Fluent NHibernate - joined a subclass of ForeignKey Name

Question

I turn to Fluent NHibernate - the only problem I have encountered so far is that you cannot specify a foreign key name in a unified subclass mapping.

Does anyone have a solution for this or a workaround?

I found this post , but the sentence was clearly not added to the code.

I wish I couldn’t configure the code myself.

Any help would be great ...

Example:

public class Product { public string Name { get; set; } } public class Hammer : Product { public string Description { get; set; } } public class ProductMap : ClassMap<Product, long> { public ProductMap() { Polymorphism.Implicit(); Map(x => x.Name); } } public class HammerMap : SubclassMap<Hammer> { public HammerMap() { Extends<Product>(); } } 

This generates something like:

 <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" default-access="field.camelcase-underscore" auto-import="false" default-cascade="none" default-lazy="true"> <class xmlns="urn:nhibernate-mapping-2.2" dynamic-insert="true" dynamic-update="true" mutable="true" polymorphism="implicit" optimistic-lock="version" name="Domain.Product, Domain" table="Product"> <id name="Id" type="System.Int64"> <column name="Id" /> <generator class="native"> <param name="sequence">ProductId</param> </generator> </id> <property name="Name" type="System.String"> <column name="Name" /> </property> <joined-subclass name="Domain.Hammer, Domain" table="Hammer"> <key> <column name="Product_Id" /> </key> <property name="Description" type="System.String"> <column name="Description" /> </property> </joined-subclass> </class> </hibernate-mapping> 

Note that there is no foreign key name in the hbm mapping file, as in:

 <joined-subclass name="Domain.Hammer, Domain" table="Hammer"> <key column="Product_Id" foreign-key="FK_Hammer_Product"/> </joined-subclass> 

Answer 1

Try something like this

 public class JoinedSubclassForeignKeyConvention : IJoinedSubclassConvention { public void Apply(IJoinedSubclassInstance instance) { instance.Key.ForeignKey(string.Format("FK_{0}_{1}", instance.EntityType.Name, instance.Type.Name)); } }