Java StatefulKnowledgeSession类代码示例

import org.drools.runtime.StatefulKnowledgeSession; //导入依赖的package包/类
private void changeTask(long taskId,String username,StatusOperation operation,String faultMessage) {
	EntityManager em=getEntityManager();
	EntityTransaction trans=em.getTransaction();
	try{
		trans.begin();
		Task task=em.find(Task.class, taskId);
		if(StringUtils.isNotEmpty(faultMessage)){
			task.setFaultMessage(faultMessage);
		}
		if(changeTaskStatus(task,operation)){
			em.persist(task);				
		}
		TaskStatus status=task.getStatus();
		if(status.equals(TaskStatus.Completed) || status.equals(TaskStatus.Error) || status.equals(TaskStatus.Exited) || status.equals(TaskStatus.Obsolete) || status.equals(TaskStatus.Failed)){
			StatefulKnowledgeSession session=this.bpmService.getSession(task.getSessionId());
			session.getWorkItemManager().completeWorkItem(task.getWorkItemId(),null);	
			session.dispose();
		}
		trans.commit();
	}catch(Exception ex){
		trans.rollback();
		throw new RuntimeException(ex);
	}
}
 

import org.drools.runtime.StatefulKnowledgeSession; //导入依赖的package包/类
@Override
public void exec(FrameTask ctx) {
	StatefulKnowledgeSession kbsess = kb.newStatefulKnowledgeSession();
	try {
		// this knowledge session will be the session for all Drools rules
		kbsess.insert(ctx.getTriggerEvent());
		kbsess.setGlobal("DAO", ctx.getResource(IGenericPatientObjectDAO.class));
		kbsess.fireAllRules();
		
		// Harvest all the actions out of working memory
		ObjectFilter frameActionFilter = new ObjectFilter() {
			@Override
			public boolean accept(Object object) {
				return object instanceof FrameAction;
			}
		};
		Collection<FactHandle> actions = kbsess.getFactHandles(frameActionFilter);
		for (FactHandle handle : actions) {
			FrameAction action = (FrameAction) kbsess.getObject(handle);
			ctx.addAction(action);
		}
	} finally {
		// clear working memory for next transaction
		kbsess.dispose();
	}
}
 

import org.drools.runtime.StatefulKnowledgeSession; //导入依赖的package包/类
public synchronized Map<String, Object> getProcessInstanceVariables(
		long processInstanceId) {
	StatefulKnowledgeSession ksession = this.bpmService.createSession();
	try {
		ProcessInstance processInstance = ksession.getProcessInstance(processInstanceId);
		if (processInstance != null) {
			Map<String, Object> variables = ((WorkflowProcessInstanceImpl) processInstance)
					.getVariables();
			if (variables == null) {
				return new HashMap<String, Object>();
			}
			// filter out null values
			Map<String, Object> result = new HashMap<String, Object>();
			for (Map.Entry<String, Object> entry : variables.entrySet()) {
				if (entry.getValue() != null) {
					result.put(entry.getKey(), entry.getValue());
				}
			}
			return result;
		} else {
			throw new IllegalArgumentException("Could not find process instance " + processInstanceId);
		}
	} finally {
		ksession.dispose();
	}
}
 

import org.drools.runtime.StatefulKnowledgeSession; //导入依赖的package包/类
public void setProcessInstanceVariables(long processInstanceId,
		Map<String, Object> variables) {
	StatefulKnowledgeSession ksession = this.bpmService.createSession();
	try {
		ProcessInstance processInstance = ksession.getProcessInstance(processInstanceId);
		if (processInstance != null) {
               VariableScopeInstance variableScope = (VariableScopeInstance) 
                   ((org.jbpm.process.instance.ProcessInstance) processInstance)
                       .getContextInstance(VariableScope.VARIABLE_SCOPE);
               if (variableScope == null) {
                   throw new IllegalArgumentException("Could not find variable scope for process instance " + processInstanceId);
               }
               for (Map.Entry<String, Object> entry: variables.entrySet()) {
                   variableScope.setVariable(entry.getKey(), entry.getValue());
               }
           } else {
               throw new IllegalArgumentException("Could not find process instance " + processInstanceId);
           }
	} finally {
		ksession.dispose();
	}
}
 

import org.drools.runtime.StatefulKnowledgeSession; //导入依赖的package包/类
public static void main(String[] args) {
	
	try {
		// load up the knowledge base
		KnowledgeBase kbase = readKnowledgeBase();
		StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
		KnowledgeRuntimeLogger logger = KnowledgeRuntimeLoggerFactory.newFileLogger(ksession, "test");
		// go !
		PI pi = new PI();
		pi.setIterStrategy(PI.IterStrategySetting.ballardMethod.getStrategy());
		ksession.insert(pi);
		ksession.fireAllRules();	
		System.out.println("PI: " + pi.getPi());
		logger.close();
	} catch (Throwable t) {
		t.printStackTrace();
	}			
	
}
 

import org.drools.runtime.StatefulKnowledgeSession; //导入依赖的package包/类
public static void main(String[] args) {
	
	try {
		// load up the knowledge base
		KnowledgeBase kbase = readKnowledgeBase();
		StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
		KnowledgeRuntimeLogger logger = KnowledgeRuntimeLoggerFactory.newFileLogger(ksession, "test");
		// go !
		Employ emp = new Employ();
		emp.setEduInfo("master");
		emp.setResume("tech");
		emp.setAnnualExam("good");
		emp.setAwardPunish("award");
		ksession.insert(emp);
		ksession.startProcess("myrules.salary");
		ksession.fireAllRules();	
		System.out.println("Basic Salary: " + emp.getBasicSalary());
		System.out.println("Duty Salary: " + emp.getDutySalary());
		System.out.println("Bonus      : " + emp.getBonus());
		System.out.println("rate       : " + emp.getPercent());
		System.out.printf("Total Salary: %.0f" , emp.getTotalSalary());
		logger.close();
	} catch (Throwable t) {
		t.printStackTrace();
	}			
	
}
 

import org.drools.runtime.StatefulKnowledgeSession; //导入依赖的package包/类
@SuppressWarnings("unchecked")
@Test
public void testAssertAndExecuteClinicalFacts_Marshaller_Throws_JAXBException()
        throws Throwable {
    // Arrange
    StatefulKnowledgeSession sessionMock = mock(StatefulKnowledgeSession.class);
    doReturn(sessionMock).when(sut).createStatefulKnowledgeSession();
    String factModelStringMock = "factModelStringMock";
    when(
            marshallerMock.unmarshalFromXml(FactModel.class,
                    factModelStringMock)).thenThrow(SimpleMarshallerException.class);

    // Act
    AssertAndExecuteClinicalFactsResponse response = sut
            .assertAndExecuteClinicalFacts(factModelStringMock);

    // Assert
    assertNotNull(response);
    assertNull(response.getRuleExecutionResponseContainer());
}
 

import org.drools.runtime.StatefulKnowledgeSession; //导入依赖的package包/类
public static void printFacts(StatefulKnowledgeSession ksession) {
	if (enabledDebugMode){
		for (FactHandle f: ksession.getFactHandles()){
			System.out.println("  "+ksession.getObject(f));				
		}			
	}		
}
 

import org.drools.runtime.StatefulKnowledgeSession; //导入依赖的package包/类
/**
 * Method to evaluate rules in inner project scopes.
 * @param ksession Drools Knowledge session.
 */
private void evaluateInnerProjectScopes(StatefulKnowledgeSession ksession) {
    LinkedHashMap<String, Integer> importedProjectMap = droolsVisitor.getImportedProjectMap();
    Iterator<String> itr = importedProjectMap.keySet().iterator();
    while (itr.hasNext()) {
        String projectN = itr.next();
        for (int i = 0; i < importedProjectMap.get(projectN); i++) {
            ksession.getAgenda().getAgendaGroup("Group 0_" + i + projectN).setFocus();
            ksession.fireAllRules();
            ksession.getAgenda().getAgendaGroup("Group 2_" + i + projectN).setFocus();
            ksession.fireAllRules();
        }
        ksession.getAgenda().getAgendaGroup("Group 2" + projectN).setFocus();
        ksession.fireAllRules();
        
    }
}
 

import org.drools.runtime.StatefulKnowledgeSession; //导入依赖的package包/类
/**
 * Method to add globals.
 * 
 * @param ksession Drools Knowledge session.
 */
private void addGlobals(StatefulKnowledgeSession ksession) {
    ksession.setGlobal("cList", new ArrayList<Integer>());
    ksession.setGlobal("dList", new ArrayList<String>());
    ksession.setGlobal("vList", new ArrayList<String>());
    ksession.setGlobal("fList", new ArrayList<String>());
    ArrayList<String> definedList = (ArrayList<String>) droolsVisitor.getdList();
    java.util.Set<String> tempSet = new HashSet<String>();
    tempSet.addAll(definedList);
    definedList.removeAll(definedList);
    definedList.addAll(tempSet);
    @SuppressWarnings("unchecked")
    List<String> defL = (ArrayList<String>) ksession.getGlobal("dList");
    for (int i = 0; i < definedList.size(); i++) {
        defL.add(definedList.get(i));
    }
    Map<String, Integer> enumMap = new HashMap<String, Integer>();
    enumMap = droolsVisitor.getEnumMap();
    Iterator<String> itr = enumMap.keySet().iterator();
    while (itr.hasNext()) {
        String k = itr.next();
        ksession.setGlobal(k, enumMap.get(k));
    }
}
 

import org.drools.runtime.StatefulKnowledgeSession; //导入依赖的package包/类
public static final void main(String[] args) {
	try {
		// load up the knowledge base
		KnowledgeBase kbase = readKnowledgeBase();
		StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
		KnowledgeRuntimeLogger logger = KnowledgeRuntimeLoggerFactory.newFileLogger(ksession, "test");
		// go !
		Message message = new Message();
		message.setMessage("Hello World");
		message.setStatus(Message.HELLO);
		ksession.insert(message);
		ksession.fireAllRules();
		logger.close();
	} catch (Throwable t) {
		t.printStackTrace();
	}
}
 

import org.drools.runtime.StatefulKnowledgeSession; //导入依赖的package包/类
@Override
public boolean executeViewRule(ServiceContext context, Long ruleId, BaseObject<?> baseObject) {
	EntityRuleDO rule = entityRuleDAO.getById(ruleId);

	if (rule != null) {
		KnowledgeBase knowlegeBase = getKnowlegeBase(Lists.newArrayList(rule));
		StatefulKnowledgeSession session = knowlegeBase.newStatefulKnowledgeSession();
		for (Permission permission : userService.findAvailablePermissions(context)) {
			session.insert(permission);
		}
		List<ValidationError> errorList = Lists.newArrayList();

		session.setGlobal("errorList", errorList);
		session.insert(baseObject);
		session.fireAllRules();
		session.dispose();
		return errorList.isEmpty();
	}

	return true;
}
 

import org.drools.runtime.StatefulKnowledgeSession; //导入依赖的package包/类
public List<ValidationError> performCrossFieldValidation(ServiceContext context,
		final Map<String, String> extAttributes, Long scopeId, EntityTypeCode entityType) {
	List<ValidationError> errorList = new ArrayList<>();

	if (extAttributes != null) {
		StatefulKnowledgeSession ksession = ruleService.getRuleSessionForScopePath(context, scopeId, entityType);

		if (ksession != null) {
			ksession.setGlobal("errorList", errorList);
			ksession.insert(extAttributes);
			ksession.fireAllRules();
			ksession.dispose();
		}
	}
	return errorList;
}
 

import org.drools.runtime.StatefulKnowledgeSession; //导入依赖的package包/类
/**
* Called from API implemented method after successful retrieval of Alarm.
* 
* @param alarm OpenNMS Model class alarm
* @return OpenNMS Ticket processed by Drools logic.
*/
  protected Ticket createTicketFromAlarm(OnmsAlarm alarm) {
      log().debug("createTicketFromAlarm: Processing ticket.");
      
      // Call superclass method if the knowledge-base was not properly created.
      if( m_knowledgeBase == null ) {
          log().error("KnowledgeBase is NULL, creating basic ticket form alarm.");
          return super.createTicketFromAlarm(alarm);
      }
      
      Ticket ticket = new Ticket();
      StatefulKnowledgeSession session = m_knowledgeBase.newStatefulKnowledgeSession();
      try {
          // Pass the ticket as a global - the logic will fill the appropriate fields
          session.setGlobal("ticket", ticket);
          // Pass the alarm and the node objects
          session.insert(alarm);
          session.insert(alarm.getNode());
          session.fireAllRules();
      } finally {
          session.dispose();
      }
      
      log().debug("createTicketFromAlarm: Succesfully processed ticket.");
      return ticket;
  }
 

import org.drools.runtime.StatefulKnowledgeSession; //导入依赖的package包/类
public static StatefulKnowledgeSession getStatefulKnowledgeSession(String path) {
	KnowledgeBase kbase;
	StatefulKnowledgeSession ksession;
	KnowledgeRuntimeLogger logger;
	try {
		kbase    = readKnowledgeBase(path);
    	ksession = kbase.newStatefulKnowledgeSession();
    	logger   = KnowledgeRuntimeLoggerFactory.newFileLogger(ksession, "test");
    	logger.close();
    	if(ksession != null) {
    		return ksession;
    	} else { return null; }        	
	} catch(Throwable t) {
		System.out.println("X:\tErr in DroolsTools: cannot read knowlegde base\n\t"+t.getMessage());
		//t.printStackTrace();
		return null;
	}
}