概述
jBPM Evaluation 示例具有悠久的歷史，也是傳統的jBPM示例，jBPM首頁（http://www.jboss.org/jbpm）就有Evaluation 示例的介紹，jBPM默認安裝完成Evaluation 示例也被默認安裝，Evaluation 示例流程如下圖：
Evaluation流程有7個節點：
- Start Event - 表示流程開始
- User Task - Self Evaluation
- Gateway - Diverging，表示流程執行到此分開兩支
- User Task - HR Manager Evaluation
- User Task - Project Manager Evaluation
- Gateway - Converging, 表示流程執行到此合併
- End Event - 表示流程執行結束
在Eclipse 中運行Evaluation 示例
根據jBPM 6 發佈，快速安裝，新功能介紹中介紹的步驟安裝jBPM 6，jbpm-installer目錄下會有sample目錄，該目錄中的sample爲jBPM Evaluation 示例。我將此示例整合到Github jBPM 6示例，詳細代碼見：https://github.com/kylinsoong/jbpm-6-examples/tree/master/evaluation
根據軟件安裝及資料下載中描述的方法下載jBPM Evaluation 示例到本地導入Eclipse，運行org.jbpm.demo.evaluation.ProcessMain可以執行Evaluation流程。ProcessMain代碼如下：
package org.jbpm.demo.evaluation;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import org.jbpm.services.task.identity.JBossUserGroupCallbackImpl;
import org.jbpm.test.JBPMHelper;
import org.kie.api.KieBase;
import org.kie.api.KieServices;
import org.kie.api.runtime.KieContainer;
import org.kie.api.runtime.KieSession;
import org.kie.api.runtime.manager.RuntimeEngine;
import org.kie.api.runtime.manager.RuntimeEnvironmentBuilder;
import org.kie.api.runtime.manager.RuntimeManager;
import org.kie.api.runtime.manager.RuntimeManagerFactory;
import org.kie.api.task.TaskService;
import org.kie.api.task.model.TaskSummary;
public class ProcessMain {
public static void main(String[] args) {
KieServices ks = KieServices.Factory.get();
KieContainer kContainer = ks.getKieClasspathContainer();
KieBase kbase = kContainer.getKieBase("kbase");
RuntimeManager manager = createRuntimeManager(kbase);
RuntimeEngine engine = manager.getRuntimeEngine(null);
KieSession ksession = engine.getKieSession();
TaskService taskService = engine.getTaskService();
// start a new process instance
Map<String, Object> params = new HashMap<String, Object>();
params.put("employee", "krisv");
params.put("reason", "Yearly performance evaluation");
ksession.startProcess("org.jbpm.demo.evaluation", params);
System.out.println("Process started ...");
// complete Self Evaluation
List<TaskSummary> tasks = taskService.getTasksAssignedAsPotentialOwner("krisv", "en-UK");
TaskSummary task = tasks.get(0);
System.out.println("'krisv' completing task " + task.getName() + ": " + task.getDescription());
taskService.start(task.getId(), "krisv");
Map<String, Object> results = new HashMap<String, Object>();
results.put("performance", "exceeding");
taskService.complete(task.getId(), "krisv", results);
// john from HR
tasks = taskService.getTasksAssignedAsPotentialOwner("john", "en-UK");
task = tasks.get(0);
System.out.println("'john' completing task " + task.getName() + ": " + task.getDescription());
taskService.start(task.getId(), "john");
results = new HashMap<String, Object>();
results.put("performance", "acceptable");
taskService.complete(task.getId(), "john", results);
// mary from PM
tasks = taskService.getTasksAssignedAsPotentialOwner("mary", "en-UK");
task = tasks.get(0);
System.out.println("'mary' completing task " + task.getName() + ": " + task.getDescription());
taskService.start(task.getId(), "mary");
results = new HashMap<String, Object>();
results.put("performance", "outstanding");
taskService.complete(task.getId(), "mary", results);
System.out.println("Process instance completed");
manager.disposeRuntimeEngine(engine);
manager.close();
System.exit(0);
}
private static RuntimeManager createRuntimeManager(KieBase kbase) {
JBPMHelper.startH2Server();
JBPMHelper.setupDataSource();
EntityManagerFactory emf = Persistence.createEntityManagerFactory("org.jbpm.persistence.jpa");
RuntimeEnvironmentBuilder builder = RuntimeEnvironmentBuilder.Factory.get().newDefaultBuilder().entityManagerFactory(emf).userGroupCallback(new JBossUserGroupCallbackImpl("classpath:/usergroups.properties")).knowledgeBase(kbase);
return RuntimeManagerFactory.Factory.get().newSingletonRuntimeManager(builder.get(), "org.jbpm.demo:evaluation:1.0");
}
}運行ProcessMain輸出的結果如下：
Process started ...
'krisv' completing task Self Evaluation: Please perform a self-evalutation.
'john' completing task Project Manager Evaluation: You need to evaluate krisv.
'mary' completing task HR Manager Evaluation: You need to evaluate krisv.
Process instance completed另外JUnit運行org.jbpm.demo.evaluation.ProcessTest同樣可以運行流程，同樣輸出結果：
Process started ...
'krisv' completing task Self Evaluation: Please perform a self-evalutation.
'john' completing task Project Manager Evaluation: You need to evaluate krisv.
'mary' completing task HR Manager Evaluation: You need to evaluate krisv.
Process instance completed在jBPM console中運行Evaluation 示例
任意根據jBPM 6 發佈，快速安裝，新功能介紹中介紹的步驟，或jBPM 6 使用 Mysql 替換默認的 H2 數據庫中介紹的步驟啓動jBPM 6，登錄jBPM console（http://localhost:8080/jbpm-console）。我們通過如下步驟運行示例。
啓動流程並進行Self Evaluation
使用krisv/krisv登錄jBPM console：
Authoring -> Project Authoring，在Project Explorer中選擇jbpm-playground，在jbpm-playground中選擇Evaluation，在右邊Project欄點擊Build & Deploy:
選擇Deploy -> Deployments會顯示部署的流程，選擇Process Management -> Process Definitions會列出所有定義部署的流程，在最右端點擊開始按鈕，開始執行流程，在彈出的輸入如下信息點擊開始：
選擇Task-> Task List，可以列出krisv所有權限的Self Evaluation，在列表右邊點擊Start圖標，Start圖標會變化爲Complete圖標，點擊Complete圖標，在流程右邊輸入good點擊Complete按鈕：
選擇Process Management -> Process Instance，接着在右邊Instance Details欄選擇Views -> Process Model，查看流程執行狀況：
如上圖Self Evaluation爲灰色，表示已經執行完成。
HR Manager Evaluation
退出當前登錄，使用mary/mary登錄jBPM console，選擇Task-> Task List，可以列出mary所有權限的HR Manager Evaluation，在列表右邊點擊Cliam圖標，Start圖標會變化爲Complete圖標，點擊Complete圖標，在流程右邊輸入good點擊Complete按鈕：
Project Manager Evaluation
退出當前登錄，使用john/john登錄jBPM console，選擇Task-> Task List，可以列出mary所有權限的Project Manager Evaluation，在列表右邊點擊Cliam圖標，Start圖標會變化爲Complete圖標，點擊Complete圖標，在流程右邊輸入good點擊Complete按鈕：
