The MultiLanguage framework allows for multiple languages to work together and behave as one program.

The framework consists of a Java core, and a module for every language being used. Current supported modules are Python and Java, but it is simple to add more.

Usage

To use another language's class definitions, first the language must register the class. Let us take an example class:

public class Foo {

	@Global
	public Foo() {
	
	}

	@Global
	public String bar(String param) {
		System.out.println(param);
		return "this is a returned string";
	}

	public void foo() {
	
	}
}

To Register this class, simply do:

LanguageClient client = new LanguageClient("localhost", 8000);
client.registerClass(HealthAdvice.class);

The localhost and port are where the Java core are running, and defaults to port 8000. Only methods and constructors marked with @Global can be used.

Similarly in python:

class Foo:
    @Global
	def __init__(a, b):
		pass

	@Global
	def foo(a, b):
		pass

and to register:

client = LanguageClient('localhost', 8000)
client.register_class(Foo)

Once a class has been registered, other languages can instantiate the object and use its methods. Java:

try {
	client.createObject("Foo", "variableName", "construtor arg1", "constructor arg2...");
	client.callMethod("variableName", "bar", true, "method arg1", "method arg2...");
} catch (ClassNotFoundException | InvalidObjectException e) {
	e.printStackTrace();
}

Python:

client.create_object("Foo", "name", "test", 1, 2)
returnVal = client.call_method("dogVar", "bar", True, "test string 1")