org.hibernate.TransientObjectException

org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing: hibernate.hr.employee.EmployeeStoreValue at org.hibernate.engine.ForeignKeys.getEntityIdentifierIfNotUnsaved(ForeignKeys.java:216) at org.hibernate.type.EntityType.getIdentifier(EntityType.java:108) at org.hibernate.type.ManyToOneType.nullSafeSet(ManyToOneType.java:71) at org.hibernate.persister.entity.AbstractEntityPersister.dehydrate(AbstractEntityPersister.java:1826) at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2172) at org.hibernate.persister.entity.AbstractEntityPersister.updateOrInsert(AbstractEntityPersister.java:2118) at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2374) at org.hibernate.action.EntityUpdateAction.execute(EntityUpdateAction.java:84) at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:243) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:227) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:141) at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:296) at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27) at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:980) at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:353) at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106) at struts.dao.project.budgetAnalysis.BudgetAnalysisDAO.updateProjectBudget(BudgetDAO.java:574) at struts.project.budgetAnalysis.BudgetPlanningAction.approveRejectBudgetExecute(BudgetStoringgAction.java:480) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:276) at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:196) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:226) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164) at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:415) at javax.servlet.http.HttpServlet.service(HttpServlet.java:709) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) at java.lang.Thread.run(Thread.java:595)

Solution:

This type of Exception do you get generally when you try to store a null object in to the database column which has foreign key relationship with the other table column. Even if you are trying to store other column value which is not a primary key column.