[jboss-user] [EJB 3.0] - org.hibernate.MappingException: could not instantiate id gen

matt10 do-not-reply at jboss.com
Tue Oct 16 06:30:12 EDT 2007


I have to access a legacy application. I have read-only access to it's database (Sybase ASE 12.5).

I want to access some of it's tables through Entity Beans in a transparent fashion from a session bean facade (Hibernate Shards style, where a lower ID range goes transparently to the legacy DB). I've created a secondary PersistenceUnit for the Sybase database.

There is currently one @Entity declared on this persistence unit. I don't use any generated values or sequences. The entities are mutable.

On deployment I get an exception and this persistence unit fails to initialize.

11:06:08,712 WARN  [ServiceController] Problem starting service persistence.units:ear=Debtbase.ear,jar=DebtbaseEJB.jar,unitName=debtrecovery
  | javax.persistence.PersistenceException: org.hibernate.MappingException: could not instantiate id generator
  | Caused by: org.hibernate.MappingException: Dialect does not support sequences
  | 

Having looked at the JBoss EJB3 code following the stack trace, the SessionFactoryImpl constructor takes in a default ID generator setting from somewhere and creates and initializes a SequenceHiLoGenerator.

This generator fails with an exception on a database that does not support sequences.

I want to prevent the creation of this ID generator (or create another generator that does not rely on sequences).

I don't want or need an ID generator. The entities are mutable.

I can't find a configuration setting or fix that will do this. (I've tried the latest 5.0.0 Beta2 AS and explicitly specifying other (passive) types of ID generator on the @Entity bean, this hasn't worked).


Can anyone help please?


Full stack trace:


  | javax.persistence.PersistenceException: org.hibernate.MappingException: could not instantiate id generator
  |         at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:720)
  |         at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:127)
  |         at org.jboss.ejb3.entity.PersistenceUnitDeployment.start(PersistenceUnitDeployment.java:246)
  |         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  |         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  |         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  |         at java.lang.reflect.Method.invoke(Method.java:597)
  |         at org.jboss.ejb3.ServiceDelegateWrapper.startService(ServiceDelegateWrapper.java:103)
  |         at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
  |         at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
  |         at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
  |         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  |         at java.lang.reflect.Method.invoke(Method.java:597)
  |         at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
  |         at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
  |         at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
  |         at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  |         at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  |         at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978)
  |         at $Proxy0.start(Unknown Source)
  |         at org.jboss.system.ServiceController.start(ServiceController.java:417)
  |         at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source)
  |         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  |         at java.lang.reflect.Method.invoke(Method.java:597)
  |         at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
  |         at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
  |         at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
  |         at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  |         at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  |         at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
  |         at $Proxy56.start(Unknown Source)
  |         at org.jboss.ejb3.JmxKernelAbstraction.install(JmxKernelAbstraction.java:120)
  |         at org.jboss.ejb3.Ejb3Deployment.startPersistenceUnits(Ejb3Deployment.java:627)
  |         at org.jboss.ejb3.Ejb3Deployment.start(Ejb3Deployment.java:351)
  |         at org.jboss.ejb3.Ejb3Module.startService(Ejb3Module.java:91)
  |         at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
  |         at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
  |         at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
  |         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  |         at java.lang.reflect.Method.invoke(Method.java:597)
  |         at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
  |         at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
  |         at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
  |         at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  |         at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  |         at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978)
  |         at $Proxy0.start(Unknown Source)
  |         at org.jboss.system.ServiceController.start(ServiceController.java:417)
  |         at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source)
  |         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  |         at java.lang.reflect.Method.invoke(Method.java:597)
  |         at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
  |         at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
  |         at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
  |         at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  |         at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  |         at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
  |         at $Proxy32.start(Unknown Source)
  |         at org.jboss.ejb3.EJB3Deployer.start(EJB3Deployer.java:512)
  |         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  |         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  |         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  |         at java.lang.reflect.Method.invoke(Method.java:597)
  |         at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
  |         at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
  |         at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
  |         at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
  |         at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
  |         at org.jboss.mx.interceptor.DynamicInterceptor.invoke(DynamicInterceptor.java:97)
  |         at org.jboss.system.InterceptorServiceMBeanSupport.invokeNext(InterceptorServiceMBeanSupport.java:238)
  |         at org.jboss.ws.integration.jboss42.DeployerInterceptor.start(DeployerInterceptor.java:93)
  |         at org.jboss.deployment.SubDeployerInterceptorSupport$XMBeanInterceptor.start(SubDeployerInterceptorSupport.java:188)
  |         at org.jboss.deployment.SubDeployerInterceptor.invoke(SubDeployerInterceptor.java:95)
  |         at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
  |         at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  |         at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  |         at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
  |         at $Proxy33.start(Unknown Source)
  |         at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1025)
  |         at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1015)
  |         at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:819)
  |         at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782)
  |         at sun.reflect.GeneratedMethodAccessor19.invoke(Unknown Source)
  |         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  |         at java.lang.reflect.Method.invoke(Method.java:597)
  |         at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
  |         at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
  |         at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
  |         at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
  |         at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
  |         at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
  |         at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  |         at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  |         at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
  |         at $Proxy9.deploy(Unknown Source)
  |         at org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:421)
  |         at org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:634)
  |         at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:263)
  |         at org.jboss.deployment.scanner.AbstractDeploymentScanner.startService(AbstractDeploymentScanner.java:336)
  |         at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
  |         at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
  |         at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
  |         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  |         at java.lang.reflect.Method.invoke(Method.java:597)
  |         at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
  |         at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
  |         at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
  |         at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  |         at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  |         at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978)
  |         at $Proxy0.start(Unknown Source)
  |         at org.jboss.system.ServiceController.start(ServiceController.java:417)
  |         at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source)
  |         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  |         at java.lang.reflect.Method.invoke(Method.java:597)
  |         at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
  |         at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
  |         at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
  |         at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  |         at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  |         at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
  |         at $Proxy4.start(Unknown Source)
  |         at org.jboss.deployment.SARDeployer.start(SARDeployer.java:302)
  |         at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1025)
  |         at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:819)
  |         at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782)
  |         at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:766)
  |         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  |         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  |         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  |         at java.lang.reflect.Method.invoke(Method.java:597)
  |         at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
  |         at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
  |         at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
  |         at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
  |         at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
  |         at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
  |         at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  |         at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  |         at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
  |         at $Proxy5.deploy(Unknown Source)
  |         at org.jboss.system.server.ServerImpl.doStart(ServerImpl.java:482)
  |         at org.jboss.system.server.ServerImpl.start(ServerImpl.java:362)
  |         at org.jboss.Main.boot(Main.java:200)
  |         at org.jboss.Main$1.run(Main.java:508)
  |         at java.lang.Thread.run(Thread.java:619)
  | Caused by: org.hibernate.MappingException: could not instantiate id generator
  |         at org.hibernate.id.IdentifierGeneratorFactory.create(IdentifierGeneratorFactory.java:98)
  |         at org.hibernate.mapping.SimpleValue.createIdentifierGenerator(SimpleValue.java:152)
  |         at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:192)
  |         at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1294)
  |         at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:713)
  |         ... 145 more
  | Caused by: org.hibernate.MappingException: Dialect does not support sequences
  |         at org.hibernate.dialect.Dialect.getSequenceNextValString(Dialect.java:596)
  |         at org.hibernate.id.SequenceGenerator.configure(SequenceGenerator.java:65)
  |         at org.hibernate.id.SequenceHiLoGenerator.configure(SequenceHiLoGenerator.java:43)
  |         at org.hibernate.id.IdentifierGeneratorFactory.create(IdentifierGeneratorFactory.java:94)
  |         ... 149 more
  | 
  | 

As the database is Sybase and read-only, I have put the following in persistence.xml:

  |     <properties>
  | 	   <property name="hibernate.hbm2ddl.auto" value="none"/>
  |        <property name="hibernate.dialect" value="org.hibernate.dialect.SybaseAnywhereDialect"/>    
  |     </properties>
  | 
  | 

(I've also tried SybaseDialect instead, no difference.)

I appreciate any help anyone can offer as I have been stuck on this issue for 5 days now!

Regards
Matt

View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4095551#4095551

Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4095551



More information about the jboss-user mailing list