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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\Exception\InvalidArgumentException; |
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use Yiisoft\Db\Expression\ExpressionInterface; |
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/** |
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* Holds name of a table including schema and alias. |
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* Usage is the following: |
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* |
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* (new Query)->select('col1')->from(new TableName('table1', 't', 'dbo')) |
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* |
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* Note: We use prefix from connection with tables which schema equals default schema or which has no schema. |
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* Note: With `ExpressionInterface` as tablename we cannot add prefixes and quote table names. |
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* For example, with Oracle: `(new Query)->select('*')->from(new Expression('dblink1.dbo.table'))` to 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 $schema |
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*/ |
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public function __construct($name, ?string $alias = null, $schema = null) |
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{ |
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if (!is_string($name) && !$name instanceof ExpressionInterface) { |
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throw new InvalidArgumentException( |
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'Name of the table should be a string or an instance of ExpressionInterface.' |
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); |
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} |
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if ($schema !== null && !is_string($schema) && !($schema instanceof ExpressionInterface)) { |
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throw new InvalidArgumentException( |
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'Schema should be null, string, or an instance of ExpressionInterface.' |
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); |
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} |
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$this->name = $name; |
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$this->alias = empty($alias) ? null : $alias; |
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$this->schema = empty($schema) ? null : $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; |
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} |
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public function hasSchema(): bool |
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{ |
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return $this->schema !== null; |
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} |
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} |
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