Your reply shed a lot of insight on the problem, but it's still not
solved.
There's no one (known) action or sequence that triggers errors, but
here is what I have so far.
1. When clicking Edit from the list I sometimes get in the console (no
stack trace):
May 14, 2009 6:38:54 PM
com.google.apphosting.utils.servlet.TransactionCleanupFi
lter handleAbandonedTxns
WARNING: Request completed without committing or rolling back
transaction with i
d 85. Transaction will be rolled back.
2. When clicking save after opening a nature (without modifying it) or
possibly just clicking back to the list, I get in the browser (similar
if not identical in the console):
Exception occured while processing /natures/list
Message: javax.jdo.JDOFatalUserException: Illegal
argument
NestedThrowables:
java.lang.IllegalArgumentException: can't operate on multiple entity
groups in a single transaction. found both Element {
type: "Nature"
id: 42
}
and Element {
type: "Nature"
id: 47
}
org.datanucleus.jdo.NucleusJDOHelper.getJDOExceptionForNucleusException
(NucleusJDOHelper.java:396)
org.datanucleus.state.JDOStateManagerImpl.isLoaded
(JDOStateManagerImpl.java:1879)
lrbcol.model.Nature.jdoGetname(Nature.scala)
lrbcol.model.Nature.name(Nature.scala:18)
lrbcol.model.Nature.toString(Nature.scala:24)
java.lang.String.valueOf(String.java:2827)
scala.StringBuilder.append(StringBuilder.scala:234)
liftgae1.snippet.Natures$$anonfun$list$2.apply(Natures.scala:34)
liftgae1.snippet.Natures$$anonfun$list$2.apply(Natures.scala:34)
[I deleted the rest. That's this line:
NatureLocationType.all foreach {l=>println(l + " for " +
l.nature)}
]
Caught and thrown by:
Message: java.lang.IllegalArgumentException: can't operate on multiple
entity groups in a single transaction. found both Element {
type: "Nature"
id: 42
}
and Element {
type: "Nature"
id: 47
}
com.google.appengine.api.datastore.DatastoreApiHelper.translateError
(DatastoreApiHelper.java:28)
com.google.appengine.api.datastore.DatastoreApiHelper.makeSyncCall
(DatastoreApiHelper.java:55)
com.google.appengine.api.datastore.DatastoreServiceImpl$1.run
(DatastoreServiceImpl.java:109)
com.google.appengine.api.datastore.TransactionRunner.runInTransaction
(TransactionRunner.java:29)
com.google.appengine.api.datastore.DatastoreServiceImpl.get
(DatastoreServiceImpl.java:95)
com.google.appengine.api.datastore.DatastoreServiceImpl.get
(DatastoreServiceImpl.java:68)
com.google.appengine.api.datastore.DatastoreServiceImpl.get
(DatastoreServiceImpl.java:56)
org.datanucleus.store.appengine.RuntimeExceptionWrappingDatastoreService.get
(RuntimeExceptionWrappingDatastoreService.java:62)
org.datanucleus.store.appengine.DatastorePersistenceHandler.get
(DatastorePersistenceHandler.java:78)
org.datanucleus.store.appengine.DatastorePersistenceHandler.get
(DatastorePersistenceHandler.java:88)
org.datanucleus.store.appengine.DatastorePersistenceHandler.fetchObject
(DatastorePersistenceHandler.java:363)
org.datanucleus.state.JDOStateManagerImpl.loadUnloadedFieldsInFetchPlan
(JDOStateManagerImpl.java:1597)
org.datanucleus.state.JDOStateManagerImpl.isLoaded
(JDOStateManagerImpl.java:1862)
lrbcol.model.Nature.jdoGetname(Nature.scala)
lrbcol.model.Nature.name(Nature.scala:18)
lrbcol.model.Nature.toString(Nature.scala:24)
java.lang.String.valueOf(String.java:2827)
scala.StringBuilder.append(StringBuilder.scala:234)
liftgae1.snippet.Natures$$anonfun$list$2.apply(Natures.scala:34)
liftgae1.snippet.Natures$$anonfun$list$2.apply(Natures.scala:34)
[I deleted the rest]
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