Method overloading check

[abhijats]

Hi Everyone,

Last time my manager asked me to check if system support Method Overloading concept and I created a business rule with two Methods with different parameters, then I called 1st method in another business rule. but the result was not in support of Method Overloading concept. Everytime the last method was getting executing although I had created those methods with different parameters and also tried to call 1st method by its parameter only. So does that mean in SNC environment I can't use Method Overloading thing or I had performed that exercise in a wrong way. Please provide your opinion on the same, If have any sample program that will be better.

[DaleHurtt]

First, I assume you are trying a script like this:

function Foo (a, b) { ... }

function Foo (a, b, c) { ... }

This does not work with JavaScript because "foo" is a property of the context you are working (with a global variable in a browser, it is "window.foo"). So your second definition of "foo" overwrites the first.

What JavaScript does allow, however, is dynamically determining passed parameters at runtime. For example:

function Foo (a, b, c) {
  this.a = a || "";
  this.b = b || "";
  this.c = c || 0;
}

This is fine as long as each method uses a different number of parameters and the first argument is always the same, such as the pseudo equivalent:

void Foo (string a, string b) { ... }

void Foo (string a, string b, integer c) { ... }

If you want to do something more complex, like:

void Foo (string a) { ... }

void Foo (array x) { ... }

For that, where the parameter in any given position can change, you need to dynamically sniff out each variable type. The simplest way to handle a method (function) in JavaScript that can take a variable number of arguments is to pass a JSON object.

function Foo (x) {
  if (x) {
    this.a = x.a || "";
    this.b = x.b || "";
    this.c = x.c || 0;
  }
  else {
    this.a = "";
    this.b = "";
    this.c = 0;
  }
}

var x1 = new Foo ({c:7});
var x2 = new Foo ({b:"Hello"});

Hope that helps.

[abhijats]

Hi Dale,

How do you know that I was trying like:

function Foo (a, b) { ... }

function Foo (a, b, c) { ... }

[DaleHurtt]

I don't know; I was assuming you were, based upon your statement that you were trying the "Method Overloading concept and I created a business rule with two Methods with different parameters". Is that what you were trying to do?

Does the above help?

[abhijats]

I am testing the code, will let you know the result in a short while.