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I imported the expense sample app into eclipse and I keep getting this DataNucleus Enhancer problem:
Exception occurred executing command line.
Cannot run program "C:\Program Files\Java\jdk1.6.0_23\bin\javaw.exe" (in directory "C:\data\workspace\app"): CreateProcess error=87, The parameter is incorrect
Any idea why I'm getting this?
Command line is too long (on Windows). Do something to reduce it, like forking the process, or limiting what classes/packages are enhanced
what does forking the process mean?
am i understanding this right?
-move java process to a shorter path like c:\java...?
-make package names shorter?
-limit the classes that get enhanced? how exactly do you do this?
Depends how you are running the DataNucleus enhancer ... which you don't tell us. If you're running it yourself via the likes of Ant or Maven then you can fork the java process (see their docs). If running via the DN eclipse plugin, or other such method then that isn't an option.
In terms of reducing the length of the command, you could use a persistence.xml and specify the classes to be enhanced in there, so the command line would be much shorter.
I have experienced the exact same problem. When trying to run a Spring.roo application after the following commands in the Roo shell:
persistence setup --provider DATANUCLEUS --database HYPERSONIC_IN_MEMORY
entity --class ~.server.domain.Employee --testAutomatically
field string --fieldName userName --sizeMin 3 --sizeMax 30
gwt setup
After finishing execution I ran the project as a "Web Application". If it is of any relevance, I'm running the 64bit STS on a Windows 7 machine.