/// <summary>
/// Called by the client-side DataPortal to update an object.
/// </summary>
/// <remarks>
/// This method delegates to
/// <see cref="SimpleDataPortal">SimpleDataPortal</see>
/// but wraps that call within a
/// <see cref="TransactionScope">TransactionScope</see>
/// to provide transactional support via
/// System.Transactions.
/// </remarks>
/// <param name="obj">A reference to the object being updated.</param>
/// <param name="context">Context data from the client.</param>
/// <returns>A reference to the newly updated object.</returns>
public DataPortalResult Update(object obj, DataPortalContext context)
{
DataPortalResult result;
using (TransactionScope tr = new TransactionScope())
{
SimpleDataPortal portal = new SimpleDataPortal();
result = portal.Update(obj, context);
tr.Complete();
}
return result;
}
public DataPortalResult Update(object obj, DataPortalContext context)
{
SimpleDataPortal portal = new SimpleDataPortal();
return portal.Update(obj, context);
}
public DataPortalResult Update(object obj, DataPortalContext context)
{
try
{
SetContext(context);
DataPortalResult result;
MethodInfo method;
string methodName;
if (obj is CommandBase)
methodName = "DataPortal_Execute";
else if (obj is Core.BusinessBase)
{
Core.BusinessBase tmp = (Core.BusinessBase)obj;
if (tmp.IsDeleted)
methodName = "DataPortal_DeleteSelf";
else
if (tmp.IsNew)
methodName = "DataPortal_Insert";
else
methodName = "DataPortal_Update";
}
else
methodName = "DataPortal_Update";
method = MethodCaller.GetMethod(obj.GetType(), methodName);
IDataPortalServer portal;
switch (TransactionalType(method))
{
case TransactionalTypes.EnterpriseServices:
portal = new ServicedDataPortal();
try
{
result = portal.Update(obj, context);
}
finally
{
((ServicedDataPortal)portal).Dispose();
}
break;
case TransactionalTypes.TransactionScope:
portal = new TransactionalDataPortal();
result = portal.Update(obj, context);
break;
default:
portal = new SimpleDataPortal();
result = portal.Update(obj, context);
break;
}
return result;
}
catch (DataPortalException ex)
{
Exception tmp = ex;
throw;
}
catch (Exception ex)
{
throw new DataPortalException(
"DataPortal.Update " + "Failed on server",
ex, new DataPortalResult());
}
finally
{
ClearContext(context);
}
}