How to use

getByteArrayValue

method

in

org.camunda.bpm.engine.impl.persistence.entity.HistoricVariableInstanceEntity

 @Test
 @OperateOnDeployment("clientDeployment")
 public void testVariableDeserializationOnProcessApplicationRestart() {
  // given
  ProcessInstance pi = runtimeService.startProcessInstanceByKey("testDeserializeVariable");

  // when
  Assert.assertNull(runtimeService.createProcessInstanceQuery().processInstanceId(pi.getId()).singleResult());
  runtimeService.restartProcessInstances(pi.getProcessDefinitionId())
   .startAfterActivity("servicetask1")
   .processInstanceIds(pi.getId())
   .execute();

  // then

  // Since the variable retrieval is done outside the Process Application Context as well,
  // custom object deserialization is disabled and a null check is performed
  List<HistoricVariableInstance> variableInstances = historyService.createHistoricVariableInstanceQuery().disableCustomObjectDeserialization().list();
  for (HistoricVariableInstance variable : variableInstances) {
   if (variable.getProcessInstanceId() != pi.getId() && variable instanceof HistoricVariableInstanceEntity) {
    Assert.assertNotNull(((HistoricVariableInstanceEntity) variable).getByteArrayValue());
   }
  }
 }
}