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70 lines
1.9 KiB
70 lines
1.9 KiB
14 years ago
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<?php
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/**
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* ColumnSchema 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 Copyright © 2008-2012 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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* ColumnSchema 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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* @since 2.0
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*/
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class ColumnSchema extends \yii\db\dao\ColumnSchema
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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 ($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('/\((.*)\)/', $dbType, $matches))
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{
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$values = explode(',', $matches[1]);
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$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 = $size-2;
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}
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else
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parent::extractLimit($dbType);
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}
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}
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