I was wrong about the solution to my casting issue... it is not resolved... the excess code that I found in my inheritied class did resolve another issue (not mentioned here, but I thought it was related). so.. this still does not work:
//lookup the user entity
EntityCollection userCollection = new EntityCollection( new UsersEntityFactory());
RelationPredicateBucket userPredicateBucket = new RelationPredicateBucket();
IPredicateExpression A = new PredicateExpression();
A.Add(PredicateFactory.CompareValue(UsersFieldIndex.Name, ComparisonOperator.Equal, UserName));
A.AddWithAnd(PredicateFactory.CompareValue(UsersFieldIndex.Password, ComparisonOperator.Equal, Password));
userPredicateBucket.PredicateExpression.Add(A);
DataAccessAdapter adapter = new DataAccessAdapter();
adapter.FetchEntityCollection(userCollection, userPredicateBucket);
// get the UsersEntity
if (userCollection.Count == 1)
{
//the goal here is to load the data into my ServerUser object,
//which inherits from User,
//which inherits from UsersEntity
//this works.. UsersEntity is the LLBLGen generic class
UsersEntity myUsersEntity = (UsersEntity)userCollection[0];
//it blows here. User is my class that inherits from UsersEntity.
//this throws a runtime error of "Invalid Cast"
User myUser = (User)myUserEntity;
//The next step... ServerUser is my class that inherits from User.
//for now I exception out before getting here
ServerUser myServerUser = (ServerUser)myUser;
//this is a workaround... extract the ID and refetch the data into a ServerUser
//ServerUser myServerUser = new ServerUser(myUsersEntity.UsersID);
return LoginUser(myServerUser, SessionID);
here is my Users Class:
using System;
using System.Runtime.Serialization;
using ExecutempsSW.Data.Base.EntityClasses;
using SD.LLBLGen.Pro.ORMSupportClasses;
namespace DotNetDesigns.Windows.Service.User
{
/// <summary>
/// Summary description for User.
/// </summary>
public class User: UsersEntity
{
public User():base()
{
}
public User(int UserID): base(UserID)
{
}
public User(int UserID, string UserKey, string SessionID):base(UserID)
{
}
public User(IEntityFields2 fields):base(fields)
{
}
public User(SerializationInfo info, StreamingContext context) : base(info, context)
{
}
public virtual bool Save()
{
return false;
}
public virtual bool FetchData()
{
return false;
}
public virtual UserSession Login()
{
return new UserSession(0);
}
public virtual bool LoadDataset(UserDataset dsUser)
{
return false;
}
public UserDataset GetDataset()
{
return new UserDataset();
}
public virtual bool Logout()
{
return true;
}
public virtual bool ResetPassword()
{
return false;
}
public virtual bool ChangePassword(string sCurrentPassword, string sNewPassword, string sSessionID)
{
return false;
}
public override string SecretAnswer
{
get
{
return "";
}
}
public override string Password
{
get
{
return "";
}
}
public override string SecretQuestion
{
get
{
return "";
}
}
}
}
and my ServerUser class:
using System;
using DotNetDesigns.Windows.Service.User;
using ExecutempsSW.Data.Base.DatabaseSpecific;
using ExecutempsSW.Data.Base;
using ExecutempsSW.Data.Base.EntityClasses;
using ExecutempsSW.Data.Base.FactoryClasses;
using SD.LLBLGen.Pro.DQE;
using System.Runtime.Serialization;
using SD.LLBLGen.Pro.ORMSupportClasses;
namespace DotNetDesigns.Windows.Service.User
{
/// <summary>
/// Summary description for ServerUser.
/// </summary>
public class ServerUser: User
{
public ServerUser():base()
{
}
public ServerUser(int UserID):base(UserID)
{
}
public ServerUser(int UserID, string UserKey, string SessionID) :base(UserID, UserKey, SessionID)
{
this.FetchData();
}
public ServerUser(IEntityFields2 fields):base(fields)
{
}
public ServerUser(SerializationInfo info, StreamingContext context) : base(info, context)
{
}
public override bool Save()
{
DataAccessAdapter adapter = new DataAccessAdapter();
return adapter.SaveEntity(this, true);
}
public override bool FetchData()
{
DataAccessAdapter adapter = new DataAccessAdapter(true);
bool results = adapter.FetchEntity(this);
//this is another thing I'm trying to figure out... I'll leave it in a seperate thread...
//adapter.FetchEntity(this.UsersKey);
//adapter.FetchEntity(this.UsersContact);
//this.UsersContact = (ContactEntity)adapter.FetchNewEntity(new ContactEntityFactory(), this.GetRelationInfoUsersContact());
adapter.CloseConnection();
return results;
}
public override UserSession Login()
{
DataAccessAdapter adapter = new DataAccessAdapter();
this.FetchData();
//check to see if a key exists
string myKeyString = this.UsersKey.IsNew.ToString();
if(myKeyString == "")
{
//if no key exists, create one
UsersKeyEntity myKey = new UsersKeyEntity(this.UsersID);
}
//UserSession mySession = new UserSession(SessionID);
//add new UsersSession to key
//Save
//return adapter.SaveEntity(myKey, true);
return new UserSession();
}
public override bool LoadDataset(UserDataset dsUser)
{
return new UserDataset();
}
public override bool Logout()
{
return true;
}
public override bool ResetPassword()
{
return true;
}
public override bool ChangePassword(string sCurrentPassword, string sNewPassword, string sSessionID)
{
return true;
}
}
}
Any idea why I can't cast the UsersEntity to a User? I expect the same issues when I try to cast a User to a ServerUser. Once I get the first cast done I will test the next one...
Thanks,
Darwin
