XML parsing in Java via Groovy

Question

I\'m trying to parse an XML using Groovy and the ScriptEngine API of Java. The code below does exactly that but I wanted to know if there are any better ways of doing the sa

Answer 1

In order to make ScritpEngine more performant, we could use Compilable interface. The code below is a mix of novelty from Tim's comments and the discussion here.

public static Map> getBookDetails(String scriptXml) {
    ScriptEngineManager factory = new ScriptEngineManager();
    ScriptEngine engine = factory.getEngineByName("groovy");
    engine.put("xmlFile", scriptXml);
    try {
        if (engine instanceof Compilable) {
            CompiledScript script = ((Compilable) engine).compile( "new XmlSlurper().parse( xmlFile ).book.findAll().collectEntries { [ (it.@id):[ it.name, it.author ] ] }" );         
            return (Map>)(script.eval());
        }
    } catch (ScriptException e) {
        e.printStackTrace();
    } 
    return null;
}

Output:

{1=["Catcher In the Rye", J.D. Salinger], 2=["KiteRunner", Khaled Hosseini]}