如何禁用JBPM持久性? [英] How to disable JBPM persistance?

问题描述

我正在尝试使用JBPM 6进行一些测试.我目前正在工作一个简单的hello world bpmn2文件，该文件已正确加载.

I'm trying to implement a few tests with JBPM 6. I'm currently working a a simple hello world bpmn2 file, which is loaded correctly.

我对文档的了解(单击)是默认情况下应禁用持久性. 默认情况下，如果不配置流程引擎，则流程实例不会被持久化."

My understading of the documentation ( Click ) is that persistence should be disabled by default. "By default, if you do not configure the process engine otherwise, process instances are not made persistent."

但是，当我尝试实现它时，并没有做任何特殊的事情来启用持久性，每次尝试做任何事情时，我都会遇到与持久性相关的问题.

However, when I try to implement it, and without doing anything special to enable persistence, I hit persistence related problems every time I try to do anything.

javax.persistence.PersistenceException: No Persistence provider for EntityManager named org.jbpm.persistence.jpa
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:69)
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:47)
    at org.jbpm.runtime.manager.impl.jpa.EntityManagerFactoryManager.getOrCreate(EntityManagerFactoryManager.java:33)
    at org.jbpm.runtime.manager.impl.DefaultRuntimeEnvironment.init(DefaultRuntimeEnvironment.java:73)
    at org.jbpm.runtime.manager.impl.RuntimeEnvironmentBuilder.get(RuntimeEnvironmentBuilder.java:400)
    at org.jbpm.runtime.manager.impl.RuntimeEnvironmentBuilder.get(RuntimeEnvironmentBuilder.java:74)</blockquote>

我通过以下方式创建运行时环境

I Create my runtime environement the following way,

RuntimeEnvironment environment = RuntimeEnvironmentBuilder.Factory.get()
            .newDefaultInMemoryBuilder()
            .persistence(false)
            .addAsset(ResourceFactory.newClassPathResource("examples/helloworld.bpmn2.xml"), ResourceType.BPMN2)
            .addAsset(ResourceFactory.newClassPathResource("examples/newBPMNProcess.bpmn"), ResourceType.BPMN2)
            .get();

由于我的理解是默认情况下应禁用持久性，所以我看不到我在做什么错.它可以链接到某些依赖项中，但是我也没有找到任何东西.

As my understanding is that persistence should be disabled by default, I don't see what I'm doing wrong. It could be linked to something included in some of my dependencies, but I don't have found anything on it either.

有人已经遇到过相同的问题或有任何建议吗?

Has anybody faced the same issue already or has any advice.

谢谢

推荐答案

RuntimeManager是流程引擎和人工任务服务的组合.人工任务服务需要持久性(以开始人工任务等)，这就是为什么即使您将引擎配置为不使用持久性，它仍然要求数据源的原因.

A RuntimeManager is a combination of a process engine and a human task service. The human task service needs persistence (to start the human tasks etc.), that's why it's still asking for a datasource, even if you configure the engine to not use persistence.

如果您想使用没有我们的人工服务的引擎，则根本不需要持久性，但是在那种情况下，我不会使用RuntimeManager，只需直接从kbase创建一个ksession即可: http://docs.jboss.org/jbpm/v6.1 /userguide/jBPMCoreEngine.html#d0e1805

If you want to use an engine without our human task service, you don't need persistence at all, but I wouldn't use a RuntimeManager in that case, simply create a ksession from the kbase directly: http://docs.jboss.org/jbpm/v6.1/userguide/jBPMCoreEngine.html#d0e1805

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