I am newbie to Google app engine and Data nucleus. The following error seems like some jar issue but i am not sure which jars of Data nucleus should be in my war/web-inf/classes folder and which jars should be in app engine SDK folder. I am using App engine SDK 1.7.0. i get no problem in data nucleus enhancement.
Caused by: java.lang.NoSuchMethodError: org.datanucleus.plugin.PluginManager.<init>(Lorg/datanucleus/PersistenceConfiguration;Lorg/datanucleus/ClassLoaderResolver;)V
at org.datanucleus.OMFContext.<init>(OMFContext.java:159)
at org.datanucleus.OMFContext.<init>(OMFContext.java:141)
at org.datanucleus.ObjectManagerFactoryImpl.initialiseOMFContext(ObjectManagerFactoryImpl.java:144)
at org.datanucleus.jdo.JDOPersistenceManagerFactory.initialiseProperties(JDOPersistenceManagerFactory.java:316)
at org.datanucleus.jdo.JDOPersistenceManagerFactory.<init>(JDOPersistenceManagerFactory.java:260)
at org.datanucleus.store.appengine.jdo.DatastoreJDOPersistenceManagerFactory.<init>(DatastoreJDOPersistenceManagerFactory.java:71)
<continued in next message>
In the app engine SDK folder there are various other folders and they contain different versions of same data nucleus file.
*EDIT: *
After updating the SDK to 1.7.3 i noticed the following JARS in the appengine-java-sdk-1.7.3\lib\user\orm folder and these are datanucleus jars presennt there.
datanucleus-core-1.1.5
datanucleus-jpa-1.1.5
datanucleus-appengine-1.0.10.final
jdo2-api-2.3-eb
My war/web-inf/lib contains all the above jars and following jars too:
appengine-api-1.0-sdk-1.7.3.jar
My exception has changed and now it is:
2012-12-12 12:49:17.397
org.datanucleus.plugin.NonManagedPluginRegistry resolveConstraints: Bundle "org.datanucleus.api.jdo" requires "org.datanucleus" version "3.1.1" but the resolved bundle has version "3.1.1" which is outside the expected range.
E 2012-12-12 12:49:17.534
org.datanucleus.api.ApiAdapterFactory getApiAdapter: Error : An error occurred trying to instantiate an instance of the adapter "org.datanucleus.api.jdo.JDOAdapter" : NUCLEUS_CONTEXT_LOADER
W 2012-12-12 12:49:18.182
org.datanucleus.OMFContext setApi: There is no available API adapter "JDO". Using existing adapter.
E 2012-12-12 12:49:18.182
org.datanucleus.api.ApiAdapterFactory getApiAdapter: Error : An error occurred trying to instantiate an instance of the adapter "org.datanucleus.api.jdo.JDOAdapter" : Could not initialize class org.datanucleus.api.jdo.JDOAdapter
Appengine JDO/JPA plugin Wiki defines well enough what DataNucleus jars are needed with each version of the plugin