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<?php
/**
* ColumnSchema class file.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link http://www.yiiframework.com/
* @copyright Copyright &copy; 2008-2012 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\db\dao;
/**
* ColumnSchema class describes the column meta data of a database table.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @since 2.0
*/
class ColumnSchema extends \yii\base\Component
{
/**
* @var string name of this column (without quotes).
*/
public $name;
/**
* @var string raw name of this column. This is the quoted name that can be used in SQL queries.
*/
public $quotedName;
/**
* @var boolean whether this column can be null.
*/
public $allowNull;
/**
* @var string logical type of this column. Possible logic types include:
* string, text, boolean, smallint, integer, bigint, float, decimal, datetime, timestamp, time, date, binary
*/
public $type;
/**
* @var string the PHP type of this column. Possible PHP types include:
* string, boolean, integer, double.
*/
public $phpType;
/**
* @var string the DB type of this column.
*/
public $dbType;
/**
* @var mixed default value of this column
*/
public $defaultValue;
/**
* @var array enumerable values
*/
public $enumValues;
/**
* @var integer size of the column.
*/
public $size;
/**
* @var integer precision of the column data, if it is numeric.
*/
public $precision;
/**
* @var integer scale of the column data, if it is numeric.
*/
public $scale;
/**
* @var boolean whether this column is a primary key
*/
public $isPrimaryKey;
/**
* @var boolean whether this column is auto-incremental
*/
public $autoIncrement = false;
/**
* @var boolean whether this column is unsigned. This is only meaningful
* when [[type]] is `integer` or `bigint`.
*/
public $unsigned;
/**
* Extracts the PHP type from DB type.
* @return string PHP type name.
*/
protected function getPhpType()
{
static $typeMap = array( // logical type => php type
'smallint' => 'integer',
'integer' => 'integer',
'bigint' => 'integer',
'boolean' => 'boolean',
'float' => 'double',
);
if (isset($typeMap[$this->type])) {
if ($this->type === 'bigint') {
return PHP_INT_SIZE == 8 && !$this->unsigned ? 'integer' : 'string';
} elseif ($this->type === 'integer') {
return PHP_INT_SIZE == 4 && $this->unsigned ? 'string' : 'integer';
}
return $typeMap[$this->type];
}
return 'string';
}
/**
* Converts the input value to the type that this column is of.
* @param mixed $value input value
* @return mixed converted value
*/
public function typecast($value)
{
if ($value === null || gettype($value) === $this->phpType || $value instanceof Expression) {
return $value;
}
switch ($this->phpType) {
case 'string':
return (string)$value;
case 'integer':
return (integer)$value;
case 'boolean':
return (boolean)$value;
}
return $value;
}
}