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Error Starting Engine

rodolfobarbeiro

I'm trying to start the engine through my application, but the following error occurs:

org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration cannot be cast to org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl‍

Someone can tell me why?

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Comments

frederikherema1

Do you have multiple versions of the activiti library on your classpath?

rodolfobarbeiro

Hi,

No, there is only one version.

I think I know what's going on…

My scenario is:

I build an application that uses "Activiti Engine" and I use my application within an OSGi environment. As a standalone application works correctly, but within the OSGi environment the error occurs.

It's probably some setting that is missing, but do not know.

Thanks for the reply!

rodolfobarbeiro

This is the error that occurs when starting the activiti engine inside the OSGi environment:

14-06-2011 17:28:08,736 [SpringOsgiExtenderThread-29] ERROR Error while closing command context<br>java.lang.ClassCastException: org.activiti.engine.impl.persistence.entity.PropertyEntity cannot be cast to org.activiti.engine.impl.db.PersistentObject<br> at org.activiti.engine.impl.db.DbSqlSession.selectById(DbSqlSession.java:207)<br> at org.activiti.engine.impl.db.DbSqlSession.dbSchemaUpdate(DbSqlSession.java:619)<br> at org.activiti.engine.impl.db.DbSqlSession.performSchemaOperationsProcessEngineBuild(DbSqlSession.java:872)<br> at org.activiti.engine.impl.SchemaOperationsProcessEngineBuild.execute(SchemaOperationsProcessEngineBuild.java:25)<br> at org.activiti.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:24)<br> at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:42)<br> at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33)<br> at org.activiti.engine.impl.ProcessEngineImpl.<init>(ProcessEngineImpl.java:77)

I'm using version 5.6.

Any idea what's going on?

frederikherema1

Looks like both classes are loaded using a different classloader. Not really an OSGI-expert myself

bhj2

I have the same exception. Did you find a solution?

mathiasd

I had the same problem using this line :

ProcessEngine engine = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource("activiti-application-context.xml", "processEngine").buildProcessEngine();<br>

The error was that the beanName expected here is the bean of the configuration not of the processEngine itself. The correct line is :

ProcessEngine engine = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource("activiti-application-context.xml", "processEngineConfiguration").buildProcessEngine();<br>