Maintaing state with ejb web services

Hello,
I understand there are no straight way to maintain state with ejb web services. Basically I have a stateful session bean and I would like to maintain state across requests. What is the best/cleanest architecture I can use in order to maintain state with web services?
Any reply appreciated,
Julien.

Here's how BEA suggests you do it:
http://e-docs.bea.com/wls/docs81/webserv/design.html#1058330

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I will create a schema with input as (username,password,group) and Output as (isAuthenticated ,isGroupMember).
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How to Use SOAPArray to Exchanged Data with a Web Service

The method of a prototype Web service I created is defined to take many parameters
and return an object of a user defined class. Furthermore, the user defined class
includes data elements of another user defined class and the Java ArrayList class.
This works with a Java client referencing the WebLogic created client.jar file
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Replies in-line:
How are the structures, e.g. gltrans-workType, defined in the Web service?The structure is made up of nested Java Beans, but this does not mean that the
client for your web service has to be written in Java. The WSDL that I sent contains
everything that a .NET-based (or Perl-based, or Python-based, or VB-based, or
C++ based) Web Service Stack needs to correctly create all the data types in the
web services' signature! That's the beauty of XML Schema! It's programming language
independent :-)
In
other words, what definition in Java resulted in the WSDL statements?The WSDL wasn't produced by WLS 6.1, but it (WLS 6.1) can consume it.
What is the signature of method submitGLTransWorkAsJavaBean() in the
Web service?public void submitGLTransWorkAsJavaBean(GlTransactionsCpyType glTransactionsCpyType)
GlTransactionsCpyType is the outer-most Java Bean. WLS 6.1 does not generate
Java Beans for you, but it will use ones that you defined. See the Java Bean tutorial
on the Javasoft sitem for details on how to create a Java Bean.
Was the WSDL generated using the WL tools for creating a Web service?No.
Conclusion:
You asked for someone to provide you with an example of how to use SOAP array
in a WSDL, which is what the attached file contained :-) What you want to do now
is find a tool that can generate Java Bean code from this WSDL (Apache Axis has
a wsdl2java tool that should work), or create the Java Beans yourself. Afterwards,
create a WLS 6.1 Web Service a expose it for a Perl or .NET client.
Regards,
Mike Wooten
"Jeff Carey" <[email protected]> wrote:
>
Please elaborate.
How are the structures, e.g. gltrans-workType, defined in the Web service?
In
other words, what definition in Java resulted in the WSDL statements?
What is the signature of method submitGLTransWorkAsJavaBean() in the
Web service?
Was the WSDL generated using the WL tools for creating a Web service?
Thank you.
"Michael Wooten" <[email protected]> wrote:
Hi Jeff,
Sounds like a pretty cool prototype :-)
I have attached a WSDL (at the bottom of this post) that contains a<schema>
that
uses a SOAPArray to create an array of a <complexType>.
HTH,
Mike Wooten
"Jeff Carey" <[email protected]> wrote:
The method of a prototype Web service I created is defined to take
many
parameters
and return an object of a user defined class. Furthermore, the user
defined class
includes data elements of another user defined class and the Java ArrayList
class.
This works with a Java client referencing the WebLogic created client.jar
file
but I don't know how well it will work with a non-Java client. Inparticular,
with Perl which is the language that will be used by the developerwho
first will
test with the prototype.
In posts to this newsgroup use of "language-specific, generic containers"
has
been discouraged and the "language-agnostic" SOAPArray recommended.
I have searched
this newgsroup and the Web for examples of how to use a SOAPArray in
a Web service
EJB to receive parameters and return results but found none.
Will someone refer me to an example or give an overview of how a Java
Web service
EJB running in WebLogic 6.1 would use SOAPArray to get parameter values
and return
results?
Also, I would like confirmation that it is best to use SOAPArray toexchange
data
with a Web service to achieve the goal of a service accessible by any
language.
Thank you.

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Hello,
Could you send me you source and ear at: tugdual[dot]grall[at]oracle[dot]com
Regards
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How to access application state from stateless web service?

I have a beginner J2EE question. After reading through J2EE tutorial, I still don't know how to create an application that would run on J2EE server, and which would have a web service interface to other world, and which would have several threads running, which would connect to other enterprise applications via TCP? Because if I understand it correctly, web service requires a stateless session bean, which means that it can't access any stateleful session bean (except always create one and remove it instantly). So there seems to be no way to store application state and have running threads.
I'm asking this because .NET seems to have a very simple Application dictionary, which can save all application objects, including threads, and it is very easy to access this Application state from a stateless web service. Isn't there any similar functionality in J2EE? And if not, how it should be done in Java world then?
I guess that the Connector architecture could be the solution, but it is not documented in the tutorial.

There's nothing in the J2EE spec that says that you have to use Web Services. Web Services by definition are stateless.
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That said, you can use a hybrid. You can expose some of the functionality of your application as Web Services while the remaining is implemented in a classic J2EE type framework that is stateful.
I would also think that you could store your application state via entity beans. You could save and load them when the web service is accessed. An entity bean doesn't require a database... just some form of persistence (could be an XML file for instance).
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EJB Web Services Exception: missing field/property

Hello
I am having trouble creating EJB Web Services.
When i send the following XML-content:
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<SOAP-ENV:Body>
    <yq1:create xmlns:yq1="http://company.com/project/beans/local/">
      <firstName>q</firstName>
      <lastName>s</lastName>
      <email>d</email>
      <userName>f</userName>
      <password>g</password>
    </yq1:create>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
I receive this response:
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<SOAP-ENV:Body>
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      <detail>
        <yq1:com.sap.engine.services.webservices.espbase.server.additions.exceptions.ProcessException xmlns:yq1="http://sap-j2ee-engine/client-runtime-error">
          
        </yq1:com.sap.engine.services.webservices.espbase.server.additions.exceptions.ProcessException>
      </detail>
    </SOAP-ENV:Fault>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
This is the code to my EJB and the interface:
@WebService(endpointInterface="com.company.project.beans.local.PersonLocal", portName="PersonBeanPort", targetNamespace="http://company.com/project/beans/local/", serviceName="PersonService")
@Stateless
public class PersonBean implements PersonLocal {
     @PersistenceContext
     private EntityManager em;
     public void createAsObject(Person person) {
          em.persist(person);
     public void create(String firstName, String lastName, String email, String userName, String password) {
          Person person = new Person(firstName, lastName, email, userName, password);
          createAsObject(person);
@WebService(targetNamespace="http://company.com/project/beans/local/", name="PersonLocal")
@Local
public interface PersonLocal {
     @WebMethod(operationName="createAsObject")
     public void createAsObject(@WebParam(name="person")
     Person person);
     @WebMethod(operationName="create")
     public void create(@WebParam(name="firstName")
     String firstName, @WebParam(name="lastName")
     String lastName, @WebParam(name="email")
     String email, @WebParam(name="userName")
     String userName, @WebParam(name="password")
     String password);
Do you have any advice on how to resolve this problem?
Thanks in advance
Vincent

Hi,
in case you want some specific text,you can raise the exception like this in your function module.
MESSAGE I001(ZPLATINO) RAISING EXCEPT1.
message class: ZPLATINO
exception        : EXCEPT1
message no 001,
message text : CHECK ERROR PUSHKAR1
and your response will be like.:
<soap-env:Envelope xmlns:soap-env="http://schemas.xmlsoap.org/soap/envelope/">
     <soap-env:Body>
          <soap-env:Fault>
               <faultcode>soap-env:Client</faultcode>
               <faultstring xml:lang="en">EXCEPT1</faultstring>
               <detail>
                    <n0:Zpl.Exception xmlns:n0="urn:sap-com:document:sap:soap:functions:mc-style">
                         <Name>EXCEPT1</Name>
                         <Text>CHECK ERROR PUSHKAR1</Text>
                         <Message>
                              <ID>ZPLATINO</ID>
                              <Number>001</Number>
                         </Message>
                    </n0:Zpl.Exception>
               </detail>
          </soap-env:Fault>
     </soap-env:Body>
</soap-env:Envelope>
I think this solves your problem.
points..points..:)
Message was edited by:
        pushkar anand

Need help in EJB Web Services

I have been programming an EJB Web Service. I programmed the EJB and I have programmed the Client. It works properly when I execute it in the command line.
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I have been programming an EJB Web Service. I programmed the EJB and I have programmed the Client. It works properly when I execute it in the command line.
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If I am not wrong, you might be probably talking about this :
http://docs.oracle.com/cd/B40099_02/books/EAI2/EAI2_WebServices33.html#wp179056
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I think, this should get you going..

Problem generating stubs for Java EJB web service deployed in OAS

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Problem generating stubs for Java EJB web service deployed in OAS

Best practice for integrating oracle atg with external web service

Hi All
What is the best practice for integrating oracle atg with external web service? Is it using integration repository or calling the web service directly from the java class using a WS client?
With Thanks & Regards
Abhishek

Using Integration Repository might cause performance overhead based on the operation you are doing, I have never used Integration Repository for 3rd Party integration therefore I am not able to make any comment on this.
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Cheers
R
Edited by: Rajeev_R on Apr 29, 2013 3:49 AM

How to add image in ejb web service

Hello Community,
I am writing web service to create a PDF file using itext API. In PDF file i want to add an image.
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Thanks in advance
Regards,
Dishant Chawla

Hi,
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header_pdf.disableBorderSide(0);
header_pdf.setAlignment(Element.ALIGN_CENTER);
header_pdf.setBorder(0);
document.setHeader(header_pdf);
(or)
Adding Image a Element:
httpServletRequest = request.getServletRequest();
domainURL=httpServletRequest.getScheme()+"://"+httpServletRequest.getServerName();
imgLogo=domainURL+request.getWebResourcePath()+"/images/XXXX.jpg";
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document.add(image);
Java IText: Image | tutorials.jenkov.com
Regards,
Srinivasan V

Maintaing state with ejb web services

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