Hi there,

I'm kind of newbie in NHibernate and have a question regarding collections vs discriminator:

I have three classes, Budget, BudgetGroup and BudgetRecord - they are organized as follows:

Budget contains a list of BudgetGroup and BudgetGroup contains a list of BudgetRecord, ie. a Budget can contain many BudgetGroups which again can contain several BudgetRecords.

BudgetGroup is either of income type or expense type, determined by field BudgetGroupType.

Now... Is it possible to have NHibernate load a BudgetGroup into one collection(of BudgetGroup) if its of type Income and into another collection(of BudgetGroup) if its of type Expense?

In native English: I would like to load a bunch of BudgetGroup's into two collections(of BudgetGroup) based on the kind of BudgetGroup(Income or Expense)?

Yep, you can always define two BudgetGroups, BudgetGroupExpense and BudgetGroupIncome and use a discriminator value - but can it be done without having to define two different classes, basically identical?

Yes, you can use the where='' in your collection element. See here.