///Execute are the main methods of <see cref="AdoTemplate"/> class.
///All other methods will finally pass through one of
///<see cref="AdoTemplate.Execute{T}(IDataAdapterCallback{T})"/>
///or
///<see cref="AdoTemplate.Execute{T}(IDbCommandCallback{T})"/> methods.
/// Direct use of this method is not recommended.
/// <summary>
///Execute a ADO.NET operation on a command object using a generic interface based callback.
/// </summary>
/// <typeparam name="T">return type</typeparam>
/// <param name="action">the action to be executed</param>
/// <returns></returns>
public T Execute <T>(IDbCommandCallback <T> action)
{
IDbCommand command = null;
try
{
DbProvider.OpenConnection();
command = DbProvider.CreateCommand();
command.Connection = DbProvider.Connection;
command.Transaction = DbProvider.Transaction;
T result = default(T);
result = action.DoInCommand(command);
return(result);
}
catch (DataException)
{
throw;
}
catch (DbException e)
{
throw new DataException($"Failed to execute a command cllback: {e.Message}", e);
}
catch (Exception)
{
throw;
}
finally
{
ConnectionUtils.DisposeCommand(command);
ConnectionUtils.ClosseConnection(DbProvider);
}
}
