How to solve waiting for RPC response in GWT? - gwt

Question

I know that the RPC is asynchronous but how Can in other way (other than waiting for response) to solve this problem:
public static String htsl(String sentence)
{
final DataBaseAsync db = GWT.create(DataBase.class);
String cookie = staticContent.getCookie("ll");
String shortcut = cookie.split("/")[1];
final String[] lala = new String[1];
database.getTranslated(sentence, shortcut, new AsyncCallback<String>() {
#Override
public void onSuccess(String result) {
lala[0]=result;
//this result I want to return in static function htsl... ?
}
#Override
public void onFailure(Throwable caught) {
// TODO Auto-generated method stub
}
});
//here I have blank result, because RPC is slower than te return..
And i have always blank result
return lala[0];
}
I know that is not good, but.. If it is no working solution for this, how to wait for response?

Answer 1

Make htsl asynchronous (non-blocking, i.e. with a callack for the response rather than a return value)

Answer 2

Do it like so:
public static String htsl(String sentence, AsyncCallback<String> myCallback) {
final DataBaseAsync db = GWT.create(DataBase.class);
String cookie = staticContent.getCookie("ll");
String shortcut = cookie.split("/")[1];
final String[] lala = new String[1];
database.getTranslated(sentence, shortcut, myCallback);
}
Then you let some other class implement AsyncCallback, pass it as the myCallback argument to the htsl method and Bob's your uncle.