CODEWITHSUNDEEP
c#nhibernate
scojomodena
scojomodena

Reputation: 842

NHibernate doesn't see table, MappingException

I thought I knew my way around NHibernate, but I must be doing something stupid. I have a table/class called Category. When I pull data from my GetAll method, nothing returns, but there are no errors either.

The class is:

namespace Model
{
    [Serializable]
    public partial class Category
    {
        public virtual int Id { get; set; }
        public virtual DateTime CreatedOn { get; set; }
        public virtual DateTime UpdatedOn { get; set; }

        public virtual string Name { get; set; }

        public override bool Equals(object oneObject)
        {
            return oneObject is Category && (this.GetHashCode() == ((Category)oneObject).GetHashCode());
        }

        public override int GetHashCode()
        {
            return Id.ToString().GetHashCode();
        }

    }
}

Mapping file:

<?xml version="1.0" encoding="utf-8"?>
<hibernate-mapping xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" namespace="Model" assembly="Model" xmlns="urn:nhibernate-mapping-2.2">
    <class name="Category" lazy="true" table="`categories`"><!--test only!!-->
        <id name="Id" access="property" column="`category_id`">
            <generator class="native" />
        </id>
    <property name="Name" column="`name`" length="50" />
    </class>
</hibernate-mapping>

If I add a many-to-one reference in another table, then it errors with: An association from the table manufacturer_categories refers to an unmapped class: Model.Category.

It seems obvious to me that NHibernate is not recognizing my mapping file. What stupid thing am I missing?

Upvotes: 0

Views: 320

Answers (2)

Rippo
Rippo

Reputation: 22424

Have you checked that your XML file is marked as an embedded resource?

enter image description here

Upvotes: 1

Mohsen Heydari
Mohsen Heydari

Reputation: 7284

Using full qualified name of the class, may solve the problem

<class name="Modle.Category" lazy="true" table="`categories`">

Also make sure that when configuring Nhibernate you have added the assembly containing Category mapping file

Configuration cfg = new Configuration();
cfg.Configure();

// Add class mappings to configuration object
Assembly mappingAssembly = AssemblyContatingTheCategoryMappingXMLFile;
cfg.AddAssembly(mappingAssembly);

Another hint will be setting the xml file as Embedded Resource on properety tab

Upvotes: 2

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