NHibernate Could not resolve property

Question

I am getting exception NHibernate.QueryException : could not resolve property: InsuredId . I am new to NHibernate and I could not figure it out.

Defining Properties

public virtual int InsuredId { get; set; }
public virtual string Gender { get; set; }
public virtual DateTime DateOfBirth { get; set; }
public virtual string SrId { get; set; }
public virtual string SchoolId { get; set; }
public virtual string Ssn { get; set; }
public virtual DateTime GradDate { get; set; }

Mapping data to properties

public InsuredMap()
{
     ReadOnly();

     Table("Insured");
     Id(x => x.Id, "InsuredId");
     Map(x => x.Gender, "SexCd");
     Map(x => x.DateOfBirth, "BirthDt");
     Map(x => x.SrId, "SIDIdNum");
     Map(x => x.SchoolId, "SchoolIdTxt");
     Map(x => x.Ssn, "SocSecNumTxt");
     Map(x => x.GradDate, "GradMthYrNum");
}

Function to fetch all values

public Entities.Insured GetByInsuredId(int insuredId)
{
    var query = Session.QueryOver<Entities.Insured>()
        .Where(x => x.InsuredId == insuredId)
        .Cacheable()
        .CacheRegion(Constants.EntityCacheRegion);

    return query.SingleOrDefault();
}

Unit Test to test the data

[Test]
public void InsuredMapTest()
{
    var insured = repository.GetByInsuredId(714619800);
    Assert.That(insured.Gender, Is.EqualTo("F"));
}  

Answer 1

Let me be more precise, and extend the Andrew Whitaker comment.

In the mapping you are saying:

Id(x => x.Id, "InsuredId");

Which is information: My entity/class Insured has

Id(            // an identificator, the key
x => x.Id      // represented by the property **Id** (here is the issue)
, "InsuredId") // its DB representation is the column "InsuredId"

Other words, the C# property

public virtual int InsuredId { get; set; }

is not mapped, with the above statement, so it cannot be used for querying

What we can do in the query, to make it working is

var query = Session.QueryOver<Entities.Insured>()
    //.Where(x => x.InsuredId == insuredId)
    .Where(x => x.Id == insuredId)
    ...

And the could not resolve property: InsuredId exception will disappear, because we are using the mapped property Id