Thanks Andrus for your reply. I also thought like that after some more debugging too.
Please let me know how can create/refer a Datasource for a cayenne JPA sample. Does it related to org.apache.cayenne.jpa.jpaDataSourceFactory property? Is there any resource refer? Thanks, Lasantha > Looks like some cross-ClassLoader issue in Geronimo. I don't think > this is Cayenne related. > > Andrus > > On Feb 25, 2007, at 5:04 AM, Lasantha Ranaweera wrote: > >> Hi Cayenne Experts, >> >> Currently I have been hitting with a problem of ClassCastException >> in my >> first JPA program of Geronimo/Caynne integration. I am unable to >> find out >> the exact problem since my knowledge of Cayenne architecture is pretty >> low. In the Geronimo side following is the line it gives this problem. >> >> Class clazz = classLoader.loadClass(persistenceProviderClassName); >> PersistenceProvider persistenceProvider = >> (PersistenceProvider)clazz.newInstance(); //here is the CCE Exception >> >> In Eclipse remote debugging enviroment it comes to Cayenne Provider >> class >> and it finishes default constructor without any errors. Does the >> Cayenne >> do anyting after creating the Provider instance when it comes to a >> server >> enviroment? I split two statements investigate more and list the >> interfaces in clazz variable. It lists PersistenceProvider interface >> correctly too. So I am wondering where is CCE occurs. I attached >> the error >> below but it doesn't give that much information. Any help please ... >> >> Additionally I didn't add any properties in persitence.xml file. I >> want to >> use Derby database to save JPA object too. Do I need to set >> org.apache.cayenne.jpa.jpaDataSourceFactory property, then what is the >> value it should be? >> >> <persistence xmlns="http://java.sun.com/xml/ns/persistence"; >> version="1.0"> >> >> <persistence-unit transaction-type="RESOURCE_LOCAL" >> name="openjpa-itest"> >> <provider>org.apache.cayenne.jpa.Provider</provider> >> <class>org.apache.geronimo.itest.jpa.AllFieldTypes</class> >> <exclude-unlisted-classes/> >> >> <properties> >> <!-- >> <property >> name="org.apache.cayenne.jpa.jpaDataSourceFactory" >> value=""/> >> --> >> </properties> >> </persistence-unit> >> </persistence> >> >> Thanks, >> Lasantha Ranaweera >> >> java.lang.ClassCastException: org.apache.cayenne.jpa.Provider >> at >> org.apache.geronimo.persistence.PersistenceUnitGBean.<init> >> (PersistenceUnitGBean.java:102) >> 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:494) >> at >> org.apache.geronimo.gbean.runtime.GBeanInstance.createInstance >> (GBeanInstance.java:936) >> at >> org.apache.geronimo.gbean.runtime.GBeanInstanceState.attemptFullStart( >> GBeanInstanceState.java:267) >> at >> org.apache.geronimo.gbean.runtime.GBeanInstanceState.start >> (GBeanInstanceState.java:102) >> at >> org.apache.geronimo.gbean.runtime.GBeanInstanceState.startRecursive >> (GBeanInstanceState.java:124) >> at >> org.apache.geronimo.gbean.runtime.GBeanInstance.startRecursive >> (GBeanInstance.java:543) >> at >> org.apache.geronimo.kernel.basic.BasicKernel.startRecursiveGBean >> (BasicKernel.java:379) >> at >> org.apache.geronimo.kernel.config.ConfigurationUtil.startConfiguration >> GBeans(ConfigurationUtil.java:434) >> at >> org.apache.geronimo.kernel.config.KernelConfigurationManager.start >> (KernelConfigurationManager.java:188) >> at >> org.apache.geronimo.kernel.config.SimpleConfigurationManager.startConf >> iguration(SimpleConfigurationManager.java:527) >> at >> org.apache.geronimo.kernel.config.SimpleConfigurationManager.startConf >> iguration(SimpleConfigurationManager.java:508) >> at >> org.apache.geronimo.kernel.config.SimpleConfigurationManager$ >> $FastClassByCGLIB$$ce77a924.invoke(<generated>) >> at net.sf.cglib.reflect.FastMethod.invoke(FastMethod.java:53) >> at >> org.apache.geronimo.gbean.runtime.FastMethodInvoker.invoke >> (FastMethodInvoker.java:38) >> at >> org.apache.geronimo.gbean.runtime.GBeanOperation.invoke >> (GBeanOperation.java:127) >> at >> org.apache.geronimo.gbean.runtime.GBeanInstance.invoke >> (GBeanInstance.java:855) >> at >> org.apache.geronimo.kernel.basic.BasicKernel.invoke >> (BasicKernel.java:239) >> at >> org.apache.geronimo.kernel.KernelGBean.invoke(KernelGBean.java:342) >> at >> org.apache.geronimo.kernel.KernelGBean$$FastClassByCGLIB$ >> $1cccefc9.invoke(<generated>) >> at net.sf.cglib.reflect.FastMethod.invoke(FastMethod.java:53) >> at >> org.apache.geronimo.gbean.runtime.FastMethodInvoker.invoke >> (FastMethodInvoker.java:38) >> at >> org.apache.geronimo.gbean.runtime.GBeanOperation.invoke >> (GBeanOperation.java:127) >> at >> org.apache.geronimo.gbean.runtime.GBeanInstance.invoke >> (GBeanInstance.java:855) >> at >> org.apache.geronimo.kernel.basic.BasicKernel.invoke >> (BasicKernel.java:239) >> at >> org.apache.geronimo.system.jmx.MBeanGBeanBridge.invoke >> (MBeanGBeanBridge.java:168) >> at >> com.sun.jmx.mbeanserver.DynamicMetaDataImpl.invoke >> (DynamicMetaDataImpl.java:213) >> at com.sun.jmx.mbeanserver.MetaDataImpl.invoke >> (MetaDataImpl.java:220) >> at >> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke >> (DefaultMBeanServerInterceptor.java:815) >> at >> com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:784) >> at >> javax.management.remote.rmi.RMIConnectionImpl.doOperation >> (RMIConnectionImpl.java:1408) >> at >> javax.management.remote.rmi.RMIConnectionImpl.access$100 >> (RMIConnectionImpl.java:81) >> at >> javax.management.remote.rmi.RMIConnectionImpl >> $PrivilegedOperation.run(RMIConnectionImpl.java:1245) >> at java.security.AccessController.doPrivileged(Native Method) >> at >> javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation >> (RMIConnectionImpl.java:1348) >> at >> javax.management.remote.rmi.RMIConnectionImpl.invoke >> (RMIConnectionImpl.java:782) >> 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:585) >> at >> sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:294) >> at sun.rmi.transport.Transport$1.run(Transport.java:153) >> at java.security.AccessController.doPrivileged(Native Method) >> at sun.rmi.transport.Transport.serviceCall(Transport.java:149) >> at >> sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java: >> 466) >> at >> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run >> (TCPTransport.java:707) >> at java.lang.Thread.run(Thread.java:595) >> >> >> >> > >
