从jbpm6 WorkItemHandler访问KieSession [英] Accessing KieSession from jbpm6 WorkItemHandler

问题描述

我正在将jbpm-console（6.0.0.Final）与自定义工作项处理程序一起使用。我已经在我的jbpm-console WAR中嵌入了一个自定义工作项处理程序JAR，如此处的帖子＃7所述：

I'm using jbpm-console (6.0.0.Final) with custom work item handlers. I've embedded a custom work item handlers JAR in my jbpm-console WAR as described in post #7 here:

https://community.jboss.org/thread/221748

到目前为止，我已经成功地在jbpm-console中启动了流程定义，并且启动了自定义的WorkItemHandler代码。

This is all fine so far, as I can successful start a process definition in jbpm-console, and it kicks off my custom WorkItemHandler code.

但是，我想在WorkItemHandler中进行设置ProcessInstance上的一些变量。当我尝试类似这样的操作时：

However, in my WorkItemHandler, I want to set some variables on the ProcessInstance. When I try something like this:

public void executeWorkItem(WorkItem workItem, WorkItemManager manager) {
    KieServices ks = KieServices.Factory.get();
    KieContainer kContainer = ks.getKieClasspathContainer();

    // BLOWS UP HERE
    //
    KieSession session = kContainer.newKieSession();

    WorkflowProcessInstance processInstance = 
      session.getProcessInstance(workItem.getProcessInstanceId());

    // SET VARIABLE
    processInstance.setVariable("foo", "bar");
}

它找不到默认的KieSession：

It "Cannot find a default KieSession":

11:21:03,177 ERROR Exception: java.lang.RuntimeException: Cannot find a default KieSession
at org.drools.compiler.kie.builder.impl.KieContainerImpl.findKieSessionModel(KieContainerImpl.java:302) [drools-compiler-6.0.0.Final.jar:6.0.0.Final]
at org.drools.compiler.kie.builder.impl.KieContainerImpl.newKieSession(KieContainerImpl.java:295) [drools-compiler-6.0.0.Final.jar:6.0.0.Final]
at org.drools.compiler.kie.builder.impl.KieContainerImpl.newKieSession(KieContainerImpl.java:278) [drools-compiler-6.0.0.Final.jar:6.0.0.Final]

我在这里想念什么？我是否需要设置其他内容？我只是在使用开箱即用（自定义工作项处理程序嵌入式jar除外）从此处安装演示：

What am I missing here? Do I have to set something additional up? I'm just using the out-of-the-box (with the exception of the custom work item handler embedded jar) "demo" install from here:

http://sourceforge.net/projects/jbpm/files/jBPM ％206 / jbpm-6.0.0.Final

谢谢！

推荐答案

资源文件夹中是否有kmodule.xml？如果不是这样，那就是问题所在。您可以拥有一个非常简单的xml文件，例如：

Do you have a kmodule.xml in your resources folder? If not maybe that's the problem. You can have a pretty simple xml file like:

<kmodule xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xmlns="http://jboss.org/kie/6.0.0/kmodule">
</kmodule>

这篇关于从jbpm6 WorkItemHandler访问KieSession的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！