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<?php |
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declare(strict_types=1); |
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namespace PhpMyAdmin\SqlParser\Components; |
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use PhpMyAdmin\SqlParser\Component; |
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use PhpMyAdmin\SqlParser\Components\Parsers\Conditions; |
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use function array_search; |
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/** |
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* `JOIN` keyword parser. |
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*/ |
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final class JoinKeyword implements Component |
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{ |
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/** |
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* Types of join. |
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*/ |
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public const JOINS = [ |
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'CROSS JOIN' => 'CROSS', |
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'FULL JOIN' => 'FULL', |
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'FULL OUTER JOIN' => 'FULL', |
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'INNER JOIN' => 'INNER', |
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'JOIN' => 'JOIN', |
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'LEFT JOIN' => 'LEFT', |
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'LEFT OUTER JOIN' => 'LEFT', |
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'RIGHT JOIN' => 'RIGHT', |
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'RIGHT OUTER JOIN' => 'RIGHT', |
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'NATURAL JOIN' => 'NATURAL', |
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'NATURAL LEFT JOIN' => 'NATURAL LEFT', |
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'NATURAL RIGHT JOIN' => 'NATURAL RIGHT', |
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'NATURAL LEFT OUTER JOIN' => 'NATURAL LEFT OUTER', |
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'NATURAL RIGHT OUTER JOIN' => 'NATURAL RIGHT OUTER', |
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'STRAIGHT_JOIN' => 'STRAIGHT', |
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]; |
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/** |
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* Type of this join. |
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* |
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* @see JoinKeyword::JOINS |
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* |
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* @var string |
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*/ |
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public $type; |
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/** |
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* Join expression. |
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* |
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* @var Expression |
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*/ |
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public $expr; |
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/** |
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* Join conditions. |
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* |
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* @var Condition[] |
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*/ |
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public $on; |
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/** |
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* Columns in Using clause. |
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* |
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* @var ArrayObj |
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*/ |
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public $using; |
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/** |
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* @see JoinKeyword::JOINS |
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* |
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* @param string $type Join type |
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* @param Expression $expr join expression |
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* @param Condition[] $on join conditions |
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* @param ArrayObj $using columns joined |
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*/ |
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public function __construct( |
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string|null $type = null, |
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Expression|null $expr = null, |
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array|null $on = null, |
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ArrayObj|null $using = null, |
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) { |
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$this->type = $type; |
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$this->expr = $expr; |
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$this->on = $on; |
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$this->using = $using; |
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} |
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public function build(): string |
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{ |
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return array_search($this->type, self::JOINS) . ' ' . $this->expr |
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. (! empty($this->on) ? ' ON ' . Conditions::buildAll($this->on) : '') |
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. (! empty($this->using) ? ' USING ' . $this->using->build() : ''); |
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} |
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public function __toString(): string |
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{ |
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return $this->build(); |
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} |
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} |
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phpmyadmin /
sql-parser
