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<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\db\mysql;
use yii\db\ColumnSchemaBuilder as AbstractColumnSchemaBuilder;
* ColumnSchemaBuilder is the schema builder for MySQL databases.
*
* @author Chris Harris <[email protected]>
* @since 2.0.8
class ColumnSchemaBuilder extends AbstractColumnSchemaBuilder
{
* @inheritdoc
protected function buildUnsignedString()
return $this->isUnsigned ? ' UNSIGNED' : '';
}
protected function buildAfterString()
return $this->after !== null ?
' AFTER ' . $this->db->quoteColumnName($this->after) :
'';
protected function buildFirstString()
return $this->isFirst ? ' FIRST' : '';
protected function buildCommentString()
return $this->comment !== null ? ' COMMENT ' . $this->db->quoteValue($this->comment) : '';
public function __toString()
switch ($this->getTypeCategory()) {
case self::CATEGORY_PK:
$format = '{type}{length}{check}{comment}{pos}{append}';
break;
case self::CATEGORY_NUMERIC:
$format = '{type}{length}{unsigned}{notnull}{unique}{default}{check}{comment}{pos}{append}';
default:
$format = '{type}{length}{notnull}{unique}{default}{check}{comment}{pos}{append}';
return $this->buildCompleteString($format);