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70 lines
1.9 KiB
70 lines
1.9 KiB
<?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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} |