package com.fh.controller.activiti;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import org.activiti.bpmn.model.BpmnModel;
import org.activiti.bpmn.model.FlowNode;
import org.activiti.bpmn.model.SequenceFlow;
import org.activiti.engine.HistoryService;
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.RuntimeService;
import org.activiti.engine.TaskService;
import org.activiti.engine.history.HistoricActivityInstance;
import org.activiti.engine.history.HistoricProcessInstance;
import org.activiti.engine.task.Task;
import org.activiti.image.ProcessDiagramGenerator;
import org.springframework.beans.factory.annotation.Autowired;
import com.fh.controller.activiti.util.BpmsActivityTypeEnum;
import com.fh.controller.activiti.util.UtilMisc;
import com.fh.controller.base.BaseController;
import com.fh.util.Const;
import com.fh.util.DelAllFile;
import com.fh.util.FileUpload;
import com.fh.util.PathUtil;
/**
* 类名称：流程业务相关
* 创建人：jocker
* 更新时间：2018年1月31日
* @version
*/
public class AcBusinessController extends BaseController {
@Autowired
private ProcessEngine processEngine; //流程引擎对象
@Autowired
private RepositoryService repositoryService; //管理流程定义 与流程定义和部署对象相关的Service
@Autowired
private RuntimeService runtimeService; //与正在执行的流程实例和执行对象相关的Service(执行管理，包括启动、推进、删除流程实例等操作)
@Autowired
private TaskService taskService; //任务管理 与正在执行的任务管理相关的Service
@Autowired
private HistoryService historyService; //历史管理(执行完的数据的管理)
/**指派任务的代理人
* @param Assignee //代理人
* @param taskId //任务ID
*/
protected void setAssignee(String taskId,String Assignee){
taskService.setAssignee(taskId, Assignee);
}
/**设置流程变量(绑定任务)用Map形式
* @param taskId //任务ID
* @param map
*/
protected void setVariablesByTaskIdAsMap(String taskId,Map<String,Object> map){
taskService.setVariablesLocal(taskId,map);
}
/**获取流程变量
* @param taskId //任务ID
* @param key //键
* @param map
*/
protected Object getVariablesByTaskIdAsMap(String taskId,String key){
return taskService.getVariable(taskId, key);
}
/**设置流程变量(不绑定任务)
* @param taskId //任务ID
* @param map
*/
protected void setVariablesByTaskId(String taskId,String key,String value){
taskService.setVariable(taskId,key,value);
}
/**移除流程变量(从正在运行中)
* @param PROC_INST_ID_ //流程实例ID
* @param map
*/
protected void removeVariablesByPROC_INST_ID_(String PROC_INST_ID_,String key){
runtimeService.removeVariable(PROC_INST_ID_, key);
}
/**查询我的任务
* @param USERNAME
* @return 返回任务列表
*/
protected List<Task> findMyPersonalTask(String USERNAME){
return taskService.createTaskQuery() //创建查询对象
.taskAssignee(USERNAME) //指定办理人
.list(); //读出列表(比如从0到10)
}
/**完成任务
* @param taskId 任务ID
*/
protected void completeMyPersonalTask(String taskId){
taskService.complete(taskId);
}
/**作废流程
* @param processId //流程实例ID
* @param reason //作废原因
* @throws Exception
*/
protected void deleteProcessInstance(String processId,String reason) throws Exception{
runtimeService.deleteProcessInstance(processId, reason);
}
/**删除历史流程
* @param PROC_INST_ID_ //流程实例ID
* @throws Exception
*/
protected void deleteHiProcessInstance(String PROC_INST_ID_) throws Exception{
historyService.deleteHistoricProcessInstance(PROC_INST_ID_);
}
/**生成当前任务节点流程图片PNG
* @param PROC_INST_ID_ //流程实例ID
* @param FILENAME //图片名称
* @throws IOException
*/
protected void createXmlAndPngAtNowTask(String PROC_INST_ID_, String FILENAME) throws IOException{
DelAllFile.delFolder(PathUtil.getClasspath()+"uploadFiles/activitiFile"); //生成先清空之前生成的文件
InputStream in = getResourceDiagramInputStream(PROC_INST_ID_);
FileUpload.copyFile(in,PathUtil.getClasspath()+Const.FILEACTIVITI,FILENAME);//把文件上传到文件目录里面
in.close();
}
/**获取当前任务流程图片的输入流
* @param PROC_INST_ID_ //流程实例ID
* @return
*/
private InputStream getResourceDiagramInputStream(String PROC_INST_ID_){
try {
HistoricProcessInstance hip = historyService.createHistoricProcessInstanceQuery().processInstanceId(PROC_INST_ID_).singleResult(); //获取历史流程实例
List<HistoricActivityInstance> hai = historyService.createHistoricActivityInstanceQuery().processInstanceId(PROC_INST_ID_)
.orderByHistoricActivityInstanceId().asc().list(); //获取流程中已经执行的节点，按照执行先后顺序排序
List<String> executedActivityIdList = new ArrayList<String>(); // 构造已执行的节点ID集合
for (HistoricActivityInstance activityInstance : hai) {
executedActivityIdList.add(activityInstance.getActivityId());
}
BpmnModel bpmnModel = repositoryService.getBpmnModel(hip.getProcessDefinitionId()); // 获取bpmnModel
List<String> flowIds = this.getExecutedFlows(bpmnModel, hai); // 获取流程已发生流转的线ID集合
ProcessDiagramGenerator processDiagramGenerator = processEngine.getProcessEngineConfiguration().getProcessDiagramGenerator();
InputStream imageStream = processDiagramGenerator.generateDiagram(bpmnModel, "png", executedActivityIdList, flowIds, "宋体", "微软雅黑", "黑体", null, 2.0); //使用默认配置获得流程图表生成器，并生成追踪图片字符流
return imageStream;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**获取流程已发生流转的线ID集合
* @param bpmnModel
* @param historicActivityInstances //历史流程实例list
* @return
*/
private List<String> getExecutedFlows(BpmnModel bpmnModel, List<HistoricActivityInstance> historicActivityInstances) {
List<String> flowIdList = new ArrayList<String>(); //流转线ID集合
List<FlowNode> historicFlowNodeList = new LinkedList<FlowNode>(); //全部活动实例
List<HistoricActivityInstance> finishedActivityInstanceList = new LinkedList<HistoricActivityInstance>(); //已完成的历史活动节点
for(HistoricActivityInstance historicActivityInstance : historicActivityInstances) {
historicFlowNodeList.add((FlowNode) bpmnModel.getMainProcess().getFlowElement(historicActivityInstance.getActivityId(), true));
if(historicActivityInstance.getEndTime() != null) {
finishedActivityInstanceList.add(historicActivityInstance);
}
}
/**遍历已完成的活动实例，从每个实例的outgoingFlows中找到已执行的*/
FlowNode currentFlowNode = null;
for(HistoricActivityInstance currentActivityInstance : finishedActivityInstanceList) {
/**获得当前活动对应的节点信息及outgoingFlows信息*/
currentFlowNode = (FlowNode) bpmnModel.getMainProcess().getFlowElement(currentActivityInstance.getActivityId(), true);
List<SequenceFlow> sequenceFlowList = currentFlowNode.getOutgoingFlows();
/**
* 遍历outgoingFlows并找到已流转的
* 满足如下条件任务已流转：
* 1.当前节点是并行网关或包含网关，则通过outgoingFlows能够在历史活动中找到的全部节点均为已流转
* 2.当前节点是以上两种类型之外的，通过outgoingFlows查找到的时间最近的流转节点视为有效流转
*/
FlowNode targetFlowNode = null;
if(BpmsActivityTypeEnum.PARALLEL_GATEWAY.getType().equals(currentActivityInstance.getActivityType())
|| BpmsActivityTypeEnum.INCLUSIVE_GATEWAY.getType().equals(currentActivityInstance.getActivityType())) {
for(SequenceFlow sequenceFlow : sequenceFlowList) { //遍历历史活动节点，找到匹配Flow目标节点的
targetFlowNode = (FlowNode) bpmnModel.getMainProcess().getFlowElement(sequenceFlow.getTargetRef(), true);
if(historicFlowNodeList.contains(targetFlowNode)) {
flowIdList.add(sequenceFlow.getId());
}
}
}else{
List<Map<String, String>> tempMapList = new LinkedList<Map<String,String>>();
for(SequenceFlow sequenceFlow : sequenceFlowList) { //遍历历史活动节点，找到匹配Flow目标节点的
for(HistoricActivityInstance historicActivityInstance : historicActivityInstances) {
if(historicActivityInstance.getActivityId().equals(sequenceFlow.getTargetRef())) {
tempMapList.add(UtilMisc.toMap("flowId", sequenceFlow.getId(), "activityStartTime", String.valueOf(historicActivityInstance.getStartTime().getTime())));
}
}
}
String flowId = null;
for (Map<String, String> map : tempMapList) {
flowId = map.get("flowId");
flowIdList.add(flowId);
}
/**遍历匹配的集合，取得开始时间最早的一个*/
/*long earliestStamp = 0L;
String flowId = null;
for (Map<String, String> map : tempMapList) {
long activityStartTime = Long.valueOf(map.get("activityStartTime"));
if (earliestStamp == 0 || earliestStamp >= activityStartTime) {
earliestStamp = activityStartTime;
flowId = map.get("flowId");
}
}
flowIdList.add(flowId);*/
}
}
return flowIdList;
}
/**获取发起人
* @param PROC_INST_ID_ //流程实例ID
* @return
*/
protected String getInitiator(String PROC_INST_ID_) {
HistoricProcessInstance hip = historyService.createHistoricProcessInstanceQuery().processInstanceId(PROC_INST_ID_).singleResult(); //获取历史流程实例
List<HistoricActivityInstance> hais = historyService.createHistoricActivityInstanceQuery().processInstanceId(PROC_INST_ID_)
.orderByHistoricActivityInstanceId().asc().list(); //获取流程中已经执行的节点，按照执行先后顺序排序
BpmnModel bpmnModel = repositoryService.getBpmnModel(hip.getProcessDefinitionId()); // 获取bpmnModel
List<FlowNode> historicFlowNodeList = new LinkedList<FlowNode>(); //全部活动实例
for(HistoricActivityInstance hai : hais) {
historicFlowNodeList.add((FlowNode) bpmnModel.getMainProcess().getFlowElement(hai.getActivityId(), true));
if(hai.getAssignee() != null) {
return hai.getAssignee(); //不为空的第一个节点办理人就是发起人
}
}
return null;
}
}
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