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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Db\Schema; |
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use Yiisoft\Db\Expression\ExpressionInterface; |
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/** |
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* @example |
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* (new Query)->select('col1')->from(TableName::create('table1', 't', 'dbo')) |
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* |
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* Note: We must use prefix (from connection) with tables with schema equal defaultSchema or without schema and don't use with other schemas |
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* Note: With ExpressionInterface as tablename - we cannot add prefixes and quoting of table names. |
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* For example with Oracle: (new Query)->select('*')->from(new Expression('dblink1.dbo.table')) for build `select * from dblink1.dbo.table1` |
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*/ |
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final class TableName |
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{ |
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/** |
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* @var ExpressionInterface|string |
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*/ |
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private $name; |
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/** |
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* @var string|null |
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*/ |
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private ?string $alias; |
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/** |
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* @var ExpressionInterface|string|null |
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*/ |
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private $schema; |
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/** |
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* @param ExpressionInterface|string $name |
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* @param string|null $alias |
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* @param ExpressionInterface|string|null $schema |
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*/ |
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private function __construct($name, ?string $alias, $schema = null) |
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{ |
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$this->name = $name; |
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$this->alias = $alias; |
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$this->schema = $schema; |
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} |
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/** |
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* @param ExpressionInterface|string $name |
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* @param string|null $alias |
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* @param ExpressionInterface|string|null $schema |
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* |
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* @return $this |
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*/ |
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public static function create($name, ?string $alias = null, $schema = null): self |
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{ |
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assert(is_string($name) || $name instanceof ExpressionInterface); |
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assert(is_string($schema) || $schema instanceof ExpressionInterface || $schema === null); |
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return new self($name, $alias, $schema); |
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} |
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/** |
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* @return ExpressionInterface|string |
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*/ |
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public function getName() |
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{ |
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return $this->name; |
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} |
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public function getAlias(): ?string |
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{ |
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return $this->alias; |
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} |
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/** |
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* @return ExpressionInterface|string|null |
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*/ |
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public function getSchema() |
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{ |
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return $this->schema; |
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} |
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public function hasAlias(): bool |
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{ |
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return !($this->alias === null || $this->alias === ''); |
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} |
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public function hasSchema(): bool |
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{ |
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return !($this->schema === null || $this->schema === ''); |
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} |
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} |
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