Re: Using java packages with WebObjects and Xcode

On Jan 5, 2007, at 8:48 AM, Joshua Dubey wrote:

> Hi,
>
> I am creating a new web objects application using Xcode2.3.  I  
> would like to be able to use a proper package structure.   
> Specifically, I would like my Application class to be in a package,  
> e.g. com.mycompany.mypackage.
>
> I follow these steps:
>
> File->New Project
> Select WebObjects Application
> Use all defaults on other choices
> Open Application.java and add a package directive
> Build and Run
>
> Output as follows
>
> [Session started at 2007-01-05 08:46:58 -0800.]
> Reading MacOSClassPath.txt ...
> <snip>

>   /Library/WebObjects/Extensions/saaj.jar
>   /Library/WebObjects/Extensions/servlet.jar
>   /Library/WebObjects/Extensions/wsdl4j.jar
>   /Library/WebObjects/Extensions/
> Can't load Application class, exiting...
> java.lang.ClassNotFoundException: Application
> 	at java.net.URLClassLoader$1.run(URLClassLoader.java:199)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
> 	at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
> 	at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
> 	at com.webobjects._bootstrap.WOBootstrap.main(WOBootstrap.java:68)
>
> testproj2 has exited with status 1.
>
> Any ideas?
>
> Thanks,
>
> Josh

This is an artifact of how WO sets up the script that actually calls  
java to run your app.

The short answer is to double-click on the project target in your  
Xcode project (the top one), click on the Settings -> "Expert View"  
thing in the left-hand-side list. A list of key-value pairs will then  
appear. Click on "WOAPPLICATION_CLASS_NAME" and change the value to  
com.mycompany.mypackage.Application. You do not need double-quotes  
around this value.

(hint: also, googling "WOApplicationClass" does tell you something.)

The long answer is ... longer.

You can set arbitrary settings like this on the command line by  
executing the script with:

     MyApp.woa/MyApp - 
DWOAPPLICATION_CLASS_NAME=com.mycompany.mypackage.Application

<gripe> Why are some of the settings named such as  
WO_TEMPLATE_MAJOR_VERSION and this is WO without the underscore? No  
one knows. Do not ask.</gripe>

No, a longer answer would go into all the many ways in which trying  
to launch a java application in such a way that it looks like an  
application bundle as found in OpenStep is just too much to go into.

The executable script inside the woa is just a text file, so looking  
at that can be instructive.

- ray