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e7b7cd0291
replaces pull request #1842 CMysqlColumnSchema: support for MySQL BIT(M) data type proper default values. For example, MySQL (MariaDB) return default value as "b'1'" string, not as "1", so, this case should be considered especially. See also http://dev.mysql.com/doc/refman/5.0/en/bit-type.html
75 lines
2.1 KiB
PHP
75 lines
2.1 KiB
PHP
<?php
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/**
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* CMysqlColumnSchema class file.
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @link http://www.yiiframework.com/
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* @copyright 2008-2013 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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/**
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* CMysqlColumnSchema class describes the column meta data of a MySQL table.
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @package system.db.schema.mysql
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* @since 1.0
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*/
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class CMysqlColumnSchema extends CDbColumnSchema
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{
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/**
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* Extracts the PHP type from DB type.
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* @param string $dbType DB type
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*/
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protected function extractType($dbType)
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{
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if(strncmp($dbType,'enum',4)===0)
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$this->type='string';
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elseif(strpos($dbType,'float')!==false || strpos($dbType,'double')!==false)
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$this->type='double';
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elseif(strpos($dbType,'bool')!==false)
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$this->type='boolean';
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elseif(strpos($dbType,'int')===0 && strpos($dbType,'unsigned')===false || preg_match('/(bit|tinyint|smallint|mediumint)/',$dbType))
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$this->type='integer';
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else
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$this->type='string';
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}
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/**
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* Extracts the default value for the column.
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* The value is typecasted to correct PHP type.
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* @param mixed $defaultValue the default value obtained from metadata
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*/
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protected function extractDefault($defaultValue)
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{
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if(strncmp($this->dbType,'bit',3)===0)
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$this->defaultValue=bindec(trim($defaultValue,'b\''));
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elseif($this->dbType==='timestamp' && $defaultValue==='CURRENT_TIMESTAMP')
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$this->defaultValue=null;
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else
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parent::extractDefault($defaultValue);
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}
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/**
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* Extracts size, precision and scale information from column's DB type.
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* @param string $dbType the column's DB type
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*/
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protected function extractLimit($dbType)
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{
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if (strncmp($dbType, 'enum', 4)===0 && preg_match('/\(([\'"])(.*)\\1\)/',$dbType,$matches))
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{
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// explode by (single or double) quote and comma (ENUM values may contain commas)
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$values = explode($matches[1].','.$matches[1], $matches[2]);
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$size = 0;
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foreach($values as $value)
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{
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if(($n=strlen($value)) > $size)
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$size=$n;
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}
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$this->size = $this->precision = $size;
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}
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else
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parent::extractLimit($dbType);
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}
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}
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