r9128: all multiple specs for a given backend

[clsql.git] / db-mysql / mysql-sql.lisp

diff --git a/db-mysql/mysql-sql.lisp b/db-mysql/mysql-sql.lisp
index c047b97a95880e8d2054bc432aed080503bea847..7f88875f1cc9000fb59e9684df7381257cbfbae2 100644 (file)
--- a/db-mysql/mysql-sql.lisp
+++ b/db-mysql/mysql-sql.lisp
@@ -419,6 +419,27 @@
          (database-disconnect database)
          (setf (slot-value database 'clsql-base-sys::state) :closed))))))
 
+;;; Database capabilities
+
+(defmethod db-type-use-column-on-drop-index? ((db-type (eql :mysql)))
+  t)
+
+(defmethod db-type-has-views? ((db-type (eql :mysql)))
+  ;; MySQL 4.1 will apparently have views, need to check *mysql-client-info*
+  nil)
+
+(defmethod db-type-has-subqueries? ((db-type (eql :mysql)))
+  ;; MySQL 4.1 will apparently have subqueries, need to check *mysql-client-info*
+  nil)
+
+(defmethod db-type-has-boolean-where? ((db-type (eql :mysql)))
+  nil)
+
+(defmethod db-type-transaction-capable? ((db-type (eql :mysql)) database)
+  (let ((has-innodb (caar (database-query "SHOW VARIABLES LIKE 'HAVE_INNODB'" database :auto))))
+    (and has-innodb (string-equal "YES" has-innodb))))
+
 
 (when (clsql-base-sys:database-type-library-loaded :mysql)
   (clsql-base-sys:initialize-database-type :database-type :mysql))
+