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jBPM5中的Reusable Sub-Process是在主流程里面执行另为一个流程(子流程),当流程执行到Reusable Sub-Process节点时jBPM5流程执行引擎根据提供的流程(子流程)ID,Reusable Sub-Process示例流程如下(主流程和子流程):
主流程
子流程
Reusable Sub-Process示例流程运行时传入三条字符串message 1,message 2和message 3,在流程运行时主流程的Format tag节点中生成一个tag,在子流程Apply Tag中将生成的tsg添加到每一条消息的末尾,流程运行结束输出三条消息确认设定tag情况。主流程的Format tag节点为Service Task节点,运行时执行的Java代码如下:
System.out.println("Parent-process id = "+kcontext.getProcessInstance().getId());
java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat("mm-dd-yyyy");
kcontext.setVariable("tag", sdf.format(new java.util.Date(System.currentTimeMillis())));
子流程Apply Tag节点为Service Task节点,运行时执行的Java代码如下:
System.out.println("Child-process id = "+kcontext.getProcessInstance().getId());
java.util.List<String> taggedMessages = new java.util.ArrayList<String>();
for (Object message : internalMessages){taggedMessages.add(((String)message)+" - "+internalTag);
}
kcontext.setVariable("internalMessages",taggedMessages);
- Reusable Sub-Process示例流程运行代码:https://github.com/kylinsoong/.../ReusableSubProcessStart.java
- Reusable Sub-Process示例流程:https://github.com/kylinsoong/.../reusableSubProcess-Parent.bpmn, https://github.com/kylinsoong/.../reusableSubProcess-Child.bpmn
运行org.jbpm.quickstarts.subprocess.ReusableSubProcessStart将会运行Reusable Sub-Process示例流程,ReusableSubProcessStart代码如下:
package org.jbpm.quickstarts.subprocess;import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;import org.drools.runtime.StatefulKnowledgeSession;
import org.drools.runtime.process.ProcessInstance;
import org.drools.runtime.process.WorkflowProcessInstance;
import org.jbpm.quickstarts.QuickStartBase;public class ReusableSubProcessStart extends QuickStartBase {public static void main(String[] args) {new ReusableSubProcessStart().test();}public void test() {StatefulKnowledgeSession ksession = createKnowledgeSession("quickstarts/reusableSubProcess-Parent.bpmn", "quickstarts/reusableSubProcess-Child.bpmn");List<String> messages = new ArrayList<String>();messages.add("message 1");messages.add("message 2");messages.add("message 3");Map<String,Object> parameters = new HashMap<String, Object>();parameters.put("messages", messages); //Start the process using its idProcessInstance process = ksession.startProcess("org.jbpm.quickstarts.reusablesubprocessparent",parameters);messages = (List<String>) ((WorkflowProcessInstance)process).getVariable("messages");for (String message : messages) {System.out.println("Message = "+message);}ksession.dispose();}}
Reusable Sub-Process示例流程运行输出结果如下:
Parent-process id = 1
Child-process id = 2
Message = message 1 - 01-31-2013
Message = message 2 - 01-31-2013
Message = message 3 - 01-31-2013
如上01-31-2013为设定的tag。
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