Java EJB's from VB via CAS COM

I'm am trying to access a Java EJB on an Orion
application server from a VB app using the Early
Access version of the current CAS COM Bridge.
I am providing details of the Orion server configuration and also relevent statement for the VB app.
First, the following is the rmi.xml file for our orion server:
<?xml version="1.0"?>
<!DOCTYPE rmi-server PUBLIC "Orion RMI-server" "http://xmlns.oracle.com/ias/dtds/rmi-server.dtd">
<rmi-server port="23791" >



<log>
<file path="../log/rmi.log" />
</log>
</rmi-server>
Second, the following is our server.xml file:
<?xml version="1.0"?>
<!DOCTYPE application-server PUBLIC "-//Evermind//DTD Orion Application-server//EN" "http://xmlns.oracle.com/ias/dtds/application-server.dtd">
<application-server application-directory="../applications"
deployment-directory="../application-deployments">
<library path="../tools.jar" />
<rmi-config path="./rmi.xml" />
<jms-config path="./jms.xml" />
<log>
<file path="../log/server.log" />
</log>
<transaction-config timeout="30000" />
<global-application name="default" path="application.xml" />
<application name="eproposal" path="C:\oc4j\j2ee\home\applications\eproposal.ear auto-start="true" />
<global-web-app-config path="global-web-application.xml" />
<web-site path="./default-web-site.xml" />
<cluster id="-1335203624" />
</application-server>
Lastly, we are using the Early Access version of the current Sun J2EE CAS COM Bridge to access this server from a VB6 app. Sun's documentation for Accessing EJB components on a J2EE server from a VB app states the following:
Dim J2eeRi As J2eeRiServices
Set J2eeRi = New J2eeRiServices
J2eeRi.ProviderURL="iiop://host:port"
We replaced the call to ProviderURL with the following:
J2eeRi.ProviderURL="ormi://n6908ccj4b166/eproposal"
and when it executes we get the following error:
Invalid ProviderURL:ormi//n6908ccj4b166/eproposal
Can anyone provide any help?
Thanks,
Mike

the first stuff i haven't really looked at but this...
J2eeRi.ProviderURL="iiop://host:port"
is not the same as
J2eeRi.ProviderURL="ormi://n6908ccj4b166/eproposal"
1) where is the port.. shouldn't it look like
J2eeRi.ProviderURL="ormi://n6908ccj4b166/eproposal:5000"
if for example the port was 5000
2)also i'm not sure what is happening but in the error Invalid ProviderURL:ormi//n6908ccj4b166/eproposal
what has happened to the : between ormi and //
make sure the : is there too.
3)is the ormi part valid. this is the protocol no? should it not also be iiop. i really don't know about this one but it strikes me as odd....
hope this is somewhat helpful.

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import java.io.Serializable;
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Iterop.axb partial dump
___[MOD] C:\Documents and Settings\Elie A. Cohen.USINC022\My Documents\Visual Studio 2010\Projects\Repo API Example\Repo API Example\obj\x86\Release\Interop.axb.dll
| M A N I F E S T
|___[NSP] axb
| |___[INT] axb.axb
| | | .class interface public abstract auto ansi import /*02000006*/
| | | implements axb.axbDispatch/*02000003*/
| | | implements axb.axbSource_Event/*02000005*/
| | | .custom /*0C000018:0A000001*/ instance void [mscorlib/*23000001*/]System.Runtime.InteropServices.GuidAttribute/*01000002*/::.ctor(string) /* 0A000001 */ = ( 01 00 24 34 45 36 44 30 44 41 38 2D 36 41 45 44 // ..$4E6D0DA8-6AED ...
| | | .custom /*0C000019:0A000007*/ instance void [mscorlib/*23000001*/]System.Runtime.InteropServices.CoClassAttribute/*01000009*/::.ctor(class [mscorlib/*23000001*/]System.Type/*01000007*/) /* 0A000007 */ = ( 01 00 0C 61 78 62 2E 61 78 62 43 6C 61 73 73 00 // ...axb.axbClass. ...
| |
| |___[CLS] axb.axbClass
| | | .class public auto ansi import /*02000004*/
| | | implements axb.axbDispatch/*02000003*/
| | | implements axb.axb/*02000006*/
| | | implements axb.axbSource_Event/*02000005*/
| | | .custom /*0C00000F:0A000008*/ instance void [mscorlib/*23000001*/]System.Runtime.InteropServices.ClassInterfaceAttribute/*0100000A*/::.ctor(int16) /* 0A000008 */ = ( 01 00 00 00 00 00 ) ...
| | | .custom /*0C000010:0A000009*/ instance void [mscorlib/*23000001*/]System.Runtime.InteropServices.ComSourceInterfacesAttribute/*0100000B*/::.ctor(string) /* 0A000009 */ = ( 01 00 0F 61 78 62 2E 61 78 62 53 6F 75 72 63 65 // ...axb.axbSource ...
| | | .custom /*0C000011:0A000001*/ instance void [mscorlib/*23000001*/]System.Runtime.InteropServices.GuidAttribute/*01000002*/::.ctor(string) /* 0A000001 */ = ( 01 00 24 43 44 42 46 36 42 33 33 2D 45 32 33 46 // ..$CDBF6B33-E23F ...
| | | .custom /*0C000012:0A000002*/ instance void [mscorlib/*23000001*/]System.Runtime.InteropServices.TypeLibTypeAttribute/*01000003*/::.ctor(int16) /* 0A000002 */ = ( 01 00 02 00 00 00 ) ...
| | |___[MET] method .ctor : void()
| | |___[MET] method equals : bool(object)
| | |___[MET] method getClass : object()
| | |___[MET] method get_axb_Handle : int32()
| | |___[MET] method hashCode : int32()
| | |___[MET] method notify : void()
| | |___[MET] method notifyAll : void()
| | |___[MET] method toString : string()
| | |___[MET] method wait : object(object,object)
AccessViolationException exception
System.AccessViolationException was unhandled
Message=Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
Source=mscorlib
StackTrace:
at System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck)
at System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache)
at System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean skipCheckThis, Boolean fillCache)
at System.Activator.CreateInstance(Type type, Boolean nonPublic)
at System.Activator.CreateInstance(Type type)
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at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(ApplicationContext context)
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun()
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel()
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[] commandLine)
at WindowsApplication1.My.MyApplication.Main(String[] Args) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 81
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
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In case you haven't figured it out already... Or if anyone else is curious... Or for myself when I get old and forgetful...
h2. Object Creation
For starters, when you create an ActiveX object from within VB, use:
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h4. Invalid:
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at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.inqmy.services.servlets_jsp.server.InvokerServlet.service(InvokerServlet.java:126)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.inqmy.services.servlets_jsp.server.RunServlet.runSerlvet(RunServlet.java:149)
at com.inqmy.services.servlets_jsp.server.ServletsAndJspImpl.startServlet(ServletsAndJspImpl.java:832)
at com.inqmy.services.httpserver.server.RequestAnalizer.checkFilename(RequestAnalizer.java:666)
at com.inqmy.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:313)
at com.inqmy.services.httpserver.server.Response.handle(Response.java:173)
at com.inqmy.services.httpserver.server.HttpServerFrame.request(HttpServerFrame.java:1288)
at com.inqmy.core.service.context.container.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:36)
at com.inqmy.core.cluster.impl5.ParserRunner.run(ParserRunner.java:55)
at com.inqmy.core.thread.impl0.ActionObject.run(ActionObject.java:46)
at java.security.AccessController.doPrivileged(Native Method)
at com.inqmy.core.thread.impl0.SingleThread.run(SingleThread.java:148)

Hi Michael,
here my comments to your questions:
0.:[Michael says:]
"So basically you're saying that under SP10 its not possible to store objects on the PCD ... ?"
I want to clarify this:
It is possible to store objects in the PCD in lower releases than SP10 (e.g. SP2). But due to the fact that PCD API is not public before SP10 you should not develop a SP2 iView that programmatically uses the PCD API and complain afterwards because some "tiny" things of it are not working in SP10. It might be that you have to adjust some parts of this SP2 iView.
The kind of object that can be stored in the PCD depends on the fact if the objects have a corresponding object provider or not. If you want to store iViews, roles or one of the other commonly known portal objects you can do it because corresponding object provider (iViewservice, roleservice, etc.) are always available in a running portal.
If you want to store objects (like your BeanWrapper class) then you should write a corresponding object provider (what I explained in my first reply).
1.:[Michael asked:]
Why does list and listBindings fail ? surely that should just
list the existing bound objects ???
Nothing was bound!
Your code line
applicationContext.rebind("PCD_LOOKUP_KEY", d);
throws a NamingException because no object provider for class of object d was found.
So I gess you did a lookup on applicationContext.lookup( "PCD_LOOKUP_KEY" ) before you did the list/listBindings and because this
context does not exist the corresponding "Name not found" exception was thrown?
A list/listBinding on the applicationContext itself should work even if nothing was bound.
2.:[Michael asked:]
Is there not some kind of default object/object provider pair
that can be used to store base types like Strings/Integers etc ?
No. There are no default object providers for java string/integers. But for this case "persisting a string or integer value at any PCD context" the PCD offers another way to do it: Just create an additional attribute (of type STRING or INT) and persist the corresponding value in this attribute (of type IPcdAttribute - an extension of javax.naming.directory.Attribute )
The code for creating a pcd attribute looks e.g. like this:
IPcdObjectFactory pcdObjFactory = ((IPcdGlService) PortalRuntime
                                               .getRuntimeResources()
                                               .getService(IPcdGlService.KEY))
                                               .getPcdObjectFactory();
IPcdAttribute newPcdAttr = pcdObjFactory.createPcdAttribute(     PcdAttributeValueType.STRING,
                                        "new_attrId" );
newPcdAttr.set(     0,
          "new_AttrValue" );
ModificationItem mods[] = new ModificationItem[1];
mods[0] = new ModificationItem(      DirContext.REPLACE_ATTRIBUTE,
                           (Attribute)newPcdAttr );
pcdCtx.modifyAttributes(     "",
                    mods );
Hope, that helps you!
Regards,
Jens

Calling foreign EJB server from Weblogic

Hi,
I'm trying to invoke an EJB hosted in an old PowerTier EJB Container from an 8.1 SP5 hosted EJB, and I'm running in to problems. (PowerTier is based on the JBroker ORB)
So far the only way I can get it to work is by replacing Weblogic's ORB implementation with the JBroker one:
-Djavax.rmi.CORBA.StubClass=com.sssw.jbroker.rmi.StubDelegate
-Djavax.rmi.CORBA.UtilClass=com.sssw.jbroker.rmi.UtilDelegate
-Djavax.rmi.CORBA.PortableRemoteObjectClass=com.sssw.jbroker.rmi.PortableRemoteObjectDelegate
But I'd like to avoid doing this if possible.
So I'd like to get this to work using the WL RMI-IIOP implementation to integrate with the PowerTier/JBroker server.
After looking at : http://forums.bea.com/bea/message.jspa?messageID=202437541&tstart=0
I tried the following:
Properties config = new Properties();
config.setProperty(
Context.PROVIDER_URL, "<b>iiop</b>://xxx.xxx.xxxxx.xxx:389/cn=Instance1,ou=Development,cn=Xxxx%20Xxxxxxx%20Xxxxx,ou=Components,cn=Xxxxxx%20Xxxx,ou=Applications,o=xxxxxxxx,c=uk");
InitialContext context = new InitialContext(config);
URL changed to protect the innocent - but format maintained.
When the server executes this I get the following exception:
javax.naming.InvalidNameException: url does not contain a port
at weblogic.corba.j2ee.naming.NameParser.parseURL(NameParser.java:419)
at weblogic.corba.j2ee.naming.ORBHelper.parseURL(ORBHelper.java:533)
at weblogic.corba.j2ee.naming.ORBHelper.getORBReference(ORBHelper.java:440)
at weblogic.corba.j2ee.naming.InitialContextFactoryImpl.getInitialContext(InitialContextFactoryImpl.java:97)
at weblogic.corba.j2ee.naming.InitialContextFactoryImpl.getInitialContext(InitialContextFactoryImpl.java:42)
at weblogic.jndi.WLInitialContextFactory.getInitialContext(WLInitialContextFactory.java:135)
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:662)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:243)
at javax.naming.InitialContext.init(InitialContext.java:219)
at javax.naming.InitialContext.<init>(InitialContext.java:195)
Any idea what is causing this exception? If I replace the '%20' with a normal spaces it makes no difference.
Am I going about this the right way?
Thanks!

Getting a bit closer now.
The Object retreived from LDAP was a javax.naming.Reference - which contains the IOR for the Home interface.
// Get IOR from LDAP
InitialContext context;
Hashtable config = new Hashtable();
config.put(Context.PROVIDER_URL,"ldap://<host>:389/");
config.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
context = new InitialContext(config);
Reference reference = (Reference)context.lookup("<path to home>");
// Get IOR from reference
String ior = "" + reference.get(0).getContent();
// Get WLS ORB
ORB orb = (ORB)new InitialContext().lookup("java:comp/ORB");
Object object = orb.string_to_object(ior);
FooHome home = (FooHome)PortableRemoteObject.narrow(object, FooHome.class);
Foo foo = home.create();
// Everything works fine up to here.
foo.invokeMethod(); // <-- This fails with the following exception :
java.rmi.RemoteException: ; nested exception is:
org.omg.CORBA.BAD_OPERATION: vmcid: 0x0 minor code: 0 completed: No
at weblogic.iiop.OutboundRequestImpl.sendReceive(OutboundRequestImpl.java:197)
at weblogic.iiop.IIOPRemoteRef.invokeInternal(IIOPRemoteRef.java:205)
at weblogic.iiop.IIOPRemoteRef.invoke(IIOPRemoteRef.java:153)
at ztkt.pl.Foo_IIOP_WLStub.invokeMethod(Unknown Source)
at com.xyz.ezs.wl.ejb.PLProxyBean.invoke(PLProxyBean.java:56)
at com.xyz.ezs.wl.ejb.PLProxy_o3b3ao_EOImpl.invoke(PLProxy_o3b3ao_EOImpl.java:45)
at com.xyz.ezs.wl.ejb.PLProxy_o3b3ao_EOImpl_WLSkel.invoke(Unknown Source)
at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:492)
at weblogic.rmi.cluster.ReplicaAwareServerRef.invoke(ReplicaAwareServerRef.java:108)
at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:435)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:147)
at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:430)
at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteRequest.java:35)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:224)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:183)
Caused by: org.omg.CORBA.BAD_OPERATION: vmcid: 0x0 minor code: 0 completed: No
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:274)
at java.lang.Class.newInstance0(Class.java:306)
at java.lang.Class.newInstance(Class.java:259)
at weblogic.iiop.ReplyMessage.getThrowable(ReplyMessage.java:337)
at weblogic.iiop.InboundResponseImpl.getThrowable(InboundResponseImpl.java:62)
at weblogic.iiop.OutboundRequestImpl.sendReceive(OutboundRequestImpl.java:179)
... 15 more
(Method, class and package names changed.)
Has anyone seen this before? Any idea what might be causing it?

Error while loading javaGUI from BSP via Applet

Hello Folks,
i saw an interesting Thread by Thomas Jung (SAP) how to starting a R/3 Transaction via javaGUI from a Business Server Page. I did the same steps but get an Java Error while loading the applet. Can anyone help me?
The error listed in the JavaConsole is:
java.security.AccessControlException: access denied (java.util.PropertyPermission com.sap.platin.productType read)
     at java.security.AccessControlContext.checkPermission(Unknown Source)
     at java.security.AccessController.checkPermission(Unknown Source)
     at java.lang.SecurityManager.checkPermission(Unknown Source)
     at java.lang.SecurityManager.checkPropertyAccess(Unknown Source)
     at java.lang.System.getProperty(Unknown Source)
     at com.sap.platin.micro.Version.guessVersionType(Version.java:230)
     at com.sap.platin.GuiAppletBase2.findProductType(GuiAppletBase2.java:324)
     at com.sap.platin.GuiApplet2.getProductType(GuiApplet2.java:18)
     at com.sap.platin.GuiAppletBase2.<init>(GuiAppletBase2.java:54)
     at com.sap.platin.GuiApplet2.<init>(GuiApplet2.java:14)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
     at java.lang.reflect.Constructor.newInstance(Unknown Source)
     at java.lang.Class.newInstance0(Unknown Source)
     at java.lang.Class.newInstance(Unknown Source)
     at sun.applet.AppletPanel.createApplet(Unknown Source)
     at sun.plugin.AppletViewer.createApplet(Unknown Source)
     at sun.applet.AppletPanel.runLoader(Unknown Source)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
All Jar-Libraries are imported in the Application Mime-Repository...and regardless the JavaGUI is installed on my local host or not, i get the same error...
Thanks in advance for your help,
Christian Kremer

Hi,
You can check the below forums.
DTP with error RSBK257
- Jaimin

Java EJB client "Can't connect to ORB" errors...

I'm writing an application that is a Java EJB client application (no web
stuff at all). Needless to say there are no examples of such an app in
the samples dir, they are all web-based.
My problem is that when I try to run my application (client calls a
stateless session bean on the server and gets a "hello world" string
back) I get a "Could not create the TestService bean:
javax.naming.CommunicationException: Cannot connect to ORB [Root
exception is org.omg.CORBA.COMM_FAILURE: minor code: 1 completed:
Maybe]" error.
This is a very simple test, and I'm getting quite frustrated in trying
to figure out what's actually wrong.
Here's the client code (the bean on the server has been deployed into a
module called achptestEjb, the bean name is TestService)
TestService service = null;
TestServiceHome home=null;
String host = "localhost";
String port = "12345";
try {
Properties env = new Properties();
Context context=null;
String jndiName="ejb/achptestEjb/TestService";
System.out.println("JNDI name is "+jndiName);
env.put
("java.naming.factory.initial","com.sun.jndi.cosnaming.CNCtxFactory");
env.put("java.naming.provider.url", "iiop://"+host+":"+port);
context = new InitialContext(env);
The error comes when the new InitialContext is set with the properties
in the env object.
Any ideas what I'm doing wrong?
It would be a BIG help if iPlanet included one simple pure EJB client
example. There are some of us out here who feel HTML is too limiting
for complicated applications.
Douglas Bullard

I finally found the answer to my problem.... in the Ant script I had
copied from another example, the "-iiop" was lacking in the ejbc
arguments - almost all of the examples assume you'll be calling EJBs
from within the container, instead of a stand-alone client, so they
don't use that flag.
Putting that "-iiop" flag into the ejbc arguments fixed everything.
Thanks, Shivani, for pointing out what is now obvious but was
mysterious.
Douglas Bullard
In article <[email protected]>,
[email protected] says...
I'm writing an application that is a Java EJB client application (no web
stuff at all). Needless to say there are no examples of such an app in
the samples dir, they are all web-based.
My problem is that when I try to run my application (client calls a
stateless session bean on the server and gets a "hello world" string
back) I get a "Could not create the TestService bean:
javax.naming.CommunicationException: Cannot connect to ORB [Root
exception is org.omg.CORBA.COMM_FAILURE: minor code: 1 completed:
Maybe]" error.
This is a very simple test, and I'm getting quite frustrated in trying
to figure out what's actually wrong.
Here's the client code (the bean on the server has been deployed into a
module called achptestEjb, the bean name is TestService)
TestService service = null;
TestServiceHome home=null;
String host = "localhost";
String port = "12345";
try {
Properties env = new Properties();
Context context=null;
String jndiName="ejb/achptestEjb/TestService";
System.out.println("JNDI name is "+jndiName);
env.put
("java.naming.factory.initial","com.sun.jndi.cosnaming.CNCtxFactory");
env.put("java.naming.provider.url", "iiop://"+host+":"+port);
context = new InitialContext(env);
The error comes when the new InitialContext is set with the properties
in the env object.
Any ideas what I'm doing wrong?
It would be a BIG help if iPlanet included one simple pure EJB client
example. There are some of us out here who feel HTML is too limiting
for complicated applications.
Douglas Bullard

J2ee cas com bridge help

Hi,
I need documentation about j2ee cas com bridge. I know that is not still supported but I have to mantain a software that was developed in vb6 using .class files. I have to check something but I haven't the documentation. Does someone knows where I can find it?
Thanks
Valy

There is now an IBM product available for free download.
See http://www.alphaworks.ibm.com/tech/dtjcb?open&S_TACT=104AHW61&S_CMP=GR&ca=dgr-eclpsw02awdtjcb
I have been trying today to investigate migrating from CASCOM to this product. It appears to have the facilities I need (i.e. COM client to Java Server) but I'm having trouble trying to 'match' the two products.
CASCOM can generate TLB files for use by the COM application direct from the Java class, whereas it appears that you have to provide IDL definitions for all Interfaces from scratch, and then convert them to TLBs using 'midl'. Anyone been through a migration already who could share their experiences??
Thanks
Steve Waters

How drive ejb beans from such as COMPANY with..

I am very new to EJBs but would like to give a try and dooooooooooooo it of course. Now, I understnad how to write jave(ejb interfaces and classes) but makes me small is how define ejb beans from my bosses speach. He says we need to ....... so for example COMPANY(company name, contact, references + more) could be our business objects. HAH!
So pmy roblem is what should be an ejb bean and what should be ejb bean fields.
Thanks a lot in advance.
gapter

Its really not that difficult really. First - if you decide that your business object is going to be a Bean - Determine if it should be an EJB or just a regular Java Object bean in which case you'll probaly just use a Java Bean. The two are very similar with the exception that JB's are not Distributed but can do most of the grunge work that an EJB is suppose to do.
Next, determine what business methods or transactions are most likely to be done to your Business Object. This should determines the interface. So far that's all routine.
If you are decide that an EJB is what your problem demands (after much research into your problem) - then ask if your business object will be persistent (exist for a long time and will need storage (say on a persistent storage media like in a database) Or whether it will just require session scope (or just to be present the duration of a transaction/session - like say a shopping cart). The former requires a Entity Bean, the latter a Session Bean.
You then create your implementation code in a NameOfClassEJB class. A Container Management class NameOfClassHOME, and of course your Business Method Interface called NameOfClass.
The BMI (business method Interface class) is trivial. Your EJB class however will contain all the implementation required to get work done depending on the choice of Implementation - that is, whether you wish to handle all transactions (Bean Managed) or if you would rather delegate to the Container to handle Storage Issues (Container Managed). With Container Management - You get a lot for free - like concurrency control, database connectivity is trivial, distributed transaction management is trivial, field updates in your database is totally out of your hands. etc ...
For a beginner - its better if you take time to study the ejb lifecycle, the J2EE Business Architecture, then the solution that they proposed for application development. This is not trivial and has a steep learning curve.
Have fun.
Next determine if you want to handle all of the transactions between the properties (or fields) in the bean or you'd like the Application Server's Container to do this for you. (Most EJB's at least the simple ones are better off being handled by the Container).
going to be an employee: say with name, address, tel, email: Y

Java EJB's from VB via CAS COM

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