Apr 04
After deploying a new process I sure that you would like to run it 
It’s easy. First of all, you must create a new process instance:
jbpmContext = jbpmConfiguration.createJbpmContext();
processInstance = jbpmContext.newProcessInstance("processname");
Then you can initialize it by adding some variables to the process:
contextInstance = processInstance.getContextInstance();
contextInstance.setVariable("var", myVar);
To start it you have to send a signal to the process first token :
processInstance.getRootToken().signal();
May 4th, 2008 at 11:37 pm
Why are you learning jBPM? Are you involved in some university project or it’s just for fun?
And a final question: is P for Process or for Performance?
May 5th, 2008 at 8:34 am
It sounds like a SIO question…
May 21st, 2008 at 10:56 pm
Useful post, I spent many days trying to find it out, but at last I get it (looking some examples and of course reading the -boring- JBpm doc).
Now I am trying to start a process instance with Web Services from a remote client (a nagios server that could start a work-flow when an alarm is detected), but I realized that it is kind of complicated, because the few examples that I found on the Internet are oriented to start a process instance from a node of the JBpm and not from a remote client.
I will really apreciatte if maybe you know how to solve this problem or maybe you could give me some tips to accomplish this task.
Thanks
Christian
May 21st, 2008 at 11:05 pm
One last question:
How can you initialize the object “jbpmConfiguration” if you don’t have an ExecutionContext:
JbpmConfiguration jbpmConfiguration=???
jbpmContext = jbpmConfiguration.createJbpmContext();
May 22nd, 2008 at 7:53 am
Hi Christian,
I never tried to start a process using WS but I suppose it doesn’t matter. Once at server start it normally.
To init the JbpmConfiguration you need to read the xml config file. jBPM API encapsulates this operation at parseResourse function. You only need to do the following :
JbpmConfiguration jbpmConfiguration = JbpmConfiguration.parseResource(”/config/jbpm.cfg.xml”); // or wherever is your jbpm.cfg.xml file
I hope it helps you.
June 3rd, 2008 at 3:43 pm
Thanks pigui, I’ll take in count your suggestions.
June 27th, 2008 at 9:56 am
Hi.
I tred to start process using java class.But coudnt.here is my code and error has been occured:
public class uzak {
/**
* @param args
*/
JbpmConfiguration jbpmConfiguration = null;
//JbpmConfiguration.getInstance();
public static void startProcessDefinition() {
String processDefinitionName = new String(”websale”);
JbpmConfiguration jbpmConfiguration =JbpmConfiguration.parseResource(”jbpm.cfg.xml”);
JbpmContext jbpmContext = jbpmConfiguration.createJbpmContext();
try {
GraphSession graphSession = jbpmContext.getGraphSession();
ProcessDefinition definition = graphSession.findLatestProcessDefinition(processDefinitionName);
System.out.println(graphSession.getProcessDefinition(2));
ProcessInstance instance = definition.createProcessInstance();
instance.signal();
jbpmContext.save(instance);
} finally {
jbpmContext.close();
}
}
public static void main(String[] args) {
uzak.startProcessDefinition();
}
}
here is error
Table not found in statement [select top ? processdef0_.ID_ as ID1_0_, processdef0_.NAME_ as NAME3_0_, processdef0_.DESCRIPTION_ as DESCRIPT4_0_, processdef0_.VERSION_ as VERSION5_0_, processdef0_.ISTERMINATIONIMPLICIT_ as ISTERMIN6_0_, processdef0_.STARTSTATE_ as STARTSTATE7_0_ 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:67)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
at org.hibernate.loader.Loader.doList(Loader.java:2223)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104)
at org.hibernate.loader.Loader.list(Loader.java:2099)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:378)
at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:338)
at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
at org.hibernate.impl.AbstractQueryImpl.uniqueResult(AbstractQueryImpl.java:811)
at org.jbpm.db.GraphSession.findLatestProcessDefinition(GraphSession.java:153)
at uzak.startProcessDefinition(uzak.java:43)
at uzak.main(uzak.java:55)
Caused by: java.sql.SQLException: Table not found in statement [select top ? processdef0_.ID_ as ID1_0_, processdef0_.NAME_ as NAME3_0_, processdef0_.DESCRIPTION_ as DESCRIPT4_0_, processdef0_.VERSION_ as VERSION5_0_, processdef0_.ISTERMINATIONIMPLICIT_ as ISTERMIN6_0_, processdef0_.STARTSTATE_ as STARTSTATE7_0_ 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.(Unknown Source)
at org.hsqldb.jdbc.jdbcConnection.prepareStatement(Unknown Source)
at org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:505)
at org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:423)
at org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:139)
at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1547)
at org.hibernate.loader.Loader.doQuery(Loader.java:673)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
at org.hibernate.loader.Loader.doList(Loader.java:2220)
… 11 more
11:45:00,774 [main] ERROR GraphSession : org.hibernate.exception.SQLGrammarException: could not execute query
11:45:00,774 [main] DEBUG JbpmContext : closing JbpmContext
11:45:00,774 [main] DEBUG Services : closing service ‘persistence’: org.jbpm.persistence.db.DbPersistenceService@11a0d35
Exception in thread “main” org.jbpm.JbpmException: couldn’t find process definition ‘websale’
at org.jbpm.db.GraphSession.findLatestProcessDefinition(GraphSession.java:170)
at uzak.startProcessDefinition(uzak.java:43)
at uzak.main(uzak.java:55)
Caused by: org.hibernate.exception.SQLGrammarException: could not execute query
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:67)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
at org.hibernate.loader.Loader.doList(Loader.java:2223)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104)
at org.hibernate.loader.Loader.list(Loader.java:2099)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:378)
at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:338)
at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
at org.hibernate.impl.AbstractQueryImpl.uniqueResult(AbstractQueryImpl.java:811)
at org.jbpm.db.GraphSession.findLatestProcessDefinition(GraphSession.java:153)
… 2 more
Caused by: java.sql.SQLException: Table not found in statement [select top ? processdef0_.ID_ as ID1_0_, processdef0_.NAME_ as NAME3_0_, processdef0_.DESCRIPTION_ as DESCRIPT4_0_, processdef0_.VERSION_ as VERSION5_0_, processdef0_.ISTERMINATIONIMPLICIT_ as ISTERMIN6_0_, processdef0_.STARTSTATE_ as STARTSTATE7_0_ 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.(Unknown Source)
at org.hsqldb.jdbc.jdbcConnection.prepareStatement(Unknown Source)
at org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:505)
at org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:423)
at org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:139)
at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1547)
at org.hibernate.loader.Loader.doQuery(Loader.java:673)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
at org.hibernate.loader.Loader.doList(Loader.java:2220)
… 11 more
11:45:00,774 [main] DEBUG DbPersistenceService : committing hibernate transaction org.hibernate.transaction.JDBCTransaction@3aef16
11:45:00,774 [main] DEBUG DbPersistenceService : closing hibernate session
11:45:00,774 [main] DEBUG Services : closing service ‘tx’: org.jbpm.tx.TxService@12c4c57
June 27th, 2008 at 11:29 am
@btl_ayd
* Did you created jbpm tables into your database?
http://blogs.dfwikilabs.org/pigui/2007/11/23/installing-jboss-jbpm-332-on-apache-tomcat-55-and-mysql/
* Did you deployed the process definition?
http://blogs.dfwikilabs.org/pigui/2008/03/17/deploying-jbpm-processes/