package geniusweb.clienttest;

import org.python.core.Py;
import org.python.core.PyObject;
import org.python.core.PySystemState;

/**
 * Jython Object Factory using PySystemState
 */
public class JythonObjectFactory {

	private final Class interfaceType;
	private final PyObject klass;

	// Constructor obtains a reference to the importer, module, and the class
	// name
	public JythonObjectFactory(PySystemState state, Class interfaceType, String moduleName, String className) {
		this.interfaceType = interfaceType;
		PyObject importer = state.getBuiltins().__getitem__(Py.newString("__import__"));
		PyObject module = importer.__call__(Py.newString(moduleName));
		klass = module.__getattr__(className);
		System.err.println("module=" + module + ",class=" + klass);
	}

	// This constructor passes through to the other constructor
	public JythonObjectFactory(Class interfaceType, String moduleName, String className) {
		this(new PySystemState(), interfaceType, moduleName, className);
	}

	// All of the followng methods return
	// a coerced Jython object based upon the pieces of information
	// that were passed into the factory. The differences are
	// between them are the number of arguments that can be passed
	// in as arguents to the object.

	public Object createObject() {
		return klass.__call__().__tojava__(interfaceType);
	}

	public Object createObject(Object arg1) {
		return klass.__call__(Py.java2py(arg1)).__tojava__(interfaceType);
	}

	public Object createObject(Object arg1, Object arg2) {
		return klass.__call__(Py.java2py(arg1), Py.java2py(arg2)).__tojava__(interfaceType);
	}

	public Object createObject(Object arg1, Object arg2, Object arg3) {
		return klass.__call__(Py.java2py(arg1), Py.java2py(arg2), Py.java2py(arg3)).__tojava__(interfaceType);
	}

	public Object createObject(Object args[], String keywords[]) {
		PyObject convertedArgs[] = new PyObject[args.length];
		for (int i = 0; i < args.length; i++) {
			convertedArgs[i] = Py.java2py(args[i]);
		}

		return klass.__call__(convertedArgs, keywords).__tojava__(interfaceType);
	}

	public Object createObject(Object... args) {
		return createObject(args, Py.NoKeywords);
	}

}