Sling Maven OSGi bundle install issue

["Levine, David" <LE...@consumer.org>]

Hi, all.

I'm using maven to create an OSGi bundle and then maven-sling-plugin to install it ("mvn clean package install").  One odd thing happens, though, every single time the install occurs.  When trying to access my site via HTTP I get a "java.lang.NoClassDefFoundError: org/apache/sling/api/resource/Resource".  I can resolve this by stopping and starting the "Apache Sling Scripting Core implementation" bundle.

Interestingly, this only happens for pages where I'm using Velocity as the scripting language.  I used the Velocity scripting engine in the "contrib" area.  It generally works great except for this particular issue.  Pages that are purely JSP based don't seem to have the problem.  There is a reason for this.  While my OSGi bundle doesn't, of course, contain any Velocity templates or anything like that (it is just Java code that acts as helpers) it does include a BindingsValuesProvider for the use of the Velocity templates stored in /apps.

The exact line which throws the error is in my BindingsValuesProvider.  It is simply:

Resource theResource = (Resource) inBindings.get("resource");

And the odd thing is that it is a NoClassDefFoundError which is cleared up by simply restarting the Sling scripting core bundle.

Caused by: java.lang.NoClassDefFoundError: org/apache/sling/api/resource/Resource
        at org.consumersunion.cq.CUBindingsValuesProvider.addCurrentNodeAndCurrentData(CUBindingsValuesProvider.java:57)
        at org.consumersunion.cq.CUBindingsValuesProvider.addBindings(CUBindingsValuesProvider.java:49)
        at org.apache.sling.scripting.core.impl.DefaultSlingScript.verifySlingBindings(DefaultSlingScript.java:688)
        at org.apache.sling.scripting.core.impl.DefaultSlingScript.call(DefaultSlingScript.java:185)
        at org.apache.sling.scripting.core.impl.DefaultSlingScript.eval(DefaultSlingScript.java:170)
        at org.apache.sling.scripting.core.impl.DefaultSlingScript.service(DefaultSlingScript.java:456)

Has anyone seen something like this before?  At first I thought I simply wasn't waiting long enough after the bundle installation, but this happens no matter how long I wait, but it is cleared up instantly when I restart the Sling scripting core bundle.


Thanks for any help,
--David



**
This e-mail message is intended only for the designated recipient(s) named above. The information contained in this e-mail and any attachments may be confidential or legally privileged. If you are not the intended recipient, you may not review, retain, copy, redistribute or use this e-mail or any attachment for any purpose, or disclose all or any part of its contents.  If you have received this e-mail in error, please immediately notify the sender by reply e-mail and permanently delete this e-mail and any attachments from your computer system.