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java.lang.ClassCastException: 	at com.correlat.intranet.projectmanagement.Portfolio.jdoReplaceField(Portfolio.java)	at kodo.runtime.StateManagerImpl.replaceField(StateManagerImpl.java:2771)	at kodo.runtime.StateManagerImpl.storeObjectField(StateManagerImpl.java:2272)	at kodo.runtime.StateManagerImpl.storeObject(StateManagerImpl.java:2252)	at kodo.jdbc.meta.ValueFieldMapping.setAutoIncrementValue(ValueFieldMapping.java:346)	at kodo.jdbc.meta.ClassMapping.setAutoIncrementValue(ClassMapping.java:381)	at kodo.jdbc.runtime.PreparedStatementManager.flush(PreparedStatementManager.java:137)	at kodo.jdbc.runtime.UpdateManagerImpl.flush(UpdateManagerImpl.java:357)	at kodo.jdbc.runtime.UpdateManagerImpl.flush(UpdateManagerImpl.java:153)	at kodo.jdbc.runtime.UpdateManagerImpl.flush(UpdateManagerImpl.java:72)	at kodo.jdbc.runtime.JDBCStoreManager.flush(JDBCStoreManager.java:507)	at kodo.runtime.DelegatingStoreManager.flush(DelegatingStoreManager.java:158)	at kodo.datacache.DataCacheStoreManager.flush(DataCacheStoreManager.java:412)	at kodo.runtime.PersistenceManagerImpl.flushInternal(PersistenceManagerImpl.java:794)	at kodo.runtime.PersistenceManagerImpl.flush(PersistenceManagerImpl.java:550)	at kodo.runtime.PersistenceManagerImpl.flush(PersistenceManagerImpl.java:563)	at com.correlat.intranet.projectmanagement.PortfolioTest.testFlush(PortfolioTest.java:393)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at com.intellij.rt.execution.junit2.IdeaJUnitAgent.doRun(Unknown Source)	at com.intellij.rt.execution.junit.TextTestRunner2.startRunnerWithArgs(UnknownSource)	at com.intellij.rt.execution.junit2.JUnitStarter.prepareStreamsAndStart(UnknownSource)	at com.intellij.rt.execution.junit2.JUnitStarter.main(Unknown Source)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at com.intellij.rt.execution.application.AppMain.main(Unknown Source)