EJB 2.0 Compund Key problems
Hello,
I try to write a sample application to get in the topic of EJB 2.0. If u can help me, it´d be greate. It´s for my thesis and REALLY urgent!!!
I can deploy and use my application if I only have one primary key. But I need to have two primary keys (one compund key). I alays get an error message which says:
BankClient
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.ServerException: removing bean lock and it has tx set!; nested exception is:
java.lang.IllegalStateException: removing bean lock and it has tx set!
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:292)
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:536)
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:128)
at org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:108)
at org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.java:73)
at org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:76)
at org.jboss.proxy.ejb.EntityInterceptor.invoke(EntityInterceptor.java:116)
at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:76)
at $Proxy1.getAccDescription(Unknown Source)
at BankClient.create(BankClient.java:79)
at BankClient.main(BankClient.java:92)
Caused by: java.rmi.ServerException: removing bean lock and it has tx set!; nested exception is:
java.lang.IllegalStateException: removing bean lock and it has tx set!
at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:119)
at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:167)
at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:61)
at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:129)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:166)
at org.jboss.ejb.EntityContainer.invoke(EntityContainer.java:493)
at org.jboss.ejb.Container.invoke(Container.java:705)
at org.jboss.ejb.EntityContainer.invoke(EntityContainer.java:1055)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:491)
at org.jboss.invocation.jrmp.server.JRMPInvoker.invoke(JRMPInvoker.java:362)
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:536)
Caused by: java.lang.IllegalStateException: removing bean lock and it has tx set!
at org.jboss.ejb.plugins.lock.QueuedPessimisticEJBLock.removeRef(QueuedPessimisticEJBLock.java:469)
at org.jboss.ejb.BeanLockManager.removeLockRef(BeanLockManager.java:78)
at org.jboss.ejb.plugins.EntityLockInterceptor.invoke(EntityLockInterceptor.java:124)
at org.jboss.ejb.plugins.EntityCreationInterceptor.invoke(EntityCreationInterceptor.java:69)
at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:96)
... 20 more
run..
findbyprimkey done
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.ServerException: removing bean lock and it has tx set!; nested exception is:
java.lang.IllegalStateException: removing bean lock and it has tx set!
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:292)
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:536)
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:128)
at org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:108)
at org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.java:73)
at org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:76)
at org.jboss.proxy.ejb.EntityInterceptor.invoke(EntityInterceptor.java:116)
at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:76)
at $Proxy1.getAccDescription(Unknown Source)
at BankClient.run(BankClient.java:64)
at BankClient.main(BankClient.java:93)
Caused by: java.rmi.ServerException: removing bean lock and it has tx set!; nested exception is:
java.lang.IllegalStateException: removing bean lock and it has tx set!
at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:119)
at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:167)
at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:61)
at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:129)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:166)
at org.jboss.ejb.EntityContainer.invoke(EntityContainer.java:493)
at org.jboss.ejb.Container.invoke(Container.java:705)
at org.jboss.ejb.EntityContainer.invoke(EntityContainer.java:1055)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:491)
at org.jboss.invocation.jrmp.server.JRMPInvoker.invoke(JRMPInvoker.java:362)
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:536)
Caused by: java.lang.IllegalStateException: removing bean lock and it has tx set!
at org.jboss.ejb.plugins.lock.QueuedPessimisticEJBLock.removeRef(QueuedPessimisticEJBLock.java:469)
at org.jboss.ejb.BeanLockManager.removeLockRef(BeanLockManager.java:78)
at org.jboss.ejb.plugins.EntityLockInterceptor.invoke(EntityLockInterceptor.java:124)
at org.jboss.ejb.plugins.EntityCreationInterceptor.invoke(EntityCreationInterceptor.java:69)
at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:96)
... 20 more
My BankAccountBean.java
package bankaccount;
import javax.ejb.*;
public abstract class BankAccountBean implements EntityBean {
private EntityContext theContext;
public BankAccountBean() {
final String name = "BankAccountBean";
}
//Die create-Methode des Home-Interface
// WORKING: public String ejbCreate(String accNo,
public BankAccountPK ejbCreate(String accNo,
String accDescription,
float initialBalance)
throws CreateException
{
setAccountNumber(accNo);
setAccountDescription(accDescription);
setAccountBalance(initialBalance);
return null;
}
public void ejbPostCreate(String accNo,
String accDescription,
float initialBalance)
throws CreateException
{
}
//Abstrakte getter-/setter-Methoden
public abstract String getAccountNumber();
public abstract void setAccountNumber(String acn);
public abstract String getAccountDescription();
public abstract void setAccountDescription(String acd);
public abstract float getAccountBalance();
public abstract void setAccountBalance(float acb);
//Die Methoden des Remote-Interface
public String getAccNumber() {
return getAccountNumber();
}
public String getAccDescription() {
return getAccountDescription();
}
public float getBalance() {
return getAccountBalance();
}
public void increaseBalance(float amount) {
float acb = getAccountBalance();
acb += amount;
setAccountBalance(acb);
}
public void decreaseBalance(float amount) {
float acb = getAccountBalance();
acb -= amount;
setAccountBalance(acb);
}
public void setEntityContext(EntityContext ctx) {
theContext = ctx;
}
public void unsetEntityContext() {
theContext = null;
}
public void ejbRemove()
throws RemoveException
{
}
public void ejbActivate() {
}
public void ejbPassivate() {
}
public void ejbLoad() {
}
public void ejbStore() {
}
}
My BankAccountHome.java
package bankaccount;
import java.rmi.RemoteException;
import javax.ejb.*;
public interface BankAccountHome extends EJBHome {
//Erzeugen eines Kontos
public BankAccount create(String accNo,
String accDescription,
float initialBalance)
throws CreateException, RemoteException;
//Finden eines bestimmten Kontos
public BankAccount findByPrimaryKey(BankAccountPK accPK)
// WORKING: public BankAccount findByPrimaryKey(String accPK)
throws FinderException, RemoteException;
}
My BankAccountPK.java
package bankaccount;
public class BankAccountPK implements java.io.Serializable {
public String accountNumber;
public String accountDescription;
public BankAccountPK(String accountNumber, String accountDescription) {
this.accountNumber = accountNumber;
this.accountDescription = accountDescription;
}
public BankAccountPK() {
accountNumber = new String();
accountDescription = new String();
}
public int hashCode() {
return accountNumber.hashCode();
}
public String getAccountNumber(){
return accountNumber;
}
public String getAccountDescription(){
return accountDescription;
}
public boolean equals(Object other) {
// return true;
return accountNumber.equals(other);
}
public String toString() {
return accountNumber;
}
}
PLEASE, ANY HELP IS WELCOME
