Mapping a Component inside a Component Collection

Question

I'm trying to map a value object collection where these contain other value objects but am getting the below exception.

nHibernate Exception:

 ----> NHibernate.PropertyNotFoundException : Could not find a getter for property '_timeAtAddress' in class 'CustomerAddress'

Domain:

public class CustomerAddress
{
    private TimePeriod _timeAtAddress;

    protected CustomerAddress() { }

    public CustomerAddress(TimePeriod timeAtAddress)
    {
        _timeAtAddress = timeAtAddress;
    }

    public TimePeriod TimeAtAddress { get { return _timeAtAddress; } }
}

public class TimePeriod
{
    private readonly int _months;
    private readonly int _years;

    protected TimePeriod() { }

    public TimePeriod(int months, int years)
    {
        _months = months;
        _years = years;
    }

    public int Months { get { return _months; } }
    public int Years { get { return _years; } }
}

nHibernate Mapping:

contact.HasMany<CustomerAddress>(Reveal.Member<Contact>("_customerAddresses"))
    .Schema(...)
    .Table(...)
    .KeyColumn(...)
    .AsBag()
    .Not.LazyLoad()
    .Component(address =>
    {
        .
        .
        .

        address.Component(Reveal.Member<CustomerAddress, TimePeriod>("_timeAtAddress"), timeAtAddress =>
        {
            timeAtAddress.Map(Reveal.Member<TimePeriod>("_years")).Column("TIME_YEARS");
            timeAtAddress.Map(Reveal.Member<TimePeriod>("_months")).Column("TIME_MONTHS");
        });
    });

Had a quick look at Access but can't seem to figure out where to set that up for components. Can you help?

Why are you adding the component in the HasMany relation? Have you tried only call a reference to a Address? — Najera, Apr 30 '15 at 18:10
Im asuming you don't need to use the `Component` method in the `HasMany` relation, just guessing you should add only the address reference. Just give it a try. — Najera, May 01 '15 at 17:07
Wouldn't that force the addresses to be mapped as proper entities instead of value objects? — J Fernandes, May 07 '15 at 08:30

score 3 · Answer 1 · answered May 07 '15 at 13:39

3

Rather than configuring FluentNHibernate to set the private field, shouldn't you be telling it to use the constructor argument?

My gut feeling is that the mistake is here:

address.Component(Reveal.Member<CustomerAddress, TimePeriod>("_timeAtAddress")

Where you're telling it to use the field _timeAtAddress.

answered May 07 '15 at 13:39

Richiban

5,569
3
30
42

Could you show a mapping example using the ctor please? – J Fernandes May 07 '15 at 15:18

score 1 · Accepted Answer · answered May 07 '15 at 10:41

1

The only way I managed to move forward (using the private field) was to set a global Access.Field convention.

.Mappings(m => m.FluentMappings.AddFromAssemblyOf<Customer>() .Conventions.Add(DefaultAccess.Field()))

answered May 07 '15 at 10:41

J Fernandes

176
2
7

Mapping a Component inside a Component Collection

2 Answers2