Question

I got following error when build maven datanucleus based project. I have placed maven-datanucleus-plugin under plugin and correctly define the path which contains persistent classes. Can anybody to help in this problem?

Exception in thread "Thread-1" You have selected to use ClassEnhancer "ASM" yet
the JAR for that enhancer does not seem to be in the CLASSPATH!
org.datanucleus.enhancer.NucleusEnhanceException: You have selected to use Class
Enhancer "ASM" yet the JAR for that enhancer does not seem to be in the CLASSPAT
H!
        at org.datanucleus.enhancer.DataNucleusEnhancer.init(DataNucleusEnhancer
.java:212)
        at org.datanucleus.enhancer.DataNucleusEnhancer.addClasses(DataNucleusEn
hancer.java:370)
        at org.datanucleus.enhancer.EnhancerProcessor$EnhanceRunnable.run(Enhanc
erProcessor.java:163)
        at java.lang.Thread.run(Thread.java:662)

Thank you.

Answer 1

So you want to use the enhancer and don’t put asm.jar in the CLASSPATH, as per the docs. Can’t be clearer.