Hello World Enterprise Edition

HelloWorld.java

import java.io.FileDescriptor;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintStream;

public class HelloWorld{
	private static HelloWorld instance;
    public static void main(String[] args){
        instantiateHelloWorldMainClassAndRun();
    }
    
    public static void instantiateHelloWorldMainClassAndRun(){
    	instance = new HelloWorld();
    	
    }
    
    public HelloWorld(){
    	HelloWorldFactory factory = HelloWorldFactory.getInstance();
    	IHelloWorld helloWorld = factory.createHelloWorld();
    	IHelloWorldString helloWorldString = helloWorld.getHelloWorld();
    	IPrintStrategy printStrategy = helloWorld.getPrintStrategy();
    	IStatusCode code = helloWorld.print(printStrategy, helloWorldString);
    	if(code.getStatusCode() != 0){
    		throw new RuntimeException("Failed to print: " + code.getStatusCode());
    	}
    }
}

class StringFactory{
	private static StringFactory instance = new StringFactory();
	public static StringFactory getInstance(){
		return instance;
	}
	public HelloWorldString createHelloWorldString(String str){
		HelloWorldString s = new HelloWorldString();
		s.s = str;
		return s;
	}
}

class PrintStrategyFactory{
	private static PrintStrategyFactory instance = new PrintStrategyFactory();
	public static PrintStrategyFactory getInstance(){
		return instance;
	}
	public IPrintStrategy createIPrintStrategy(){
		IPrintStrategy printStrategy = new PrintStrategyImplementation();
		IStatusCode code = printStrategy.setupPrinting();
		if(code.getStatusCode() != 0){
			throw new RuntimeException("Failed to create IPrintStrategy: " + code.getStatusCode());
		}
		return printStrategy;
	}
}

class PrintStrategyImplementation implements IPrintStrategy{
	private OutputStream print;
	public IStatusCode setupPrinting() {
		try{
			FileDescriptor descriptor = FileDescriptor.out;
			print = new FileOutputStream(descriptor);
			return new StatusCodeImplementation(0);
		}
		catch(Exception e){
			return new StatusCodeImplementation(-1);
		}
	}
	public IStatusCode print(IHelloWorldString string) {
		try{
			print.write(string.getHelloWorldString().getHelloWorldString().concat("\n").getBytes("UTF-8"));
			return new StatusCodeImplementation(0);
		}
		catch(Exception e){
			return new StatusCodeImplementation(-1);
		}
	}
	
}

class StatusCodeImplementation implements IStatusCode{
	private int code;
	public StatusCodeImplementation(int code){
		this.code = code;
	}
	public int getStatusCode() {
		return code;
	}
}

class HelloWorldString{
	String s;
	public String getHelloWorldString(){
		return s;
	}
}

class HelloWorldStringImplementation implements IHelloWorldString{
	public HelloWorldString getHelloWorldString(){
		StringFactory factory = StringFactory.getInstance();
		HelloWorldString s = factory.createHelloWorldString("Hello, World!");
		return s;
	}
}

class HelloWorldFactory{
	private static HelloWorldFactory instance = new HelloWorldFactory();
	public static HelloWorldFactory getInstance(){
		return instance;
	}
	public IHelloWorld createHelloWorld(){
		IHelloWorld helloWorld = new HelloWorldImplementation();
		return helloWorld;
	}
}

class HelloWorldImplementation implements IHelloWorld{
	public IHelloWorldString getHelloWorld() {
		IHelloWorldString string = new HelloWorldStringImplementation();
		return string;
	}
	public IPrintStrategy getPrintStrategy() {
		PrintStrategyFactory factory = PrintStrategyFactory.getInstance();
		return factory.createIPrintStrategy();
	}
	public IStatusCode print(IPrintStrategy strategy, IHelloWorldString toPrint) {
		IStatusCode code = strategy.print(toPrint);
		return code;
	}
}

interface IHelloWorldString{
	public HelloWorldString getHelloWorldString();
}
interface IHelloWorld{
    public IHelloWorldString getHelloWorld();
    public IPrintStrategy getPrintStrategy();
    public IStatusCode print(IPrintStrategy strategy, IHelloWorldString toPrint);
}
interface IStatusCode{
	public int getStatusCode();
}
interface IPrintStrategy{
	public IStatusCode setupPrinting();
	public IStatusCode print(IHelloWorldString string);
}

lgtm

Now, what if the format of the output is not structured? do we need an LLM and StructuredOutputParser? then make sure to deploy it on the Edge!

Unfortunately this is not event driven. Please refactor. 😉