转载：Help with Dbo

Wt::Dbo中，connection对象跟session对象一样，在多个对象之间共享时需要长期存在。

http://redmine.webtoolkit.eu/boards/2/topics/1100

亮点：

Hey,

Since you are the second person with a similar problem, I believe we may have actually made a mistake designing the API:

Session::setConnection(SqlConnection& connection)

should probably have had the signature:

Session::setConnection(SqlConnection *connection)

since this makes it more explicit that the connection object is passed by reference and should outlive the session object !
So you need to keep the connection around (store it also in your application instance).

Perhaps it is not too late to deprecate one API for the other ...

潘晓婷