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<?php
/**
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* TableSchema class file.
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*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link http://www.yiiframework.com/
* @copyright Copyright &copy; 2008-2011 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
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namespace yii\db\dao;
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/**
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* TableSchema is the base class for representing the metadata of a database table.
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*
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* It may be extended by different DBMS driver to represent DBMS-specific table metadata.
*
* @property array $columnNames list of column names
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*
* @author Qiang Xue <qiang.xue@gmail.com>
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* @since 2.0
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*/
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class TableSchema extends \yii\base\Object
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{
/**
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* @var string name of the schema that this table belongs to.
*/
public $schemaName;
/**
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* @var string name of this table.
*/
public $name;
/**
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* @var string quoted name of this table. This will include [[schemaName]] if it is not empty.
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*/
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public $quotedName;
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/**
* @var string|array primary key name of this table. If composite key, an array of key names is returned.
*/
public $primaryKey;
/**
* @var string sequence name for the primary key. Null if no sequence.
*/
public $sequenceName;
/**
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* @var array foreign keys of this table. Each array element is of the following structure:
*
* ~~~
* array(
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* 'ForeignTableName',
* 'fk1' => 'pk1', // pk1 is in foreign table
* 'fk2' => 'pk2', // if composite foreign key
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* )
* ~~~
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*/
public $foreignKeys = array();
/**
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* @var array column metadata of this table. Each array element is a [[ColumnSchema]] object, indexed by column names.
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*/
public $columns = array();
/**
* Gets the named column metadata.
* This is a convenient method for retrieving a named column even if it does not exist.
* @param string $name column name
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* @return ColumnSchema metadata of the named column. Null if the named column does not exist.
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*/
public function getColumn($name)
{
return isset($this->columns[$name]) ? $this->columns[$name] : null;
}
/**
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* Returns the names of all columns in this table.
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* @return array list of column names
*/
public function getColumnNames()
{
return array_keys($this->columns);
}
}