Kenny's Playground

Flex + Spring + iBatis Micro Architecture Diagram

2009-05-09T03:15:00.000-07:00

Not handy and complex... but I believe that it's the standard architecture for RIA.

Implementing Scala Iterable Interface

2009-04-26T01:07:00.000-07:00

ArrayStack Overview#

It's simple scala program that implements Scala Iterable interface and test it.

* Princeton.edu ArrayStackOfString example

* See it in my wiki

Source#

ArrayStack

  case class ArrayStack[T](size: Int) extends Iterable[T] {
  // stack
  val stack : Array[T] = new Array[T](size);
  // number of items in stack
  var idx : Int = 0;

  //---------------------------------------- Stack Methods
  def push(item: T) = { stack(idx) = item ; idx += 1; }
  def pop() : T = { idx -= 1; stack(idx); }

  //---------------------------------------- Iterable Interface
  //* check if stack is empty
  override def isEmpty : Boolean = {idx <= 0; }

  //* return Iterator
  def elements : Iterator[T] = new Iterator[T]  {
    var i = idx - 1;
    override def hasNext:Boolean = { i >= 0; }
    override def next : T = { i -= 1; return stack(i+1); }
  }

  //* Apply a function f to all elements of this iterable object.
  override def foreach(f : T => Unit){
    var currentIndex = idx - 1;
    while(currentIndex >= 0){
      f(stack(currentIndex).asInstanceOf[T]);
      currentIndex -= 1;
    }
  }
}

ArrayStackTester

object ArrayStackOfString extends Application {
//--------------------------------------------- Main Method

// create array stack
val astack = new ArrayStack[String](100);
Console.printf("> ArrayStack of Size %d created.\n\n", astack.size);

// test stack
def doStack {
  Console.readLine() match {
    case null =>
    case "" => Console.println("> Bye !!");
    case "-" if astack.isEmpty => Console.println("@@ Stack is Empty "); doStack;
    case "-" => Console.printf("> Poped : %s\n", astack.pop()); doStack;
    
    case item:String => {
      astack.push(item);
      Console.printf("> Pushed : %s \n", item);
      doStack;
    }                
  }
}

doStack;

// printout stack
Console.printf("> Stack dump\n");
for(item <- astack) {
  Console.println(item);
}
}

Result #

> ArrayStack of Size 100 created.

Array
> Pushed : Array
Stack
> Pushed : Stack
Of
> Pushed : Of
String
> Pushed : String
-
> Poped : String
-
> Poped : Of

> Bye !!
> Stack dump
Stack
Array

Create Scala Project Using Eclipse Maven PlugIn

2009-04-09T09:20:00.000-07:00

In this article, I’d like to explain a way to create simple Scala Project using Eclipse Maven Plug-In. If you're already using Eclipse and Eclipse Maven Plug-In, create a new Scala project is very straightforward, too

▶ See it in my wiki

Step 0. Requirements

l Maven 2.0.8+

l Eclipse 3.4.x

l Eclipse Maven PlugIn
(update site[1]: http://m2eclipse.sonatype.org/update/)

l Eclipse Scala PlugIn
(update site[1]: http://www.scala-lang.org/scala-eclipse-plugin)

l Scala Runtime

[#1] Eclipse IDE Software Update : from menu, select "Help → Software Updates ... → Available Software" and copy update site

Step 1. Add Scala Repository to Maven Indexes

At First, add Scala Repository to Repository Index

( from Menu: Window -> ShowView -> Other -> Maven -> Maven Indexes)

Step 2: Create Maven App

Now you can see scala-tools.archetypes in Maven Project Wizard.

(from Menu: New -> Project -> Maven -> Maven Project)

Step 3: Check it and Run it

Which RIA Platform? - RIA Platform MindMap

2009-04-06T02:20:00.001-07:00

In Korea, more and more projects are using RIA platforms instead of legacy X-Internet solutions.

Thesedays, all of my project are based on "iBatis + Spring + Flex" architecture, too.

These Mindmap is just personal opinions. just see it and forget it.

Social Architecture MindMap

2009-04-04T21:04:00.000-07:00

So inspired by the article: The Elements of Social Architecture by Christina Wodtke, March 03 2009
I created a mindmap based on that contents.

Enjoy it!

See this article in my wiki (Korean Language)

My New Blog Open

2009-03-27T07:44:00.000-07:00

Move to here google Blogger.

To do what?

1. Post my original articles in English.

2. Exchange ideas over the world.

3. Google Blooger looks so cool.

Let me test .......................... Long .............................. Long .......................... and Long, more Long Line