[JBoss jBPM] - Re: TaskInstance.setActorId(String) causes set TaskInstance
by Octomac
I managed to find the problem, so I thought I'd come back here and post it just in case this helps anyone else.
The default JBPM database configuration uses the type "BIT" for boolean columns. BIT doesn't map exactly correctly to Java's "true" and "false," or even 1 and 0. As a result, no matter what data I placed into the database, JBPM and Hibernate would interpret it as "true." So, whenever I called, say, TaskInstance.setActorId("Name"), the Hibernate query was inserting correct data to the database, but that data was being interpreted as a BIT value.
To correct the problem, I manually changed each BIT column to a TINYINT(1) type. This ensured that the data Hibernate was passing into my database was interpreted correctly, and as a result, I am now able to handle assignment and creation of tasks correctly.
If anyone else experiences the same problem that I did, hopefully this will help. Thanks again to the JBoss Forum members who assisted me in this matter!
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18 years, 1 month
[JBoss jBPM] - MySQL backend
by RichardC
Hello:
I followed the steps outlined in the following wiki documents for changing the backend to use the MySQL database:
http://wiki.jboss.org/wiki/SetUpMysqlAsDefaultDS
http://wiki.jboss.org/wiki/SetUpAMysqlDatasource
I then added some users, groups, and memberships based on the script I stole from here:
http://blogs.dfwikilabs.org/pigui/files/2007/11/mysqlidentityscriptjbpm32...
After restarting the server, I can log into the jbpm-console with a username & password added to the MySQL database. I am also able to add new groups and users through the jbpm-console. However, I am no longer able to deploy process definitions through the jbpm-console or the gpd.
Looking at the server log, I see the following:
| 2008-06-20 13:36:03,397 DEBUG [org.hibernate.transaction.JDBCTransaction] begin
| 2008-06-20 13:36:03,397 DEBUG [org.hibernate.jdbc.ConnectionManager] opening JDBC connection
| 2008-06-20 13:36:03,397 DEBUG [org.hibernate.transaction.JDBCTransaction] current autocommit status: true
| 2008-06-20 13:36:03,397 DEBUG [org.hibernate.transaction.JDBCTransaction] disabling autocommit
| 2008-06-20 13:36:03,397 DEBUG [org.jbpm.persistence.db.DbPersistenceService] begun hibernate transaction org.hibernate.transaction.JDBCTransaction@69bdf8
| 2008-06-20 13:36:03,397 DEBUG [org.hibernate.jdbc.AbstractBatcher] about to open PreparedStatement (open PreparedStatements: 0, globally: 0)
| 2008-06-20 13:36:03,397 DEBUG [org.hibernate.SQL] select top ? processdef0_.ID_ as ID1_4_, processdef0_.NAME_ as NAME3_4_, processdef0_.DESCRIPTION_ as DESCRIPT4_4_, processdef0_.VERSION_ as VERSION5_4_, processdef0_.ISTERMINATIONIMPLICIT_ as ISTERMIN6_4_, processdef0_.STARTSTATE_ as STARTSTATE7_4_ from JBPM_PROCESSDEFINITION processdef0_ where processdef0_.NAME_=? order by processdef0_.VERSION_ desc
| 2008-06-20 13:36:03,397 DEBUG [org.hibernate.loader.hql.QueryLoader] bindNamedParameters() prototypeone -> name [2]
| 2008-06-20 13:36:03,397 DEBUG [org.hibernate.jdbc.AbstractBatcher] about to close PreparedStatement (open PreparedStatements: 1, globally: 1)
| 2008-06-20 13:36:03,397 DEBUG [org.hibernate.util.JDBCExceptionReporter] could not execute query [select processdef0_.ID_ as ID1_4_, processdef0_.NAME_ as NAME3_4_, processdef0_.DESCRIPTION_ as DESCRIPT4_4_, processdef0_.VERSION_ as VERSION5_4_, processdef0_.ISTERMINATIONIMPLICIT_ as ISTERMIN6_4_, processdef0_.STARTSTATE_ as STARTSTATE7_4_ from JBPM_PROCESSDEFINITION processdef0_ where processdef0_.NAME_=? order by processdef0_.VERSION_ desc]
| com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '1 processdef0_.ID_ as ID1_4_, processdef0_.NAME_ as NAME3_4_, processdef0_.DESCR' at line 1
|
>From the looks of it, it may be executing an sql statement that is invalid in MySQL as "SELECT TOP ? col1, col2 FROM tablename WHERE col1 = 'value2'" is invalid in MySQL where as the MySQL equivalent should be "SELECT col1, col2 FROM tablename WHERE col1 = 'value2' LIMIT ?".
I also notice during startup of the JBoss AS, i see the following log info:
| 13:58:20,085 ERROR [URLDeploymentScanner] Incomplete Deployment listing:
|
| --- MBeans waiting for other MBeans ---
| ObjectName: jboss.ejb:service=EJBTimerService,persistencePolicy=database
| State: CONFIGURED
| I Depend On:
| jboss.jca:service=DataSourceBinding,name=DefaultDS
|
| ObjectName: jboss.mq:service=InvocationLayer,type=HTTP
| State: CONFIGURED
| I Depend On:
| jboss.mq:service=Invoker
| jboss.web:service=WebServer
|
| <more like above and below cut out for brevity>
|
| ObjectName: jboss.mq:service=PersistenceManager
| State: CONFIGURED
| I Depend On:
| jboss.jca:service=DataSourceBinding,name=DefaultDS
| Depends On Me:
| jboss.mq:service=DestinationManager
|
| ObjectName: jboss.mq:service=InvocationLayer,type=UIL2
| State: CONFIGURED
| I Depend On:
| jboss.mq:service=Invoker
|
| --- MBEANS THAT ARE THE ROOT CAUSE OF THE PROBLEM ---
| ObjectName: jboss.jca:service=DataSourceBinding,name=DefaultDS
| State: NOTYETINSTALLED
| Depends On Me:
| jboss.ejb:service=EJBTimerService,persistencePolicy=database
| jboss:service=KeyGeneratorFactory,type=HiLo
| jboss.mq:service=StateManager
| jboss.mq:service=PersistenceManager
|
If someone out there could provide ideas on why the mbean is not being installed/configured that would be much appreciated. Thank you for your time.
Regards,
Richard
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18 years, 1 month