From 78af2b4630ccde4b03659a259f739f83ae0de9ec Mon Sep 17 00:00:00 2001 From: rojaro <> Date: Mon, 13 Jul 2009 14:02:17 +0000 Subject: - ActiveRecord Port from Yii ... not perfect but works ^^ --- framework/Db/Schema/TDbColumnSchema.php | 145 ++++++++++++++++++++++++++++++++ 1 file changed, 145 insertions(+) create mode 100755 framework/Db/Schema/TDbColumnSchema.php (limited to 'framework/Db/Schema/TDbColumnSchema.php') diff --git a/framework/Db/Schema/TDbColumnSchema.php b/framework/Db/Schema/TDbColumnSchema.php new file mode 100755 index 00000000..f2c4faaa --- /dev/null +++ b/framework/Db/Schema/TDbColumnSchema.php @@ -0,0 +1,145 @@ + + * @link http://www.yiiframework.com/ + * @copyright Copyright © 2008-2009 Yii Software LLC + * @license http://www.yiiframework.com/license/ + */ + +prado::using('System.Db.Schema.TDbExpression'); + +/** + * TDbColumnSchema class describes the column meta data of a database table. + * + * @author Qiang Xue + * @version $Id: TDbColumnSchema.php 2679 2009-06-15 07:49:42Z Christophe.Boulain $ + * @package System.Db.Schema + * @since 1.0 + */ +class TDbColumnSchema extends TComponent +{ + /** + * @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 $rawName; + /** + * @var boolean whether this column can be null. + */ + public $allowNull; + /** + * @var string the DB type of this column. + */ + public $dbType; + /** + * @var string the PHP type of this column. + */ + public $type; + /** + * @var mixed default value of this column + */ + public $defaultValue; + /** + * @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 a foreign key + */ + public $isForeignKey; + + + /** + * Initializes the column with its DB type and default value. + * This sets up the column's PHP type, size, precision, scale as well as default value. + * @param string the column's DB type + * @param mixed the default value + */ + public function init($dbType, $defaultValue) + { + $this->dbType=$dbType; + $this->extractType($dbType); + $this->extractLimit($dbType); + if($defaultValue!==null) + $this->extractDefault($defaultValue); + } + + /** + * Extracts the PHP type from DB type. + * @param string DB type + */ + protected function extractType($dbType) + { + if(stripos($dbType,'int')!==false) + $this->type='integer'; + else if(stripos($dbType,'bool')!==false) + $this->type='boolean'; + else if(preg_match('/(real|floa|doub)/i',$dbType)) + $this->type='double'; + else + $this->type='string'; + } + + /** + * Extracts size, precision and scale information from column's DB type. + * @param string the column's DB type + */ + protected function extractLimit($dbType) + { + if(strpos($dbType,'(') && preg_match('/\((.*)\)/',$dbType,$matches)) + { + $values=explode(',',$matches[1]); + $this->size=$this->precision=(int)$values[0]; + if(isset($values[1])) + $this->scale=(int)$values[1]; + } + } + + /** + * Extracts the default value for the column. + * The value is typecasted to correct PHP type. + * @param mixed the default value obtained from metadata + */ + protected function extractDefault($defaultValue) + { + $this->defaultValue=$this->typecast($defaultValue); + } + + /** + * Converts the input value to the type that this column is of. + * @param mixed input value + * @return mixed converted value + */ + public function typecast($value) + { + if(gettype($value)===$this->type || $value===null || $value instanceof TDbExpression) + return $value; + if($value==='') + return $this->type==='string' ? '' : null; + switch($this->type) + { + case 'integer': return (integer)$value; + case 'boolean': return (boolean)$value; + case 'double': return (double)$value; + case 'string': return (string)$value; + default: return $value; + } + } +} -- cgit v1.2.3