Hi, I'm getting the Exception below when trying to mix JDO annotations and XML Meta data. I was originally only using annotations and that worked OK until I switched from Scala 2.7.7 to Scala 2.8.0RC3. For the latter the annotations do not work correct and therefore I had to switch to also using XML meta data.
The package.jdo file has the following content: <?xml version="1.0" encoding="UTF-8" ?> <jdo xmlns="http://java.sun.com/xml/ns/jdo/jdo"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://java.sun.com/xml/ns/jdo/jdo http://java.sun.com/xml/ns/jdo/jdo_2_0.xsd";> <package name="net.vermaas.kivanotify.model"> <class name="TrackerValue"> <field name="name" primary-key="true" persistence- modifier="persistent" value-strategy="identity"/> <field name="value" persistence-modifier="persistent"/> </class> </package> </jdo> The TrackerValue class is: package net.vermaas.kivanotify.model import javax.jdo.annotations.PersistenceCapable; @PersistenceCapable class TrackerValue(nm: String, vl: String) { var name: java.lang.String = nm var value = vl } And when trying to query this table using the following code I get the stack trace below the code: val name = "someName" val query = "select from " + "net.vermaas.kivanotify.model.TrackerValue" + " where name == '" + name + "'" val tvList = persistenceManager.newQuery(query).execute.asInstanceOf[java.util.List[TrackerValue]] if (tvList.size == 0) { // <<< EXCEPTION Thrown on this line... The exception thrown is: org.datanucleus.exceptions.NucleusObjectNotFoundException: No such object (identity="") at org.datanucleus.state.JDOStateManagerImpl.checkInheritance(JDOStateManagerImpl.java: 682) at org.datanucleus.ObjectManagerImpl.findObjectUsingAID(ObjectManagerImpl.java: 2165) at org.datanucleus.store.appengine.query.DatastoreQuery.entityToPojo(DatastoreQuery.java: 535) at org.datanucleus.store.appengine.query.DatastoreQuery.entityToPojo(DatastoreQuery.java: 500) at org.datanucleus.store.appengine.query.DatastoreQuery.access $300(DatastoreQuery.java:108) at org.datanucleus.store.appengine.query.DatastoreQuery $6.apply(DatastoreQuery.java:618) at org.datanucleus.store.appengine.query.DatastoreQuery $6.apply(DatastoreQuery.java:610) at org.datanucleus.store.appengine.query.LazyResult.resolveNext(LazyResult.java: 94) at org.datanucleus.store.appengine.query.LazyResult.resolveAll(LazyResult.java: 116) at org.datanucleus.store.appengine.query.LazyResult.size(LazyResult.java: 110) at org.datanucleus.store.appengine.query.StreamingQueryResult.size(StreamingQueryResult.java: 124) at net.vermaas.kivanotify.TrackerValues.get(TrackerValues.scala:19) at net.vermaas.kivanotify.gae.LPTESTServlet.doGet(LPTESTServlet.scala: 19) at javax.servlet.http.HttpServlet.service(HttpServlet.java:693) at javax.servlet.http.HttpServlet.service(HttpServlet.java:806) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java: 511) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1166) at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java: 51) IMO there are 2 potential causes: - Switch from Annotations to XML Meta data - Upgrade to Scala2.8.0RC3 For both I'm in the dark on why it happens, any suggestions are welcome. Thanks, Gero -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
