[xmlvm-users] Qooxdoo parameters

[John B. <joh...@so...>]

When I try to generate a web application from an Android application I 
came across these problems: (I am working on an Ubuntu 10.4 installation)

1) The manual mentions that QOOXDOO_HOME variable needed to be set up, 
but this did not work and I got another message, saying that I should 
set up XMLVM_QOOXDOO_PATH. I set up this variable to point to the same 
folder and this time around that problem was fixed.

2) Although the manual mentions that --qx-main and --qx-app arguments 
must be specified, it does not specify what these parameters mean or how 
to determine values to be assigned to them. When you specify no 
--qx-main parameter, you get the following message:
QooxdooOutputProcess: --qx-main= must be of format: <ClassName>.(main|Main)
There are no files in an Android project that has a "public static void 
main(String[] args)" method, so I assume I can pick any class name.

3) I tried using MyClass.Main as --qx-main and all seemed wo work fine - 
but no generated code, finally I found it in a subfolder of my current 
folder (/tmp/xmlvm/home/...) in stead of (/home/...).

4) I then copied the files in the "build" folder to the location where I 
actually wanted it. When I open index.html in a web browser, I simply 
get an empty screen.

5) I now tried to redo the xmlvm process and got this error:
ERROR: QooxdooOutputProcess: Output directory exists, but doesn't seem 
to be a valid QX project as the following file could not be found: 
/tmp/xmlvm/home/.../temp_cache/temp_qx_app/generate.py. The funny thing 
is, I can delete the folder /tmp/xmlvm/home/... completely and I still 
get the error. Eventually I found that the check was done against the 
folder I actually wanted as a destination and not the subfolder of the 
current folder.

6) I got null pointer exceptions a few times in at least 2 different 
places. The one I can reproduce is when I use the application class name 
as a --qx-main parameter (e.g. "softco.monitor.Monitor"). Here is the 
stack trace:
Exception in thread "Thread-2" java.lang.NullPointerException
     at net.sf.saxon.Controller.transformDocument(Controller.java:1776)
     at net.sf.saxon.Controller.transform(Controller.java:1559)
     at org.xmlvm.proc.XsltRunner.runXSLT(XsltRunner.java:95)
     at org.xmlvm.proc.XsltRunner.runXSLT(XsltRunner.java:66)
     at 
org.xmlvm.proc.out.JavaScriptOutputProcess.generateJavaScript(JavaScriptOutputProcess.java:141)
     at 
org.xmlvm.proc.out.JavaScriptOutputProcess$JavaScriptTranslationThread.run(JavaScriptOutputProcess.java:61)

If I add .Main at the end of this main ("softco.monitor.Monitor.Main"), 
I do not get this exception.

According to the manual I should have a read ready to deploy web 
application when target is qooxdoo, but unfortunately I just get a blank 
page. Is this statement in the manual in theory (will work if qooxdoo 
target is fully developed), or am I specifying parameters incorrectly? 
(I am hoping for the latter). Can someone please clarify what these two 
parameters in the manual should be?

Regards
John Bester