Issues while casting execution.getVariable() to Java Object

ash6892 — Fri, 27 Dec 2019 03:26:57 GMT

Hi,

My workflow is something like Service Task createNewAssignment --> TimerCatchingEvent timer1 --> Service Task checkForSubmission.

I'm using Java delegate expression for service tasks.

Below is how I'm starting a process.

AssignmentProcessDTO assignmentProcessDTO = new AssignmentProcessDTO();
assignmentProcessDTO.setAssignmentDTO(assignmentDTO);
assignmentProcessDTO.setDidAnyDoctorOptsIn(true);
assignmentProcessDTO.setNoDoctorSelected(true);
assignmentProcessDTO.setDidDoctorAcknowledge(false);
assignmentProcessDTO.setSecondDoctor(true);
Map<String, Object> variables = new HashMap<>();
variables.put("assignmentProcessDTO", assignmentProcessDTO);
runtimeService.startProcessInstanceByKey("assignmentFlow", variables);

In createNewAssignment, I'm doing below and things work fine.

AssignmentProcessDTO assignmentProcessDTO = execution.getVariable("assignmentProcessDTO", AssignmentProcessDTO.class);

But When i do the same in service task checkForSubmission, which is called after timer, it gives me below error.

2019-12-27 08:48:02.048 ERROR 37424 --- [ecutor-thread-1] o.a.e.impl.interceptor.CommandContext : Error while closing command context

org.activiti.engine.ActivitiException: Cannot cast com.fasterxml.jackson.databind.node.ObjectNode to com.sfl.ahoy.service.dto.AssignmentProcessDTO
at org.activiti.engine.impl.bpmn.behavior.ServiceTaskDelegateExpressionActivityBehavior.execute(ServiceTaskDelegateExpressionActivityBehavior.java:115)
at org.activiti.engine.impl.agenda.ContinueProcessOperation.executeActivityBehavior(ContinueProcessOperation.java:210)
at org.activiti.engine.impl.agenda.ContinueProcessOperation.executeSynchronous(ContinueProcessOperation.java:146)
at org.activiti.engine.impl.agenda.ContinueProcessOperation.continueThroughFlowNode(ContinueProcessOperation.java:101)
at org.activiti.engine.impl.agenda.ContinueProcessOperation.run(ContinueProcessOperation.java:66)

Below is the java class where I'm getting exception.

@Component
public class CheckDoctorOptInService implements JavaDelegate {

    private final Logger logger = LoggerFactory.getLogger(CheckDoctorOptInService.class);

    private final DoctorAssignmentResponseService doctorAssignmentResponseService;

    public CheckDoctorOptInService(DoctorAssignmentResponseService doctorAssignmentResponseService) {
        this.doctorAssignmentResponseService = doctorAssignmentResponseService;
    }

    @Override
    public void execute(DelegateExecution execution) {
        logger.debug("Checking if any doctor has opted in for the assignment or not with execution {}", execution.getVariables());
        AssignmentProcessDTO assignmentProcessDTO = execution.getVariable("assignmentProcessDTO", AssignmentProcessDTO.class);
        Boolean didAnyDoctorOptedIn = doctorAssignmentResponseService.didDoctorRespondForAssignment(assignmentProcessDTO.getAssignmentDTO().getId());
    }
}

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Re: Issues while casting execution.getVariable() to Java Object

mouldi — Tue, 07 Jan 2020 09:01:42 GMT

Hi ash,

Can you provide the AssignmentProcessDTO Class ?
But I think that this should work:

AssignmentProcessDTO assignmentProcessDTO =(AssignmentProcessDTO)execution.getVariable("assignmentProcessDTO");

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Issues while casting execution.getVariable() to Java Object

Re: Issues while casting execution.getVariable() to Java Object