Hi,
I'm trying to use history varaibles in jbpm 4.4 and I encounter an NPE :
2010-06-17 15:56:07,742 [INFO ] org.jbpm.pvm.internal.svc.DefaultCommandService 54 - exception while executing command org.jbpm.pvm.internal.cmd.GetHistoryVariablesCmd@194d4313
java.lang.NullPointerException
at org.jbpm.pvm.internal.cmd.GetHistoryVariablesCmd.execute(GetHistoryVariablesCmd.java:60)
at org.jbpm.pvm.internal.cmd.GetHistoryVariablesCmd.execute(GetHistoryVariablesCmd.java:40)
at org.jbpm.pvm.internal.svc.DefaultCommandService.execute(DefaultCommandService.java:42)
at org.jbpm.pvm.internal.tx.SpringCommandCallback.doInTransaction(SpringCommandCallback.java:45)
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:130)
at org.jbpm.pvm.internal.tx.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:53)
at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.executeInNewEnvironment(EnvironmentInterceptor.java:53)
at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.execute(EnvironmentInterceptor.java:40)
at org.jbpm.pvm.internal.svc.RetryInterceptor.execute(RetryInterceptor.java:56)
at org.jbpm.pvm.internal.svc.HistoryServiceImpl.getVariables(HistoryServiceImpl.java:97)
Is there something particula to configure to make it available ?
I'm using the executionService method executionService.createVariables(executionId, myVariables, true); to activate the history on the current process variable, and I can see some sql insert to the table PROCESS_HISTORY_VARIABLE so I think data are available...
Regards