NHibernate - Could not compile the mapping document

Question

User-626088549 posted

Hey everyone,

I'm working through a tutorial which uses an older version of NHibernate. I'm trying to use version 3.1.0. However, I get the following error: Could not compile the mapping document: Agathas.Storefront.Repository.NHibernate.Mapping.Basket.hbm.xml. The inner exception of the error is: Could not find the property 'Items', associated to the field '_items', in class 'Agathas.Storefront.Model.Basket.Basket'.

Here's the full stack trace:

NHibernate.MappingException was unhandled by user code
Message=Could not compile the mapping document: Agathas.Storefront.Repository.NHibernate.Mapping.Basket.hbm.xml
Source=NHibernate
StackTrace:
at NHibernate.Cfg.Configuration.LogAndThrow(Exception exception) in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Cfg\Configuration.cs:line 342
at NHibernate.Cfg.Configuration.AddDeserializedMapping(HbmMapping mappingDocument, String documentFileName) in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Cfg\Configuration.cs:line 530
at NHibernate.Cfg.Configuration.AddValidatedDocument(NamedXmlDocument doc) in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Cfg\Configuration.cs:line 499
at NHibernate.Cfg.Configuration.ProcessMappingsQueue() in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Cfg\Configuration.cs:line 1832
at NHibernate.Cfg.Configuration.AddDocumentThroughQueue(NamedXmlDocument document) in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Cfg\Configuration.cs:line 1823
at NHibernate.Cfg.Configuration.AddXmlReader(XmlReader hbmReader, String name) in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Cfg\Configuration.cs:line 1816
at NHibernate.Cfg.Configuration.AddInputStream(Stream xmlInputStream, String name) in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Cfg\Configuration.cs:line 632
at NHibernate.Cfg.Configuration.AddResource(String path, Assembly assembly) in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Cfg\Configuration.cs:line 670
at NHibernate.Cfg.Configuration.AddAssembly(Assembly assembly) in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Cfg\Configuration.cs:line 763
at NHibernate.Cfg.Configuration.AddAssembly(String assemblyName) in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Cfg\Configuration.cs:line 746
at Agathas.Storefront.Repository.NHibernate.SessionFactory.Init() in C:\AspPatterns\Agathas.Storefront\Agathas.Storefront.Repository.NHibernate\SessionFactory.cs:line 18
at Agathas.Storefront.Repository.NHibernate.SessionFactory.GetSessionFactory() in C:\AspPatterns\Agathas.Storefront\Agathas.Storefront.Repository.NHibernate\SessionFactory.cs:line 28
at Agathas.Storefront.Repository.NHibernate.SessionFactory.GetNewSession() in C:\AspPatterns\Agathas.Storefront\Agathas.Storefront.Repository.NHibernate\SessionFactory.cs:line 35
at Agathas.Storefront.Repository.NHibernate.SessionFactory.GetCurrentSession() in C:\AspPatterns\Agathas.Storefront\Agathas.Storefront.Repository.NHibernate\SessionFactory.cs:line 46
at Agathas.Storefront.Repository.NHibernate.Repositories.Repository`2.FindAll() in C:\AspPatterns\Agathas.Storefront\Agathas.Storefront.Repository.NHibernate\Repositories\Repository.cs:line 43
at Agathas.Storefront.Services.Implementations.ProductCatalogService.GetAllCategories() in C:\AspPatterns\Agathas.Storefront\Agathas.Storefront.Services\Implementations\ProductCatalogService.cs:line 90
at Agathas.Storefront.Controllers.Controllers.ProductCatalogBaseController.GetCategories() in C:\AspPatterns\Agathas.Storefront\Agathas.Storefront.Controllers\Controllers\ProductCatalogBaseController.cs:line 25
at Agathas.Storefront.Controllers.Controllers.HomeController.Index() in C:\AspPatterns\Agathas.Storefront\Agathas.Storefront.Controllers\Controllers\HomeController.cs:line 26
at lambda_method(Closure , ControllerBase , Object[] )
at System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters)
at System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters)
at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClassd.<InvokeActionMethodWithFilters>b__a()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation)
InnerException: NHibernate.PropertyNotFoundException
Message=Could not find the property 'Items', associated to the field '_items', in class 'Agathas.Storefront.Model.Basket.Basket'
Source=NHibernate
AccessorType=_items
PropertyName=Items
StackTrace:
at NHibernate.Properties.FieldAccessor.GetGetter(Type theClass, String propertyName) in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Properties\FieldAccessor.cs:line 70
at NHibernate.Util.ReflectHelper.GetGetter(Type theClass, String propertyName, String propertyAccessorName) in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Util\ReflectHelper.cs:line 112
at NHibernate.Util.ReflectHelper.ReflectedPropertyClass(Type theClass, String name, String access) in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Util\ReflectHelper.cs:line 150
at NHibernate.Cfg.XmlHbmBinding.CollectionBinder.GetPropertyType(Type containingType, String propertyName, String propertyAccess) in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Cfg\XmlHbmBinding\CollectionBinder.cs:line 892
at NHibernate.Cfg.XmlHbmBinding.CollectionBinder.BindCollection(ICollectionPropertiesMapping collectionMapping, Collection model, String className, String path, Type containingType, IDictionary`2 inheritedMetas) in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Cfg\XmlHbmBinding\CollectionBinder.cs:line 232
at NHibernate.Cfg.XmlHbmBinding.CollectionBinder.CreateBag(HbmBag bagMapping, String prefix, String path, PersistentClass owner, Type containingType, IDictionary`2 inheritedMetas) in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Cfg\XmlHbmBinding\CollectionBinder.cs:line 85
at NHibernate.Cfg.XmlHbmBinding.CollectionBinder.Create(ICollectionPropertiesMapping collectionMapping, String className, String propertyFullPath, PersistentClass owner, Type containingType, IDictionary`2 inheritedMetas) in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Cfg\XmlHbmBinding\CollectionBinder.cs:line 25
at NHibernate.Cfg.XmlHbmBinding.PropertiesBinder.Bind(IEnumerable`1 properties, Table table, IDictionary`2 inheritedMetas, Action`1 modifier, Action`1 addToModelAction) in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Cfg\XmlHbmBinding\PropertiesBinder.cs:line 100
at NHibernate.Cfg.XmlHbmBinding.PropertiesBinder.Bind(IEnumerable`1 properties, IDictionary`2 inheritedMetas, Action`1 modifier) in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Cfg\XmlHbmBinding\PropertiesBinder.cs:line 52
at NHibernate.Cfg.XmlHbmBinding.PropertiesBinder.Bind(IEnumerable`1 properties, IDictionary`2 inheritedMetas) in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Cfg\XmlHbmBinding\PropertiesBinder.cs:line 47
at NHibernate.Cfg.XmlHbmBinding.RootClassBinder.Bind(HbmClass classSchema, IDictionary`2 inheritedMetas) in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Cfg\XmlHbmBinding\RootClassBinder.cs:line 59
at NHibernate.Cfg.XmlHbmBinding.MappingRootBinder.AddRootClasses(HbmClass rootClass, IDictionary`2 inheritedMetas) in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Cfg\XmlHbmBinding\MappingRootBinder.cs:line 83
at NHibernate.Cfg.XmlHbmBinding.MappingRootBinder.AddEntitiesMappings(HbmMapping mappingSchema, IDictionary`2 inheritedMetas) in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Cfg\XmlHbmBinding\MappingRootBinder.cs:line 42
at NHibernate.Cfg.XmlHbmBinding.MappingRootBinder.Bind(HbmMapping mappingSchema) in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Cfg\XmlHbmBinding\MappingRootBinder.cs:line 29
at NHibernate.Cfg.Configuration.AddDeserializedMapping(HbmMapping mappingDocument, String documentFileName) in d:\CSharp\NH\NH\nhibernate\src\NHibernate\Cfg\Configuration.cs:line 522

The web.config:

  <configSections>
    <section name="hibernate-configuration" type="NHibernate.Cfg.ConfigurationSectionHandler, NHibernate"/>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
  </configSections>

    <hibernate-configuration xmlns="urn:nhibernate-configuration-2.2">
        <session-factory name="NHibernate.Test">
            <property name="connection.driver_class">
                NHibernate.Driver.SqlClientDriver
            </property>
            <property name="connection.connection_string">
                Data Source=*****;Initial Catalog=Shop;Integrated Security=True
            </property>
            <property name="adonet.batch_size">10</property>
            <property name="show_sql">true</property>
            <property name="dialect">NHibernate.Dialect.MsSql2008Dialect</property>
            <property name="use_outer_join">true</property>
            <property name="command_timeout">60</property>
            <property name="query.substitutions">true 1, false 0, yes 'Y', no 'N'</property>
            <property name="proxyfactory.factory_class">
                NHibernate.ByteCode.LinFu.ProxyFactoryFactory, NHibernate.ByteCode.LinFu
            </property>
        </session-factory>
    </hibernate-configuration>

The mapping file:

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
    namespace="Agathas.Storefront.Model.Basket"
        assembly="Agathas.Storefront.Model">

    <class name="Basket" table="Baskets" lazy="false" >

        <id  name="Id" column="BasketId" type="guid">
            <generator class="guid" />
        </id>

        <bag name="Items" access="field.camelcase-underscore" inverse="true"
             cascade="all-delete-orphan" lazy="true" >
            <key column="BasketId"/>
            <one-to-many class="BasketItem"></one-to-many>
        </bag>

        <many-to-one access="field.camelcase-underscore" name="DeliveryOption"
                     class="Agathas.Storefront.Model.Shipping.DeliveryOption"
                     column="DeliveryOptionId"
                     not-null="true"/>
    </class>

</hibernate-mapping>

and finally, the class itself:

using System;
using System.Collections.Generic;
using System.Linq;
using Agathas.Storefront.Infrastructure.Domain;
using Agathas.Storefront.Model.Products;
using Agathas.Storefront.Model.Shipping;

namespace Agathas.Storefront.Model.Basket
{
    public class Basket : EntityBase<Guid>, IAggregateRoot
    {
        private IList<BasketItem> _items;
        private IDeliveryOption _deliveryOption;

        public Basket()
        {
            _items = new List<BasketItem>();
            _deliveryOption = new NullDeliveryOption();
        }

        public int NumberOfItems
        {
            get { return _items.Sum(i => i.Qty); }
        }

        public decimal BasketTotal
        {
            get { return ItemsTotal + DeliveryCost(); }
        }

        public decimal ItemsTotal
        {
            get { return _items.Sum(i => i.Qty * i.Product.Price); }
        }

        public void Add(Product product)
        {
            if (BasketContainsAnItemFor(product))
                GetItemFor(product).IncreaseItemQtyBy(1);
            else
                _items.Add(BasketItemFactory.CreateItemFor(product, this));
        }

        public BasketItem GetItemFor(Product product)
        {
            return _items.Where(i => i.Contains(product)).FirstOrDefault();
        }

        private bool BasketContainsAnItemFor(Product product)
        {
            return _items.Any(i => i.Contains(product));
        }

        public void Remove(Product product)
        {
            if (BasketContainsAnItemFor(product))
            {
                _items.Remove(GetItemFor(product));
            }
        }

        public void ChangeQtyOfProduct(int qty, Product product)
        {
            if (BasketContainsAnItemFor(product))
            {
                GetItemFor(product).ChangeItemQtyTo(qty);
            }
        }

        public int NumberOfItemsInBasket()
        {
            return _items.Sum(i => i.Qty);
        }

        public IEnumerable<BasketItem> Items()
        {
            return _items;
        }

        public decimal DeliveryCost()
        {
            return DeliveryOption.GetDeliveryChargeForBasketTotalOf(ItemsTotal);
        }

        public IDeliveryOption DeliveryOption
        {
            get { return _deliveryOption; }
        }

        public void SetDeliveryOption(IDeliveryOption deliveryOption)
        {
            _deliveryOption = deliveryOption;
        }

        protected override void Validate()
        {
            if (DeliveryOption == null)
                base.AddBrokenRule(BasketBusinessRules.DeliveryOptionRequired);

            foreach (BasketItem item in this.Items())
            {
                if (item.GetBrokenRules().Count() > 0)
                    base.AddBrokenRule(BasketBusinessRules.ItemInvalid);
            }
        }
    }

}

_items is a private field, which for some reason is causing the problem. Any ideas where I'm going wrong, here?