Variable URL in data service

Question

I'm new to Flex and trying to create a proof of concept Air App.  I have it connecting to an http service to retrieve data but I want the URL to be configurable.  I created a preferences page which is working, but I can't seem to load the URL preference into a variable for the http service.  Below is my code:
<fx:Script>
        <![CDATA[
            import mx.controls.Alert;
            import mx.events.FlexEvent;
            import services.exadatademo.newUrl;
            //public var testDbUrl:String = "http://localhost/pls/apex/";
            public var testDbUrl:String;
            private function init():void
                var storedDatabaseUrl:ByteArray = EncryptedLocalStore.getItem("DatabaseUrl");
                testDbUrl = storedDatabaseUrl.readUTFBytes(storedDatabaseUrl.length);
                services.exadatademo.newUrl = 'bar';
                trace(testDbUrl);
            protected function getPrefs():void
                var storedDatabaseUrl:ByteArray = EncryptedLocalStore.getItem("DatabaseUrl");
                dbUrlTxt.text = storedDatabaseUrl.readUTFBytes(storedDatabaseUrl.length);
                testDbUrl = dbUrlTxt.text;
                var storedDatabaseUserName:ByteArray = EncryptedLocalStore.getItem("DatabaseUserName");
                dbUsernameTxt.text = storedDatabaseUserName.readUTFBytes(storedDatabaseUserName.length);
                var storedDatabasePassword:ByteArray = EncryptedLocalStore.getItem("DatabasePassword");
                dbPasswdTxt.text = storedDatabasePassword.readUTFBytes(storedDatabasePassword.length);
            private function savePrefs():void
                var bytes:ByteArray = new ByteArray();
                //write string text as UTF8 bytes
                bytes.writeUTFBytes(dbUrlTxt.text);
                EncryptedLocalStore.setItem("DatabaseUrl", bytes);
                bytes = new ByteArray();
                bytes.writeUTFBytes(dbUsernameTxt.text);
                EncryptedLocalStore.setItem("DatabaseUserName", bytes);
                bytes = new ByteArray();
                bytes.writeUTFBytes(dbPasswdTxt.text);
                EncryptedLocalStore.setItem("DatabasePassword", bytes);
            protected function button1_clickHandler(event:MouseEvent):void
                trace('foo');
                savePrefs();
                currentState = "Main";
            protected function linkbutton1_clickHandler(event:MouseEvent):void
                currentState = "Preferences";
                getPrefs();
            protected function InterconnectTraffic_creationCompleteHandler(event:FlexEvent):void
                //GetEmployeesResult.token = exadataDemo.GetEmployees();
            protected function button2_clickHandler(event:MouseEvent):void
                // TODO Auto-generated method stub
                GetEmployeesResult.token = exadataDemo.GetEmployees();
        ]]>
    </fx:Script>
package services.exadatademo
    import mx.core.FlexGlobals;
    public var newUrl:String = null;
public class ExadataDemo extends _Super_ExadataDemo
    public function ExadataDemo():void
        super();
        trace(newUrl+'hello');
        trace(FlexGlobals.topLevelApplication['testDbUrl']);
        _serviceControl.baseURL = FlexGlobals.topLevelApplication['testDbUrl'];
Thanks,
Tyler

Answer 1

I tried something similar quite some time ago, spend a lot of
time on this task, but never got to a real solution.
As far as I remember there was no way to do it in with shared
libraries that do have different urls.
There might be a workaround to build a php/asp/jsp script
that pipes through the content of a configured shared lib to flash,
pretending it would be the requested shared lib.