Hi, I'm the guy trying to use Jython w/ Jbpm. So, it's been a tough week trying to figure out why you Java guys make life so complex.
Tonight, finally, I can get a JbpmSessionFactory!
Anyway I am leaning towards running in embedded mode, with my own REST based "web service" engine. I might have multiple 'engines' running, so want to ask about 'pessimistic locking' mentioned in this forum when operating in this mode. I assume that pessimistic locking applies either to the jdbc connection (using hsqldb) or to hibernate. But I can't find mentioning of locking in either of those projects docs.
Where and how should I set this locking?
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One of my big struggles was figuring out how to tell JbpmConfiguration.java where my jbpm.cfg.xml file is. In looking at the code, I had thought that I could do this:
java -Djbpm.cfg.xml=/path/to/file -cp $CLASSPATH
But it seems that what I have to do is use the System property to specify just the name of the jbpm.cfg.xml file (like 'my file') and then ALSO make sure that the so-named file exists in the classpath somewhere.
So, there's no way to explicity specify configuration information without specifying it in a file in the classpath.. Is this normal java technique? Just curious.
Finally, in looking at JbpmConfiguration.java, I am wondering if this is a possible race condition:
private static Properties getProperties() {
if (properties==null) {
return initProperties();
}
return properties;
}
private static synchronized Properties initProperties() {shouldn't getProperties() also be synchronized? Otherwise two calls to getProperties could both end up blocking in the call to initProperties, such that the properties member would get initialized twice.
