I am getting the following error when I am trying to look up a remote EJB from another EJB.
Error occurs while the EJB Scheme Context Factory trying to resolve an EJB with scheme ejb:/appName=qp.org/testremotecidear, jarName=qp.org~testcidremoteejb.jar, beanName=TestCIDRemoteEJb, interfaceType=remote, interfaceName=com.qp.cid.ejb.TestCIDRemoteEJbRemote. Check server's trace files for more details.
[EXCEPTION]
javax.naming.NamingException: Error occurs while the EJB Object Factory trying to resolve JNDI reference Reference Class Name: EJB Reference
Type: schemeLookup
Content: true
Type: interfaceType
Content: remote
Type: remote
Content: com.qp.cid.ejb.TestCIDRemoteEJbRemote
Type: ejb-link
Content: TestCIDRemoteEJb
Type: appName
Content: qp.org/testremotecidear
Type: clientAppName
Content: qp.org/testremotecidear
Type: ejb-jar
Content: qp.org~testcidremoteejb.jar
java.lang.ClassCastException: cannot assign instance of com.sap.engine.services.rmi_p4.P4ProxyWrapper to field com.sap.engine.services.ejb3.runtime.SerializedClientProxy.interfaces of type [Ljava.lang.Class; in instance of com.sap.engine.services.ejb3.runtime.SerializedClientProxy
at java.io.ObjectStreamClass$FieldReflector.setObjFieldValues(ObjectStreamClass.java:2054)
at java.io.ObjectStreamClass.setObjFieldValues(ObjectStreamClass.java:1227)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1999)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1917)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1793)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1338)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:358)
at com.sap.engine.services.rmi_p4.reflect.P4InvocationHandler.readResult(P4InvocationHandler.java:302)
at com.sap.engine.services.rmi_p4.reflect.P4InvocationHandler.invokeInternal(P4InvocationHandler.java:138)
at com.sap.engine.services.rmi_p4.reflect.AbstractInvocationHandler.invoke(AbstractInvocationHandler.java:52)
at com.sun.proxy.$Proxy906.resolveReference(Unknown Source)
at com.sap.engine.services.ejb3.runtime.impl.EJBObjectFactory.getObjectInstance(EJBObjectFactory.java:197)
at com.sap.engine.services.ejb3.runtime.impl.EJBObjectFactory.getObjectInstance(EJBObjectFactory.java:109)
at com.sap.engine.services.ejb3.runtime.impl.JNDIejbResolverContext.lookup(JNDIejbResolverContext.java:122)
at javax.naming.InitialContext.lookup(InitialContext.java:392)
at javax.naming.InitialContext.lookup(InitialContext.java:392)
Can you please let me know what could be the problem.
The code for the EJB method that invokes this remote EJB is as follows:
public String callCIDRemoteBean(String tempMessage){
String retMessage = "PID EJB Message:"+tempMessage;
String cidejbMessage = "";
String providerUrl = "<hostname>:<port>";
String securityPrincipal = "<user>";
String securityCredentials = "<password>";
Properties props = new Properties();
try{
props.put(Context.INITIAL_CONTEXT_FACTORY, "com.sap.engine.services.jndi.InitialContextFactoryImpl");
props.put(Context.PROVIDER_URL, providerUrl);
props.put(Context.SECURITY_PRINCIPAL, securityPrincipal);
props.put(Context.SECURITY_CREDENTIALS, securityCredentials);
// props.put("force_remote", "true");
props.put(Context.URL_PKG_PREFIXES, "com.sap.engine.services");
InitialContext ctx = new InitialContext(props);
System.err.println("After the InitialContext");
Object obj = ctx.lookup("ejb:/appName=qp.org/testremotecidear, jarName=qp.org~testcidremoteejb.jar, beanName=TestCIDRemoteEJb, interfaceType=remote, interfaceName=com.qp.cid.ejb.TestCIDRemoteEJbRemote");
System.err.println("Class name-"+ obj.getClass().getName());
System.err.println("After calling remote EJB: cidejbMessage"+cidejbMessage);
}catch (Exception e) {
System.err.println("Inside Exception");
e.printStackTrace();
}
return retMessage + ": "+cidejbMessage;
}