流程实例的施行

流程实例的执行

流程定义【ProcessDefinition】：流程定义是对业务过程步骤的描述，在jBPM4中它表现为若干“活动”节点通过“转移（transition）”线条串联。

流程实例【ProcessInstance】：流程实例是表示流程定义在运行时特有的执行例程。打个比方：可以把流程定义理解为Java Class定义，而流程实例则可以理解为有Java Class定义实例化生成的Java Object对象。

执行【execution】：一个流程实例在其生命周期中，最典型的特征就是具有指向当前执行活动的指针—“执行”。

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流程定义的查询：

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import java.util.List;import org.jbpm.api.Configuration;import org.jbpm.api.NewDeployment;import org.jbpm.api.ProcessDefinition;import org.jbpm.api.ProcessEngine;import org.jbpm.api.RepositoryService;/** * @author fish * @version 1.0 * @created 2011-5-2 下午11:11:47 */public class ProcessDefinitionTest{/** * 描述 jBPM部署流程： 1.获得Configuration的实例。 2.获得ProcessEngine流程对象； * 3.获得RepositoryService对象 4.获得NewDeployment对象并增加流程资源 5.完成实际的部署 */public static void main(String[] args){Configuration configuration = new Configuration();ProcessEngine processEngine = configuration.buildProcessEngine();RepositoryService repositoryService = processEngine.getRepositoryService();NewDeployment newDeployment = repositoryService.createDeployment().addResourceFromClasspath("firstprocess.jpdl.xml");String deploymentId = newDeployment.deploy();System.out.println("deploymentId:" + deploymentId);List<ProcessDefinition> list = repositoryService.createProcessDefinitionQuery().list();for (ProcessDefinition processDefinition : list){System.out.println(processDefinition.getDeploymentId() + ", "+ processDefinition.getId() + ", "+processDefinition.getName());}System.out.println(list.size());}

?流程定义的执行：

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import org.jbpm.api.Configuration;import org.jbpm.api.ExecutionService;import org.jbpm.api.ProcessInstance;import org.jbpm.api.ProcessEngine;/**     * @author fish       * @version 1.0     * 流程实例的执行 * @created 2011-5-3 下午08:38:02    */public class ExecutionTest{public static void main(String[] args){Configuration configuration = new Configuration();ProcessEngine processEngine = configuration.buildProcessEngine();ExecutionService executionService = processEngine.getExecutionService();//ProcessInstance processInstance = executionService.startProcessInstanceByKey("firstprocess");//id={key}-{version}ProcessInstance processInstance = executionService.startProcessInstanceById("firstprocess-2");System.out.println("processInstance id"+processInstance.getId());System.out.println(processInstance.isEnded());}}

?流程定义的执行1：

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import org.jbpm.api.Configuration;import org.jbpm.api.ExecutionService;import org.jbpm.api.NewDeployment;import org.jbpm.api.ProcessInstance;import org.jbpm.api.RepositoryService;import org.jbpm.api.ProcessEngine;/**     * @author fish       * @version 1.0     * 流程实例的执行 * @created 2011-5-3 下午08:38:02    * 注意：使用jBPM时需要将Hibernate的MySQL方言org.hibernate.dialect.MySQLDialect修改为 * org.hibernate.dialect.MySQL5InnoDBDialect */public class ExecutionTest1{public static void main(String[] args){Configuration configuration = new Configuration();ProcessEngine processEngine = configuration.buildProcessEngine();RepositoryService repositoryService = processEngine.getRepositoryService();NewDeployment newDeployment = repositoryService.createDeployment().addResourceFromClasspath("firstprocess.jpdl.xml");newDeployment.deploy();ExecutionService executeService = processEngine.getExecutionService();ProcessInstance processInstance = executeService.startProcessInstanceByKey("firstprocess");System.out.println(processInstance.isEnded());ProcessInstance processInstance1 = executeService.signalExecutionById(processInstance.getId());System.out.println(processInstance1.isEnded());}}

? 注意：使用jBPM时需要将Hibernate的MySQL方言org.hibernate.dialect.MySQLDialect修改为

  org.hibernate.dialect.MySQL5InnoDBDialect