soapUI java api

hi there,

i started to develop test-runner in java, and I have few questions,

1. where is difference between soapUI Pro java API and free SoapUI java API, i check javadocs but almost everything is same

2. Could you give me some example for datasorce code? I tried to use some methods but still failing. I've create workaround but I want to use just soapUI api

3. time to time if I looking something, some links are old. Could you give me links for javadocs? The new ones

Thanks 

Stanislav