I followed this demo.
http://code.google.com/p/jbpm4-spring-demo/source/browse/trunk/src/main/resources/be/inze/spring/demo/jbpm.cfg.xml
And I don't know the exact meanings or possible value for read-contexts either. But I do remember seeing something related to this when digging in the source code.
Hy , sorry by my english,
Meaby can you help me...
I have integrated jbpm4 with spring and hibernate, and everything work perfect, but i have problems with the delete, i can`t delete anything from de jbpm database, it throw me and "java.lang.NullPointerException" , i`don´t know what hapend because all the functions of the jbpm Api work perfect, createUser, CrearDeploy , etc...