DNN Community Blog

The Community Blog is a personal opinion of community members and by no means the official standpoint of DNN Corp or DNN Platform. This is a place to express personal thoughts about DNNPlatform, the community and its ecosystem. Do you have useful information that you would like to share with the DNN Community in a featured article or blog? If so, please contact .

The use of the Community Blog is covered by our Community Blog Guidelines - please read before commenting or posting.


Using the new DAL+ Generic Methods

I have been working on a module for my own personal use, and I have been using the standard practice of using a DataProvider/SQLDataProvider classes within my own assembly.  This is a .NET 2 module and I use a hybrid development model - user controls are in the website (like dynamic modules), but code files are in a separate class library.

Yesterday, when I was working on the core I noticed that the Generic DAL+ methods ExecuteReader/ExecuteScalar/ExecuteNonQuery had been extended to add a parameters collection.  The original versions of these methods required dynamic SQL, but with this change they can now be used with stored procedures.

I decided that I would change my module to use these Generic DAL+ methods.  The approach I took was to create my own DataService class.  I copied all the methods I had previously created in SqlDataProvider, to this class and converted them as follows. (I could have done this all in the controller classes, but I wanted to maintain a DataLayer in my module.

1. I added a private static variable that referenced the core DataProvider
             private static DataProvider provider = DataProvider.Instance()

2. I changed the method signature from "public override" to "public static"
             public static IDataReader GetItems(int moduleId)

3. I changed the call inside to call the appropriate DAL+ method
             return provider.ExecuteReader("GetItems", moduleId)

4. I changed the call inside the controller class to call the new static DataService method
             CBO.FillCollection(DataService.GetItems(moduleId))

5. I then deleted the DataProvider/SqlDataProvider classes, rebuilt, and tested the module and everything worked as before.

The whole process took less than 10 minutes for about 12-15 data layer methods, and now my module can support any database that the core supports (as long as it uses stored procedures Oracle/MySQL/Firebird). 

I also analysed the core SqlDataProvider, and I cannot find a single call that couldn't be rewritten using this approach, and that's when the penny dropped about the power of these methods.

 

Comments

Comment Form

Only registered users may post comments.

NewsArchives


Aderson Oliveira (15)
Alec Whittington (11)
Alex Shirley (10)
Andrew Nurse (30)
Andy Tryba (1)
Anthony Glenwright (5)
Antonio Chagoury (28)
Ash Prasad (32)
Ben Schmidt (1)
Benjamin Hermann (25)
Benoit Sarton (9)
Beth Firebaugh (12)
Bill Walker (36)
Bob Kruger (5)
Bogdan Litescu (1)
Brian Dukes (2)
Brice Snow (1)
Bruce Chapman (20)
Bryan Andrews (1)
cathal connolly (55)
Charles Nurse (163)
Chris Hammond (209)
Chris Paterra (55)
Clinton Patterson (41)
Cuong Dang (21)
Daniel Bartholomew (2)
Daniel Mettler (154)
Dave Buckner (2)
David Poindexter (4)
David Rodriguez (3)
Dennis Shiao (1)
Doug Howell (11)
Erik van Ballegoij (30)
Ernst Peter Tamminga (74)
Geoff Barlow (10)
George Alatrash (6)
Gifford Watkins (3)
Gilles Le Pigocher (3)
Ian Robinson (7)
Israel Martinez (17)
Jan Blomquist (2)
Jan Jonas (3)
Jaspreet Bhatia (1)
Jenni Merrifield (6)
Joe Brinkman (274)
John Mitchell (1)
Jon Henning (14)
Jonathan Sheely (4)
Jordan Coopersmith (1)
Joseph Craig (2)
Kan Ma (1)
Keivan Beigi (3)
Ken Grierson (10)
Kevin Schreiner (6)
Leigh Pointer (31)
Lorraine Young (60)
Malik Khan (1)
Matthias Schlomann (15)
Mauricio Márquez (5)
Michael Doxsey (7)
Michael Tobisch (3)
Michael Washington (202)
Miguel Gatmaytan (3)
Mike Horton (19)
Mitchel Sellers (28)
Nathan Rover (3)
Navin V Nagiah (14)
Néstor Sánchez (31)
Nik Kalyani (14)
Peter Donker (54)
Philip Beadle (135)
Philipp Becker (4)
Richard Dumas (22)
Robert J Collins (5)
Roger Selwyn (8)
Ruben Lopez (1)
Ryan Martinez (1)
Salar Golestanian (4)
Sanjay Mehrotra (9)
Scott McCulloch (1)
Scott S (11)
Scott Wilkinson (3)
Scott Willhite (97)
Sebastian Leupold (80)
Shaun Walker (237)
Shawn Mehaffie (17)
Stefan Cullmann (12)
Stefan Kamphuis (12)
Steve Fabian (31)
Timo Breumelhof (24)
Tony Henrich (3)
Torsten Weggen (2)
Vicenç Masanas (27)
Vincent Nguyen (3)
Vitaly Kozadayev (6)
Will Morgenweck (40)
Will Strohl (165)
William Severance (5)

Content Layout

Subscribe to DNN Digest

Subscribe to DNN Digest

DNN Digest is our monthly email newsletter. It highlights news and content from around the DNN ecosystem, such as new modules and themes, messages from leadership, blog posts and notable tweets. Keep your finger on the pulse of the ecosystem by subscribing.  


Copyright 2017 by DNN Corp Terms of Use Privacy
What is Liquid Content?
Find Out
What is Liquid Content?
Find Out
What is Liquid Content?
Find Out