Problem after storing data in Storage and trying to read it

Question

Hi all,
I have a problem with reading the data from a Storage file I created. The code folows:
public var storage: Storage;
public var prop: Property;
public var props: Property[];
var initialized: Boolean = false;
public function initiliazeDatabase(): Boolean {
storage = Storage {
source: "test.db"
var resource: Resource = storage.resource;
var inputStream: InputStream = resource.openInputStream();
readData(inputStream);
println("Initilatization done!!!");
println("size: {sizeof props}");
return initialized;
function initStorage() {
println("Initializing Storage…");
var out = storage.resource.openOutputStream(true);
var dummyRoot = "<prop></prop>\n";
out.write(dummyRoot.getBytes());
out.close();
initialized = true;
function parseCallback(e: Event) {
if (e.type == PullParser.START_ELEMENT) {
if (e.qname.name == "prop" and e.level == 0) {
prop = Property { };
} else if (e.type == PullParser.END_ELEMENT) {
if (e.qname.name == "prop" and e.level == 0) {
insert prop into props;
} else if (e.type == PullParser.TEXT) {
if (e.qname.name == "name" and e.level == 1) {
prop.name = e.text;
if (e.qname.name == "value" and e.level == 1) {
prop.value = e.text;
public function addProp(name: String, value: String): Void {
prop = Property {
name: name;
value: value;
insert prop into props;
public function storeData(): Void {
var out = storage.resource.openOutputStream(false);
for (prop in props) {
out.write(prop.toXml().getBytes());
out.close();
public function readData(inn: InputStream): Void {
var parser = PullParser {
input: inn;
onEvent: parseCallback;
try {
parser.parse();
initialized = true;
} catch (npe: NullPointerException) {
initStorage();
Now, for the first time, the app works as it should, the Storage is initialized (if it does not exist) and the required fields are stored in it when I need to.
However, the next time I start the application I get the following error:
Exception in thread "AWT-EventQueue-0" java.lang.ExceptionInInitializerError
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.javafx.runtime.provider.GUIRuntimeProvider$1.run(GUIRuntimeProvider.java:65)
at com.sun.javafx.tk.swing.SwingToolkit$StartupRoutine.run(SwingToolkit.fx:582)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: com.sun.javafx.data.pull.impl.StreamException: [20,1] Syntax Error in prop
at com.sun.javafx.data.pull.ukit.xml.ParserStAX.panic(ParserStAX.java:1516)
at com.sun.javafx.data.pull.ukit.xml.ParserStAX.next(ParserStAX.java:400)
at javafx.data.pull.PullParser.next(PullParser.fx:319)
at javafx.data.pull.PullParser.parse(PullParser.fx:258)
at com.gpsbuddy.utils.DatabaseUtils.readData(DatabaseUtils.fx:86)
at com.gpsbuddy.utils.DatabaseUtils.readData(DatabaseUtils.fx:86)
at com.gpsbuddy.utils.DatabaseUtils.initiliazeDatabase(DatabaseUtils.fx:30)
at com.gpsbuddy.utils.DatabaseUtils.initiliazeDatabase(DatabaseUtils.fx:30)
at com.gpsbuddy.main.Main.<clinit>(Main.fx:21)
at com.gpsbuddy.main.Main.<clinit>(Main.fx:21)
I did check the muffin file and it has no errors in it...
Thanks in andvance...

Answer 1

Well, as it appears, the second part of the exception was right.. :P... I do have problem with the XML file.. for some reason I cannot have two <prop> tags in one document?
For example, if I have <prop></prop>, the program start ok... but when a new prop is added, for example, <prop></prop><prop></prop>, I get the error from the previous post?
Does anybody know anything about this? Could this be an error in the parser, or I am missing something?
Edited by: jonycus1 on Feb 25, 2010 3:10 PM