Help coderanch get a
new server
by contributing to the fundraiser
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Jeanne Boyarsky
  • Ron McLeod
  • Paul Clapham
  • Liutauras Vilda
Sheriffs:
  • paul wheaton
  • Rob Spoor
  • Devaka Cooray
Saloon Keepers:
  • Stephan van Hulst
  • Tim Holloway
  • Carey Brown
  • Frits Walraven
  • Tim Moores
Bartenders:
  • Mikalai Zaikin

finder method of CMP thows NULLPOINTER EXCEPTION

 
Greenhorn
Posts: 16
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
hello,

i have declared a public Collection findByName(String name) throws FinderException, RemoteException method in the cmp.

but it throws the following error on the client side. its create method working properly.

public product1Remote create(String productID, String name,
String description, Double baseValue) throws
CreateException, RemoteException;


i have correctily map the field with table.

javax.ejb.FinderException: Find failed: com.borland.datastore.jdbc.SqlState: Runtime Error: java.lang.NullPointerException

at org.jboss.ejb.plugins.cmp.jdbc.JDBCAbstractQueryCommand.execute(JDBCAbstractQueryCommand.java:194)

at org.jboss.ejb.plugins.cmp.jdbc.JDBCAbstractQueryCommand.execute(JDBCAbstractQueryCommand.java:91)

at org.jboss.ejb.plugins.cmp.jdbc.JDBCFindEntitiesCommand.execute(JDBCFindEntitiesCommand.java:40)

at org.jboss.ejb.plugins.cmp.jdbc.JDBCStoreManager.findEntities(JDBCStoreManager.java:599)

at org.jboss.ejb.plugins.CMPPersistenceManager.findEntities(CMPPersistenceManager.java:324)

at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.findEntities(CachedConnectionInterceptor.java:323)

at org.jboss.ejb.EntityContainer.find(EntityContainer.java:660)

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:324)

at org.jboss.ejb.EntityContainer$ContainerInterceptor.invokeHome(EntityContainer.java:998)

at org.jboss.ejb.plugins.AbstractInterceptor.invokeHome(AbstractInterceptor.java:88)

at org.jboss.ejb.plugins.EntitySynchronizationInterceptor.invokeHome(EntitySynchronizationInterceptor.java:188)

at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invokeHome(CachedConnectionInterceptor.java:215)

at org.jboss.ejb.plugins.AbstractInterceptor.invokeHome(AbstractInterceptor.java:88)

at org.jboss.ejb.plugins.EntityInstanceInterceptor.invokeHome(EntityInstanceInterceptor.java:91)

at org.jboss.ejb.plugins.EntityLockInterceptor.invokeHome(EntityLockInterceptor.java:61)

at org.jboss.ejb.plugins.EntityCreationInterceptor.invokeHome(EntityCreationInterceptor.java:28)

at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:88)

at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:243)

at org.jboss.ejb.plugins.TxInterceptorCMT.invokeHome(TxInterceptorCMT.java:74)

at org.jboss.ejb.plugins.SecurityInterceptor.invokeHome(SecurityInterceptor.java:92)

at org.jboss.ejb.plugins.LogInterceptor.invokeHome(LogInterceptor.java:120)

at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invokeHome(ProxyFactoryFinderInterceptor.java:93)

at org.jboss.ejb.EntityContainer.internalInvokeHome(EntityContainer.java:477)

at org.jboss.ejb.Container.invoke(Container.java:694)

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:324)

at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)

at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:549)

at org.jboss.invocation.jrmp.server.JRMPInvoker.invoke(JRMPInvoker.java:359)

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:324)

at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:261)

at sun.rmi.transport.Transport$1.run(Transport.java:148)

at java.security.AccessController.doPrivileged(Native Method)

at sun.rmi.transport.Transport.serviceCall(Transport.java:144)

at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)

at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701)

at java.lang.Thread.run(Thread.java:534)

at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:247)

at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:223)

at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:133)

at org.jboss.invocation.jrmp.server.JRMPInvoker_Stub.invoke(Unknown Source)

at org.jboss.invocation.jrmp.interfaces.JRMPInvokerProxy.invoke(JRMPInvokerProxy.java:135)

at org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:87)

at org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.java:46)

at org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:45)

at org.jboss.proxy.ejb.HomeInterceptor.invoke(HomeInterceptor.java:173)

at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:85)

at $Proxy0.findByName(Unknown Source)

at firstentityproject.ProductTestClient1.main(ProductTestClient1.java:23)


please response.


thanks
 
Greenhorn
Posts: 6
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Please verify whether you have configured <query> in ejb-jar.xml
You should be configuring something like the following:
<query>
<query-method>
<method-name>findByName</method-name>
<method-params>
<method-param>java.lang.String</method-param>
</method-params>
</query-method>
<ejb-ql>
<![CDATA[select object(a) from BeanName as a where a.field = ?1]]>
</ejb-ql>
</query>
 
A wop bop a lu bob a womp bam boom. Tutti frutti ad:
We need your help - Coderanch server fundraiser
https://coderanch.com/t/782867/Coderanch-server-fundraiser
reply
    Bookmark Topic Watch Topic
  • New Topic