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POsimple joined-subclass example tries to update the identity column of the base table
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I must be missing something very important in the concept to get this error so any help appreciated. I get ----> System.Data.SqlClient.SqlException : Cannot update identity column 'ProductID'. when i run this <pre><code> var tblEvent = session.Load<TblEvent>(17); tblEvent.Code+= " - test update"; using (var tran = session.BeginTransaction()) { session.SaveOrUpdate(tblEvent); tran.Commit(); } </code></pre> The load works correctly and i can inspect all the properties but the update fails. Heres the mapping file <pre><code><hibernate-mapping namespace="Booking.BLL" assembly="Booking.BLL" xmlns="urn:nhibernate-mapping-2.2" > <class name="TblProduct" table="tblProduct" schema="dbo"> <id name="_productID" access="field" column="ProductID" type="Int32" > <generator class="native" /> </id> <property name="Active" type="Boolean" not-null="true" /> <property name="AllowBackOrder" type="Boolean" not-null="true" /> <property name="BuyY" type="Int32" precision="10" /> <property name="BuyYQty" type="Int32" precision="10" /> <property name="CategoryID" type="Int32" precision="10" /> <property name="Code" type="String" length="50" /> <property name="ColourID" type="Int32" precision="10" /> <property name="ColourNameOverride" type="String" length="250" /> <property name="Cost" type="Decimal" precision="10" not-null="true" /> <property name="CreatedBy" type="Int32" precision="10" /> <property name="CreatedDate" type="DateTime" /> <property name="CustomSort1" type="Int32" precision="10" /> <property name="CustomSort2" type="Int32" precision="10" /> <property name="CustomSort3" type="Int32" precision="10" /> <property name="DefaultImageID" type="Int32" precision="10" /> <property name="Depth" type="Decimal" precision="10" not-null="true" /> <property name="DispatchCategoryID" type="Int32" precision="10" /> <property name="DisplayIfNoStock" type="Boolean" not-null="true" /> <property name="GetXFree" type="Int32" precision="10" /> <property name="GetXPercentDiscount" type="Decimal" precision="6" /> <property name="Height" type="Decimal" precision="10" not-null="true" /> <property name="IsFavourite" type="Boolean" not-null="true" /> <property name="IsFeatured" type="Boolean" not-null="true" /> <property name="IsInSite" type="Int32" precision="10" /> <property name="IsSpecial" type="Boolean" not-null="true" /> <property name="Keywords" type="String" length="250" /> <property name="LongDescription" length="2147483647" /> <property name="LongDescription2" length="2147483647" /> <property name="LongDescription3" length="2147483647" /> <property name="ManufacturerID" type="Int32" precision="10" /> <property name="Name" type="String" length="250" not-null="true" /> <property name="NoStockMessage" type="String" length="250" /> <property name="OrderRanking" type="Int32" precision="10" /> <property name="ParentID" type="Int32" precision="10" /> <property name="Price" type="Decimal" precision="10" not-null="true" /> <property name="PriceMember" type="Decimal" precision="10" /> <property name="PriceRRP" type="Decimal" precision="10" /> <property name="PriceSpecial" type="Decimal" precision="10" /> <property name="PromotionID" type="Int32" precision="10" /> <property name="RefExt" type="String" length="250" /> <property name="SellBundledOnly" type="Boolean" /> <property name="Sex" type="Int32" precision="10" /> <property name="ShortDescription" type="String" length="500" not-null="true" /> <property name="Size" type="String" length="50" /> <property name="SizeID" type="Int32" precision="10" /> <property name="SizeNameOverride" type="String" length="250" /> <property name="SizeUnit" type="String" length="10" /> <property name="SpecialEnd" type="DateTime" /> <property name="SpecialStart" type="DateTime" /> <property name="Status" type="Boolean" not-null="true" /> <property name="Stock" type="Int32" precision="10" not-null="true" /> <property name="SupplierID" type="Int32" precision="10" /> <property name="TaxExempt" type="Boolean" not-null="true" /> <property name="UpdateBy" type="Int32" precision="10" /> <property name="UpdateDate" type="DateTime" /> <property name="WeightKG" type="Decimal" precision="10" not-null="true" /> <property name="Width" type="Decimal" precision="10" not-null="true" /> <many-to-one name="Parent" class="TblProduct" column="ProductID" not-null="true" /> <bag name="TblProducts" table="tblProduct" inverse="true"> <key column="ProductID" /> <one-to-many class="TblProduct" /> </bag> <joined-subclass name="TblEvent" table="tblEvent"> <key column="EventID" /> <property name="AttachmentFileURL" type="String" length="200" /> <property name="GLAccountNo" type="String" length="20" /> <property name="MultiDayEvent" type="Boolean" not-null="true" /> <property name="PromotionActive" type="Boolean" not-null="true" /> <property name="RequiresLogin" type="Boolean" not-null="true" /> <property name="TopLevelCategoryID" type="Int32" precision="10" not-null="true" /> <property name="TotalAllocation" type="Int32" precision="10" not-null="true" /> <bag name="TblSessionTemplates" table="tblSessionTemplate" inverse="true"> <key column="EventID" /> <one-to-many class="TblSessionTemplate" /> </bag> <bag name="TblSessions" table="tblSession" inverse="true"> <key column="EventID" /> <one-to-many class="TblSession" /> </bag> </joined-subclass> </class> </hibernate-mapping> </code></pre>
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simple joined-subclass example tries to update the identity column of the base table
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