I am not sure if this a problem with my Fluent configuration or some logic in my thinking.
Basically I have a Person class from which I have two inherited classes, Author and Borrower (it's a library system). The mapping I have is.
public class PersonMap : ClassMap<Person>
{
public PersonMap()
{
Id(x => x.Id, "id");
Map(x => x.Name, "name");
// Subclasses
AddPart(new AuthorMap());
AddPart(new BorrowerMap());
}
}
public class AuthorMap : JoinedSubClassPart<Author>
{
public AuthorMap() : base("person_id")
{
Map(x => x.Country, "country");
HasMany(x => x.Books).Cascade.All().WithKeyColumn("book_id");
}
}
public class BorrowerMap : JoinedSubClassPart<Borrower>
{
public BorrowerMap() : base("person_id")
{
Map(x => x.UserName, "user_name");
HasMany(x => x.Schedule).Cascade.SaveUpdate().WithKeyColumn("borrower_id");
}
}
Now if I run the HQL "FROM Author a ORDER BY a.Name" it will return a list of all Author and Borrower entities where I obviously just want a list of authors. Please feel free to set me straight on this.
A few things to try:
WithTableName("Author")
person_id
the key column on each subclass table? If not, change base("person_id")
to base("key column name")
For example, I just tested a very similar query with the following mappings:
public class DigitalFreeSubscriptionMap : JoinedSubClassPart<DigitalFreeSubscription>
{
public DigitalFreeSubscriptionMap()
: base("DigitalFreeSubscriptions")
{
WithTableName("DigitalFreeSubscriptions");
...
and
public class FreeSubscriptionMap : JoinedSubClassPart<FreeSubscription>
{
public FreeSubscriptionMap()
: base("FreeSubscriptions")
{
WithTableName("FreeSubscriptions");
...
Both are subclasses of Subscription
. In the database I tested on there are 1700 DigitalFreeSubscriptions while there are over a million FreeSubscripions (and other kinds of subscriptions). The HQL query " FROM DigitalFreeSubscripion
" returned 1700 results.
Per request, the top of the SubscriptionMap:
public class SubscriptionMap : AuditableClassMap<Subscription>
{
public SubscriptionMap()
{
WithTable("Subscriptions");
Id(x => x.Id, "Subscriptions");
AddPart(new FreeSubscriptionMap());
AddPart(new DigitalFreeSubscriptionMap());
// More sublass mappings and then the field mappings
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