Hello!
As a fresh Jboss user I came to a problem that is basic probably for most of you, but I cannot find a solution anywhere.
I am using jBPM-starters kit 3.1.4 and working in Eclipse with the JBoss plugin.
I try to create two processes, where one is nested in another as a subflow. The very simplified version of the problem is such:
Super-process:

<?xml version="1.0" encoding="UTF-8"?>

<process-definition
 xmlns="urn:jbpm.org:jpdl-3.1" name="Super">
 <start-state name="start">
 <transition name="" to="process1"></transition>
 </start-state>
 <process-state name="process1">
 <sub-process name="Sub" />
 <transition name="" to="end1"></transition>
 </process-state>
 <end-state name="end1"></end-state>
</process-definition>

Sub-process:

<?xml version="1.0" encoding="UTF-8"?>

<process-definition
 xmlns="urn:jbpm.org:jpdl-3.1" name="Sub">
 <start-state name="start">
 <transition name="" to="end1"></transition>
 </start-state>
 <end-state name="end1"></end-state>
</process-definition>

Then I try to run the super-process in a way suggested in this thread:
http://www.jboss.org/index.html?module=bb&op=viewtopic&t=93504

public class Test {

 public static void main(String[] args) {

 JbpmContext context = JbpmConfiguration.getInstance()
 .createJbpmContext();

 try {
 FileInputStream fis_super = new FileInputStream(
 "/path/Eclipse/workspace/SubflowTest/src/main/Super/processdefinition.xml");
 FileInputStream fis_sub = new FileInputStream(
 "/path/Eclipse/workspace/SubflowTest/src/main/Sub/processdefinition.xml");

 ProcessDefinition pdload_sub = ProcessDefinition
 .parseXmlInputStream(fis_sub);
 context.deployProcessDefinition(pdload_sub);

 ProcessDefinition pdload_super = ProcessDefinition
 .parseXmlInputStream(fis_super);
 context.deployProcessDefinition(pdload_super);

 GraphSession gs_caller = context.getGraphSession();

 // don't think I necessarily need to reload the process definitions
 // from the session but it doesn't make a difference
 ProcessDefinition pd_sub = gs_caller
 .findLatestProcessDefinition("Sub");
 ProcessDefinition pd_super = gs_caller
 .findLatestProcessDefinition("Super");

 ProcessInstance inst = new ProcessInstance(pd_super);

 // begin
 Token token = inst.getRootToken();
 ContextInstance contextInst = (ContextInstance) inst
 .getInstance(ContextInstance.class);

 System.out.println("getNode().getName(): "
 + token.getNode().getName());

 token.signal();
 System.out.println("getNode().getName(): "
 + token.getNode().getName());
 } catch (Exception e) {
 e.printStackTrace();
 } finally {
 context.close();
 }
 }
}

The result of the execution is the well known "table JBPM_PROCESSDEFINITION not found" error (exactly:

10:49:44,916 [main] DEBUG DbPersistenceService : beginning hibernate transaction
10:49:44,959 [main] WARN JDBCExceptionReporter : SQL Error: -22, SQLState: S0002
10:49:44,960 [main] ERROR JDBCExceptionReporter : Table not found in statement [select top ? processdef0_.ID_ as ID1_4_, processdef0_.NAME_ as NAME2_4_, processdef0_.VERSION_ as VERSION3_4_, processdef0_.ISTERMINATIONIMPLICIT_ as ISTERMIN4_4_, processdef0_.STARTSTATE_ as STARTSTATE5_4_ from JBPM_PROCESSDEFINITION processdef0_ where processdef0_.NAME_=? order by processdef0_.VERSION_ desc]
org.hibernate.exception.SQLGrammarException: could not execute query
 at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:65)
 at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
 at org.hibernate.loader.Loader.doList(Loader.java:2153)
(...)
Caused by: java.sql.SQLException: Table not found in statement [select top ? processdef0_.ID_ as ID1_4_, processdef0_.NAME_ as NAME2_4_, processdef0_.VERSION_ as VERSION3_4_, processdef0_.ISTERMINATIONIMPLICIT_ as ISTERMIN4_4_, processdef0_.STARTSTATE_ as STARTSTATE5_4_ from JBPM_PROCESSDEFINITION processdef0_ where processdef0_.NAME_=? order by processdef0_.VERSION_ desc]
 at org.hsqldb.jdbc.Util.throwError(Unknown Source)
 at org.hsqldb.jdbc.jdbcPreparedStatement.<init>(Unknown Source)
 at org.hsqldb.jdbc.jdbcConnection.prepareStatement(Unknown Source)
(...)
10:49:44,968 [main] ERROR GraphSession : org.hibernate.exception.SQLGrammarException: could not execute query
org.jbpm.JbpmException: couldn't find process definition 'Sub'
 at org.jbpm.db.GraphSession.findLatestProcessDefinition(GraphSession.java:157)
 at org.jbpm.db.GraphSession.deployProcessDefinition(GraphSession.java:67)
 at org.jbpm.JbpmContext.deployProcessDefinition(JbpmContext.java:173)
 at Test.main(Test.java:26)
Caused by: org.hibernate.exception.SQLGrammarException: could not execute query
 at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:65)
 at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
(...)
Caused by: java.sql.SQLException: Table not found in statement [select top ? processdef0_.ID_ as ID1_4_, processdef0_.NAME_ as NAME2_4_, processdef0_.VERSION_ as VERSION3_4_, processdef0_.ISTERMINATIONIMPLICIT_ as ISTERMIN4_4_, processdef0_.STARTSTATE_ as STARTSTATE5_4_ from JBPM_PROCESSDEFINITION processdef0_ where processdef0_.NAME_=? order by processdef0_.VERSION_ desc]
 at org.hsqldb.jdbc.Util.throwError(Unknown Source)
 at org.hsqldb.jdbc.jdbcPreparedStatement.<init>(Unknown Source)
 at org.hsqldb.jdbc.jdbcConnection.prepareStatement(Unknown Source)
(...)

(I trimmed the log)
So one thing I understood from what I read in the forum and in the Internet - i have to set up the Hibernate database and create a table JBPM_PROCESSDEFINITION. But I couldn't find a hint on how to to it. Can it be done programatticaly? Or how should I do it in any other way (preferably nice and easy :P)?