Re: [jBoss-User] Null pointer exceptions getting PK fromcontext. ..

[Peter Henderson]

About 99% sure db_data is not null..   public class ContactBean implements EntityBean {     private static final boolean VERBOSE = false;     private boolean isModified = false;     private boolean isModifiedProps = false;     protected EntityContext ctx;     ContactEntityBeanData db_data = new ContactEntityBeanData();        // ONLY place in my code where db_data is set...     ....   ----- Original Message ----- From: Bordet, Simone To: 'jBoss' Sent: Monday, December 04, 2000 11:45 AM Subject: RE: [jBoss-User] Null pointer exceptions getting PK from context. .. Hey,   are you sure that at line 61 db_data is not null ?   Simon Hi all   JBoss 2 final   I have a session bean that does a DB select, then loads up a number of entity beans. Sometimes while loading the entity beans, after loading some of the beans, i get a null pointer exception getting the PK from the beans context...   Anyone got any tips/suggestions?   Peter.     --- entity bean ----     public void ejbLoad() throws javax.ejb.EJBException, java.rmi.RemoteException {         if ( VERBOSE ) System.out.println("in ejbLoad" );         long starttime = System.currentTimeMillis();           ContactPK pk = (ContactPK)ctx.getPrimaryKey();          this.db_data.id = pk.id;                                                // LINE 61         this.isModified = false; ...     public void setEntityContext(EntityContext ctx) throws javax.ejb.EJBException, java.rmi.RemoteException {         this.ctx = ctx;     }       public void unsetEntityContext() throws javax.ejb.EJBException, java.rmi.RemoteException {         ctx = null;     }     --- contact entity pk --- public class ContactPK implements java.io.Serializable {     int id;         // the unique database id.     public ContactPK(int id) {         this.id = id;     }     public ContactPK() {         this.id = -1;     }     public String toString() {         return "[ContactPK(id=" + Integer.toString(id) + "]";     }     public int hashCode() {         return id;     }     public boolean equals(Object parm1) {         return this.id ==  ((ContactPK)parm1).id;     } }         JBoss Output   [ContactBean] ContactBean.ejbFindByPrimaryKey took 90 ms [ContactBean] ContactBean.ejbLoad took130 ms [ContactBean] ContactBean.ejbFindByPrimaryKey took 181 ms [ContactBean] ContactBean.ejbLoad took120 ms [ContactBean] ContactBean.ejbFindByPrimaryKey took 110 ms [ContactBean] ContactBean.ejbLoad took201 ms [ContactBean] ContactBean.ejbFindByPrimaryKey took 280 ms [ContactBean] ContactBean.ejbLoad took221 ms [ContactBean] ContactBean.ejbFindByPrimaryKey took 160 ms [ContactBean] TRANSACTION ROLLBACK EXCEPTION:null; nested exception is:         javax.ejb.EJBException [ContactBean] java.lang.NullPointerException [ContactBean]   at com.cpt.contactcenter.server.ContactBean.ejbLoad(ContactBean.java:61) [ContactBean]   at java.lang.reflect.Method.invoke(Native Method) [ContactBean]   at org.jboss.ejb.plugins.BMPPersistenceManager.loadEntity(BMPPersistenceManager.java:275) [ContactBean]   at org.jboss.ejb.plugins.EntitySynchronizationInterceptor.invoke(EntitySynchronizationInterceptor.java:192) [ContactBean]   at org.jboss.ejb.plugins.EntityInstanceInterceptor.invoke(EntityInstanceInterceptor.java:204) [ContactBean]   at org.jboss.ejb.plugins.TxInterceptorCMT.invokeNext(TxInterceptorCMT.java:133) [ContactBean]   at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:263) [ContactBean]   at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:99) [ContactBean]   at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:144) [ContactBean]   at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:192) [ContactBean]   at org.jboss.ejb.EntityContainer.invoke(EntityContainer.java:323) [ContactBean]   at org.jboss.ejb.plugins.jrmp.server.JRMPContainerInvoker.invoke(JRMPContainerInvoker.java:237) [ContactBean]   at org.jboss.ejb.plugins.jrmp.interfaces.EntityProxy.invoke(EntityProxy.java:146) [ContactBean]   at $Proxy16.getAll(Unknown Source) [ContactBean]   at com.cpt.contactcenter.server.AgentSessionBean.enumContacts(AgentSessionBean.java:242) [ContactBean]   at java.lang.reflect.Method.invoke(Native Method) [ContactBean]   at org.jboss.ejb.StatefulSessionContainer$ContainerInterceptor.invoke(StatefulSessionContainer.java:570) [ContactBean]   at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:144) [ContactBean]   at org.jboss.ejb.plugins.StatefulSessionInstanceInterceptor.invoke(StatefulSessionInstanceInterceptor.java:198) [ContactBean]   at org.jboss.ejb.plugins.TxInterceptorCMT.invokeNext(TxInterceptorCMT.java:133) [ContactBean]   at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:263) [ContactBean]   at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:99) [ContactBean]   at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:192) [ContactBean]   at org.jboss.ejb.StatefulSessionContainer.invoke(StatefulSessionContainer.java:326) [ContactBean]   at org.jboss.ejb.plugins.jrmp.server.JRMPContainerInvoker.invoke(JRMPContainerInvoker.java:163) [ContactBean]   at java.lang.reflect.Method.invoke(Native Method) [ContactBean]   at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:241) [ContactBean]   at sun.rmi.transport.Transport$1.run(Transport.java:142) [ContactBean]   at java.security.AccessController.doPrivileged(Native Method) [ContactBean]   at sun.rmi.transport.Transport.serviceCall(Transport.java:139) [ContactBean]   at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:443) [ContactBean]   at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:643) [ContactBean]   at java.lang.Thread.run(Thread.java:484) [AgentSession] Exception while enuming contacts javax.transaction.TransactionRolledbackException: null; nested exception is:         javax.ejb.EJBException