Turning any method from any POJO into an action (POJO Actions)

With Mentawai you can use any java class (POJO) as an action. You can also call any method without any restriction. Check the examples below:

package hello;
 
import org.mentawai.core.Action;
import org.mentawai.core.Input;
import org.mentawai.core.PojoAction;
 
public class HelloPojo {
 	
 	private String value;
 	
 	public void execute() {
 		
 		value = "hello from execute!";
 
         // void methods are assumed to return SUCCESS...
 	}
 	
 	public Object sayHi() {
 		
 		value = "saying hi!";
 		
 		return "success";
 
        // A method may return any object and the toString() will be called to get the result...
        // If null is returned then Action.NULL is assumed as the result...
 	}
 	
 	public String getValueToShow() {
        
        // If using the OutjectionFilter, this property will be placed in the action output...
 		
 		return value;
 	}
 
 	public void addTwoNumbers(int number1, int number2) {
        
        // the action input values are sorted in alphabetical order, so number1 will be
        // the first input value of type int, and number2 will be the sencond input value
        // of type int. For example: http://www.mysite.com/Hello.mtw?b=3&a=2&c=1 will call
        // addTwoNumbers(2, 3).
 		
        value = "Result1: " + String.valueOf(number1 + number2) + " / number1=" + number1 + " / number2=" + number2;
 
        // return "SUCCESS" assumed...
 	}
 
 	public void addTwoNumbers(Numbers numbers) {
        
        // You can use a POJO to organize the parameters of your method.
        // Your request would be like that: http://www.mysite.com/Hello.mtw?y=2&x=4
 		
 		value = "Result2: " + String.valueOf(numbers.x + numbers.y);
 		
 	}
 	
 	public String testAction() {
 
         // You can access the mentawai action inside your
         // POJO action, but that would not make any sense
         // because you will be coupling your pojo action
         // to the framework. In that case it would be better
         // to just extends from BaseAction or implement Action.
 		
 		Action a = PojoAction.getAction();
 		
 		Input input = a.getInput();
 		
 		int x = input.getIntValue("x");
 		
 		int y = input.getIntValue("y");
 		
 		value = "Result3: " + String.valueOf(x + y);
 		
 		return Action.SUCCESS;
 	}
}

In the application manager you just register the POJO action as you would register any other action:

Tthe action input parameters will be sorted in alphabetical order. However, if you want to explicit determine what values will be used as the method parameters, you can setup a MethodParamFilter. For example, let's say you have the following request:

http://www.mysite.com/HelloPojo.mtw?a=23&a=3&b=5&x=9&y=4

If you want to make sure the method addTwoNumbers take the action input values x and y, and not a and b, which is the default because a and b come first in alphabetical order, then all you have to do inside your application manager is: