Question

if my ClassMap contains a Reference(m => m.Store).Column(“StoreId”) and I call SchemaExport, then my database table contains two foreign key columns, one named ‘StoreId’ and one named ‘Store_id’.

If I leave the Column() method, then its only gonna create the ‘Store_id’ column.

Is this a bug in the FluentNHibernate framework?
I’d like to have the ‘StoreId’ column only.

Thanks in advance.

public class EntityMap<T> : ClassMap<T> where T : Entity
{
    public EntityMap()
    {
        Id( m => m.Id );
    }
}

public class StoreMap : EntityMap<Store>
{
    public StoreMap()
    {
        Map( m => m.Name );
        HasMany( m => m.Staff )
            .Inverse()
            .Cascade.All();
        HasManyToMany( m => m.Catalogue )
            .Table( "Store_Product" )
            .Cascade.All();
    }
}

public class EmployeeMap : EntityMap<Employee>
{
    public EmployeeMap()
    {
        Map( m => m.LastName );
        Map( m => m.FirstName );
        References( m => m.Store ).Column( "StoreId" );
    }
}

public class ProductMap : EntityMap<Product>
{
    public ProductMap()
    {
        Map( m => m.Name );
        HasManyToMany( m => m.Stores )
            .Table( "Store_Product" )
            .Inverse()
            .Cascade.All();
    }
}

Answer 1

Found the solution now, though its not described anywhere I looked.

You have to set the column bidirectional. Then the “Store_id” column disappears. Thank you all for your answers!

For my above example:

public class EntityMap<T> : ClassMap<T> where T : Entity
{
    public EntityMap()
    {
        Id( m => m.Id );
    }
}

public class StoreMap : EntityMap<Store>
{
    public StoreMap()
    {
        Map( m => m.Name );
        HasMany( m => m.Staff )
            .KeyColumn( "StoreId" )
            .Inverse()
            .Cascade.All();
        HasManyToMany( m => m.Catalogue )
            .Table( "Store_Product" )
            .ParentKeyColumn( "StoreId" )
            .ChildKeyColumn( "ProductId" )
            .Cascade.All();
    }
}

public class EmployeeMap : EntityMap<Employee>
{
    public EmployeeMap()
    {
        Map( m => m.LastName );
        Map( m => m.FirstName );
        References( m => m.Store ).Column( "StoreId" );
    }
}

public class ProductMap : EntityMap<Product>
{
    public ProductMap()
    {
        Map( m => m.Name );
        HasManyToMany( m => m.Stores )
            .Table( "Store_Product" )
            .ParentKeyColumn( "ProductId" )
            .ChildKeyColumn( "StoreId" )
            .Inverse()
            .Cascade.All();
    }
}