Hi again,
I have two BMP EJBs (let's say A and B)with container managed transactions.
The client is performing the following actions:
1) Obtains a referenerence to the home interface of A
2) Obtains a referenerence to the home interface of B
Brem mObj =BHome.create("99", "www.kamen.com", "Have a lot of fun!");
Collection c = BHome.findBySomeFiled("3");
Iterator i = c.iterator();
while (i.hasNext()) {
Brem mi = (B)i.next();
String miId = (String)mi.getPrimaryKey();
System.out.println("Id = " + miId);
}
boolean b = true;
System.out.println();
B jb = BHome.findByPrimaryKey("2");
jb.setSomeField("543");
A myA = AHome.findByPrimaryKey("3");
ArrayList a = myA.getMore_B_Ids();//this will invoke a method on
bean A which in turn will invoke a method on bean B (internally)
i = a.iterator();
while (i.hasNext()) {
String InfoId = (String)i.next();
B mi = BHome.findByPrimaryKey(InfoId);
String descr = mi.getDescr();
System.out.println(InfoId + ": " + descr);
}
the beans are persisting their state in an MS Access database using the
sun.jdbc.odbc.JdbcOdbcDriver bridge.
Now when I set the transaction property of the beans to REQUIRED everything
works fine,
however when I set it to SUPPORTS it works well on every 2 of 3 client app
executions. On every third execution I get the follwing dump on the client
side:
5: no visa information there4
6: no visa information there5
7: no visa information there6
8: no visa information there7
S:\jboss\jBoss20\proj\visa>runclient
The obj ref is: AEJBHome
Got a reference! Preparing to narrow...
The obj ref is: BEJBHome
Got a reference! Preparing to narrow...
Caught an exception.
javax.ejb.CreateException: Create failed(could not call
ejbCreate):java.lang.ref
lect.InvocationTargetException
at
sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(Unknow
n Source)
at sun.rmi.transport.StreamRemoteCall.executeCall(Unknown Source)
at sun.rmi.server.UnicastRef.invoke(Unknown Source)
at
org.jboss.ejb.plugins.jrmp.server.JRMPContainerInvoker_Stub.invokeHom
e(Unknown Source)
at
org.jboss.ejb.plugins.jrmp.interfaces.HomeProxy.invoke(HomeProxy.java
:221)
at $Proxy1.create(Unknown Source)
at MyClient.main(VisaClient.java:30)
on the server side the trace is:
[Default] Tx is null
[Default] invokeHome
[MoreInfEJB] TX_SUPPORTS for create
[MoreInfEJB] in ejbCreate
[Default] javax.ejb.CreateException: Create failed(could not call
ejbCreate):jav
a.lang.reflect.InvocationTargetException
at
org.jboss.ejb.plugins.BMPPersistenceManager.createEntity(BMPPersisten
ceManager.java:113)
at
org.jboss.ejb.EntityContainer.createHome(EntityContainer.java:432)
at java.lang.reflect.Method.invoke(Native Method)
at
org.jboss.ejb.EntityContainer$ContainerInterceptor.invokeHome(EntityC
ontainer.java:590)
at
org.jboss.ejb.plugins.EntitySynchronizationInterceptor.invokeHome(Ent
itySynchronizationInterceptor.java:162)
at
org.jboss.ejb.plugins.EntityInstanceInterceptor.invokeHome(EntityInst
anceInterceptor.java:79)
at
org.jboss.ejb.plugins.TxInterceptor.invokeNext(TxInterceptor.java:130
)
at
org.jboss.ejb.plugins.TxInterceptor.runWithTransactions(TxInterceptor
.java:271)
at
org.jboss.ejb.plugins.TxInterceptor.invokeHome(TxInterceptor.java:83)
at
org.jboss.ejb.plugins.SecurityInterceptor.invokeHome(SecurityIntercep
tor.java:122)
at
org.jboss.ejb.plugins.LogInterceptor.invokeHome(LogInterceptor.java:1
03)
at
org.jboss.ejb.EntityContainer.invokeHome(EntityContainer.java:310)
at
org.jboss.ejb.plugins.jrmp.server.JRMPContainerInvoker.invokeHome(JRM
PContainerInvoker.java:194)
at
org.jboss.ejb.plugins.jrmp.server.JRMPContainerInvoker.invokeHome(JRM
PContainerInvoker.java:148)
at java.lang.reflect.Method.invoke(Native Method)
at sun.rmi.server.UnicastServerRef.dispatch(Unknown Source)
at sun.rmi.transport.Transport$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown
Sour
ce)
at java.lang.Thread.run(Unknown Source)
Please let me know what are the recommended transaction settings for the
container managed transactions (except REQUIRED which seems to be working
without any problem but is slow)
when I want to avoid the transaction overhead.
One more question - is there a way to set the verbosity level of the server?
Regards,
Kamen.
----- Original Message -----
From: "Aaron Mulder" <[EMAIL PROTECTED]>
To: "jBoss" <[EMAIL PROTECTED]>
Sent: Monday, September 25, 2000 5:26 PM
Subject: Re: [jBoss-User] EJB-ref problem
> No, as you saw, it causes protocol errors in some of the
> underlying libraries. We would like to work around this, but there is not
> a short-term solution.
>
> Aaron
>
> On Mon, 25 Sep 2000, Kamen wrote:
> > Hi Aaron,
> > is there a setting somewhere in the configuration files that I could
modify
> > so that I could keep jboss installed in the 'Program Files' folder.
> > Regards,
> > Kamen
>
>
>
> --
> --------------------------------------------------------------
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> Problems?: [EMAIL PROTECTED]
>
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