fluent nhibernate - Pivot in FluentNhibernate -

i have table structure follows:

create table messageparameters  (     sequenceid              int                 identity(1,1) not null,     messagequeueid          int                 not null,     parametername           varchar(50)         not null,     parametervalue          varchar(300)        not null,      constraint pk_messageparameters primary key clustered(sequenceid) )  create table messagequeue (     sequenceid              int                 identity(1,1) not null,     messagetype             int                 not null,     [status]                int                 default(0) not null,     created                 datetime            default(getdate()) not null,     modified                datetime            default(getdate()) not null,      constraint pk_messagequeue primary key clustered(sequenceid) ) 

what want use subclassing based on messagetype object model. straightforward enough, pivot collection of parameters actual properties on subclass.

for instance, have (sub)class activationemail

public class activationemail : messagebase {     //shared properties member of base class      public string param1 {get; set;}     public string param2 {get; set;}     public string param3 {get; set;} } 

will result in data in messageparameters table above this

parametername                              parametervalue ------------------------------------------ --------------------------------- param1                                     value1 param2                                     value2 param3                                     value3 

i understand have list part of object params , have properties (param1, param2, etc) auto add/update/retrieve data in list, i'm hoping handled within mappings themselves.