IBatis: “Unable to cast object of type 'Castle.Proxies.IDaoProxy' to type 'SysProt.Dao.ICustomerDao'.”

[Jakub Malý]

Hi, I am trying to set up IBatis.NET. 

I have downloaded the sources fromhttp://mybatisnet.googlecode.com/svn/branches/ibatis-1-maintenance/src.

This is my initialization

DomDaoManagerBuilder builder = new DomDaoManagerBuilder();
builder.Configure("dao.config");
IDaoManager daoManager = DaoManager.GetInstance("SqlMapDao");
customerDao = daoManager[typeof(ICustomerDao)];
ICustomerDao cd = (ICustomerDao) customerDao;

The last line throws InvalidCastException "Unable to cast object of type 'Castle.Proxies.IDaoProxy' to type 'SysProt.Dao.ICustomerDao'."

I am not sure, what I did wrong, my dao.config files contains

Here are the definitions of the classes/interfaces:

public interface ICustomerDao
{
    Customer Load(long id);
}

public class CustomerDao: BaseDao, ICustomerDao
{
    public Customer Load(long id)
    {
        throw new NotImplementedException();
    }
}

public class BaseDao : IDao
{
    protected DaoSession GetContext()
    {
        IDaoManager daoManager = DaoManager.GetInstance(this);
        return (daoManager.LocalDaoSession as DaoSession);
    }
}

I have also asked this question on SO, but maybe this mailing list is a better place. 

http://stackoverflow.com/questions/19466324/ibatis-unable-to-cast-object-of-type-castle-proxies-idaoproxy-to-type-syspr

Thanks, Jakub. 

[César Iglesias]

Hi, I think the problem is the inheritance from IDao. ICustomerDAO should inherits from IDao instead BaseDAO.

Regards,
César

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[Jakub Malý]

Hi César,

that does not solve the issue

this line executes fine:

 

IDao customerDao = daoManager[typeof(ICustomerDao)];

 

customerDao implements IDao.

It is this line which fails:

 

ICustomerDao cd = (ICustomerDao) customerDao;

 

I tried adding ICustomerDao: IDao just to be sure and it behaves the same.

 

Jakub.