I have a table in database which has some columns like year,name and also 12 columns (m1,m2,...,m12) representing months. I would like to map this table into one class using NHibernate, ideally, these 12 mapped columns would look like:
_mappedMonths[] = new double[12];
Has anyone a solution for this ?
See my answer on this one: http://stackoverflow.com/questions/1155006/how-to-bind-a-series-of-columns-into-a-collection-with-nhibernate/1174429#1174429
If you really want to map the columns directly to an array, as you describe, take a look at the ICompositeUserType interface. You can find an article about custom NHibernate mapping here, and this blog post might be of interest as well.
However, if it is not super important you might consider mapping the columns just as you normally would, but as private/protected properties, and then create a public property in your class that exposes those private/public properties as an array. That would be a simpler and faster solution, but would result in code that is not quite as clean.