Hi,
I have a base class with an abstract component represented by an interface:
public abstract class BaseClass
{
public abstract ICustomComponent CustomComponent { get; }
}
Then, I have several subclasses that provide their specific concrete
intances (to achieve diferent behaviors) using this abstract property; note
that it could be null:
public class FirstClass
{
public override ICustomComponent CustomComponent {
get {
if (customComponent == null) customComponent = new
FirstConcreteCustomComponent();
return customComponent;
}
}
}
public class SecondClass
{
public override ICustomComponent CustomComponent {
get {
if (customComponent == null) customComponent = new
SecondConcreteCustomComponent();
return customComponent;
}
}
}
public class ThirdClass
{
public override ICustomComponent CustomComponent {
get { return null; }
}
}
I would like to map this set of classes using table-per-subclass inheritance
mapping.
Is it possible? How can I do it?
I have wrote some mappings that let me persist a FirstClass entity, but when
I try to get it from the DB it yells:
"Cannot instantiate abstract class or interface: ICustomComponent"
Regards,
Germán Schuager
blog.schuager.com
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