JBPM4得到所有已经完成节点的主数据类以及数据记录信息

转自http://pdd7531.iteye.com/blog/1392305

找了好久的得到流程中所有已完成ActivityInstance信息的实现方式，结果没找到相关的思路，就试着自己实现了下，发现有点复杂，一个下午才搞定。。。诶，啥时候才能达到如丝袜般顺滑的写代码。。。 

      为了完成得到流程中所有已经完成的ActivityInstance的信息，主要思路为先寻找所有父流程的所有ActivityInstance的信息，再寻找兄弟节点的ActivityInstance的信息，最后寻找所有子流程的ActivityInstance的信息。 

/**
    * <p>Description: 当前节点外键与已经执行完毕的节点自动关联.</p>
    * <p>Author: PanDuanDuan</p>
    * @param relationColumns 所有外键
    * @param piId 当前流程Id
    * @param processInstanceService 流程实例操作Service
    * @param processEngine 流程引擎
    * @param formReader 流程表单控制
    * <p>Date: 2012-2-3</p>
    */
    public void autoMakeContent(List<Column> relationColumns, String executionId,
            ProcessInstanceService processInstanceService,
            ProcessEngine processEngine, XmlFormReader formReader) {
        Map<String,String> result = new HashMap<String,String>();
        //向上寻找  找到所有父类的节点 信息
        result = getParentTableIdAndDataId(executionId,processInstanceService,processEngine,result);
        //得到流程历史Service
        HistoryService historyService = processEngine.getHistoryService();
        //得到Excution的Service
        ExecutionService executionService = processEngine.getExecutionService();
        //得到已经完成的所有节点
        List<HistoryActivityInstance> historyActivityInstances = historyService.createHistoryActivityInstanceQuery().executionId(executionId).list();
        //得到当前的Execution
        Execution execution = executionService.findExecutionById(executionId);
        //递归寻找父Execution直至主流程
        Execution parentExecution = execution.getParent();
        String tempExecutionId = executionId;
        while(null != parentExecution)
        {
            //找到当前节点的兄弟节点
            Collection<? extends Execution> sons = parentExecution.getExecutions();
            if(sons.size() > 1)
            {
                for(Execution son : sons)
                {
                    String sonExecutionId = son.getId();
                    if(!tempExecutionId.equals(sonExecutionId))
                    {
                        historyActivityInstances.addAll(historyService.createHistoryActivityInstanceQuery().executionId(sonExecutionId).list());
                    }
                }
            }
            historyActivityInstances.addAll(historyService.createHistoryActivityInstanceQuery().executionId(parentExecution.getId()).list());
            tempExecutionId = parentExecution.getId();
            parentExecution = parentExecution.getParent();
        }

        HistoryActivityInstanceImpl haiImpl = null;
        //遍历所有节点  找出tableId  以及  dataId
        for(HistoryActivityInstance historyActivityInstance : historyActivityInstances)
        {
            haiImpl = (HistoryActivityInstanceImpl)historyActivityInstance;
            String type = haiImpl.getType();
            if("task".equals(type))
            {
                String taskName = haiImpl.getActivityName();
                XmlForm xmlForm = formReader.getFormByName(taskName);
                String tableId = xmlForm.getTableid();
                ProcessInstance proIns = (ProcessInstance) executionService.findExecutionById(haiImpl.getExecutionId()).getProcessInstance();
                String dataId = CommonTools.Obj2String(executionService.getVariable(proIns.getId(), tableId));
                if(!result.containsKey(tableId) && !"".equals(dataId))
                {
                    result.put(tableId, dataId);
                }
            }else if("sub-process".equals(type))
            {
                String subName = haiImpl.getActivityName();
                String acExecutionId = haiImpl.getExecutionId();
                ProcessInstance proIns = (ProcessInstance) executionService.findExecutionById(acExecutionId).getProcessInstance();
                String subPiId = processInstanceService.getSubPiId(proIns.getId(), subName);
                //向下寻找  找到所有子流程的节点信息
                result = getSubTableIdAndDataId(subPiId,processInstanceService,processEngine,result);
            }
        }

    }

    /**
    * <p>Description: 得到所有子流程的tableId  以及  dataId.</p>
    * <p>Author: PanDuanDuan</p>
    * @param subPiId
    * @param processInstanceService
    * @param processEngine
    * @param result
    * @return
    * <p>Date: 2012-2-3</p>
    */
    private Map<String, String> getSubTableIdAndDataId(String subPiId,
            ProcessInstanceService processInstanceService,
            ProcessEngine processEngine, Map<String, String> result) {
        try{
            //得到流程历史Service
            HistoryService historyService = processEngine.getHistoryService();
            //得到executionService
            ExecutionService executionService = processEngine.getExecutionService();
            //得到流程定义ID
            String pdId = executionService.findProcessInstanceById(subPiId).getProcessDefinitionId();
            //得到FormReader
            RepositoryService repositoryService = processEngine.getRepositoryService();
            // 得到流程定义
            ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery().processDefinitionId(pdId)
                    .uniqueResult();
            String deploymentId = repositoryService.createProcessDefinitionQuery().processDefinitionId(pdId).list().get(0)
                    .getDeploymentId();
            // 通过图片名获得form.xml文件名
            String imageName = processDefinition.getImageResourceName();
            String fileName = imageName.replace(".png", "_form.xml");
            // 得到文件输入流
            InputStream in = repositoryService.getResourceAsStream(deploymentId, fileName);
            // 解析xml文档
            XmlFormReader formReader = new XmlFormReader(in);
            //得到已经完成的所有节点
            List<HistoryActivityInstance> historyActivityInstances = historyService.createHistoryActivityInstanceQuery().processInstanceId((subPiId)).list();
            HistoryActivityInstanceImpl haiImpl = null;
            //遍历所有节点  找出tableId  以及  dataId
            for(HistoryActivityInstance historyActivityInstance : historyActivityInstances)
            {
                haiImpl = (HistoryActivityInstanceImpl)historyActivityInstance;
                String type = haiImpl.getType();
                if("task".equals(type))
                {
                    String taskName = haiImpl.getActivityName();
                    XmlForm xmlForm = formReader.getFormByName(taskName);
                    String tableId = xmlForm.getTableid();
                    String dataId = CommonTools.Obj2String(executionService.getVariable(haiImpl.getExecutionId(), tableId));
                    if(!result.containsKey(tableId) && !"".equals(dataId))
                    {
                        result.put(tableId, dataId);
                    }
                }else if("sub-process".equals(type))
                {
                    String subName = haiImpl.getActivityName();
                    String acExecutionId = haiImpl.getExecutionId();
                    ProcessInstance proIns = (ProcessInstance) executionService.findExecutionById(acExecutionId).getProcessInstance();
                    String subSubPiId = processInstanceService.getSubPiId(proIns.getId(), subName);
                    //向下寻找  找到所有子流程的节点信息
                    result = getSubTableIdAndDataId(subSubPiId,processInstanceService,processEngine,result);
                }
            }
        }catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }

    /**
    * <p>Description: 得到所有父流程的tableId  以及  dataId.</p>
    * <p>Author: PanDuanDuan</p>
    * @param executionId
    * @param processInstanceService
    * @param processEngine
    * @param result
    * @return
    * <p>Date: 2012-2-3</p>
    */
    public Map<String,String> getParentTableIdAndDataId(String executionId, ProcessInstanceService processInstanceService, ProcessEngine processEngine, Map<String,String> result)
    {
        //得到Excution的Service
        ExecutionService executionService = processEngine.getExecutionService();
        Execution execution = executionService.findExecutionById(executionId);
        //递归寻找父Execution直至主流程
        Execution parentExecution = execution.getParent();
        while(null != parentExecution)
        {
            if(null != parentExecution.getParent())
            {
                parentExecution = parentExecution.getParent();
            }else
                break;
        }
        //主的执行Id  防止分支
        String mainExecutionId = null==parentExecution?executionId:parentExecution.getId();
        //存放所有父流程
        List<ProcessInstance> fatherProcessInstances = new ArrayList<ProcessInstance>();
        ProcessInstance fatherProcessInstance = processInstanceService.getParentProcessInstance(mainExecutionId);
        //循环查找所有父流程
        while(null != fatherProcessInstance)
        {
            fatherProcessInstances.add(fatherProcessInstance);
            fatherProcessInstance = processInstanceService.getParentProcessInstance(fatherProcessInstance.getId());
        }
        //如果存在父流程
        if(fatherProcessInstances.size()>0)
        {
            for(ProcessInstance processInstance : fatherProcessInstances)
            {
                result.putAll(getTableIdAndDataIdByProcessInstance(processInstance,processInstanceService,processEngine));
            }
        }
        return result;
    }

    /**
    * <p>Description: 根据流程实例  得到所有的tableId  以及  dataId.</p>
    * <p>Author: PanDuanDuan</p>
    * @param processInstance
    * @param processInstanceService
    * @param processEngine
    * @return Map<tableId,dataId>
    * <p>Date: 2012-2-3</p>
    */
    public Map<String,String> getTableIdAndDataIdByProcessInstance(ProcessInstance processInstance, ProcessInstanceService processInstanceService, ProcessEngine processEngine)
    {
        Map<String,String> result = new HashMap<String,String>();
        try{
            String pdId = processInstance.getProcessDefinitionId();
            //得到流程历史Service
            HistoryService historyService = processEngine.getHistoryService();
            //得到Excution的Service
            ExecutionService executionService = processEngine.getExecutionService();
            //得到已经完成的所有节点
            List<HistoryActivityInstance> historyActivityInstances = historyService.createHistoryActivityInstanceQuery().processInstanceId(processInstance.getId()).list();
            //得到FormReader
            RepositoryService repositoryService = processEngine.getRepositoryService();
            // 得到流程定义
            ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery().processDefinitionId(pdId)
                    .uniqueResult();
            String deploymentId = repositoryService.createProcessDefinitionQuery().processDefinitionId(pdId).list().get(0)
                    .getDeploymentId();
            // 通过图片名获得form.xml文件名
            String imageName = processDefinition.getImageResourceName();
            String fileName = imageName.replace(".png", "_form.xml");
            // 得到文件输入流
            InputStream in = repositoryService.getResourceAsStream(deploymentId, fileName);
            // 解析xml文档
            XmlFormReader formReader = new XmlFormReader(in);
            //遍历所有节点  找出tableId  以及  dataId
            HistoryActivityInstanceImpl haiImpl = null;
            for(HistoryActivityInstance historyActivityInstance : historyActivityInstances)
            {
                haiImpl = (HistoryActivityInstanceImpl)historyActivityInstance;
                String type = haiImpl.getType();
                //只有是任务的节点  才读取tableId  以及  dataId
                if("task".equals(type))
                {
                    String taskName = haiImpl.getActivityName();
                    XmlForm xmlForm = formReader.getFormByName(taskName);
                    String tableId = xmlForm.getTableid();
                    ProcessInstance proIns = (ProcessInstance) executionService.findExecutionById(haiImpl.getExecutionId()).getProcessInstance();
                    String dataId = CommonTools.Obj2String(executionService.getVariable(proIns.getId(), tableId));
                    if(!result.containsKey(tableId))
                    {
                        result.put(tableId, dataId);
                    }
                }
            }
        }catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }