[appengine-java] Versioning error using primitive int/Integer

[Chau Huynh]

Hello app engine team,

It seems to me there is an issue trying to persist a @Version int field.
System reports error ClassCassException from Long to Integer...

java.lang.ClassCastException: java.lang.Long cannot be cast to
java.lang.Integer
    at test.TestEntity.jdoReplaceField(TestEntity.java)
    at
org.datanucleus.state.JDOStateManagerImpl.replaceField(JDOStateManagerImpl.java:2687)
    at
org.datanucleus.state.JDOStateManagerImpl.replaceField(JDOStateManagerImpl.java:2566)
    at
org.datanucleus.store.appengine.DatastorePersistenceHandler.handleVersioningBeforeWrite(DatastorePersistenceHandler.java:415)
    at
org.datanucleus.store.appengine.DatastorePersistenceHandler.insertPreProcess(DatastorePersistenceHandler.java:351)
    at
org.datanucleus.store.appengine.DatastorePersistenceHandler.insertObjects(DatastorePersistenceHandler.java:251)
    at
org.datanucleus.store.appengine.DatastorePersistenceHandler.insertObject(DatastorePersistenceHandler.java:240)
    at
org.datanucleus.state.JDOStateManagerImpl.internalMakePersistent(JDOStateManagerImpl.java:3185)
    at
org.datanucleus.state.JDOStateManagerImpl.flush(JDOStateManagerImpl.java:4513)
    at
org.datanucleus.ObjectManagerImpl.flushInternal(ObjectManagerImpl.java:2814)
    at org.datanucleus.ObjectManagerImpl.flush(ObjectManagerImpl.java:2754)
    at
org.datanucleus.ObjectManagerImpl.preCommit(ObjectManagerImpl.java:2893)
    at
org.datanucleus.TransactionImpl.internalPreCommit(TransactionImpl.java:369)
    at org.datanucleus.TransactionImpl.commit(TransactionImpl.java:256)
    at
org.datanucleus.jpa.EntityTransactionImpl.commit(EntityTransactionImpl.java:104)
    at
org.datanucleus.store.appengine.jpa.DatastoreEntityTransactionImpl.commit(DatastoreEntityTransactionImpl.java:55)
    at test.TestServlet.myInit(TestServlet.java:62)
    at test.TestServlet.doGet(TestServlet.java:47)
    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$CachedChain.doFilter(ServletHandler.java:1166)
    at
com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:51)
    at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at
com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
    at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at
com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:122)
    at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
    at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
    at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
    at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
    at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
    at
com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:70)
    at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at
com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:349)
    at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at org.mortbay.jetty.Server.handle(Server.java:326)
    at
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
    at
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
    at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547)
    at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
    at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
    at
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
    at
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)


package test;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Version;

@Entity
public class TestEntity {
    @Id
    @GeneratedValue (strategy = GenerationType.IDENTITY)
    private Long id;

    @Version
    private int version;

    private String data;

    public String getData() {
        return data;
    }

    public void setData(String data) {
        this.data = data;
    }
}


        TestEntity entity = new TestEntity();
        entity.setData("test");
        EntityManager em = EMF.get().createEntityManager();
        EntityTransaction tx = em.getTransaction();
        tx.begin();
        em.persist(entity);
        tx.commit();

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