Fluent Nhibernate Mapping with Column - fluent-nhibernate

Hi i am stuck with one problem while dealing with fluent nhibernate.
My user entity is below
public class UserEntity
{
public virtual int Userid { get; set; }
public virtual CompanyEntity CompanyId { get; set; }
public virtual string Name { get; set; }
public virtual string Email { get; set; }
public virtual string Username { get; set; }
public virtual string Password { get; set;}
public virtual decimal MinLimit { get; set;}
public virtual decimal MaxLimit { get; set;}
public virtual DateTime Birthdate { get; set;}
public virtual RoleEntity Roleid { get; set; }
public virtual int CreatedBy { get; set;}
public virtual DateTime CreatedDate { get; set;}
public virtual bool Active { get; set;}
}
}
and mapping class is as below
public class UserMap : ClassMap
{
public UserMap()
{
Id(x => x.Userid);
References(x => x.CompanyId).Column("CompanyId").Cascade.All();
Map(x => x.Name);
Map(x => x.Email);
Map(x => x.Username);
Map(x => x.Password);
Map(x => x.MinLimit);
Map(x => x.MaxLimit);
Map(x => x.Birthdate);
References(x => x.Roleid).Column("Roleid").Cascade.All();
Map(x => x.CreatedBy);
Map(x => x.CreatedDate);
Map(x => x.Active);
Table("tblUsers");
}
}
Now when ever i am trying to execute my program it gives me error like.
Could not determine type for: ProductPO.Models.Entites.UserEntity, ProductPO, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null, for columns: NHibernate.Mapping.Column(CreatedBy)
My helper class is as below
private static ISessionFactory _sessionFactory;
private static ISessionFactory sessionFactory
{
get
{
if (_sessionFactory == null)
{
initialisationFactory();
}
return _sessionFactory;
}
}
private static void initialisationFactory()
{
try
{
_sessionFactory = Fluently.Configure()
.Database(MsSqlConfiguration.MsSql2005.ConnectionString(#"Server=10.10.10.10;Database=Product;uid=sa;pwd=12345;Trusted_Connection=false;").ShowSql())
.Mappings(m => m.FluentMappings.AddFromAssemblyOf<CompanyEntity>().ExportTo("d:\\"))
.Mappings(m => m.FluentMappings.AddFromAssemblyOf<ModuleEntity>().ExportTo("d:\\"))
.Mappings(m => m.FluentMappings.AddFromAssemblyOf<RoleEntity>().ExportTo("d:\\"))
.Mappings(m => m.FluentMappings.AddFromAssemblyOf<UserEntity>().ExportTo("d:\\"))
.ExposeConfiguration(cfg => new SchemaExport(cfg))
.BuildSessionFactory();
}
catch (Exception e)
{
throw;
}
}
public static ISession OpenSession()
{
return sessionFactory.OpenSession();
}
Thanks in advance

Not sure if this will fix the problem but your mapping class should pass the model type into the base class like this:
public class UserMap : ClassMap<UserEntity>
Also does the CreatedBy column exist in the underlying table?
Could you post the inner exception if there is one....

The most likely cause is that the assembly that is set your UserEntity is not the same as it is defined your UserMap.
Configure your mappings:
Fluently.Configure()
.Database(MsSqlConfiguration.MsSql2005.ConnectionString("{OMITED}").ShowSql())
.Mappings(m => {
AddFromAssemblyOf<UserMap>()
})
.ExposeConfiguration( c =>
new SchemaExport(c)
.Execute(false, true, false)
)
No need to add one to one mapping. This way the Fluent NHibernate search the entire assemblie classes that inherit from ClassMap

Related

Nhibernate SubClass relationship generating wrong SQL

I'm using Table Per Type(TPT) to do inheritance in Nhibernate v3.3.1.4000. I figured out that any SQL for SubClass relationships one-to-many are wrong.
Class:
public class Repasse : Colaboracao
{
public virtual string Descricao { get; set; }
public virtual Decimal ValorRepasse { get; set; }
public virtual DateTime DataInicio { get; set; }
public virtual DateTime DataTermino { get; set; }
[XmlIgnore]
public virtual Usuario UsuarioExecucao { get; set; }
[XmlIgnore]
public virtual Usuario UsuarioMonitoramento { get; set; }
[XmlIgnore]
public virtual IList<RepasseRecebido> RepassesRecebidos { get; set; }
[XmlIgnore]
public virtual IList<RepasseProduto> Produtos { get; set; }
public Repasse()
{
RepassesRecebidos = new List<RepasseRecebido>();
Produtos = new List<RepasseProduto>();
UsuarioExecucao = new Usuario();
UsuarioMonitoramento = new Usuario();
}
}
public class RepasseRecebido : Entidade
{
public virtual string NumNotaAtorizacao { get; set; }
public virtual Decimal ValorTaxaCambio { get; set; }
public virtual DateTime DataRecebimento { get; set; }
public virtual Decimal ValorRecebido { get; set; }
public virtual string Observacao { get; set; }
[XmlIgnore]
public virtual Repasse Repasse { get; set; }
[XmlIgnore]
public virtual List<Download> Downloads { get; set; }
public RepasseRecebido()
{
Repasse = new Repasse();
Downloads = new List<Download>();
}
}
public class RepasseProduto : Entidade
{
public virtual int QtdProduto { get; set; }
public virtual DateTime DataInicio { get; set; }
public virtual DateTime DataTermino { get; set; }
public virtual int QtdBeneficiado { get; set; }
public virtual PublicoBeneficiado PublicoBeneficiado { get; set; }
[XmlIgnore]
public virtual Produto Produto { get; set; }
[XmlIgnore]
public virtual Repasse Repasse { get; set; }
[XmlIgnore]
public virtual IList<RepasseProdutoAtividade> Atividades { get; set; }
public RepasseProduto()
{
Produto = new Produto();
Repasse = new Repasse();
Atividades = new List<RepasseProdutoAtividade>();
}
}
public class RepasseProdutoAtividade : Entidade
{
public virtual DateTime DataInicio { get; set; }
public virtual DateTime DataTermino { get; set; }
public virtual string Descricao { get; set; }
[XmlIgnore]
public virtual RepasseProduto RepasseProduto { get; set; }
public RepasseProdutoAtividade()
{
RepasseProduto = new RepasseProduto();
}
}
Map:
public class RepasseMap : SubclassMap<Repasse>
{
public RepasseMap()
{
Schema(ConfigInstances.ObterSchema("Sigma"));
Table("tblRepasse");
LazyLoad();
KeyColumn("cmpIdRepasse");
Map(x => x.Descricao).Column("cmpDcDescricao");
Map(x => x.ValorRepasse).Column("cmpVlValorRepasse").Not.Nullable();
Map(x => x.DataInicio).Column("cmpDtDataInicio").Not.Nullable();
Map(x => x.DataTermino).Column("cmpDtDataTermino").Not.Nullable();
References(x => x.UsuarioExecucao).Column("cmpIdUsuarioExecucao");
References(x => x.UsuarioMonitoramento).Column("cmpIdUsuarioMonitoramento");
HasMany(x => x.RepassesRecebidos).AsBag().LazyLoad();
HasMany(x => x.Produtos).KeyColumn("cmpIdRepasseProduto").AsBag().LazyLoad();
}
public class RepasseRecebidoMap : ClassMap<RepasseRecebido>
{
public RepasseRecebidoMap()
{
Schema(ConfigInstances.ObterSchema("Sigma"));
Table("tblRecursoRepasse");
LazyLoad();
Id(x => x.Id).GeneratedBy.Identity().Column("cmpIdRecursoRepasse");
Map(x => x.NumNotaAtorizacao).Column("cmpNuAutorizacaoNota").Not.Nullable();
Map(x => x.DataRecebimento).Column("cmpDtDataRecebimento").Not.Nullable();
Map(x => x.ValorRecebido).Column("cmpVlValorRecebido").Not.Nullable();
Map(x => x.ValorTaxaCambio).Column("cmpVlTaxaCambio").Not.Nullable();
Map(x => x.Observacao).Column("cmpDcObservacao");
References(x => x.Repasse).Column("cmpIdRepasse");
HasManyToMany(x => x.Downloads)
.Table("tblRecursoRepasseDownload")
.ParentKeyColumn("cmpIdRecursoRepasse")
.ChildKeyColumn("cmpIdDownload")
.AsBag().LazyLoad().Cascade.SaveUpdate();
}
}
public class RepasseProdutoMap : ClassMap<RepasseProduto>
{
public RepasseProdutoMap()
{
Schema(ConfigInstances.ObterSchema("Sigma"));
Table("tblRepasseProduto");
LazyLoad();
Id(x => x.Id).GeneratedBy.Identity().Column("cmpIdRepasseProduto");
Map(x => x.DataInicio).Column("cmpDtDatainicio").Not.Nullable();
Map(x => x.DataTermino).Column("cmpDtDatatermino").Not.Nullable();
Map(x => x.QtdProduto).Column("cmpInQuantidadeproduto").Not.Nullable();
Map(x => x.QtdBeneficiado).Column("cmpIdQuantidadeBeneficiado").Not.Nullable();
Map(x => x.PublicoBeneficiado).Column("cmpIdPublicoBeneficiado").CustomType(typeof(PublicoBeneficiado));
References(x => x.Produto).Column("cmpIdProduto");
References(x => x.Repasse).Column("cmpIdRepasse");
HasMany(x => x.Atividades).AsBag().LazyLoad();
}
}
public class RepasseProdutoAtividadeMap : ClassMap<RepasseProdutoAtividade>
{
public RepasseProdutoAtividadeMap()
{
Schema(ConfigInstances.ObterSchema("Sigma"));
Table("tblRepasseProdutoAtividade");
LazyLoad();
Id(x => x.Id).GeneratedBy.Identity().Column("cmpIdRepasseProdutoAtividade");
Map(x => x.DataInicio).Column("cmpDtInicio").Not.Nullable();
Map(x => x.DataTermino).Column("cmpDtTermino").Not.Nullable();
Map(x => x.Descricao).Column("cmpDcAtividade").Not.Nullable();
References(x => x.RepasseProduto).Column("cmpIdRepasseProduto");
}
}
}
When I query RepasseProduto then SQL is generated with an issue, the query doesn't findout how to get the Foreign Key name for the one-to-many relationship, as you can see below:
select repasse0_.cmpIdRepasse as cmpIdCol1_5_
repasse0_1_.cmpDtDataCriacao as cmpDtDat2_5_
repasse0_1_.cmpStSituacao as cmpStSit3_5_
repasse0_1_.cmpDcCancelamento as cmpDcCan4_5_
repasse0_1_.cmpIdRecurso as cmpIdRec5_5_
repasse0_.cmpDcDescricao as cmpDcDes2_7_
repasse0_.cmpVlValorRepasse as cmpVlVal3_7_
repasse0_.cmpDtDataInicio as cmpDtDat4_7_
repasse0_.cmpDtDataTermino as cmpDtDat5_7_
repasse0_.cmpIdUsuarioExecucao as cmpIdUsu6_7_
repasse0_.cmpIdUsuarioMonitoramento as cmpIdUsu7_7_
from mre_sigma_dsv.dbo.tblRepasse repasse0_
inner join mre_sigma_dsv.dbo.tblColaboracao repasse0_1_
on repasse0_.cmpIdRepasse=repasse0_1_.cmpIdColaboracao
where (select cast(count(*) as INT)
from mre_sigma_dsv.dbo.tblRepasseProduto produtos1_
where repasse0_.cmpIdRepasse=produtos1_.Repasse_id)>#p0
As you can see the last inner select doesn't find out the name of the foreign key from tblRepasseProduto to tblRepasse, then uses Repasse_id that doesn't represent a valid table field.
What should I do? Am I missing something when mapping my sub-class relation?
Really not sure from where the ghost column comes, but there is other issue in the mapping above. In relations one-to-many vs many-to-one, i.e. in fluent HasMany vs References, there must be/is exactly one column representing that. So we need to use the same (one) column for that and should change the mapping this way.
The RepasseMap : SubclassMap<Repasse>:
public RepasseMap()
{ ...
// was:
// HasMany(x => x.RepassesRecebidos).AsBag().LazyLoad();
// HasMany(x => x.Produtos).KeyColumn("cmpIdRepasseProduto").AsBag().LazyLoad();
// should be
HasMany(x => x.RepassesRecebidos)
.KeyColumn("cmpIdRepasse").AsBag().LazyLoad();
HasMany(x => x.Produtos)
.KeyColumn("cmpIdRepasse").AsBag().LazyLoad();
}
The RepasseRecebidoMap : ClassMap<RepasseRecebido>:
public RepasseRecebidoMap()
{ ...
// the same column representing this relationship in table "tblRecursoRepasse"
References(x => x.Repasse).Column("cmpIdRepasse");
The RepasseProdutoMap : ClassMap<RepasseProduto>:
public RepasseProdutoMap()
{ ...
// the same column representing this relationship in table "tblRepasseProduto"
References(x => x.Repasse).Column("cmpIdRepasse");
If this does not help, could you please send the query you've used and which generated that strange relationship.
Also, in the Mapping snippet above you are nesting the mapping classes ... this is not the right/required way.

Trying to run query for entities when I have Inheritance with fluent Nhibernate

I attempted to extract some common properties to a base class and map with Fluent Nhibernate. In addition, I also attempted to add a second level of inheritance.
//Base entity class
public class EntityBase : IEntityBase
{
public EntityBase()
{
CreatedDate = DateTime.Now;
}
public virtual DateTime? CreatedDate { get; set; }
public virtual int Id { get; set; }
public virtual int Version { get; set; }
}
//Base Entity Mapping
public class EntityBaseMap: ClassMap<EntityBase>
{
public EntityBaseMap()
{
UseUnionSubclassForInheritanceMapping();
Id(x => x.Id);
Version(x => x.Id);
Map(x => x.CreatedDate);
}
}
//first sub class of EntityBase
public class Actuate : EntityBase, IActuate
{
public virtual DateTime? ActivatedOn { get; set; }
}
//Actuate Mapping class
public class ActuateMap : SubclassMap<Actuate>
{
public ActuateMap()
{
Map(x => x.ActivatedOn);
}
}
//Sub class entity
public class Item : Actuate
{
public virtual string Name { get; set; }
public virtual string Description { get; set; }
public virtual decimal UnitPrice { get; set; }
public virtual ItemStatus Status { get; set; }
public virtual Store Store { get; set; }
}
//Item Mapping class
public class ItemMap : SubclassMap<Item>
{
public ItemMap()
{
Abstract();
Map(x => x.Name);
Map(x => x.Description);
Map(x => x.UnitPrice);
Map(x => x.Status);
References(x => x.Store);
}
}
The entity I have discovered has a problem (other relationship issues might exists)
//Store entity Does not inherit from EntityBase or Actuate
public class Store
{
public virtual int Id { get; set; }
public virtual int Version { get; set; }
public virtual string Name { get; set; }
public virtual IEnumerable<Item> Items { get; set; }
}
//Store mapping class
public class StoreMap : ClassMap<Store>
{
public StoreMap()
{
Id(x => x.Id).GeneratedBy.Assigned();
Version(x => x.Version);
Map(x => x.Name);
HasMany(x => x.Items);
}
}
Problem
If I try to run the following query:
//store = is the Store entity I have retrieved from the database and I am trying
//trying to return the items that are associated with the store and are active
store.Items != null && store.Items.Any(item => item.Status == ItemStatus.Active);
I get the following error:
ERROR
Nhibernate.Exceptions.GenericADOException: could not initialize a collection: [SomeDomain.Store.Items#0][SQL: SELECT items0_.StoreId as StoreId1_, items0_.Id as Id1_, items0_.Id as Id10_0_, items0_.CreatedDate as CreatedD2_10_0_, items0_.ActivatedOn as Activate1_11_0_, items0_.Name as Name12_0_, items0_.Description as Descript2_12_0_, items0_.UnitPrice as UnitPrice12_0_, items0_.Status as Status12_0_, items0_.StoreId as StoreId12_0_ FROM [Item] items0_ WHERE items0_.StoreId=?]"}
Inner Exception
"Invalid object name 'Item'."
Now, if I take out the base classes and Item doesn't inherit, and the
Id, Version
columns are part of the Item entity and are mapped in the ItemMap mapping class (with the ItemMap class inheriting from ClassMap<Item> instead, everything works without issue.
NOTE
I have also attempted to add on the StoreMap class unsuccessful.
HasMany(x => x.Items).KeyColumn("Id");
Any thoughts?
if entityBase is just for inheriting common properties then you do not need to map it at all
public class EntityBaseMap<TEntity> : ClassMap<TEntity> where TEntity : EntityBase
{
public EntityBaseMap()
{
Id(x => x.Id);
Version(x => x.Version);
Map(x => x.CreatedDate);
}
}
public class ActuateMap : EntityBaseMap<Actuate> { ... }
Notes:
Versionmapping should map Version property not Id
Version should be readonly in code so nobody accidently alters it
.KeyColumn("Id") is wrong because the column is from the Items table and then it's both the autogenerated id and foreign key. That's not possible nor usefull
usually only classes which are abstract should containt Abstract() in the mapping

Fluent NHibernate mapping IDictionary<string, class> in a smart way

Given these classes:
using System.Collections.Generic;
namespace FluentMappingsQuestion
{
public class Entity
{
public virtual int Id { get; set; }
public virtual IDictionary<string, Property> Properties { get; set; }
}
public class Property
{
public virtual Entity OwningEntity { get; set; }
public virtual string Name { get; set; }
public virtual int Value { get; set; }
public virtual decimal OtherValue { get; set; }
}
}
How can I map them using NHibernate (preferably fluent flavor) so that doing this is possible:
[Test]
public void EntityPropertyMappingTest()
{
using (var session = _factory.OpenSession())
{
var entity = new Entity();
// (#1) I would *really* like to use this
entity.Properties["foo"] = new Property { Value = 42, OtherValue = 42.0M };
session.Save(entity);
session.Flush();
// (#2) I would like the entity below to "update itself"
// on .Save or .Flush. I got it to work with .Load()
Assert.AreEqual(42, entity.Properties["foo"].Value);
Assert.AreEqual(42.0M, entity.Properties["foo"].OtherValue);
Assert.AreEqual("foo", entity.Properties["foo"].Name);
Assert.AreEqual(entity, entity.Properties["foo"].Owner);
}
}
I have almost managed to do this with these mappings:
// class EntityMap : ClassMap<Entity>
public EntityMap()
{
Id(x => x.Id);
HasMany(x => x.Properties)
.Cascade.AllDeleteOrphan()
.KeyColumn("EntityId")
.AsMap(x => x.Name);
}
// class PropertyMap : ClassMap<Property>
public PropertyMap()
{
Id(x => x.Id);
References(x => x.OwningEntity).Column("EntityId");
Map(x => x.Name).Length(32);
Map(x => x.Value);
{
The problems I have:
If I make Entity.Properties .Inverse(), it starts breaking
If I don't make it .Inverse() then NHibernate does: INSERT(Entity), INSERT(Property), UPDATE(Property) instead of just INSERT(Entity), INSERT(Property)
If I make Property.Name .Not.Nullable(), it starts breaking
If I don't make it .Not.Nullable(), I have a hole in my db schema
How should I change my mappings?
I worked around this by specifying this mapping:
HasMany<Property>(Reveal.Member<Entity>("InternalProperties"))
.AsMap(p => p.Name)
.Cascade.AllDeleteOrphan()
.Inverse();
and creating two properties of type IDictionary<string, Property>: Properties and InternalProperties. The first one is a proxy dictionary over the second one, and deals with setting the OwningEntity and Name properties for the Property entries.

query many-to-many nhibernate when only one side is mapped

I have the following entities
public class Client
{
public virtual int Id{get;set;}
public virtual IList<Telephone> Telephones { get; private set; }
}
public class User
{
public virtual int Id{get;set;}
public virtual IList<Telephone> Telephones { get; private set; }
}
public class Telephone
{
public virtual int Id{get;set;}
public virtual string Number { get; set; }
public virtual string Extension { get; set; }
public virtual TelephoneType TelephoneType { get; set; }
}
Client as mapping like this
HasManyToMany<Telephone>(x => x.Telephones)
.Table("tblClientTel")
.ParentKeyColumn("ClientId")
.ChildKeyColumn("TelId")
.LazyLoad()
.Cascade.SaveUpdate();
User as mapping like this
HasManyToMany<Telephone>(x => x.Telephones)
.Table("tblUserTel")
.ParentKeyColumn("UserId")
.ChildKeyColumn("TelId")
.LazyLoad()
.Cascade.SaveUpdate();
And Telephone like this
public TelephoneMap()
{
Table("tblTel");
Id(x => x.Id, "Id");
LazyLoad();
References<TelephoneType>(x => x.TelephoneType, "TypeId")
.Not.Nullable()
.Cascade.None()
.Not.LazyLoad();
Map(x => x.Number, "Number")
.Not.Nullable()
.Length(15);
Map(x => x.Extension, "Extension")
.Nullable()
.Length(10);
}
How can i query for all the telephone entities of a list of client ?
I've tried this
ICriteria criteria = base.CreateCriteria<Client>(null);
return base.CreateCriteria
.SetProjection(Projections.ProjectionList()
.Add(Projections.Property("Telephones"))
)
.Add(Expression.In("Id", clientIds))
.SetFetchMode("Telephones", FetchMode.Eager)
.List<Telephone>();
But it returns the client Id

How to enable LazyLoad in Fluent NHibernate?

I'm testing Fluent NHibernate with NorthWind database. Now, I've created Employee and EmployeeMap class. Source code is like below.
class Employee
public class Employee
{
public virtual int EmployeeID { get; private set; }
public virtual string LastName { get; set; }
public virtual string FirstName { get; set; }
public virtual string Title { get; set; }
public virtual string TitleOfCourtesy { get; set; }
public virtual DateTime? BirthDate { get; set; }
public virtual DateTime? HireDate { get; set; }
public virtual string Address { get; set; }
public virtual string City { get; set; }
public virtual string Region { get; set; }
public virtual string PostalCode { get; set; }
public virtual string Country { get; set; }
public virtual string HomePhone { get; set; }
public virtual string Extension { get; set; }
public virtual string Notes { get; set; }
public virtual Employee ReportsTo { get; set; }
public virtual string PhotoPath { get; set; }
public virtual IList<Territory> Territories{ get; set; }
public Employee()
{
Territories = new List<Territory>();
}
public virtual void AddTerritory(Territory territory)
{
territory.Employees.Add(this);
this.Territories.Add(territory);
}
}
class EmployeeMap
public class EmployeeMap : ClassMap<Employee>
{
public EmployeeMap()
{
Table("Employees");
Id(x => x.EmployeeID);
Map(x => x.LastName);
Map(x => x.FirstName);
Map(x => x.Title);
Map(x => x.TitleOfCourtesy);
Map(x => x.BirthDate);
Map(x => x.HireDate);
Map(x => x.Address);
Map(x => x.City);
Map(x => x.Region);
Map(x => x.PostalCode);
Map(x => x.Country);
Map(x => x.HomePhone);
Map(x => x.Extension);
Map(x => x.Notes);
Map(x => x.PhotoPath);
References(x => x.ReportsTo).Column("ReportsTo").LazyLoad();
HasManyToMany(x => x.Territories)
.Cascade.All()
.Table("EmployeeTerritories")
.ParentKeyColumn("EmployeeID")
.ChildKeyColumn("TerritoryID");
}
}
Then I try to load all employees from database, but all employees have reference object on ReportsTo property.
var sessionFactory = CreateSessionFactory();
using (var session = sessionFactory.OpenSession())
{
using (session.BeginTransaction())
{
Console.WriteLine("All employees");
var emp_ = session.CreateCriteria(typeof(Employee));
var employees = emp_.List<Employee>();
foreach (var employee in employees)
{
Console.WriteLine(employee.FirstName); // every employee has reference object on ReportsTo property here.
}
Console.Write("--------");
}
}
I want to know, what wrong with my code and how to fixed it?
Lazy Load is enabled by default. The reference in ReportsTo is a proxy that will only be loaded from the DB if any property other than the ID is used.
Lazy loading is not enabled by default.
public EmployeeMap()
{
Table("Employees");
LazyLoad();
// etc.
}
That being said, testing with a foreach statement can be mischievous, because even if you have enabled lazy loading, the second you query for "employee.FirstName", NHibernate will hit the database and return the results. You're better off catching NHibernate's generated SQL or just using the NHibernate Profiler.