Seam 2 + MySQL 5 + jBPM 3

Seam (jboss-seam-2.1.2) could not start jBPM (jbpm-3.2.6.SP1) causes application deployment fails

02:08:48,718 ERROR [jbpm]] Exception sending context initialized event to listener instance of class org.jboss.seam.servlet.SeamListener
org.jboss.seam.InstantiationException: Could not instantiate Seam component: org.jboss.seam.bpm.jbpm

Caused by: org.hibernate.PropertyAccessException: could not get a field value by reflection getter of org.jbpm.job.Job.id

jboss-seam-2.1.2 comes with an older version of jbpm-jpdl.jar. Copy the newer one from jbpm-3.2.6.SP1 to replace the one in seam.

Seam (jboss-seam-2.1.2) example Hotel Booking, it causes exceptions during undeployment during JBoss shutdown

17:35:36,421 WARN  [Component] Exception calling stateful session bean default @Remove method: hotelBooking
org.jboss.ejb3.common.registrar.spi.NotBoundException: Requested value bound at name "jboss.j2ee:ear=seam.example.hotel-ear.ear,jar=seam.example.hotel-ejb.jar,name=HotelBookingAction,service=EJB3" is not bound.

17:35:36,437 WARN  [Component] Exception calling stateful session bean default @Remove method: bookingList
org.jboss.ejb3.common.registrar.spi.NotBoundException: Requested value bound at name "jboss.j2ee:ear=seam.example.hotel-ear.ear,jar=seam.example.hotel-ejb.jar,name=BookingListAction,service=EJB3" is not bound.

17:35:36,437 WARN  [Component] Exception calling stateful session bean default @Remove method: hotelSearch
org.jboss.ejb3.common.registrar.spi.NotBoundException: Requested value bound at name "jboss.j2ee:ear=seam.example.hotel-ear.ear,jar=seam.example.hotel-ejb.jar,name=HotelSearchingAction,service=EJB3" is not bound.

Only the Stateful session beans like hotelSearch cause the exception. Inside the example there are jboss.xml which contains session bean registrations. Places this file to seam.example.hotel-ear\EarContent\META-INF.

Seam (jboss-seam-2.1.2) jBPM file for page flow could not be parsed

Caused by: org.jbpm.jpdl.JpdlException: [[ERROR] Unable to parse process definition pageflow.jpdl.xml]
 at org.jboss.seam.bpm.Jbpm.getPageflowDefinitionFromResource(Jbpm.java:169)
 at org.jboss.seam.bpm.Jbpm.installPageflowDefinitions(Jbpm.java:278)

Check if the process definition contains any sub process. If it does, in components.xml, all sub processes MUST be defined before the main process. For example: if cheat.jpdl.xml is a sub process of pageflow.jpd.xml, the follow one will cause the trouble

    pageflow.jpdl.xml
    cheat.jpdl.xml

And this one is correct.

    cheat.jpdl.xml
    pageflow.jpdl.xml

Eclipse + Seam + TestNG Tricky

TestNG gives "Connection Refused" while running on Eclipse

org.testng.TestNGException:
Cannot establish connection: 127.0.0.1:4359
at org.testng.remote.strprotocol.StringMessageSenderHelper.connect(StringMessageSenderHelper.java:93)
at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:57)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:124)
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(Unknown Source)
at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at org.testng.remote.strprotocol.StringMessageSenderHelper.connect(StringMessageSenderHelper.java:56)
... 2 more

While running TestNG in Eclipse there will always be 2 VMs involved: the VM of Eclipse and the VM running the tests. In order to update the plugin UI the 2 VMs are communicating over a port using a very simple string based protocol. The exception you are seeing is telling that the 2 VMs are not able to talk to each other. This is a weird exception that would translate into: there was impossible to open a communication port between the 2 VMs involved. Off hand, the cause may be: a bug in Eclipse/plugin or maybe a firewall/antivirus that blocks this.

TestNG/Seam reports ClassNotFoundException issues

[Parser] Running:
 D:\showman\My Documents\workspace_3.5\seam.examples.helloworld-test\temp-testng-customsuite.xml

ERROR [org.jboss.kernel.plugins.dependency.AbstractKernelController] Error installing to Described: name=BeanDeployer state=PreInstall

ERROR [org.jboss.kernel.plugins.dependency.AbstractKernelController] Error installing to Described: name=ServiceDeployer state=PreInstall
java.lang.RuntimeException: java.lang.reflect.UndeclaredThrowableException

Caused by: java.lang.ClassNotFoundException: [Ljava.lang.Class;
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)

ERROR [org.jboss.kernel.plugins.dependency.AbstractKernelController] Error installing to Start: name=UserTransaction state=Create
java.lang.RuntimeException: Unable to locate the transaction manager

FAILED CONFIGURATION: @BeforeSuite startSeam
org.jboss.deployers.client.spi.IncompleteDeploymentException: Summary of incomplete deployments (SEE PREVIOUS ERRORS FOR DETAILS):

*** CONTEXTS MISSING DEPENDENCIES: Name -> Dependency{Required State:Actual State}

UserTransactionBinding
-> UserTransaction{Configured:**ERROR**}

UserTransactionBinding2
-> UserTransaction{Configured:**ERROR**}


*** CONTEXTS IN ERROR: Name -> Error

SARDeployer -> java.lang.ClassNotFoundException: [Ljava.lang.Class;

ServiceDeploymentDeployer -> java.lang.ClassNotFoundException: [Ljava.lang.Class;

ServiceClassLoaderDeployer -> java.lang.ClassNotFoundException: [Ljava.lang.Class;

BeanDeployer -> java.lang.ClassNotFoundException: [Ljava.lang.Class;

ServiceDeployer -> java.lang.ClassNotFoundException: [Ljava.lang.Class;

BeanMetaDataDeployer -> java.lang.ClassNotFoundException: [Ljava.lang.Class;

UserTransaction -> java.lang.RuntimeException: Unable to locate the transaction manager

KernelDeploymentDeployer -> java.lang.ClassNotFoundException: [Ljava.lang.Class;

This is mostly caused by Class Path configuration, also, Java 6 may be the cause, use Java 5!!

Could not find several required files

ERROR [org.jboss.kernel.plugins.dependency.AbstractKernelController] Error installing to Parse: name=vfsfile:/D:/showman/My%20Documents/workspace_3.5/seam.examples.helloworld-test/bootstrap/deploy/jboss-local-jdbc.rar state=Not Installed mode=Manual requiredState=Parse
org.jboss.deployers.spi.DeploymentException: Error parsing meta data jboss-local-jdbc.rar/META-INF/ra.xml

Caused by: java.io.FileNotFoundException: File does not exist: D:\showman\My%20Documents

It seems that it does not like space in the path T_T, try to set the workspace to somewhere with NO space!! FUCK!

When running test case in Eclipse, TestNG complains bad version in .class file even Java 5 is used

java.lang.UnsupportedClassVersionError: Bad version number in .class file

Make sure everything is Java 5 compliant, such as:

• Project build path
• JAVA_HOME, JRE_HOME
• Java's in PATH (check by java -version)
• The Application Server (i.e. must be JDK5 compiled JBoss AS 5)

JBoss jBPM Info Center

jBPM 4.0

jBPM User Guide (jBPM 4.0)

jBPM Developers Guide (jBPM 4.0)

jBPM Wiki

Getting Started with jBPM 4.0 - (Part I)

Getting Started with jBPM 4.0 - (Part II)

Getting Started with jBPM 4.0 - (Part III)

Getting Started with jBPM 4.0 - (Part IV)

jBPM 3.X

jBPM3 Getting Started

jBPM deployment in production environments

FAQ

When running jBPM (3.2.6.SP1) within Seam (2.1.2), the process does not run in persistent state. For example: all process instances are lost after JBoss AS restarts

In jBPM side, hibernate.cfg.xml takes the main responsibility for jBPM's persistent properties. Make sure all settings are configured properly especially:

<property name="hibernate.connection.datasource">java:JbpmDS</property>

When trying jBPM's websale example, exception occurs when clicking evaluation button

Unabled to enlist resource, see the previous warnings. tx=TransactionImple < ac, BasicAction: -3f57fffd:daa:4a702b15:1fe status: ActionStatus.ABORT_ONLY >

Could not enlist in transaction on entering meta-aware object!;

Unable to persist timer

XA data sources and jBPM

When trying jBPM's websale example (jbpm-3.2.6.SP1), AFTER clicking evaluation button and complete the task successfully, manager's task with timer causes exceptions

java.lang.UnsupportedClassVersionError: Bad version number in .class file
java.lang.ClassLoader.defineClass1(Native Method)
java.lang.ClassLoader.defineClass(ClassLoader.java:620) 

jBPM distribution maybe compiled by Java 6, use JDK6 compiled JBoss AS 5 and set JAVA_HOME and JRE_HOME to JDK6.