Transform string into code in Java

Question

I got a strange case. In the given database, I got a record that has a VARCHAR field, so in my entity model I added this field, plus getters and setters. Now is the

Answer 1

Look at the java scripting API

int eval(String code) {
    code = "function f () {" + code + "} f()"; // Or otherwise
    ScriptEngineManager factory = new ScriptEngineManager();
    ScriptEngine engine = factory.getEngineByName("JavaScript");
    engine.put("score", 1.4);
    Number num = (Number) engine.eval(code);
    return num.intValue();
}

Here I assumed, that JavaScript syntax is possible; had to fill in score, you might somewhere intercept all unknown free variables.