以程式設計方式與工作流程互動

當自訂並擴充您的工作流程時，您可以存取工作流程物件：

• 使用Workflow Java API
• 在ECMA指令碼中獲取工作流對象
• 使用Workflow REST API

使用Workflow Java API

工作流Java API由com.adobe.granite.workflow包和多個子包組成。 API中最重要的成員是com.adobe.granite.workflow.WorkflowSession類。 WorkflowSession類別提供對設計時和運行時工作流對象的訪問：

• 工作流模型
• 工作項目
• 工作流程實例
• 工作流資料
• 收件箱項目

該類還提供了幾種干預工作流生命週期的方法。

下表提供在以程式設計方式與工作流程互動時，要使用的數個關鍵Java物件參考檔案的連結。 下面的示例演示如何獲取和使用代碼中的類對象。

在ECMA指令碼中獲取工作流對象

如查找指令碼中所述，AEM（透過Apache Sling）提供執行伺服器端ECMA指令碼的ECMA指令碼引擎。 org.apache.sling.scripting.core.ScriptHelper類別可立即作為sling變數供指令碼使用。

ScriptHelper類提供對SlingHttpServletRequest的訪問，您可用於最終獲取WorkflowSession對象；例如：

var wfsession = sling.getRequest().getResource().getResourceResolver().adaptTo(Packages.com.adobe.granite.workflow.WorkflowSession);

使用Workflow REST API

Workflow Console大量使用REST API;因此，本頁面說明了工作流程的REST API。

REST API支援下列動作：

• 啟動或停止工作流服務
• 建立、更新或刪除工作流程模型
• 啟動、暫停、繼續或終止工作流實例
• 完成或委派工作項目

在本頁中，假設AEM在連接埠4502的localhost上執行，且安裝內容為" /"(root)。 如果安裝時不適用，則需相應調整HTTP請求所適用的URI。

GET請求支援的轉換是JSON轉換。 GET的URL應具有.json副檔名，例如：

http://localhost:4502/etc/workflow.json

管理工作流實例

下列HTTP請求方法適用於：

http://localhost:4502/etc/workflow/instances

按狀態管理工作流實例

下列HTTP請求方法適用於：

http://localhost:4502/etc/workflow/instances.{state}

使用工作流實例的ID管理工作流實例

下列HTTP請求方法適用於：

http://localhost:4502/etc/workflow/instances/{id}

管理工作流模型

下列HTTP請求方法適用於：

http://localhost:4502/etc/workflow/models

範例：在瀏覽器中，對http://localhost:4502/etc/workflow/models.json的請求會產生類似下列的json回應：

[
    {"uri":"/var/workflow/models/activationmodel"}
    ,{"uri":"/var/workflow/models/dam/adddamsize"}
    ,{"uri":"/var/workflow/models/cloudconfigs/dtm-reactor/library-download"}
    ,{"uri":"/var/workflow/models/ac-newsletter-workflow-simple"}
    ,{"uri":"/var/workflow/models/dam/dam-create-language-copy"}
    ,{"uri":"/var/workflow/models/dam/dam-create-and-translate-language-copy"}
    ,{"uri":"/var/workflow/models/dam-indesign-proxy"}
    ,{"uri":"/var/workflow/models/dam-xmp-writeback"}
    ,{"uri":"/var/workflow/models/dam-parse-word-documents"}
    ,{"uri":"/var/workflow/models/dam/process_subasset"}
    ,{"uri":"/var/workflow/models/dam/dam_set_last_modified"}
    ,{"uri":"/var/workflow/models/dam/dam-autotag-assets"}
    ,{"uri":"/var/workflow/models/dam/update_asset"}
    ,{"uri":"/var/workflow/models/dam/update_asset_offloading"}
    ,{"uri":"/var/workflow/models/dam/dam-update-language-copy"}
    ,{"uri":"/var/workflow/models/dam/update_from_lightbox"}
    ,{"uri":"/var/workflow/models/cloudservices/DTM_bundle_download"}
    ,{"uri":"/var/workflow/models/dam/dam_download_asset"}
    ,{"uri":"/var/workflow/models/dam/dynamic-media-encode-video"}
    ,{"uri":"/var/workflow/models/dam/dynamic-media-video-thumbnail-replacement"}
    ,{"uri":"/var/workflow/models/dam/dynamic-media-video-user-uploaded-thumbnail"}
    ,{"uri":"/var/workflow/models/newsletter_bounce_check"}
    ,{"uri":"/var/workflow/models/projects/photo_shoot_submission"}
    ,{"uri":"/var/workflow/models/projects/product_photo_shoot"}
    ,{"uri":"/var/workflow/models/projects/approval_workflow"}
    ,{"uri":"/var/workflow/models/prototype-01"}
    ,{"uri":"/var/workflow/models/publish_example"}
    ,{"uri":"/var/workflow/models/publish_to_campaign"}
    ,{"uri":"/var/workflow/models/screens/publish_to_author_bin"}
    ,{"uri":"/var/workflow/models/s7dam/request_to_publish_to_youtube"}
    ,{"uri":"/var/workflow/models/projects/request_copy"}
    ,{"uri":"/var/workflow/models/projects/request_email"}
    ,{"uri":"/var/workflow/models/projects/request_landing_page"}
    ,{"uri":"/var/workflow/models/projects/request_launch"}
    ,{"uri":"/var/workflow/models/request_for_activation"}
    ,{"uri":"/var/workflow/models/request_for_deactivation"}
    ,{"uri":"/var/workflow/models/request_for_deletion"}
    ,{"uri":"/var/workflow/models/request_for_deletion_without_deactivation"}
    ,{"uri":"/var/workflow/models/request_to_complete_move_operation"}
    ,{"uri":"/var/workflow/models/reverse_replication"}
    ,{"uri":"/var/workflow/models/salesforce-com-export"}
    ,{"uri":"/var/workflow/models/scene7"}
    ,{"uri":"/var/workflow/models/scheduled_activation"}
    ,{"uri":"/var/workflow/models/scheduled_deactivation"}
    ,{"uri":"/var/workflow/models/screens/screens-update-asset"}
    ,{"uri":"/var/workflow/models/translation"}
    ,{"uri":"/var/workflow/models/s7dam/request_to_remove_from_youtube"}
    ,{"uri":"/var/workflow/models/wcm-translation/create_language_copy"}
    ,{"uri":"/var/workflow/models/wcm-translation/prepare_translation_project"}
    ,{"uri":"/var/workflow/models/wcm-translation/translate-i18n-dictionary"}
    ,{"uri":"/var/workflow/models/wcm-translation/sync_translation_job"}
    ,{"uri":"/var/workflow/models/wcm-translation/translate-language-copy"}
    ,{"uri":"/var/workflow/models/wcm-translation/update_language_copy"}
]

管理特定工作流模型

下列HTTP請求方法適用於：

http://localhost:4502*{uri}*

其中*{uri}*是儲存庫中模型節點的路徑。

範例：在瀏覽器中，對http://localhost:4502/var/workflow/models/publish_example.json的請求會傳回類似下列程式碼的json回應：

{
  "id":"/var/workflow/models/publish_example",
  "title":"Publish Example",
  "version":"1.0",
  "description":"This example shows a simple review and publish process.",
  "metaData": 
  {
    "multiResourceSupport":"true",
    "tags":"wcm,publish"
  },
  "nodes":
  [{
    "id":"node0",
    "type":"START",
    "title":"Start",
    "description":"The start node of the workflow.",
    "metaData":
    {
    }
  },
  {
    "id":"node1",
    "type":"PARTICIPANT",
    "title":"Validate Content",
    "description":"Validate the modified content.",
    "metaData":
    {
      "PARTICIPANT":"admin"
    }
  },
  {
    "id":"node2",
    "type":"PROCESS",
    "title":"Publish Content",
    "description":"Publish the modified content.",
    "metaData":
    {
      "PROCESS_AUTO_ADVANCE":"true",
      "PROCESS":"com.day.cq.wcm.workflow.process.ActivatePageProcess"
    }
  },
  {
    "id":"node3",
    "type":"END",
    "title":"End",
    "description":"The end node of the workflow.",
    "metaData":
    {
    }
  }],
  "transitions":
  [{
    "from":"node0",
    "to":"node1",
    "metaData":
    {
    }
  },
  {
    "from":"node1",
    "to":"node2",
    "metaData":
    {
    }
  },
  {
    "from":"node2",
    "to":"node3",
    "metaData":
    {
    }
  }
]}

按版本管理工作流模型

下列HTTP請求方法適用於：

http://localhost:4502/etc/workflow/models/{id}.{version}

管理（用戶）收件箱

下列HTTP請求方法適用於：

http://localhost:4502/bin/workflow/inbox

使用WorkItem ID管理（用戶）收件箱

下列HTTP請求方法適用於：

http://localhost:4502/bin/workflow/inbox/{id}

範例

如何取得所有執行中工作流程的清單及其ID

若要取得所有執行中工作流程的清單，請執行下列動作：

http://localhost:4502/etc/workflow/instances.RUNNING.json

如何取得所有執行中工作流程的清單及其ID —— 使用curl進行REST

使用捲曲的範例：

curl -u admin:admin http://localhost:4502/etc/workflow/instances.RUNNING.json

結果中顯示的uri可作為其它命令中的實例id;例如：

[
    {"uri":"/etc/workflow/instances/server0/2017-03-08/request_for_activation_1"}
]

如何更改工作流標題

要更改工作流控制台的​實例​頁籤中顯示的​工作流標題，請發送POST命令：

• 至: http://localhost:4502/etc/workflow/instances/{id}

• 使用下列參數：

  • action:其價值必須是： UPDATE
  • workflowTitle:工作流程標題

如何使用curl更改工作流標題- REST

使用捲曲的範例：

curl -u admin:admin -d "action=UPDATE&workflowTitle=myWorkflowTitle" http://localhost:4502/etc/workflow/instances/{id}

# for example
curl -u admin:admin -d "action=UPDATE&workflowTitle=myWorkflowTitle" http://localhost:4502/etc/workflow/instances/server0/2017-03-08/request_for_activation_1

如何列出所有工作流模型

若要取得所有可用工作流程模型的清單，請執行下列動作：

http://localhost:4502/etc/workflow/models.json

如何列出所有工作流模型——使用curl的REST

使用捲曲的範例：

curl -u admin:admin http://localhost:4502/etc/workflow/models.json

獲取WorkflowSession對象

com.adobe.granite.workflow.WorkflowSession類可從javax.jcr.Session對象或org.apache.sling.api.resource.ResourceResolver對象進行調整。

獲取WorkflowSession對象- Java

在JSP指令碼（或Servlet類的Java代碼）中，使用HTTP請求對象獲取SlingHttpServletRequest對象，該對象提供對ResourceResolver對象的訪問。 將ResourceResolver物件調整為WorkflowSession。

<%
%><%@include file="/libs/foundation/global.jsp?lang=zh-Hant"%><%
%><%@page session="false" 
    import="com.adobe.granite.workflow.WorkflowSession,
  org.apache.sling.api.SlingHttpServletRequest"%><%

SlingHttpServletRequest slingReq = (SlingHttpServletRequest)request;
WorkflowSession wfSession = slingReq.getResourceResolver().adaptTo(WorkflowSession.class);
%>

獲取WorkflowSession對象- ECMA指令碼

使用sling變數來取得用於取得ResourceResolver物件的SlingHttpServletRequest物件。 將ResourceResolver物件調整至WorkflowSession物件。

var wfsession = sling.getRequest().getResource().getResourceResolver().adaptTo(Packages.com.adobe.granite.workflow.WorkflowSession);

建立、讀取或刪除工作流模型

下列範例說明如何存取工作流程模型：

• Java和ECMA指令碼的代碼使用WorkflowSession.createNewModel方法。
• curl命令可直接使用其URL訪問模型。

使用的範例：

1. 建立模型（ID為/var/workflow/models/mymodel/jcr:content/model）。
2. 刪除模型。

建立新模型時：

• 工作流模型編輯器要求模型使用/var/workflow/models下方的特定節點結構。 模型的父節點必須為cq:Page類型，該類型具有jcr:content節點，其屬性值如下：

  • sling:resourceType: cq/workflow/components/pages/model
  • cq:template: /libs/cq/workflow/templates/model

  建立模型時，必須首先建立此cq:Page節點，並使用其jcr:content節點作為模型節點的父節點。

• 某些方法識別模型所需的id參數是儲存庫中模型節點的絕對路徑：

  /var/workflow/models/<*model_name>*/jcr:content/model

  注意

  請參閱如何列出所有工作流模型。

建立、讀取或刪除工作流模型- Java

<%@include file="/libs/foundation/global.jsp?lang=zh-Hant"%><%
%><%@page session="false" import="com.adobe.granite.workflow.WorkflowSession,
                 com.adobe.granite.workflow.model.WorkflowModel,
             org.apache.sling.api.SlingHttpServletRequest"%><%

SlingHttpServletRequest slingReq = (SlingHttpServletRequest)request;
WorkflowSession wfSession = slingReq.getResourceResolver().adaptTo(WorkflowSession.class);
/* Create the parent page */
String modelRepo = new String("/var/workflow/models");
String modelTemplate = new String ("/libs/cq/workflow/templates/model");
String modelName = new String("mymodel");
Page modelParent = pageManager.create(modelRepo, modelName, modelTemplate, "My workflow model");

/* create the model */
String modelId = new String(modelParent.getPath()+"/jcr:content/model")
WorkflowModel model = wfSession.createNewModel("Made using Java",modelId);

/* delete the model */
wfSession.deleteModel(modelId);
%>

建立、讀取或刪除工作流模型- ECMA指令碼

var resolver = sling.getRequest().getResource().getResourceResolver();
var wfSession = resolver.adaptTo(Packages.com.adobe.granite.workflow.WorkflowSession);
var pageManager = resolver.adaptTo(Packages.com.day.cq.wcm.api.PageManager);

//create the parent page node
var workflowPage = pageManager.create("/var/workflow/models", "mymodel", "/libs/cq/workflow/templates/model", "Created via ECMA Script");
var modelId = workflowPage.getPath()+ "/jcr:content/model";
//create the model
var model = wfSession.createNewModel("My Model", modelId);
//delete the model
var model = wfSession.deleteModel(modelId);

刪除工作流模型——使用curl進行REST

# deleting the model by its id
curl -u admin:admin -X DELETE http://localhost:4502/etc/workflow/models/{id}

檢查工作流狀態時過濾掉系統工作流

您可以使用WorkflowStatus API來檢索有關節點工作流狀態的資訊。

各種方法都有參數：

excludeSystemWorkflows

此參數可設為true，以指出應將系統工作流程排除在相關結果之外。

您可以更新OSGi組態 Adobe Granite Workflow PayloadMapCache，此組態指定要視為系統工作流程的工作流程Models。 預設（執行時期）工作流程模型為：

• /var/workflow/models/scheduled_activation/jcr:content/model
• /var/workflow/models/scheduled_deactivation/jcr:content/model

逾時後的自動進階參與者步驟

如果您需要自動前進​參與者​步驟，但該步驟尚未在預先定義的時間內完成，您可以：

1. 實作OSGI事件偵聽器，以監聽任務建立和修改。

2. 指定逾時（截止日期），然後建立要在當時觸發的排程sling工作。

3. 編寫逾時到期時會通知的工作處理常式，並觸發工作。

   如果任務尚未完成，此處理程式將對任務執行所需的操作

與工作流實例交互

以下提供如何與工作流程例項互動（程式化）的基本範例。

與工作流實例交互- Java

// starting a workflow
WorkflowModel model = wfSession.getModel(workflowId);
WorkflowData wfData = wfSession.newWorkflowData("JCR_PATH", repoPath);
wfSession.startWorkflow(model, wfData);

// querying and managing a workflow
Workflow[] workflows workflows = wfSession.getAllWorkflows();
Workflow workflow= wfSession.getWorkflow(id);
wfSession.suspendWorkflow(workflow);
wfSession.resumeWorkflow(workflow);
wfSession.terminateWorkflow(workflow);

與工作流實例交互- ECMA指令碼

// starting a workflow
var model = wfSession.getModel(workflowId);
var wfData = wfSession.newWorkflowData("JCR_PATH", repoPath);
wfSession.startWorkflow(model, wfData);

// querying and managing a workflow
var workflows = wfSession.getWorkflows(“RUNNING“);
var workflow= wfSession.getWorkflow(id);
wfSession.suspendWorkflow(workflow);
wfSession.resumeWorkflow(workflow);
wfSession.terminateWorkflow(workflow);

與工作流實例交互——使用curl進行REST

• 啟動工作流

  # starting a workflow
  curl -d "model={id}&payloadType={type}&payload={payload}" http://localhost:4502/etc/workflow/instances
  
  # for example:
  curl -u admin:admin -d "model=/var/workflow/models/request_for_activation&payloadType=JCR_PATH&payload=/content/we-retail/us/en/products" http://localhost:4502/etc/workflow/instances
  

• 列出例項

  # listing the instances
  curl -u admin:admin http://localhost:4502/etc/workflow/instances.json
  

  這將列出所有實例；例如：

  [
      {"uri":"/var/workflow/instances/server0/2018-02-26/prototype-01_1"}
      ,{"uri":"/var/workflow/instances/server0/2018-02-26/prototype-01_2"}
  ]
  

  注意

  請參閱如何取得所有執行中工作流程的清單及其ID，以列出具特定狀態的例項。

• 暫停工作流

  # suspending a workflow
  curl -d "state=SUSPENDED" http://localhost:4502/etc/workflow/instances/{id}
  
  # for example:
  curl -u admin:admin -d "state=SUSPENDED" http://localhost:4502/etc/workflow/instances/server0/2017-03-08/request_for_activation_1
  

• 繼續工作流程

  # resuming a workflow
  curl -d "state=RUNNING" http://localhost:4502/etc/workflow/instances/{id}
  
  # for example:
  curl -u admin:admin -d "state=RUNNING" http://localhost:4502/etc/workflow/instances/server0/2017-03-08/request_for_activation_1
  

• 終止工作流實例

  # terminating a workflow
  curl -d "state=ABORTED" http://localhost:4502/etc/workflow/instances/{id}
  
  # for example:
  curl -u admin:admin -d "state=ABORTED" http://localhost:4502/etc/workflow/instances/server0/2017-03-08/request_for_activation_1
  

與工作項目互動

以下提供如何與工作項目互動（程式化）的基本範例。

與工作項目互動- Java

// querying work items
WorkItem[] workItems = wfSession.getActiveWorkItems();
WorkItem workItem = wfSession.getWorkItem(id);

// getting routes
List<Route> routes = wfSession.getRoutes(workItem);

// delegating
Iterator<Participant> delegatees = wfSession.getDelegatees(workItem);
wfSession.delegateWorkItem(workItem, delegatees.get(0));

// completing or advancing to the next step
wfSession.complete(workItem, routes.get(0));

與工作項目互動- ECMA指令碼

// querying work items
var workItems = wfSession.getActiveWorkItems();
var workItem = wfSession.getWorkItem(id);

// getting routes
var routes = wfSession.getRoutes(workItem);

// delegating
var delegatees = wfSession.getDelegatees(workItem);
wfSession.delegateWorkItem(workItem, delegatees.get(0));

// completing or advancing to the next step
wfSession.complete(workItem, routes.get(0));

與工作項目互動——使用捲曲進行REST

• 從收件箱列出工作項目

  # listing the work items
  curl -u admin:admin http://localhost:4502/bin/workflow/inbox
  

  「收件箱」中當前工作項目的詳細資訊將列出；例如：

  [{
      "uri_xss": "/var/workflow/instances/server0/2018-02-26/prototype-01_2/workItems/node2_var_workflow_instances_server0_2018-02-26_prototype-01_2",
      "uri": "/var/workflow/instances/server0/2018-02-26/prototype-01_2/workItems/node2_var_workflow_instances_server0_2018-02-26_prototype-01_2",
      "currentAssignee_xss": "workflow-administrators",
      "currentAssignee": "workflow-administrators",
      "startTime": 1519656289274,
      "payloadType_xss": "JCR_PATH",
      "payloadType": "JCR_PATH",
      "payload_xss": "/content/we-retail/es/es",
      "payload": "/content/we-retail/es/es",
      "comment_xss": "Process resource is null",
      "comment": "Process resource is null",
      "type_xss": "WorkItem",
      "type": "WorkItem"
    },{
      "uri_xss": "configuration/configure_analyticstargeting",
      "uri": "configuration/configure_analyticstargeting",
      "currentAssignee_xss": "administrators",
      "currentAssignee": "administrators",
      "type_xss": "Task",
      "type": "Task"
    },{
      "uri_xss": "configuration/securitychecklist",
      "uri": "configuration/securitychecklist",
      "currentAssignee_xss": "administrators",
      "currentAssignee": "administrators",
      "type_xss": "Task",
      "type": "Task"
    },{
      "uri_xss": "configuration/enable_collectionofanonymoususagedata",
      "uri": "configuration/enable_collectionofanonymoususagedata",
      "currentAssignee_xss": "administrators",
      "currentAssignee": "administrators",
      "type_xss": "Task",
      "type": "Task"
    },{
      "uri_xss": "configuration/configuressl",
      "uri": "configuration/configuressl",
      "currentAssignee_xss": "administrators",
      "currentAssignee": "administrators",
      "type_xss": "Task",
      "type": "Task"
    }
  

• 委託工作項目

  # delegating
  curl -d "item={item}&delegatee={delegatee}" http://localhost:4502/bin/workflow/inbox
  
  # for example: 
  curl -u admin:admin -d "item=/etc/workflow/instances/server0/2017-03-08/request_for_activation_1/workItems/node1_etc_workflow_instances_server0_2017-03-08_request_for_act_1&delegatee=administrators" http://localhost:4502/bin/workflow/inbox
  

  注意

  delegatee必須是工作流程步驟的有效選項。

• 完成或推動工作項目進入下一步

  # retrieve the list of routes; the results will be similar to {"results":1,"routes":[{"rid":"233123169","label":"End","label_xss":"End"}]}
  http://localhost:4502/etc/workflow/instances/<path-to-the-workitem>.routes.json
  
  # completing or advancing to the next step; use the appropriate route ID (rid value) from the above list
  curl -d "item={item}&route={route}" http://localhost:4502/bin/workflow/inbox
  
  # for example:
  curl -u admin:admin -d "item=/etc/workflow/instances/server0/2017-03-08/request_for_activation_1/workItems/node1_etc_workflow_instances_server0_2017-03-08_request_for_activation_1&route=233123169" http://localhost:4502/bin/workflow/inbox
  

監聽工作流事件

使用OSGi事件框架監聽 com.adobe.granite.workflow.event.WorkflowEvent類定義的事件。 此類別也提供數種有用的方法，以取得事件主題的相關資訊。 例如，getWorkItem方法返回事件中涉及的工作項目的WorkItem對象。

下列范常式式碼定義一種服務，可監聽工作流程事件並根據事件類型執行工作。

package com.adobe.example.workflow.listeners;

import org.apache.sling.event.jobs.JobProcessor;
import org.apache.sling.event.jobs.JobUtil;

import org.osgi.service.event.Event;
import org.osgi.service.event.EventHandler;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.Service;

import com.adobe.granite.workflow.event.WorkflowEvent;
import com.adobe.granite.workflow.exec.WorkItem;

/**
 * The <code>WorkflowEventCatcher</code> class listens to workflow events. 
 */
@Component(metatype=false, immediate=true)
@Service(value=org.osgi.service.event.EventHandler.class)
public class WorkflowEventCatcher implements EventHandler, JobProcessor {

 @Property(value=com.adobe.granite.workflow.event.WorkflowEvent.EVENT_TOPIC)
 static final String EVENT_TOPICS = "event.topics";

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

 public void handleEvent(Event event) {
  JobUtil.processJob(event, this);
 }

 public boolean process(Event event) {
  logger.info("Received event of topic: " + event.getTopic());
  String topic = event.getTopic();

  try {
   if (topic.equals(WorkflowEvent.EVENT_TOPIC)) {
    WorkflowEvent wfevent = (WorkflowEvent)event;
    String eventType = wfevent.getEventType();
    String instanceId = wfevent.getWorkflowInstanceId();

    if (instanceId != null) {
     //workflow instance events
     if (eventType.equals(WorkflowEvent.WORKFLOW_STARTED_EVENT) ||
       eventType.equals(WorkflowEvent.WORKFLOW_RESUMED_EVENT) ||
       eventType.equals(WorkflowEvent.WORKFLOW_SUSPENDED_EVENT)) {
      // your code comes here...
     } else if (
       eventType.equals(WorkflowEvent.WORKFLOW_ABORTED_EVENT) ||
       eventType.equals(WorkflowEvent.WORKFLOW_COMPLETED_EVENT)) {
      // your code comes here...
     }
     // workflow node event
     if (eventType.equals(WorkflowEvent.NODE_TRANSITION_EVENT)) {
      WorkItem currentItem = (WorkItem) event.getProperty(WorkflowEvent.WORK_ITEM);
      // your code comes here...
     }
    }
   }
  } catch(Exception e){
   logger.debug(e.getMessage());
   e.printStackTrace();
  }
  return true;
 }
}