LikeMe component throws NPE

[cons0l3]

Cool demo, especially for a beginner like me.

I am running org.apache.sling.launchpad-8.jar unmodified and fresh install on jdk7. I followed the steps to run your sample/tutorial. I work on unmodified sample data and execute a "Like me" operation on the "http://localhost:8080/content/adaptto/2015/day1/rookie-session.html"

The LikeMe component in line 67 calls
ValueMap writeProps = request.getResource().adaptTo(ModifiableValueMap.class);
which leaves the writeProps = NULL. Consequently writeProps.get(...) in line 67 throws NPE. see below.

If I execute request.getResource().adaptTo(ValueMap.class) instead, I get a beautiful ValueMap (non-null!).

I have checked for security issues (like administrative resolver...) but was unlucky.

Please advice.

Exception:
`Internal Server Error (500)

The requested URL /content/adaptto/2015/day1/rookie-session.likeme.html resulted in an error in org.adaptto.rookie.demo.components.LikeMe.

Exception:

java.lang.NullPointerException
at org.adaptto.rookie.demo.components.LikeMe.updateLikeCounter(LikeMe.java:67)
at org.adaptto.rookie.demo.components.LikeMe.doPost(LikeMe.java:48)
at org.apache.sling.api.servlets.SlingAllMethodsServlet.mayService(SlingAllMethodsServlet.java:149)
[...]

[sschlick]

Thank you for your thumbs up!

If you login first at:
http://localhost:8080/.explorer.html#
then the adaption to the ModifiableValueMap should work.

Feel free to contribute a specific handling to our example.

Cheers
Sebastian