I don't see a problem with your child referencing the parent with the parent
being a base class. As long as Stage is mapped, and it contains the
collection mapping for Estimates, then you're golden. From memory it'd be
something like this:public class StageMap : ClassMap<Stage>
{
Id(x=>x.Id).AsYourIdType().Etc();
WithTable("Stages");
Map(x=>x.StartingDate);
*
HasMany(x=>x.Estimates).AsSet/Bag/List/Map().Inverse().KeyColumnName("StageID").Cascade().AllDeleteOrphan();
*
}
And the estimate map would look something like:
public class EstimateMap: ClassMap<Estimate>
{
I don't see a problem with your child referencing the parent with the parent
being a base class. As long as Stage is mapped, and it contains the
collection mapping for Estimates, then you're golden. From memory it'd be
something like this:public class StageMap : ClassMap<Stage>
{
Id(x=>x.Id).AsYourIdType().Etc();
WithTable("YourTableName")
Map(x=> x.PerformancePeriod);
*References(x=>x.Stage).ColumnName("StageID").Cascade.SaveUpdate();*
}
I've bolded the sections you'd want to look at more closely
Are you having problems with a similar mapping? If so, could you post what
your mapping looks like?
On Tue, Jun 16, 2009 at 6:41 PM, Jon <[email protected]> wrote:
>
> Is there a way for a an item in a collection (a "many" in a one-to-
> many relationship) to reference a base class of it's containing object
> (the "one", so to speak =P)? Here's a simplified example to
> demonstrate what I'm thinking:
>
>
> public abstract class Stage : Entity {
> DateTime StartingDate { get; set; }
> IList<Estimate> Estimates { get; private set; }
> // ... and much much more ...
> }
> public class DesignStage : Stage { /* ... */ }
> public class ConstructionStage : Stage { /* ... */ }
>
> public class Estimate : Entity {
> public int PerformancePeriod { get; set; }
>
> // this is what it looks like now:
> public DateTime CompletionDate(DateTime startingDate) {
> return startingDate.AddDays(PerformancePeriod);
> }
>
> // and this is what I'm hoping for:
> public Stage Stage { get; set; }
> public DateTime CompletionDate() {
> return Stage.StartingDate.addDays(PerformancePeriod);
> }
> }
>
>
> Do I need to create DesignEstimate and ConstructionEstimate classes
> for something like this to work? e.g.
>
> public abstract class Estimate : Entity
> {
> public int PerformancePeriod { get; set; }
> protected abstract Stage Stage { get; }
> public DateTime CompletionDate()
> {
> return Stage.StartingDate.AddDays(PerformancePeriod);
> }
> }
> public class DesignEstimate : Estimate
> {
> public DesignStage Stage { get; set; }
> }
> public class ConstructionEstimate : Estimate
> {
> public ConstructionStage Stage { get; set; }
> }
>
>
> Any ideas would be greatly appreciated. Thanks.
>
> Jon
> >
>
--
- Hudson
http://www.bestguesstheory.com
http://twitter.com/HudsonAkridge
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