/// <summary>
/// Delete data (the current instance) using the CSLA Data Portal.
/// </summary>
/// <remarks>
/// This method is called when a Business Object is deferred deleted.
/// It actually removes the data from the database.
/// </remarks>
protected override void DataPortal_DeleteSelf()
{
// Get an NHibernate session factory
ISessionFactory sessionFactory = Cfg.GetSessionFactory(DatabaseKey);
// Open an NHibernate session from the factory
using (ISession session = sessionFactory.OpenSession())
{
// Begin a transaction on the session
using (ITransaction transaction = session.BeginTransaction())
{
try
{
// Delete the current instance (using the open session)...
Delete(session);
// ...then commit the transaction
transaction.Commit();
}
catch
{
transaction.Rollback();
throw;
}
}
}
}
/// <summary>
/// Insert or update using NHibernate.
/// </summary>
private void DoInsertOrUpdate()
{
// Get an NHibernate session factory
ISessionFactory sessionFactory = Cfg.GetSessionFactory(DatabaseKey);
// Open an NHibernate session from the factory
using (ISession session = sessionFactory.OpenSession())
{
// Begin a transaction on the session
using (ITransaction transaction = session.BeginTransaction())
{
try
{
// Save some data...
Save(session);
// ...then commit the transaction
transaction.Commit();
}
catch
{
transaction.Rollback();
throw;
}
}
}
}
/// <summary>
/// Update data using the CSLA Data Portal.
/// </summary>
protected override void DataPortal_Update()
{
// Get an NHibernate session factory
ISessionFactory sessionFactory = Cfg.GetSessionFactory(DatabaseKey);
// Open an NHibernate session from the factory
using (ISession session = sessionFactory.OpenSession())
{
// Begin a transaction on the session
using (ITransaction transaction = session.BeginTransaction())
{
try
{
// Stop raising events while the list is modified
RaiseListChangedEvents = false;
// Save some data...
Save(session);
// ...then commit the transaction
transaction.Commit();
}
catch
{
transaction.Rollback();
throw;
}
finally
{
// Start raising events again
RaiseListChangedEvents = true;
}
}
}
}
/// <summary>
/// Fetch data using the CSLA Data Portal.
/// </summary>
/// <param name="criteria">The Business Object criteria to identify what to fetch.</param>
protected override void DataPortal_Fetch(object criteria)
{
// Get an NHibernate session factory
ISessionFactory sessionFactory = Cfg.GetSessionFactory(DatabaseKey);
// Open an NHibernate session from the factory
using (ISession session = sessionFactory.OpenSession())
{
// Fetch the Business Object
Fetch(criteria, session);
}
}
/// <summary>
/// Fetch data using the CSLA Data Portal.
/// </summary>
/// <param name="criteria">The Business Object criteria to identify what to fetch.</param>
protected override void DataPortal_Fetch(object criteria)
{
// Get an NHibernate session factory
ISessionFactory sessionFactory = Cfg.GetSessionFactory(DatabaseKey);
// Open an NHibernate session from the factory
using (ISession session = sessionFactory.OpenSession())
{
// Create the NHibernate criteria interface needed
ICriteria nhCriteria = session.CreateCriteria(typeof(T));
// Get the derived class to setup the specific criteria for this BO
SetNHibernateCriteria(criteria, nhCriteria);
// Get the list based on the criteria selected
IList nhibernateList = nhCriteria.List();
// Now move the references into the CSLA instance
Add(nhibernateList);
}
}
/// <summary>
/// Delete data using the CSLA Data Portal.
/// </summary>
/// <param name="criteria">The Business Object criteria to identify what to delete.</param>
/// <remarks>
/// This method is called from the Business object factory delete method.
/// It actually removes the data from the database.
/// </remarks>
protected override void DataPortal_Delete(object criteria)
{
// Get an NHibernate session factory
ISessionFactory sessionFactory = Cfg.GetSessionFactory(DatabaseKey);
// Open an NHibernate session from the factory
using (ISession session = sessionFactory.OpenSession())
{
// Begin a transaction on the session
using (ITransaction transaction = session.BeginTransaction())
{
try
{
// First load the right BO into memory (this includes any children)...
Fetch(criteria, session);
// ... then mark it as "old"
// Normally the CSLA DataPortal would do this, but as the Fetch() method
// has been called directly this needs to be done manually
MarkOld();
// ... then mark it as deleted (to set the CSLA flags correctly)...
Delete();
// ...and then delete it (using the open session)
Delete(session);
// ...then commit the transaction
transaction.Commit();
}
catch
{
transaction.Rollback();
throw;
}
}
}
}
