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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_merge; |
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use function array_unshift; |
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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 array<int, 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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* @internal Use the and() / or() factory methods. |
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891 |
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* |
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* @param self|string $part |
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891 |
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* @param self|string ...$parts |
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891 |
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*/ |
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private function __construct(string $type, $part, ...$parts) |
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{ |
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$this->type = $type; |
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$this->parts = array_merge([$part], $parts); |
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} |
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/** |
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* Creates a predicate from one or more predicates combined by the AND logic. |
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891 |
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* |
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* @param self|string $predicate |
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891 |
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* @param self|string ...$predicates |
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567 |
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* |
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* @return self|string |
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*/ |
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public static function createPredicate($predicate, ...$predicates) |
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{ |
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if (count($predicates) === 0) { |
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return $predicate; |
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} |
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return new self(self::TYPE_AND, $predicate, ...$predicates); |
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} |
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/** |
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891 |
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* Appends the given predicates combined by the given type of logic to the current predicate. |
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* |
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* @param self|string|null $currentPredicate |
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* @param self|string ...$predicates |
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* |
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* @return self|string |
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891 |
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*/ |
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public static function appendToPredicate($currentPredicate, string $type, ...$predicates) |
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{ |
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if ($currentPredicate instanceof self && $currentPredicate->type === $type) { |
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return $currentPredicate->with(...$predicates); |
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} |
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891 |
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if ($currentPredicate !== null) { |
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array_unshift($predicates, $currentPredicate); |
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} elseif (count($predicates) === 1) { |
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return $predicates[0]; |
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} |
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864 |
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return new self($type, ...$predicates); |
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864 |
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} |
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/** |
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* @param self|string $part |
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* @param self|string ...$parts |
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*/ |
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public static function and($part, ...$parts) : self |
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{ |
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810 |
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return new self(self::TYPE_AND, $part, ...$parts); |
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189 |
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} |
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/** |
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621 |
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* @param self|string $part |
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* @param self|string ...$parts |
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*/ |
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public static function or($part, ...$parts) : self |
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{ |
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return new self(self::TYPE_OR, $part, ...$parts); |
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} |
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/** |
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* Returns a new CompositeExpression with the given parts added. |
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* |
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* @param self|string $part |
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* @param self|string ...$parts |
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*/ |
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public function with($part, ...$parts) : self |
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{ |
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$that = clone $this; |
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$that->parts[] = $part; |
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foreach ($parts as $part) { |
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$that->parts[] = $part; |
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} |
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return $that; |
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} |
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/** |
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* Retrieves the amount of expressions on composite expression. |
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*/ |
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public function count() : int |
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{ |
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return count($this->parts); |
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} |
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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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return (string) $this->parts[0]; |
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} |
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return '(' . implode(') ' . $this->type . ' (', $this->parts) . ')'; |
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} |
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} |
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doctrine /
dbal
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