Hi folks,
The scenario (the example is just an example since our real objects have lots
of extra that gets in the way):
2 classes. Both complex types, one has a field typed as the other. ie.
public class Person
{
private City city;
<property for city here...>
}
To avoid the hit of a subselect in the iBatis map, we do an outer join on
Person and City. So our map looks like this:
<resultMaps>
<resultMap id="Result" class="Person">
<result property="City.Id" column="CITY_ID"/>
<result property="City.Name" column="city_name" />
<result property="City.IsPolluted" column="city_is_polluted" />
<!-- ... other stuff removed -->
</resultMap>
</resultMaps>
The question: Is there some kind of handler I can write so that if the city_id
column is null on the person table I can end up with a null city field on my
Person object? Or can we only handle this by using subselects?
I tried using a type handler, but when it returns null, iBatis kindly creates
an instance of City so it can assign null to Id, Name and IsPolluted.
Much thanks,
Dustin Aleksiuk
