I was also getting this error after upgrading to 1.2.5, except that in my case the javax.jdo.JDODetachedFieldAccessException was happening when I tried to access a simple 'com.google.appengine.api.datastore.Text' field on a Detached object (Datanucleus must be treating Enumerated fields like a Collection).
I'm using JPA, so for every Text in my entities I had to add the annotation @Basic(fetch = FetchType.EAGER). Just FYI, because I'd never used a fetchtype on a non-collection field. Not sure if this is how it's supposed to work, but it fixes the issue. david On Sep 10, 1:13 am, hansamann <sven.hai...@googlemail.com> wrote: > Hi all, > > since I updated my app to the latest java sdk, I sometimes see these > errors (which results in the homepage of the app being blank or > showing an ugly error message): > > [groovytweets/73.336182399219449559].<stdout>: StackTrace Sanitizing > stacktrace: > org.codehaus.groovy.runtime.InvokerInvocationException: > javax.jdo.JDODetachedFieldAccessException: You have just attempted to > access field "retweets" yet this field was not detached when you > detached the object. Either dont access this field, or detach it when > detaching the object. > at org.codehaus.groovy.reflection.CachedMethod.invoke > (CachedMethod.java:92) > at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:234) > at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1062) > at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java: > 926) > at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:893) > at groovy.lang.Closure.call(Closure.java:279) > at org.codehaus.groovy.grails.web.pages.GroovyPage.invokeTag > (GroovyPage.java:219) > at org.codehaus.groovy.grails.web.pages.GroovyPage$invokeTag > $0.callCurrent(Unknown Source) > at > --~--~---------~--~----~------------~-------~--~----~ 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 google-appengine-java@googlegroups.com To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en -~----------~----~----~----~------~----~------~--~---
