Hello, Working on JBoss IDE 2.0.0 BETA2 with jBPM 3.1.3, I was trying to store some data to my own table, instead of jbpm_variableinstance. The JUnit test ran perfectly, but an "org.hibernate.MappingException: Unknown entity" exception occurred while running on Tomcat 5.5 after deployment. Here goes the details: 1. the table creation script: | create table student ( | id varchar(100) not null default '', | name varchar(20) default '', | age int(11) default 0, | primary key (id) | ); | 2. the corresponding Student classes (generated by hibernate synchronizer): | package dgbdatamodel; | ... | // primary key | private java.lang.String id; | | // fields | private java.lang.String name; | private java.lang.Integer age; | ... | // getters and setters | 3. the mapping file (also generated by hibernate synchronizer): | <?xml version="1.0"?> | <!DOCTYPE hibernate-mapping PUBLIC | "-//Hibernate/Hibernate Mapping DTD//EN" | "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" > | | <hibernate-mapping package="dgbdatamodel"> | <class | name="Student" | table="student" | > | <meta attribute="sync-DAO">false</meta> | <id | name="Id" | type="string" | column="id" | > | <generator class="uuid.hex"/> | </id> | | <property | name="Name" | column="name" | type="string" | not-null="false" | length="20" | /> | <property | name="Age" | column="age" | type="integer" | not-null="false" | length="11" | /> | </class> | </hibernate-mapping> | I used the auto-generated simple process, and added the following code to the MessageActionHandler.execute function: | stu = new Student(); | stu.setName("the hell"); | JbpmConfiguration cfg = JbpmConfiguration.getInstance(); | JbpmContext jbpmContext = cfg.createJbpmContext(); | try { | // Invoke persistence operations here | Session s = jbpmContext.getSession(); | s.save(stu); | } finally { | jbpmContext.close(); | } | the 'stu' is a member variable of MessageActionHandler. I first ran the sample SimpleProcessTest as JUnit test, and got 2 students named "the hell" in the table student ('cos the action was called twice in the test). Then I used JBoss IDE to deploy the process. The deployed archive includes the process, MessageActionHandler, the dgbdatamodel package, hibernate.cfg.xml as well as Student.hbm.xml. After logging in in the browser I started a new 'simple' process, after input 'color' and 'size' and clicked "Save and Close Task" (and the action handler is called), i got | javax.servlet.ServletException: Error calling action method of component with id taskform:transitionButton | ... | root cause | javax.faces.FacesException: Error calling action method of component with id taskform:transitionButton | ... | the log says sth like: | ... | 19:39:53,765 DEBUG [Services] closing service 'persistence': org.jbpm.persistence.db.DbPersistenceService@ec1e6f | 19:39:53,765 DEBUG [DbPersistenceService] committing hibernate transaction | 19:39:53,781 DEBUG [DbPersistenceService] closing hibernate session | 19:39:53,781 ERROR [GraphElement] action threw exception: Unknown entity: dgbdatamodel.Student | org.hibernate.MappingException: Unknown entity: dgbdatamodel.Student | at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:610) | at org.hibernate.impl.SessionImpl.getEntityPersister(SessionImpl.java:1246) | ... | I guess the deployed version didn't include the mapping declared in "Student.hbm.xml" (since if I don't call "s.save(stu)" in the action handler, no exception was thrown). I searched the forum for the answer, but in vain, the closest one I got is: http://www.jboss.com/index.html?module=bb&op=viewtopic&t=89365 However, I just started learning jBPM and got stuck in here for quite a few days. Anyone's kind enough to give me some clues? Or what is the right way to do the job? Thanks a million! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4059442#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...