Chorn Sokun's Weblog

Build monodevelop on ubuntu 11.10

Chorn Sokun — Fri, 11 Nov 2011 16:12:59 +0000

Again? yes but this time I don’t have to built mono runtine Ubuntu 11.10 packed with mono 2.10.5 which good enough since what I am after is dynamic.
However monodevelop I got from Ubuntu Software Center (USC) is 2.6 and the official release is 2.8.x so I take my on my gut to try and built me an IDE ;)

This time it much easier what I have to do is get latest copy of the source code from github.com

> git clone git://github.com/mono/monodevelop.git

Then install build dependent by issuing this command

> sudo apt-get build-dep monodevelop

I don’t know why mono-gmcs was not install as part of the previous command (if you know why please comment) for now I have to install another package

> sudo apt-get install mono-gmcs

and then I’m ready to

> ./configure
> sudo make && make run

> monodevelop

BOOM !

MonoDevelop 2.8.2
Installation UUID: b220bfc2-57c6-4b94-840e-ff6c6477632d
Runtime:
	Mono 2.10.5 (Debian 2.10.5-1) (64-bit)
	GTK 2.24.6
	GTK# (2.12.0.0)
Build information:
	Git revision: e047f99f6df7b5c801102c03f903d4dd722b2989-dirty
	Build date: 2011-11-11 15:03:47+0000

Thanks to mono packaging team, you guy rock!

LINQ 101 .NET Reflection

Chorn Sokun — Sat, 07 May 2011 05:39:19 +0000

In this post I am going over three points listed bellow:

What is .NET Reflection? Cut short it refer to a set of API built-in .NET Framework, which give you a greate power to load and manipulate type within assembly (.dll) one of the most favor use is to support late binding. There a whole lot of explaination available through google! but that all I care for now.

How about LINQ? stand for .NET Language-Integrated Query,

a set of general purpose standard query operators that allow traversal, filter, and projection operations to be expressed in a direct yet declarative way in any .NET-based programming language. The standard query operators allow queries to be applied to any IEnumerable-based information source.

What it mean to me?
Assume that I had ITrap interface and a bunch of Trap implementation as show in the code bellow:

interface ITrap{
  void Setup();
  int OrderNr { get; };
}

class LevelOneTrap: ITrap{
  public void Setup(){
    Console.WriteLine("LevelOne Setup First");
  }
  public int OrderNr {
    get { return 1; }
  }
}

class LevelTwoTrap: ITrap{
  public void Setup(){
    Console.WriteLine("LevelTwo Setup Next");
  }
  public int OrderNr {
    get { return 2; }
  }
}

Now I want to Setup all trap by respecting it OrderNr which mean LevelOneTrap.Setup() must execute before LevelTwoTrap.Setup() so far so good? Let see how many lines of code needed:

var trapInterface = typeof(ITrap);

var trapImplementations = ( from t in trapInterface.Assembly.GetTypes()
                      where t.IsClass && t.GetInterfaces().Any(x => x == trapInterface)
                      select (ITrap)Activator.CreateInstance(t)
                  ).OrderBy(k=>k.OrderNr);

// time to play ;)
foreach( var trap in trapImplementations ) {
  trap.Setup();
}

//   LevelOne Setup First
//   LevelTwo Setup Next

Cool isn’t it? Life is short so our code!

Tagged: .NET Reflection, C#, LINQ

.NET developer survive on linux

Chorn Sokun — Sat, 22 Jan 2011 15:36:16 +0000

I’ve been joking with my friends “the open source fan boyz” that I am a Microsoft slave for the fact that I am a dedicated .NET developer. But for all the joke I found some competitive disadvantage for me moving forward. If customer is looking for a low cost solution .NET is not the way to go. Base on what I do for a living, I build desktop and web application in .NET. But I tend to focus more on Web Application which dragged me to ASP.NET MVC.

Let taking ASP.NET MVC to build solution for me it yield a great ROI for me

I got to learn more about .NET library
it still .NET so I can use all the skill I got
got great IDE support => productivity is high so and so …

for clients :/ intranet deploy

invest on the server hardware (normal)
software license just take Microsoft Windows Server + SQL Server hmm

and for Internet deploy ASP.NET hosting generally more expensive than LAMP stack. If I am about to help client cutting down expenditure cost I got to get rid of the underline infrastructure need to run the application. Possible with Mono but I am keep hearing incompatible issues on ASP.NET + Mono.

Anyway let me (us) forget all about ASP.NET glorious day. Recently, I start caught up with a movement in two different communities. Both of them trying to escape from ASP.NET sandbox and they both gave birth to two unrelated open source projects manos and Nancy that the cool part.

These two project promised to free its user from underline infrastructure (no more IIS is required!) and it work x-platform.

Up to this point I can only make manos serve page, I am keep watching and follow-up with Nancy development. I hope to be able to compare advantage and disadvantage between the two projects in the future.

“Nancy start with a full range of view template to choice from, and I do not think it hard for manos to do the same thing”.

Which one is the best? is not really important at this point, what important is when these projects are matured we can use it to build low cost solution for my clients while still enjoy writing C# “YES, it pronounced C-Sharp” :D, but how? Here the spec

Web Application power by [manos | Nancy] + a few open source libraries
Mono 2.8.x or higher
Server OS OpenSuse 11.13
Back-end database name a few open source DBMS

Why OpenSuse? it is mono home’s os, and if you want to get hot-fix on time that the way to go. So let me end this blah blah post with a teasing screenshot!

Hello World from manos running on OpenSuse 11.13 inside VirtualBox, client access from Ubuntu 10.10 if you care about the environment :D

There you go it’s how a .NET developer survive on linux nice hacking weekend everyone!

Tagged: manos, mono-2.8.x, Nancy, OpenSuse-11.13

How to changing default Khmer Unicode Font in Ubuntu

Chorn Sokun — Fri, 10 Dec 2010 01:27:56 +0000

In Ubuntu 10.10 release cycle ttf-khmeros version 5.0.3 was included. However the only problem I had with Chrome. Later on I was told that the fix is by trying various font until we find the one that work properly.

So the idea is to change default Khmer Unicode font so let see how we do it:

sudo gedit /etc/fonts/conf.d/65-khmer.conf

you can replace Khmer OS with Khmer_Unicode_Font_Of_Your_Choice or if you do not want to touch the line you can just add another line on top like this:

Khmer_Unicode_Font_Of_Your_Choice
Khmer OS

next step issue the following command to update font package:

sudo dpkg-reconfigure ttf-khmeros

logout and log back in again.

Thanks @rithy for sharing this technique.

.NET Database Application Development (C#)

Chorn Sokun — Sun, 05 Dec 2010 09:36:32 +0000

If you are interested in .NET and want to jump start with Database Application Development in no time here is your chance

Lady & Gentlemen, boy & girl I present you a .NET Database Application Development (C#) fast track with the following content:

C# Programming Introduction
Introduction to NHibernate .NET Object Relational Mapping (ORM)
Advance Data Processing with NHibernate Criteria API
Hand-on practice

At the end of the course your will learn tools & technique to develop database application which could talk various Database Management System (DBMS) from Microsoft Access, Microsoft SQL Server, MySQL you name it.

Now the truth about doing this in no time :D I lie :-P I need minimum 10 hours before I can transform a newbie into a .NET Database Application Development (C#)

Requirement:

Basic Programming Concept
Know basic C# Programming
Be able to read and understand this blog post – otherwise get yourself English tutor

If you, your friend interested or your employer got budget to develop your capacity drop me a line I would love to hear about it ;)

Deploy MonoRail on IIS7

Chorn Sokun — Thu, 04 Nov 2010 09:10:08 +0000

Note to myself

1. On Default Web Site, click Add Application

2. Change Application Pools = Classic .NET AppPool , go to Application Pools and click on Classic .NET AppPool then take Advanced Settings

Calssic .NET Application Pools, Advanced Settings

3. Add the following setting to web.config

We good to go, hope I don’t waste my time again on this thing.

Ubuntu (NHibernate Mono MySQL) Take 2

Chorn Sokun — Tue, 19 Oct 2010 14:43:08 +0000

In my previous post I am talking about the setting mono, Nhibernate and MySQL stack on Ubuntu, it was a fun experience. However I made a mistake since I didn’t intend seriously use mono at the time I just wipe the whole os off my laptop and boom all the sample code and assembly gone too. But guess what this time I did it again with the combination of

Nhibernate 3 (beta build from trunk)
ConfORM (just so I don’t have to worry about .hbm.xml files)
MySQL driver install via Synaptic Package Manager (cuz I’m a bit lazy this time)

Now see what I got:

SchemaExport in Action ;)

And of cause I do make the sample code & assembly accessible at http://www.joljet.net/nhibernate3-confORM-mono.tar.gz .

Tagged: MySql, NHibernate

Relative local file path to Uri

Chorn Sokun — Sat, 11 Sep 2010 03:27:25 +0000

It just another weekend in my life time; let write a few line of code for fun.

// Do you know you can easily conver file with relative path to an Uri object?
// of cause you do :D
var fileInfo = new FileInfo(@"..\Files\TGIS.xls");
var uri = new Uri(fileInfo.Fullname);

Hope you enjoy your weekend :D

Khmer Collation support in SQL Server 2008

Chorn Sokun — Wed, 28 Jul 2010 03:48:04 +0000

SQL Server ’08 using default collation as “SQL_Latin1_General_CP1_CI_AS” which most/all of us knew that

We can store Khmer Unicode (with NVARCHAR, NText etc)
Searching Khmer Unicode ? suck !

There are work around if you really want to search content in Khmer Unicode after you stored it; using SQL Server ’08 default collation. How?

Method #1: Try to break each word using hidden space

Method #2: Encoding incoming Khmer Unicode content and stored it as ASCI

It works but it hurt; there is an althernative SQL Server ’08 introduce a few additional collation algorithm among those “Khmer_100″ is one of them.

Khmer Collation in SQL Server 2008

That awesome all you have to do is changing your column collation from to “Windows Collation -> Khmer_100″ that’s it no code isn’t that cool ?

No it’s not cool, It only works if SQL Server install on Windows Vista or Higher.

Edit: actually we can also use this

Tagged: Khmer Collation, SQL Server 2008

Mocking ASP.NET MVC 2 Context & Session using RhinoMock

Chorn Sokun — Mon, 26 Jul 2010 03:45:38 +0000

Watching video record from #mvcconf about “Making ASP.NET Apps Testable” by Eric B. Sowell. He showing how to test ASP.NET MVC Session make me wonder how difficult it is for RhinoMock so I load sample app and here how I test it. Since

[Test]
public void TestSession()
{
   // Arrange
   // HttpContextBase, HttpSessionStateBase are abstract classes
   // I can ask RhinoMock to generate stubs for those classes
   var httpContext = MockRepository.GenerateStub();
   var session = MockRepository.GenerateStub();

   session["Name"] = "Sokun";
   httpContext.Stub(c => c.Session)
      .Return(session);

   // act
   controller.ControllerContext = new ControllerContext(httpContext, new RouteData(), controller);
   var result = controller.TestSession() as ViewResult;

   // assert
   Assert.IsNotNull(result);
}

and the action:

public ActionResult TestSession()
{
   ViewData["Name"] = Session["Name"];
   return View();
}

So, what you think? it just fine to love ASP.NET MVC 2

Tagged: ASP.NET MVC 2, RhinoMock, TDD