public static Object parseWithIntrospection(
String elementName, Class objectClass, XmlPullParser parser) throws Exception {
boolean done = false;
Object object = objectClass.newInstance();
while (!done) {
int eventType = parser.next();
if (eventType == XmlPullParser.START_TAG) {
String name = parser.getName();
String stringValue = parser.nextText();
PropertyDescriptor descriptor = new PropertyDescriptor(name, objectClass);
// Load the class type of the property.
Class propertyType = descriptor.getPropertyType();
// Get the value of the property by converting it from a
// String to the correct object type.
Object value = decode(propertyType, stringValue);
// Set the value of the bean.
descriptor.getWriteMethod().invoke(object, value);
} else if (eventType == XmlPullParser.END_TAG) {
if (parser.getName().equals(elementName)) {
done = true;
}
}
}
return object;
}
/**
* Decodes a String into an object of the specified type. If the object type is not supported,
* null will be returned.
*
* @param type the type of the property.
* @param value the encode String value to decode.
* @return the String value decoded into the specified type.
* @throws Exception If decoding failed due to an error.
*/
private static Object decode(Class type, String value) throws Exception {
if (type.getName().equals("java.lang.String")) {
return value;
}
if (type.getName().equals("boolean")) {
return Boolean.valueOf(value);
}
if (type.getName().equals("int")) {
return Integer.valueOf(value);
}
if (type.getName().equals("long")) {
return Long.valueOf(value);
}
if (type.getName().equals("float")) {
return Float.valueOf(value);
}
if (type.getName().equals("double")) {
return Double.valueOf(value);
}
if (type.getName().equals("java.lang.Class")) {
return Class.forName(value);
}
return null;
}
