Noob in EJB3 :D

[kamikadze]

Hello,

I have entity bean eg:

@Entity
public class Apple()
{
@Id
public Integer id;
public String name;
}

Stateless Bean:

@Stateless
public class FruitManager implements FruitManagerRemote()
{
 public apple getAppleById(int id)
 {
 Apple apple=em.find(apple.class,1);
 return apple;
 }
}

Client Code:

public class Client {
 public static void main(String[] args) {
 Properties properties = new Properties();
 //init of properties are here for jndi
 Context context;
 try
 {
 context = new InitialContext();
 FruitManagerRemote fruit = (FruitManagerRemote)context.lookup("FruitManager/Remote");
 Apple apple=fruit.getAppleById(1);
 }
}

Why I can obtain Apple object at client side?
There are some error at client side (I can add stack trace tomorow).

If I made an Apple in FruitManager I can get it from client, but if it was persisted it can be send to client? Is it right behaviour?

Maybe at client side should I remove annotations?

Any ideas?

[kamikadze]

According to this: http://www.roseindia.net/ejb/entity-bean-example.shtml it should work.

Is important that client is out of container? I doubt so.

Any ideas?

[jwenting]

Never trust roseindia. That site is terrible!

It does indeed matter whether the client is in- or outside the container. The creation of the InitialContext for example is quite different, requires more parameters when doing so from outside the container (things like where to find the container).

[kamikadze]

initial context:

 Properties properties = new Properties();
 properties.put("java.naming.factory.initial",
 "org.jnp.interfaces.NamingContextFactory");
 properties.put("java.naming.factory.url.pkgs",
 "=org.jboss.naming:org.jnp.interfaces");
 properties.put("java.naming.provider.url", "10.132.15.227:1099");
 Context context;

stack trace:

Useraccount [id=1, profiles=null, userLogin=admin, userPassMd5=admin]
Exception in thread "main" javax.ejb.EJBException: java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.String
 at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:77)
 at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:83)
 at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:190)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.tx.NullInterceptor.invoke(NullInterceptor.java:42)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.security.Ejb3AuthenticationInterceptorv2.invoke(Ejb3AuthenticationInterceptorv2.java:186)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:41)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.BlockContainerShutdownInterceptor.invoke(BlockContainerShutdownInterceptor.java:67)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.currentinvocation.CurrentInvocationInterceptor.invoke(CurrentInvocationInterceptor.java:67)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke(StatelessContainer.java:421)
 at org.jboss.ejb3.session.InvokableContextClassProxyHack._dynamicInvoke(InvokableContextClassProxyHack.java:53)
 at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:91)
 at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82)
 at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:891)
 at org.jboss.remoting.transport.socket.ServerThread.completeInvocation(ServerThread.java:744)
 at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:697)
 at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:524)
 at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:232)
Caused by: java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.String
 at org.hibernate.type.StringType.toString(StringType.java:67)
 at org.hibernate.type.NullableType.nullSafeToString(NullableType.java:117)
 at org.hibernate.type.NullableType.nullSafeSet(NullableType.java:158)
 at org.hibernate.type.NullableType.nullSafeSet(NullableType.java:136)
 at org.hibernate.param.NamedParameterSpecification.bind(NamedParameterSpecification.java:61)
 at org.hibernate.loader.hql.QueryLoader.bindParameterValues(QueryLoader.java:514)
 at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1589)
 at org.hibernate.loader.Loader.doQuery(Loader.java:696)
 at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:259)
 at org.hibernate.loader.Loader.doList(Loader.java:2228)
 at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2125)
 at org.hibernate.loader.Loader.list(Loader.java:2120)
 at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:401)
 at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:361)
 at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:196)
 at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1148)
 at org.hibernate.impl.QueryImpl.list(QueryImpl.java:102)
 at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:67)
 at com.ca.mailing.ProfileManagerBean.getUsProfileById(ProfileManagerBean.java:73)
 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.aop.joinpoint.MethodInvocation.invokeTarget(MethodInvocation.java:122)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:111)
 at org.jboss.ejb3.EJBContainerInvocationWrapper.invokeNext(EJBContainerInvocationWrapper.java:69)
 at org.jboss.ejb3.interceptors.aop.InterceptorSequencer.invoke(InterceptorSequencer.java:73)
 at org.jboss.ejb3.interceptors.aop.InterceptorSequencer.aroundInvoke(InterceptorSequencer.java:59)
 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.aop.advice.PerJoinpointAdvice.invoke(PerJoinpointAdvice.java:174)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor.fillMethod(InvocationContextInterceptor.java:72)
 at org.jboss.aop.advice.org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor_z_fillMethod_4256705.invoke(InvocationContextInterceptor_z_fillMethod_4256705.java)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor.setup(InvocationContextInterceptor.java:88)
 at org.jboss.aop.advice.org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor_z_setup_4256705.invoke(InvocationContextInterceptor_z_setup_4256705.java)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:62)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:56)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.tx.NullInterceptor.invoke(NullInterceptor.java:42)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:68)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79)
 at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:190)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.tx.NullInterceptor.invoke(NullInterceptor.java:42)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.security.Ejb3AuthenticationInterceptorv2.invoke(Ejb3AuthenticationInterceptorv2.java:186)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:41)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.BlockContainerShutdownInterceptor.invoke(BlockContainerShutdownInterceptor.java:67)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.currentinvocation.CurrentInvocationInterceptor.invoke(CurrentInvocationInterceptor.java:67)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke(StatelessContainer.java:421)
 at org.jboss.ejb3.session.InvokableContextClassProxyHack._dynamicInvoke(InvokableContextClassProxyHack.java:53)
 at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:91)
 at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82)
 at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:891)
 at org.jboss.remoting.transport.socket.ServerThread.completeInvocation(ServerThread.java:744)
 at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:697)
 at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:524)
 at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:232)
 at org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:211)
 at org.jboss.remoting.Client.invoke(Client.java:1724)
 at org.jboss.remoting.Client.invoke(Client.java:629)
 at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:60)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.tx.ClientTxPropagationInterceptor.invoke(ClientTxPropagationInterceptor.java:61)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.security.client.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java:65)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:74)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.remoting.PojiProxy.invoke(PojiProxy.java:62)
 at $Proxy5.invoke(Unknown Source)
 at org.jboss.ejb3.proxy.impl.handler.session.SessionProxyInvocationHandlerBase.invoke(SessionProxyInvocationHandlerBase.java:207)
 at org.jboss.ejb3.proxy.impl.handler.session.SessionProxyInvocationHandlerBase.invoke(SessionProxyInvocationHandlerBase.java:164)
 at $Proxy4.getUsProfileById(Unknown Source)
 at com.ca.mailing.client.UserClient.main(UserClient.java:86)
 at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:72)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.tx.ClientTxPropagationInterceptor.invoke(ClientTxPropagationInterceptor.java:61)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.security.client.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java:65)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:74)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.remoting.PojiProxy.invoke(PojiProxy.java:62)
 at $Proxy5.invoke(Unknown Source)
 at org.jboss.ejb3.proxy.impl.handler.session.SessionProxyInvocationHandlerBase.invoke(SessionProxyInvocationHandlerBase.java:207)
 at org.jboss.ejb3.proxy.impl.handler.session.SessionProxyInvocationHandlerBase.invoke(SessionProxyInvocationHandlerBase.java:164)
 at $Proxy4.getUsProfileById(Unknown Source)
 at com.ca.mailing.client.UserClient.main(UserClient.java:86)

any ideas why I get this?

[wolfgangknauf]

Hi,

according to the exception, there is a "java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.String" in code called from "com.ca.mailing.ProfileManagerBean.getUsProfileById(ProfileManagerBean.java:73)". So maybe your ID property has type "int" while you try to load some data with a "string" parameter. Take a look at this code, and if you don't see a solution, post "getUsProfileById" and your entity bean.

Best regards

Wolfgang