Question

I want to map a property only if a specific column is eual to one of two values,
currently I have tried this:

HasMany<Event>(u => u.Events)
    .KeyColumn("Id")
    .Cascade.AllDeleteOrphan()
    .OrderBy("OrderByDate desc")
    .Where(e => e.Status == Status.New || e.Status == Status.Old);

but I get an exception “Unable to convert expression to SQL”

how can I create a mapping with two where clauses with an OR operator between them ?

EDIT: I don’t want to use SQL in my mapping, I want to use lambda expression (if possible…)

Answer 1

the implementation does handle some things but it is far from complete (especially ExpressionType.OrElse/BinaryExpression is not handled). You have to write sql yourself or enhance the implementation of class ExpressionToSql.