This is NH specific, but anyway….please cross post on nhusers
A solution is to use a formula in the ‘composite-element mapping’ for the ‘duplicated’ property In FNH lingo (to avoid magic strings) inside component mapping c.Map(x => x. RegionName).Formula(ReflectionHelper.GetProperty<Money>(x => x. RegionName).Name); => <property name="RegionName" column=” RegionName” formula=" RegionName " /> Inside parent ‘composite-element’ element HTH Morten _____ From: Martin Nilsson [mailto:mffmar...@gmail.com] Sent: Saturday, December 05, 2009 1:32 PM To: fluent-nhibernate@googlegroups.com Subject: [fluent-nhib] Mapping a dictionary with components Hi, I have a dictionary field in my Product class that contains prices (Money class) per region. In other words, a dictionary containg Value Objects. I can save the prices with correct region and amount but when I read them from the database then I can't get the region name (Money.RegionName) to map correctely. The Money.Amount is mapped correctely though. This is my setup. public class ProductMap : ClassMap<Product> { public ProductMap() { Id(x => x.Id); HasMany(x => x.Prices).Access.CamelCaseField().Cascade.All().AsMap(key => key.RegionName) .Component(desc => desc.Map(x => x.Amount)); } } public sealed class Money : IEquatable<Money>, IComparable, IComparable<Money> { private readonly string regionName; private readonly decimal amount; public Money() : this(0, new RegionInfo(CultureInfo.CurrentCulture.LCID)) { } public Money(decimal amount, string regionName) : this(amount, new RegionInfo(regionName)) { } public string RegionName { get { return regionName; } } public decimal Amount { get { return amount; } } } Map part in hbm file: <map access="field.camelcase" cascade="all" name="Prices" mutable="true"> <key> <column name="Product_id" /> </key> <index type="System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"> <column name="RegionName" /> </index> <composite-element class="Money, Domain, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null"> <property access="field.camelcase" name="Amount" type="System.Decimal, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"> <column name="Amount" /> </property> </composite-element> </map> If I change to this (adding map of region name in component): HasMany(x => x.Prices).Access.CamelCaseField().Cascade.All().AsMap(key => key.RegionName) .Component(desc => { desc.Map(x => x.Amount).Access.CamelCaseField(); desc.Map(x => x.RegionName).Access.CamelCaseField(); }); Then I get error: [MappingException: Repeated column in mapping for collection: Product.Prices column: RegionName] NHibernate.Mapping.Collection.CheckColumnDuplication(ISet`1 distinctColumns, IEnumerable`1 columns) in d:\OSS\NHibernate 2.1\nhibernate\src\NHibernate\Mapping\Collection.cs:615 I have searched for dictionary with components examples but only found for set. For example "7.2. Collections of dependent objects", https://www.hibernate.org/hib_docs/nhibernate/html/components.html Any hints? -- You received this message because you are subscribed to the Google Groups "Fluent NHibernate" group. To post to this group, send email to fluent-nhibern...@googlegroups.com. To unsubscribe from this group, send email to fluent-nhibernate+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/fluent-nhibernate?hl=en. -- You received this message because you are subscribed to the Google Groups "Fluent NHibernate" group. To post to this group, send email to fluent-nhibern...@googlegroups.com. To unsubscribe from this group, send email to fluent-nhibernate+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/fluent-nhibernate?hl=en.
