unzend.com_331

<?php
// Ioncube Decoder Unzend.Com Email unzend@gmail.com
// http://www.unzend.com
/**
 * CDbColumnSchema class file.
 *
 * @author Qiang Xue <qiang.xue@gmail.com>
 * @link http://www.yiiframework.com/
 * @copyright 2008-2013 Yii Software LLC
 * @license http://www.yiiframework.com/license/
 */

/**
 * CDbColumnSchema class describes the column meta data of a database table.
 *
 * @author Qiang Xue <qiang.xue@gmail.com>
 * @package system.db.schema
 * @since 1.0
 */
class CDbColumnSchema extends CComponent
{
    /**
     * @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;
    /**
     * @var boolean whether this column is auto-incremental
     * @since 1.1.7
     */
    public $autoIncrement=false;
    /**
     * @var string comment of this column. Default value is empty string which means that no comment
     * has been set for the column. Null value means that RDBMS does not support column comments
     * at all (SQLite) or comment retrieval for the active RDBMS is not yet supported by the framework.
     * @since 1.1.13
     */
    public $comment='';

    /**
     * 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 $dbType the column's DB type
     * @param mixed $defaultValue the default value
     */
    public function init($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 $dbType DB type
     */
    protected function extractType($dbType)
    {
        if(stripos($dbType,'int')!==false && stripos($dbType,'unsigned int')===false)
            $this->type='integer';
        elseif(stripos($dbType,'bool')!==false)
            $this->type='boolean';
        elseif(preg_match('/(real|floa|doub)/i',$dbType))
            $this->type='double';
        else
            $this->type='string';
    }

    /**
     * Extracts size, precision and scale information from column's DB type.
     * @param string $dbType the column's DB type
     */
    protected function extractLimit($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 $defaultValue the default value obtained from metadata
     */
    protected function extractDefault($defaultValue)
    {
        $this->defaultValue=$this->typecast($defaultValue);
    }

    /**
     * Converts the input value to the type that this column is of.
     * @param mixed $value input value
     * @return mixed converted value
     */
    public function typecast($value)
    {
        if(gettype($value)===$this->type || $value===null || $value instanceof CDbExpression)
            return $value;
        if($value==='' && $this->allowNull)
            return $this->type==='string' ? '' : null;
        switch($this->type)
        {
            case 'string': return (string)$value;
            case 'integer': return (integer)$value;
            case 'boolean': return (boolean)$value;
            case 'double':
            default: return $value;
        }
    }
}