/**
* We convert script values to the nearest Java value. We unwrap wrapped Java objects so that
* access from Bindings.get() would return "workable" value for Java. But, at the same time, we
* need to make few special cases and hence the following function is used.
*/
private Object jsToJava(Object jsObj) {
if (jsObj instanceof Wrapper) {
Wrapper njb = (Wrapper) jsObj;
/* importClass feature of ImporterTopLevel puts
* NativeJavaClass in global scope. If we unwrap
* it, importClass won't work.
*/
if (njb instanceof NativeJavaClass) {
return njb;
}
/* script may use Java primitive wrapper type objects
* (such as java.lang.Integer, java.lang.Boolean etc)
* explicitly. If we unwrap, then these script objects
* will become script primitive types. For example,
*
* var x = new java.lang.Double(3.0); print(typeof x);
*
* will print 'number'. We don't want that to happen.
*/
Object obj = njb.unwrap();
if (obj instanceof Number
|| obj instanceof String
|| obj instanceof Boolean
|| obj instanceof Character) {
// special type wrapped -- we just leave it as is.
return njb;
} else {
// return unwrapped object for any other object.
return obj;
}
} else { // not-a-Java-wrapper
return jsObj;
}
}
@SuppressWarnings("nls")
private static Date parseDate(String dateString) {
if (dateString == null) return null;
if (!dateString.toLowerCase().startsWith("new date(")) return null;
String value = dateString.substring(9, dateString.lastIndexOf(')'));
if (value.trim().length() == 0) return new Date();
Object[] args = null;
if (value.startsWith("\"") || value.startsWith("'")) {
args = new Object[] {value.substring(1, value.length() - 1)};
} else {
ArrayList<String> al = new ArrayList<String>();
StringTokenizer st = new StringTokenizer(value, ",");
while (st.hasMoreTokens()) {
al.add(st.nextToken());
}
args = al.toArray();
}
Wrapper wrapper = (Wrapper) NativeDate.jsConstructor(args);
return (Date) wrapper.unwrap();
}