1 files changed, 72 insertions, 0 deletions
diff --git a/framework/db/schema/mysql/CMysqlColumnSchema.php b/framework/db/schema/mysql/CMysqlColumnSchema.php
new file mode 100644
index 0000000..7ffb03d
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+++ b/framework/db/schema/mysql/CMysqlColumnSchema.php
@@ -0,0 +1,72 @@
+<?php
+/**
+ * CMysqlColumnSchema class file.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright &copy; 2008-2011 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+/**
+ * CMysqlColumnSchema class describes the column meta data of a MySQL table.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id: CMysqlColumnSchema.php 3204 2011-05-05 21:36:32Z alexander.makarow $
+ * @package system.db.schema.mysql
+ * @since 1.0
+ */
+class CMysqlColumnSchema extends CDbColumnSchema
+{
+	/**
+	 * Extracts the PHP type from DB type.
+	 * @param string $dbType DB type
+	 */
+	protected function extractType($dbType)
+	{
+		if(strncmp($dbType,'enum',4)===0)
+			$this->type='string';
+		else if(strpos($dbType,'float')!==false || strpos($dbType,'double')!==false)
+			$this->type='double';
+		else if(strpos($dbType,'bool')!==false)
+			$this->type='boolean';
+		else if(strpos($dbType,'int')===0 && strpos($dbType,'unsigned')===false || preg_match('/(bit|tinyint|smallint|mediumint)/',$dbType))
+			$this->type='integer';
+		else
+			$this->type='string';
+	}
+
+	/**
+	 * 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)
+	{
+		if($this->dbType==='timestamp' && $defaultValue==='CURRENT_TIMESTAMP')
+			$this->defaultValue=null;
+		else
+			parent::extractDefault($defaultValue);
+	}
+
+	/**
+	 * Extracts size, precision and scale information from column's DB type.
+	 * @param string $dbType the column's DB type
+	 */
+	protected function extractLimit($dbType)
+	{
+		if (strncmp($dbType, 'enum', 4)===0 && preg_match('/\((.*)\)/',$dbType,$matches))
+		{
+			$values = explode(',', $matches[1]);
+			$size = 0;
+			foreach($values as $value)
+			{
+				if(($n=strlen($value)) > $size)
+					$size=$n;
+			}
+			$this->size = $this->precision = $size-2;
+		}
+		else
+			parent::extractLimit($dbType);
+	}
+}
+\ No newline at end of file