[SLING-1907] The Scala hello-world example does not work

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: Scripting Scala 1.0.0
• Component/s: Samples
• Assignee: Michael Dürig
• Reporter: Sandro Boehme
• Created: 30/Dec/10 20:32
• Updated: 06/Jan/11 14:33
• Resolved: 04/Jan/11 12:52

Description

To get the Scala samples to work I executed the following steps:
1. The 2.8.1 versions of the scala-compiler and scala-library jars are not available anymore with the group-id "org.scala-lang-osgi" but with the group-id "com.weiglewilczek.scala-lang-osgi" they are.
The problem is, that the checksum is not defined and thus the jar is not automatically downloaded.
As an alternative to always downloading manually I added the jars and an install-script to the 'contrib/scripting/scala/config' project

2. Removed the license header from /contrib/scripting/scala/script/src/main/resources/META-INF/services/javax.script.ScriptEngineFactory as it resulted in entries like the following one in the log file:
29.12.2010 00:59:35.166 ERROR [Background Update org.apache.sling.scripting.scala.script (74)] org.apache.sling.scripting.c
ore.impl.ScriptEngineManagerFactory Cannot register ScriptEngineFactory # limitations under the License. java.lang.ClassNotFo
undException: # limitations under the License. not found by org.apache.sling.scripting.scala.script [74]
at org.apache.felix.framework.ModuleImpl.findClassOrResourceByDelegation(ModuleImpl.java:787)
at org.apache.felix.framework.ModuleImpl.access$400(ModuleImpl.java:71)
at org.apache.felix.framework.ModuleImpl$ModuleClassLoader.loadClass(ModuleImpl.java:1768)
at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
at org.apache.felix.framework.ModuleImpl.getClassByDelegation(ModuleImpl.java:645)
at org.apache.felix.framework.Felix.loadBundleClass(Felix.java:1599)
at org.apache.felix.framework.BundleImpl.loadClass(BundleImpl.java:904)
at org.apache.sling.scripting.core.impl.ScriptEngineManagerFactory.registerFactories(ScriptEngineManagerFactory.java:
146)
at org.apache.sling.scripting.core.impl.ScriptEngineManagerFactory.refreshScriptEngineManager(ScriptEngineManagerFact
ory.java:102)
at org.apache.sling.scripting.core.impl.ScriptEngineManagerFactory.unbindScriptEngineFactory(ScriptEngineManagerFacto
ry.java:266)
I consider this as a workaround as the parser should be adapted to ignore lines containing comments.

3. Installed 'samples/path-based-rtp' as it is needed by the hello-world example

4. Installed 'contrib/scripting/scala/config', 'contrib/scripting/scala/script' and 'contrib/scripting/scala/samples/hello-world' using 'mvn -PautoInstallBundle clean install -Dsling.url=http://localhost:8888/system/console' as the default Jetty-Port is 8888 and the sling:install plugin is not configured in every pom

Would'nt it make sense to create a Maven multi module project that builds and installs the projects?