topic Re: Process Variable Problem in Alfresco Archive

Process Variable Problem

se040 — Mon, 19 Nov 2012 01:34:22 GMT

Hi,I am using the activity engine in a small web application configured like this: ProcessEngines.init(); ProcessEngineConfiguration engConf = ProcessEngineConfiguration .createStandaloneProcessEngineConfiguration(); engConf.setDataSourceJndiName(dataSourceJndiN

Re: Process Variable Problem

frederikherema1 — Mon, 19 Nov 2012 09:10:32 GMT

Seems like a classloading-issue, I guess it has something to do with this:


engConf.setClassLoader(Thread.currentThread().getContextClassLoader()); //added after problem ocurred!

Pleas note, activiti chains class-loading (first custom class loader set on engConf, second CurrentThread.CCL, and lastly class-local one. It seems that these class loaders aren't used when deserializing the variables, this will be resolved (also see https://github.com/Activiti/Activiti/pull/3/files).

A solution for now (until 5.11 is released) is to use a custom variable-type (extending serializableType) deserializing the object using the right class loader.

Re: Process Variable Problem

se040 — Tue, 20 Nov 2012 03:06:00 GMT

Thanks for the answer, but I didn't really understand what you mean by using a custom variable type, sorry. All the variables / types I use implement Serializable.

Re: Process Variable Problem

frederikherema1 — Wed, 21 Nov 2012 08:16:21 GMT

Yes, but there is a problem with the serializable variable-type in case a serializable class isn't loaded by the class-loader they loaded the activiti-engine jar itself, when DEserializing.

You have to wait for 5.11, beginning of next month, use 5.11-SNAPSHOT OR use a custom variable-type that fixes the deserialisation