]|string[] $parts Composition of expressions to be joined on composite expression. |
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*/ |
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891 |
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public function __construct(string $type, array $parts = []) |
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891 |
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{ |
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$this->type = $type; |
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$this->parts = array_values(array_filter($parts, static function ($part) { |
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return ! ($part instanceof self && count($part) === 0); |
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})); |
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} |
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/** |
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* Returns a CompositeExpression with the given part added. |
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891 |
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* |
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* This instance is immutable and unaffected by this method call. |
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891 |
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* |
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567 |
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* @param self|string ...$parts |
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*/ |
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public function with(...$parts) : self |
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891 |
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{ |
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$that = clone $this; |
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foreach ($parts as $part) { |
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if ($part instanceof self && count($part) === 0) { |
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continue; |
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} |
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$that->parts[] = $part; |
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} |
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891 |
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return $that; |
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891 |
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} |
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/** |
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* Retrieves the amount of expressions on composite expression. |
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891 |
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*/ |
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public function count() : int |
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{ |
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return count($this->parts); |
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891 |
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} |
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891 |
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/** |
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* Retrieves the string representation of this composite expression. |
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*/ |
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public function __toString() : string |
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{ |
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if ($this->count() === 1) { |
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864 |
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return (string) $this->parts[0]; |
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} |
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864 |
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return '(' . implode(') ' . $this->type . ' (', $this->parts) . ')'; |
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} |
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/** |
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* Returns the type of this composite expression (AND/OR). |
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810 |
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*/ |
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public function getType() : string |
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810 |
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{ |
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return $this->type; |
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} |
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} |
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doctrine /
dbal
