Fluent NHibernate Automapping with abstract base class
Given the classes below:
public class Address : Place
{
public virtual string Street { get; set; }
public virtual int Number { get; set; }
public override string WhereAmI
{
get { string.Format("{0} {1}", Street , Number); }
}
}
public abstract class Place : DomainEntity
{
public abstract string WhereAmI { get; }
}
When I use this mapping:
var autoMap = AutoMap.AssemblyOf<Party>()
.Override<Place>(map => map.IgnoreProperty(p => p.WhereAmI))
.Override<Address>(map => map.IgnoreProperty(p => p.WhereAmI))
.Where(type => type.Namespace != null && type.Namespace.Contains("Models"));
I still get the error: Could not find a setter for property 'WhereAmI' in class 'Address'
Things I did:
Is there any way to get this to work other then to use an Interface?
I tried tracking down in the FluentNHibernate code exactly why the IgnoreProperty seems to break down when the property being ignored is coming from a base class, but ran out of time. It seems to work fine if the get-only property is not coming from a base class.
Anyway, the solution to your situation seems to be to create a custom IAutomappingConfiguration by inheriting from DefaultAutomappingConfiguration. See this stack overflow answer: How can I create a Fluent NHibernate Convention that ignores properties that don't have setters.
Here's the custom automapping configuration that I used successfully to automap the example entity you provided:
protected class CustomConfiguration : DefaultAutomappingConfiguration
{
public override bool ShouldMap (Member member)
{
if (member.IsProperty && member.IsPublic && !member.CanWrite)
{
return false;
}
return base.ShouldMap(member);
}
public override bool ShouldMap(Type type)
{
return type.Namespace != null && type.Namespace.Contains("Models");
}
}
And then its use:
var autoMap = AutoMap
.AssemblyOf<DomainEntity>(new CustomConfiguration());
Note that the Where clause in your example had to move into the custom configuration class as its not allowed to be chained if you are using a custom configuration instance.
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