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Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up NHibernate.MappingException: No persister for: XYZ up vote 114 nhibernate.mappingexception no persister for down vote favorite 12 Now, before you say it: I did Google and my hbm.xml file is an Embedded Resource. Here is the code I am calling: ISession session = GetCurrentSession(); var returnObject = session.Get(Id); Here is my mapping file for the class: Has anyone run to this issue before? Here is the full error message: MappingException: No persister for: HQData.Objects.SubCategory]NHibernate.Impl.SessionFactoryImpl.GetEntityPersister(String entityName, Boolean throwIfNotFound) in c:\CSharp\NH2.0.0\nhibernate\src\NHibernate\Impl\SessionFactoryImpl.cs:766 NHibernate.Impl.SessionFactoryImpl.GetEntityPersister(String entityName) in c:\CSharp\NH2.0.0\nhibernate\src\NHibernate\Impl\SessionFactoryImpl.cs:752 NHibernate.Event.Default.DefaultLoadEventListener.OnLoad(LoadEvent event, LoadType loadType) in c:\CSharp\NH2.0.0\nhibernate\src\NHibernate\Event\Default\DefaultLoadEventListener.cs:37 NHibernate.Impl.SessionImpl.FireLoad(LoadEvent event, LoadType loadType) in c:\CSharp\NH2.0.0\nhibernate\src\NHibernate\Impl\SessionImp

here for a quick overview of the site Help Center Detailed answers to no persister for nhibernate any questions you might have Meta Discuss the workings and fluent nhibernate "no persister for" policies of this site About Us Learn more about Stack Overflow the company Business Learn more fluent nhibernate mappingexception no persister for about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community http://stackoverflow.com/questions/57804/nhibernate-mappingexception-no-persister-for-xyz Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up no persister for: Fluent nHibernate Exception up vote 3 down vote favorite i m getting the exception "No persister for: MVCTemplate.Common.Entities.User" . I Google this issue and http://stackoverflow.com/questions/6606800/no-persister-for-fluent-nhibernate-exception apply all the solution i found. but all are useless for me. Does anyone know what i m doing wrong ? my User Class code is public class User { public virtual Guid UserID { get; private set; } public virtual string UserName { get; set; } public virtual string Password { get; set; } public virtual string FullName { get; set; } public virtual string Email { get; set; } public virtual TimeSpan LastLogin { get; set; } public virtual bool IsActive { get; set; } public virtual DateTime CreationDate { get; set; } public virtual IList UserInRoles { get; set; } } User Mapping : public class UserMap : ClassMap { public UserMap() { Table("tblUsers"); Id(user => user.UserID).GeneratedBy.GuidComb(); Map(user => user.UserName).Not.Nullable(); Map(user => user.Password).Not.Nullable(); Map(user => user.FullName).Not.Nullable(); Map(user => user.Email).Not.Nullable(); Map(user => user.LastLogin).Not.Nullable(); Map(user => user.IsActive).Nullable(); Map(user => user.CreationDate).Not.Nullable(); HasMany(user => user.UserInRoles); } } FNH Configuration : return Fluently.Configure() .Datab

here for a quick overview of the site Help Center Detailed answers to any questions you might have http://stackoverflow.com/questions/30788147/nhibernate-mapping-exception-no-persister-for-namespace-classname Meta Discuss the workings and policies of this site About Us https://d4dilip.wordpress.com/2011/02/22/no-persister-for-error-in-nhibernate/ Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just no persister like you, helping each other. Join them; it only takes a minute: Sign up NHibernate.Mapping Exception. No persister for Namespace.className up vote 2 down vote favorite Have looked at 4 stackoverflow posts on the same issue but couldn't find a solution. My main program: using System; using System.IO; using System.Collections.Generic; using System.Collections; using System.Linq; using System.Text; no persister for using System.Threading.Tasks; using NHibernate; using NHibernate.Cfg; using NHibernate.Cfg.MappingSchema; using NHibernate.Dialect; namespace NhibernateORM { public class Layout { public int Id { get; set; } public string Name { get; set; } public double xCoordinate { get; set; } public double yCoordinate { get; set; } } class Program { private static int getDummyTableSize(ISession session) { ITransaction readTx = session.BeginTransaction(); int size = session.CreateSQLQuery(@"select * from mydb.mytable").List().Count; readTx.Rollback(); return size; } static void Main(string[] args) { Configuration config = new Configuration(); config.Configure(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "hibernate.cfg.xml")); ISessionFactory factory = config.BuildSessionFactory(); ISession session = factory.OpenSession(); int countBefore = getDummyTableSize(session); ITransaction tx = session.BeginTransaction(); Layout d = new Layout(); d.Id = 213; d.Name = "hello"; d.xCoordinate = 25.823; d.yCoordinate = 746.2; // POINT OF ERROR session.Save(d); tx.Commit(); if (countBefore + 1 == getDummyTableSize(session)) { Console.WriteLine("woo hoo"); } else { Console.WriteLine("oh no"); } session.Close(); } } } My hibernate.cfg.xml (config file): NHibernate.Connection.DriverConnectionProvider NHibernate.Driver.MySqlDataDriver Server=localhost;Database=mydb;User="root";

small solution.I did all the required steps and run it ..and voilaaa… i have this small cute error (because its a really small textūüôā ) It says "No Persister for :…." I get this error when try to save object or SaveUpdate any object. ¬†After a while I figured out that forgot to make my Mapping class Public. And it resolve the problem. My DataModel Class namespace NHBData.Model { public class Employee { public virtual int EmployeeID { get; set; } public virtual string ¬†EmaployeeName { get; set; } } } Mapping file before : namespace NHBData.Model.Mapping { class EmployeeMapping :ClassMap { EmployeeMapping() {¬†¬† ¬† ¬† ¬† ¬† ¬†Id(x => x.EmployeeID).Unique(); Map(x => x.EmaployeeName); } } } Mapping File after namespace NHBData.Model.Mapping { Public class EmployeeMapping :ClassMap { EmployeeMapping() {¬†¬† ¬† ¬† ¬† ¬† ¬†Id(x => x.EmployeeID).Unique(); Map(x => x.EmaployeeName); } } } You can have a look to another annoying error and its solution "LazyLoadException" in nhibernate here Hope this helps to someone.. Have a nice time .. 48.678383 10.151323 Tell your buddy:TwitterEmailFacebookGoogleLinkedInLike this:Like Loading... Tagged .net, FluentNhibernate, NHibernate, nhibernate 3.0, NHibernate error, Nhibernate queries, No Persister for Published by Dilip Singh A dreamer....who never give up and can go to any extend to achieve them. Note :- "This is a personal weblog. The opinions expressed here represent my own and not those of my employer" View all posts by Dilip Singh Post navigation Get latest files from adirectoryVS2010 Professional vs VS2010Ultimate 2 thoughts on “"No Persister For" error inNhibernate” Pingback: How to: NHibernate.MappingException: No persister for: XYZ | SevenNet Pingback: NHibernate.MappingException: No persister for: XYZ [ANSWERED] - Tech ABC to XYZ Leave a Reply Cancel reply Enter your comment here... Fill in your details below or click an icon to log in: Email (Address never made public) Name Website You are commenting using your WordPress.com account. (LogOut/Change) You are commenting using your Twitter account. (LogOut/Change) You are commenting using your Facebook account. (LogOut/Change) You are commenting using your Google+ account. (LogOut/Change) Cancel Connecting to %s Notify me of new comments via email. Notify

 

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