LLBLGen v.2.0.0.0 / .NET 2 / Adapter

Hi,

I have the following class model:

Person --> Employee Person --> Customer

So Employee and Customer extend the Person class with additional fields.

Now I want to show a list of all Person objects including their type (Employee or Customer). It should also be possible to filter by Employees or Customers.

How can I do that?

From my point of view, the GetDependingRelatedEntities() method should actually return a list of child objects but the collection is always empty. That's what I've tried so far:

EntityCollection<PersonEntity> persons = new EntityCollection<PersonEntity>(new PersonEntityFactory());
mAdapter.FetchEntityCollection(persons, null);

foreach (PersonEntity person in persons) {
      List<IEntity2> list = person.GetDependingRelatedEntities();
      if (list.Count > 0) 
            Response.Write(person.FirstName); // --> This code line is never reached!!!!
}

I guess I have to specify a prefetch path to load the depending entities. How can I do that?

Are these refrential relations or inheritance relations? If they are refrential relations, then PrefetchPaths would do the trick.

Inheritance relations.. Person is the super class, Employee and Customer are sub classes.

Yeah it would be easy with references..

If it's an inheritance relation as in LLBLGen Pro inheritance, then fetching Persons will fetch all entities that is of type Persons including other subType entities, and you can filter by type. Please refer to the title Filtering on entity type in the manual: "Using the generated code -> Adapter/SelfServicing -> Filtering and sorting -> Advanced filter usage"

Ok. Got it! That's easier than I thought!

With this code I can get the correct type and do a cast.

            foreach (PersonEntity person in persons) {
                string entityType = person.GetInheritanceInfo().OwnerEntityName;

                if (entityType == "EmployeeEntity") {
                    EmployeeEntity test = (EmployeeEntity) person;
                    Response.Write("Employee: " + test.FullName);
                }
            }

Thanks for your help!

KIT wrote:

Ok. Got it! That's easier than I thought!

With this code I can get the correct type and do a cast.

            foreach (PersonEntity person in persons) {
                string entityType = person.GetInheritanceInfo().OwnerEntityName;

                if (entityType == "EmployeeEntity") {
                    EmployeeEntity test = (EmployeeEntity) person;
                    Response.Write("Employee: " + test.FullName);
                }
            }

Thanks for your help!

Not tested but would this simplify things even further?

            foreach (PersonEntity person in persons) {
                EmployeeEntity employee = person as EmployeeEntity

                if (employee != null) {
                    Response.Write("Employee: " + employee.FullName);
                }
            }

Yes that's even better code! I didn't know the "as" operator before..

Thanks!