That doesn't sound right... I've serialized IUserType before. Let me try to find a sample...
On Mon, Oct 12, 2009 at 5:15 PM, Mike Christensen <[email protected]>wrote: > > Hi - > > The IUserType approach almost works, however I need to mark my type as > [Serializable] which the implementation for IUserType does not allow > for.. You'll get a circular reference detected when serializing the > getters.. > > Guess it's back to the drawing board.. > > Mike > > On Mon, Oct 12, 2009 at 2:17 PM, Mike Christensen <[email protected]> > wrote: > > Hi - The URL you mentioned only seems to contain information about > > persisting enums as strings, which is great since I was wondering > > about that as well (as PostgreSQL users string for enums).. > > > > Can you point me to any relevant information about IUserType and how > > to create a user defined type that persists in the DB (as an integer, > > rather than serialized byte array)? Thanks! > > > > Mike > > > > On Mon, Oct 12, 2009 at 1:23 PM, Mauricio Scheffer > > <[email protected]> wrote: > >> > >> First, consider using System.Decimal instead of your own Price class. > >> If you still need some special feature and absolutely need your own > >> Price class, write a NHibernate IUserType. Here are some sample user > >> types: http://nhforge.org/wikis/howtonh/tags/IUserType/default.aspx > >> > >> On Oct 12, 5:14 pm, Mike Christensen <[email protected]> wrote: > >>> Hi guys - I've been struggling with this one for a while, the scenario > >>> seems very basic but I've spent several hours on this and run into > >>> what seems like NHibernate bugs.. > >>> > >>> Here's the situation. I have a class called "Price" which is > >>> implemented like this: > >>> > >>> [Serializable] > >>> public class Price : IComparable, IFormattable, IComparable<int>, > >>> IEquatable<int> > >>> { > >>> public static implicit operator Price(int cents); > >>> public static implicit operator int(Price price); > >>> public static bool operator ==(Price x, Price y); > >>> public static bool operator !=(Price x, Price y); > >>> public int CompareTo(object obj); > >>> public int CompareTo(int other); > >>> public bool Equals(int other); > >>> } > >>> > >>> As you can see, the compiler will treat Price exactly like an > >>> integer. I can say: > >>> > >>> Price p = 500; //p is $5.00 > >>> > >>> ...as well as compare a Price object to other Price objects or to > >>> ints. > >>> > >>> In ActiveRecord, I'd like to have this: > >>> > >>> [Property(NotNull = true, ColumnType = "Int32")] > >>> public Price VendorFees > >>> { > >>> get { return vendorfees; } > >>> set { vendorfees = value; } > >>> } > >>> > >>> This seems simple enough, and actually the above code works when you > >>> Create or Update a record, however it causes an exception when you > >>> load. Under the covers, this appears to be an NHibernate bug. When > >>> NHibernate hydrates an object, in ReflectionOptimizer.cs there's a > >>> function called GenerateSetPropertyValuesMethod. This method actually > >>> builds IL code (pretty slick) which will loop through the value array > >>> from the database and set it to the appropriate setters on the > >>> object. However, there's a bug in this code that assumes the DB type > >>> and the "setter" type are exactly the same. The setter is never even > >>> called on my object, I just get an exception that says "Cannot cast > >>> Website.Price to System.Int32" (which happens when the IL code is > >>> invoked).. So in my opinion, that's an NHibernate bug however I don't > >>> see them fixing this. > >>> > >>> The work-around I'm exploring is to get NHibernate to hydrate this > >>> column as a "Price" in the first place. The method I'm trying to use > >>> would be to do something like this: > >>> > >>> [Property(NotNull = true, ColumnType = "Website.Price,Website", > >>> SqlType = "integer")] > >>> public Price VendorFees > >>> { > >>> get { return vendorfees; } > >>> set { vendorfees = value; } > >>> } > >>> > >>> I believe this would work, however, Active Record appears to configure > >>> this column as a serializable type and wants to map it to a byte array > >>> in the DB. When AR is building the Insert command, I get an exception > >>> saying the parameter type was bytea but the data was an integer. > >>> > >>> Can anyone point me in the right direction? I'm totally lost on this > >>> one. Thanks!! > >>> > >>> Mike > >> >> > >> > > > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Castle Project Users" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/castle-project-users?hl=en -~----------~----~----~----~------~----~------~--~---
