/// <summary>
/// This method is called when the model for a derived context has been initialized, but
/// before the model has been locked down and used to initialize the context. The default
/// implementation of this method takes the <see cref="IMappingConfiguration" /> array passed in on construction and
/// applies them.
/// If no configuration mappings were passed it it does nothing.
/// </summary>
/// <remarks>
/// Typically, this method is called only once when the first instance of a derived context
/// is created. The model for that context is then cached and is for all further instances of
/// the context in the app domain. This caching can be disabled by setting the ModelCaching
/// property on the given ModelBuidler, but note that this can seriously degrade performance.
/// More control over caching is provided through use of the DbModelBuilder and DbContextFactory
/// classes directly.
/// </remarks>
/// <param name="modelBuilder">The builder that defines the model for the context being created</param>
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
if (_databaseFirst)
{
throw new UnintentionalCodeFirstException();
}
_log.Debug("\tOnModelCreating");
if (_mapping != null)
{
_log.TraceFormat("\t\tMapping : {0}", _mapping.GetType().Name);
_mapping.ConfigureModelBuilder(modelBuilder);
}
base.OnModelCreating(modelBuilder);
}