[appengine-java] Re: Bulk update throws exception

[Larry Cable]

I have exactly the same problem, I instantiate a number of @Entity
objects
(all of the same type) persist them, and flush them in the context of
the same
transaction.

Since they are all of the same type, and their are no relationships
(although there is
an @Embedded class/field) I would imagine that they are all modelled
as being in the
same entity group .. but apparently not.

The documentation is basically useless at this point ...

On Aug 15, 1:09 pm, Foreigner <foreigne...@gmail.com> wrote:
> While trying to do a bulk update on my entities using JPA I get the
> exception bellow.
> I understand that you can't do a bulk update on different entity groups in
> the same transaction but I guess I don't quite understand what an entity
> group is and how I go about making all entities part of the same group I
> want.
>
> Thanks for the help.
>
> fbr
>
> Illegal argument
> org.datanucleus.exceptions.NucleusUserException: Illegal argument
>         at 
> org.datanucleus.store.appengine.DatastoreExceptionTranslator.wrapIllegalArg­umentException(DatastoreExceptionTranslator.java:42)
>         at 
> org.datanucleus.store.appengine.RuntimeExceptionWrappingDatastoreService.pu­t(RuntimeExceptionWrappingDatastoreService.java:106)
>         at 
> org.datanucleus.store.appengine.DatastorePersistenceHandler.put(DatastorePe­rsistenceHandler.java:125)
>         at 
> org.datanucleus.store.appengine.DatastorePersistenceHandler.put(DatastorePe­rsistenceHandler.java:94)
>         at 
> org.datanucleus.store.appengine.DatastorePersistenceHandler.updateObject(Da­tastorePersistenceHandler.java:398)
>         at 
> org.datanucleus.state.JDOStateManagerImpl.flush(JDOStateManagerImpl.java:44­58)
>         at 
> org.datanucleus.ObjectManagerImpl.flushInternal(ObjectManagerImpl.java:2807­)
>         at 
> org.datanucleus.ObjectManagerImpl.markDirty(ObjectManagerImpl.java:2617)
>         at 
> org.datanucleus.state.JDOStateManagerImpl.postWriteField(JDOStateManagerImp­l.java:4241)
>         at 
> org.datanucleus.state.JDOStateManagerImpl.setObjectField(JDOStateManagerImp­l.java:2287)
>         at 
> com.yicook.entities.TwitterDailyTip.jdoSetlastSet(TwitterDailyTip.java)
>         at 
> com.yicook.entities.TwitterDailyTip.setLastSet(TwitterDailyTip.java:36)
>         at 
> com.yicook.control.bco.TwitterStatusSetterBCO.resetTDT(TwitterStatusSetterB­CO.java:60)
>         at 
> com.yicook.control.bco.TwitterStatusSetterBCO.execute(TwitterStatusSetterBC­O.java:40)
>         at 
> com.yicook.control.ApplicationController.executeControllers(ApplicationCont­roller.java:61)
>         at 
> com.yicook.control.ApplicationController.dispatch(ApplicationController.jav­a:41)
>         at com.yicook.servlets.FrontController.doPost(FrontController.java:31)
>         at com.yicook.servlets.FrontController.doGet(FrontController.java:25)
>         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:487)
>         at 
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandle­r.java:1093)
>         at 
> com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(Trans­actionCleanupFilter.java:43)
>         at 
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandle­r.java:1084)
>         at 
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
>         at 
> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
>         at 
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
>         at 
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712)
>         at 
> org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
>         at 
> com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEn­gineWebAppContext.java:54)
>         at 
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
>         at 
> com.google.appengine.tools.development.JettyContainerService$ApiProxyHandle­r.handle(JettyContainerService.java:306)
>         at 
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
>         at org.mortbay.jetty.Server.handle(Server.java:313)
>         at 
> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:506)
>         at 
> org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnecti­on.java:830)
>         at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514)
>         at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
>         at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381)
>         at 
> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:396­)
>         at 
> org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:­442)
> Caused by: java.lang.IllegalArgumentException: can't operate on
> multiple entity groups in a single transaction. found both Element {
>   type: "TwitterDailyTip"
>   id: 77}
>
>  and Element {
>   type: "TwitterDailyTip"
>   id: 78
>
>
>
> }- Hide quoted text -
>
> - Show quoted text -
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