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3 Replies Latest reply on Apr 13, 2010 10:03 PM by rebody

org.jbpm.api.JbpmException: couldn't instantiate hibernate configuration class org.hibernate.cfg.Configuration

chaitanya_d6 Apr 12, 2010 8:38 PM

Hello ,

I am new to jBPM . I installed jBPM 4.3 on Jboss 5.1 after making required changes in the build.xml within the install Folder. I deploy the sample examples into JBOSS and then try to run one of them as JUNIT test. However I receive this error :

## EXCEPTION ###########################################

17:24:56,456 INF | [DefaultCommandService] exception while executing command org.jbpm.pvm.internal.cmd.CheckDbCmd@fd68b1

org.jbpm.api.JbpmException: couldn't instantiate hibernate configuration class org.hibernate.cfg.Configuration

at org.jbpm.pvm.internal.wire.descriptor.HibernateConfigurationDescriptor.construct(HibernateConfigurationDescriptor.java:64)

at org.jbpm.pvm.internal.wire.WireContext.construct(WireContext.java:469)

at org.jbpm.pvm.internal.wire.WireContext.create(WireContext.java:448)

at org.jbpm.pvm.internal.wire.WireContext.create(WireContext.java:437)

at org.jbpm.pvm.internal.wire.WireContext.get(WireContext.java:417)

at org.jbpm.pvm.internal.wire.WireContext.get(WireContext.java:327)

at org.jbpm.pvm.internal.wire.WireContext.get(WireContext.java:688)

at org.jbpm.pvm.internal.wire.descriptor.HibernateSessionFactoryDescriptor.construct(HibernateSessionFactoryDescriptor.java:57)

at org.jbpm.pvm.internal.wire.WireContext.construct(WireContext.java:469)

at org.jbpm.pvm.internal.wire.WireContext.create(WireContext.java:448)

at org.jbpm.pvm.internal.wire.WireContext.create(WireContext.java:437)

at org.jbpm.pvm.internal.wire.WireContext.get(WireContext.java:417)

at org.jbpm.pvm.internal.wire.WireContext.get(WireContext.java:327)

at org.jbpm.pvm.internal.wire.WireContext.get(WireContext.java:688)

at org.jbpm.pvm.internal.env.BasicEnvironment.get(BasicEnvironment.java:139)

at org.jbpm.pvm.internal.env.BasicEnvironment.get(BasicEnvironment.java:130)

at org.jbpm.pvm.internal.wire.descriptor.HibernateSessionDescriptor.construct(HibernateSessionDescriptor.java:63)

at org.jbpm.pvm.internal.wire.WireContext.construct(WireContext.java:469)

at org.jbpm.pvm.internal.wire.WireContext.create(WireContext.java:448)

at org.jbpm.pvm.internal.wire.WireContext.create(WireContext.java:437)

at org.jbpm.pvm.internal.wire.WireContext.get(WireContext.java:417)

at org.jbpm.pvm.internal.wire.WireContext.get(WireContext.java:327)

at org.jbpm.pvm.internal.wire.WireContext.get(WireContext.java:688)

at org.jbpm.pvm.internal.env.BasicEnvironment.get(BasicEnvironment.java:139)

at org.jbpm.pvm.internal.env.BasicEnvironment.get(BasicEnvironment.java:130)

at org.jbpm.pvm.internal.env.EnvironmentImpl.getFromCurrent(EnvironmentImpl.java:201)

at org.jbpm.pvm.internal.env.EnvironmentImpl.getFromCurrent(EnvironmentImpl.java:190)

at org.jbpm.pvm.internal.cmd.CheckDbCmd.execute(CheckDbCmd.java:44)

at org.jbpm.pvm.internal.svc.DefaultCommandService.execute(DefaultCommandService.java:42)

at org.jbpm.pvm.internal.tx.StandardTransactionInterceptor.execute(StandardTransactionInterceptor.java:54)

at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.executeInNewEnvironment(EnvironmentInterceptor.java:53)

at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.execute(EnvironmentInterceptor.java:40)

at org.jbpm.pvm.internal.svc.RetryInterceptor.execute(RetryInterceptor.java:55)

at org.jbpm.pvm.internal.svc.SkipInterceptor.execute(SkipInterceptor.java:43)

at org.jbpm.pvm.internal.processengine.ProcessEngineImpl.checkDb(ProcessEngineImpl.java:152)

at org.jbpm.pvm.internal.processengine.ProcessEngineImpl.<init>(ProcessEngineImpl.java:105)

at org.jbpm.pvm.internal.cfg.ConfigurationImpl.buildProcessEngine(ConfigurationImpl.java:94)

at org.jbpm.api.Configuration.getProcessEngine(Configuration.java:121)

at org.jbpm.test.JbpmTestCase.initialize(JbpmTestCase.java:83)

at org.jbpm.test.JbpmTestCase.setUp(JbpmTestCase.java:78)

at org.jbpm.examples.async.activity.AsyncActivityTest.setUp(AsyncActivityTest.java:38)

at junit.framework.TestCase.runBare(TestCase.java:128)

at junit.framework.TestResult$1.protect(TestResult.java:106)

at junit.framework.TestResult.runProtected(TestResult.java:124)

at junit.framework.TestResult.run(TestResult.java:109)

at junit.framework.TestCase.run(TestCase.java:120)

at junit.framework.TestSuite.runTest(TestSuite.java:230)

at junit.framework.TestSuite.run(TestSuite.java:225)

at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)

at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

Caused by: org.jbpm.api.JbpmException: couldn't construct new 'org.hibernate.cfg.Configuration' with args null

at org.jbpm.pvm.internal.util.ReflectUtil.newInstance(ReflectUtil.java:117)

at org.jbpm.pvm.internal.util.ReflectUtil.newInstance(ReflectUtil.java:88)

at org.jbpm.pvm.internal.wire.descriptor.HibernateConfigurationDescriptor.construct(HibernateConfigurationDescriptor.java:62)

... 53 more

Caused by: java.lang.reflect.InvocationTargetException

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)

at java.lang.reflect.Constructor.newInstance(Constructor.java:513)

at org.jbpm.pvm.internal.util.ReflectUtil.newInstance(ReflectUtil.java:114)

... 55 more

Caused by: java.lang.ExceptionInInitializerError

at org.hibernate.cfg.Configuration.reset(Configuration.java:201)

at org.hibernate.cfg.Configuration.<init>(Configuration.java:220)

at org.hibernate.cfg.Configuration.<init>(Configuration.java:224)

... 60 more

Caused by: java.lang.NullPointerException

at org.hibernate.util.ConfigHelper.getResourceAsStream(ConfigHelper.java:167)

at org.hibernate.cfg.Environment.<clinit>(Environment.java:558)

... 63 more

### EXCEPTION ###########################################

Can any one help me in understanding and solving this exception ?

-Regards,

Chaitanya Desai

1. Re: org.jbpm.api.JbpmException: couldn't instantiate hibernate configuration class org.hibernate.cfg.Configuration

rebody Apr 13, 2010 1:44 AM (in response to chaitanya_d6)

Hi Chaitanya,
Did you put the jbpm.hibernate.cfg.xml into your classpath? If you don't know how to configure this file, you could have a look at the example project, the example project is included in the jBPM distribution.
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2. Re: org.jbpm.api.JbpmException: couldn't instantiate hibernate configuration class org.hibernate.cfg.Configuration

chaitanya_d6 Apr 13, 2010 8:49 PM (in response to rebody)

Hi,
Thanks for the reply. I am trying one of the sample codes from the examples provided within the jboss distribution and while running the examples it is giving me the error. The build.xml within the examples folder includes the jbpm.hibernate.cfg.xml in the classpath when I deploy my examples using build.xml i guess. I did not make any explicit changes into build.xml myself. However I included the required jars as specified in the user guide for jbpm 4.3 apart from changing the jboss version to 5.1.

I dont understand why is it unable to read hibernate.cfg.configuration class?
Still not working.
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3. Re: org.jbpm.api.JbpmException: couldn't instantiate hibernate configuration class org.hibernate.cfg.Configuration

rebody Apr 13, 2010 10:03 PM (in response to chaitanya_d6)

Hi chaitanya,
I have no idea about why jBPM couldn't read jbpm.hibernate.cfg.xml. I would suggest you try the jBoss-5.0.0.GA to install jBPM, at least this is the default configuation in jBPM distribution.
cheers.
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