NHibernate.StaleStateException : Unexpected row count: 0; expected: 1

Question

Hl Guys,

I am busy writing a backend administrative program for a system that exists. I have selected NHibernate for my data access solution and am fairly new to it.

Answer 1

Got the same error message but it was triggered by a delete. The simple reason was the entry had been deleted before already.

Answer 2

For anyone having problems with inserts with AutoNumber / AutoIncrement for MySQL use the mapping. I found that the .Identity can be temperamental

Id(x => x.Id).GeneratedBy.Increment();

Answer 3

I'm pretty sure you'll need to add a <version/> property to your MeetingAdministrator class to have this working propertly. See this article for further discussion.