EJB"s as webservices

Hi,
we are supposed to build an service from scratch using web services. so i suggested, to build the service using ejb3 and then deploy it as a web service. But now few questions are pondering me:
1) If ejb has some hashmap and hashtable datatype in it, then how error prone will they be when converted in wsdl file
(web services).
2) There are frequent data exchange in the services... So performance wise, how good decision will it be to implement ejb as webservices..

Hi,
The recompilation of EJB may be triggered by a lot of reasons. But appc should help on reduce of recompilation when deployment. If appc didn't help, that would be a bug.
Could you please send me your application? Is it a very large file?
My email addr: [email protected]
Edited by yyang at 12/25/2007 6:21 PM

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Are there any naming conventions a generator of EJB-Code should follow if the generated JAR file is used as input for servicegen afterwards?
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>
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Hi lerppu
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Hi,
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Message was edited by:
guyh

Hi Jitu,
I changed the wsdl. And so I don�t get the warning anymore. My Webservice also runs well, now. Thanks anyway for the reply.
There is a nice tech article on the sun network, which solved my problem. The basic idea is to split the wsdl into 2 wsdl documents. one containing all the porttypes messages and so on. And the other wsdl contains the binding and service elements.
If you are interested check out this link:
http://java.sun.com/developer/technicalArticles/xml/jaxrpcpatterns/index2.html
thanks,
footman

Sending Email from EJB exposed as Webservice

Hi,
I have created a EJB, which i have wrapped in an EAR & exposed as a WebService.
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Regards,
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Hi,
Thanx for the prompt response.
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Authentication when Exposing EJB as a webservice

Hello,
can anybody advice me on how to expose a webservice for an ejb on the CE plattform, that requires authentication from the consumer.
In earlier EJB EP7 implementation I had the possiblity to work with the webservice configuration and define it in the security section.
This feature I miss, when I use @webservice annotation?
Thanks in advance.
Regards, Jens

got it...
if you run into the same problem,here's the solution
go to nwa --> configuration management --> infrastructure and then to the
webservice configuration section...
the rest is straight forward.
best regards, Jens

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A similar bug was reported earlier and it was fixed in SJSAS9.1-b15. Is there a possibility for you to try with some NB5.5 build that has a later AS9.1build ?

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Hi,
I have implemented a stateless Session EJB with a @WebService Annotation. The EJB Modul can be deployed on a Glassfish Server with out errors.
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     Truncated. see log file for complete stacktrace
>
<23.10.2007 15.03 Uhr GMT+01:00> <Error> <Deployer> <BEA-149265> <Failure occurred in the execution of deployment request with ID '1193148199315' for task '35'. Error is: 'weblogic.application.ModuleException: Exception activating module: EJBModule(BEA_Test1.jar)
Unable to deploy EJB: WorkflowManagerImplementation from BEA_Test1.jar:
My code dose not include a Class
org.imixs.workflow.jee.ejb.jaxws.GetEnvironmentList
nor the package org.imixs.workflow.jee.ejb.jaxws
Can anybody help me or give me a hint what this error message means?
Thanks a lot
Ralph

Hi, Rick
Thanks for your help.
I deleted de application-client.xml file, added the following lines to the web.xml file:
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and now I´m using oracle.j2ee.rmi.RMIInitialContextFactory
there is no error, and it doesn´t throw any exception but the following line returns null.
SessionEJB sessionEJB = (SessionEJB)context.lookup("java:comp/env/ejb/SessionEJB");
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Mauricio.

Ejb webservice..wsdl file

hi all,
i have created a product table in the database and then i created an entity product class from the table,
after that i created session bean and publish this session bean as a web service.
During creating session bean --> i chose Business tier00--> session bean --> include Web Service Endpoint Interface-->
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After adding anotation @WebMethod for an operation (selectAll) in order to select product table.
i deployed this web service on oracle application server. it was sucessful and i tested this web service . it returned the product data that i expected.
1. However, i can not find WSDL file in the directory that i created.
2. i can only see wsdl file from my address location on (Explorer)
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please help

Hi Ashutosh,
I am not using web dynpro. I am using EJB for consuming webservice. Now, in visual admin I stopped Web service security service and again started it again
Now its giving me following error:
<b>java.lang.Exception: Call to {remote server url} returned http code 500 with unacceptable content type (text/html).
<HTML>
<HEAD><TITLE>500 Server Error</TITLE></HEAD>
<BODY>
<H1>Server Error</H1>
<H4>
The following error occurred:<P>
[code=SERVER_RESPONSE_CLOSE] The server closed the connection while reading the response. Contact your system administrator.
</H4>
<HR>
Please contact the administrator.
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Webservices for EJB How to go about it

HI
Here is my situation please advice me how to go about it...
I have to expose EJB as a webservices...That EJB is already packed in jar file it has nearly 20 methods or so and the application server that i need to use is weblogic....The problem is many of the methods return java.util.Map and java.util.Collection...and the contents of the all the Maps are not of the same type all the time i mean if Method1 returns Map whose key is String and Values is user defined data type (for instance dataType1)...Method2 also returns a Map whose key is a String and values is another User Defined data type(for instance dataType2)..
I tried with weblogic servicegen and WSEE 109 manually building it but that did not work out....Right now my idea is to write wrapper class which has all the 20 methods but return user defined data type(which i have to write).Internally each method will be calling the corresponding method in EJB..If this is the case for each method i have to create different User defined data type....Is this feasible or is there better way of doing it....
Thanks for sparing some time to go through my problem

This question is also posted in the BEA forums, I've replied to it here: http://forums.bea.com/bea/thread.jspa?threadID=600004366&tstart=0
-Tim West

How to inject EntityManager in non-EJB based WebService?

Hi,
I want to know how we can inject EntityManager in non-EJB based WebService?
Regards,
imran

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Does Webservices support Statefull EJBs?

Hi all,
My questions are
1.Is it possible to implement stateful EJB'S using webservices?
2. is it possible to identify dynamically the webservices in a distributed environment.
i mean is it possible for the server to identify at runtime that the webservice is
local or remotely located? is this a standard way for identification or vendor specific?
In concurrance does it make any difference in performance by accessing webservices
from remote or localhost?
would be delighted to have some insight and some documentation regarding it.
thanx in advance!
regards

Hi Arif,
You can use a conversational web service to maintain the conversational
state of client across multiple calls, just like a stateful session EJB does
for a web/java client. However, please don't confuse this with using a
stateful session EJB from within a web service using an EJBControl. The
state maintained by a stateful session EJB invoked through a web service,
does not span across multiple client calls to the web service. Hence, even
though your web service might be using a stateful session EJB behind the
scenes, the state of the client should be maintained in the web service
itself, and not in the stateful session bean.
Regarding your question about the performance implications of having a local
webservice as compared to a remote one, as of now we do not do any
shortcircuiting of the calls to a local service. However, you obviously
would still see a better performance while using a local service as compared
to a remote service, due to the network overheads and latency.
Regards,
Anurag Pareek
WebLogic Workshop Support
"arif" <[email protected]> wrote in message
news:[email protected]..
>
Hi all,
My questions are
1.Is it possible to implement stateful EJB'S using webservices?
2. is it possible to identify dynamically the webservices in a distributedenvironment.
i mean is it possible for the server to identify at runtime that thewebservice is
local or remotely located? is this a standard way for identification orvendor specific?
>
In concurrance does it make any difference in performance by accessingwebservices
from remote or localhost?
would be delighted to have some insight and some documentation regardingit.
>
thanx in advance!
regards

Webservice for EJB DC

I'm trying to create a webservice for an EJB with the Webservice Creation Wizard of NDS. While this is no problem for an "old fashioned" EJB, it does not seem to work for an EJB DC. The context menu "New -> Virtual Interface / Webservice" appears, just as described in the <a href="http://help.sap.com/saphelp_nw04s/helpdata/de/f7/af60f2e04d0848888675a800623a81/frameset.htm">Java Development Manual</a>, but nothing happenes when I select one of this options. No error message, no dialog, nothing...
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Hi,
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WS_PagamentoVisa model = new WS_PagamentoVisa();
wdContext.nodeRequest_PedidoAutorizacao().bind(new Request_PedidoAutorizacao(model));
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wdContext.nodePedidoAutorizacao().bind(input);
input.setRefPagamento("12321321323");
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I believe the input is not well formed in my code, but i can't understand where's the problem.
Can anyone help me, please?
Thanks in advanced,
Luis

Hi,
Assuming you context to be..
Context
--Request_PedidoAutorizacao (node)
PedidoAutorizacao (node)
RefPagamento (attribute)
<i>You are invalidating Request_PedidoAutorizacao which is your main node.This node contians subnode PedidoAutorizacao</i>
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// try the following
WS_PagamentoVisa model = new WS_PagamentoVisa();
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Error while importing EJB model in Web dynpro: Unable to fetch the EJBs.

Hi,
We are getting the below error while importing ejb model to Web dynpro.
Error :
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Best Regards,
Karthika

Hi Vishweshwara,
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Please find the steps i followed while importing EJB model in webdynpro.
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I could be able to invoke the ejb service beans from ejb explorer and Webservice navigator.
I am able to insert,delete and modify the records from there.
Please let me know what could i do to resolve this error?
Best Regards,
Karthika
Edited by: SAKarthika on Apr 29, 2011 1:43 PM

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<web-services>
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</stateless-ejb>
</components>
<operations>
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I cannot figure out what WL is upset about.
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I really appreciate any help or advice.
Thanks,
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Using <autotype> and <source2wsdd> to generate what I need. Now WL seems happy.

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