Connect to BAPI with web service

Hi everyone,
I am trying to make a web service that call a BAPI and retrieve a result (a table or a structure).
Is it possible ? If yes, how ?
Thanks a lot.

So,
1st step : create a SAP enterprise connector.
2nd step : create a portal service ?
3th step : create a web service.
4th step : create a proxy and a client.
           In the client, for the example, I wrote :
          JCO.Client jcoclient =
                  JCO.createClient(
                     "CLIENT",
                     "USER",
                     "PASSWORD",
                     "LANGUAGE",
                     "SERVER",
                     "SYSTEM",
                     "GROUP");
          jcoclient.connect();
It doesn't work. I get this exception :
com.sap.mw.jco.JCO$Exception: (102)
RFC_ERROR_COMMUNICATION: Connect to message server failed
Is it right ?
Thanks for the help.
Message was edited by: David Fryda

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Problem with web service proxy and connections.xml

JDev 11.1.14
Hello
I'm trying to create a web service proxy that takes advantage of the connections.xml so that the endpoints can be changed without recompiling the code (as described here http://download.oracle.com/docs/cd/E17904_01/web.1111/b31974/web_services.htm#ADFFD548 - 13.2.2 How to Create a New Web Service Connection)
I created the web service proxy using the Jdev wizard and a test client. The access to the web service works as expected.
The client test code is :
package model;
import ch.mit.trac.ws.proxy.*;
import ch.mit.trac.ws.root.Currency;
import javax.naming.NamingException;
public class wsTest {
public wsTest() {
    super();
public void testIt() throws NamingException {
    CurrencyConvertor currencyConvertor = new CurrencyConvertor();
    CurrencyConvertorSoap currencyConvertorSoap = currencyConvertor.getCurrencyConvertorSoap();
    Double res = currencyConvertorSoap.conversionRate(Currency.CHF, Currency.USD);
    System.out.println("Hello");
    System.out.println(res);
public static void main(String [] args) throws NamingException {
    wsTest tt = new wsTest();
    tt.testIt();
}I then create a connection as described in the docs.
I now have a connections.xml as follows:
<?xml version = '1.0' encoding = 'UTF-8'?>
<References xmlns="http://xmlns.oracle.com/adf/jndi">
   <Reference name="CurrencyConvertor" className="oracle.adf.model.connection.webservice.impl.WebServiceConnectionImpl" xmlns="">
      <Factory className="oracle.adf.model.connection.webservice.api.WebServiceConnectionFactory"/>
      <RefAddresses>
         <XmlRefAddr addrType="WebServiceConnection">
            <Contents>
               <wsconnection description="file:/C:/JDeveloper/mywork/WebServiceTest/Model/src/ch/mit/trac/ws/proxy/CurrencyConvertor.wsdl" service="{http://www.webserviceX.NET/}CurrencyConvertor">
                  <model name="{http://www.webserviceX.NET/}CurrencyConvertor" xmlns="http://oracle.com/ws/model">
                     <service name="{http://www.webserviceX.NET/}CurrencyConvertor">
                        <port name="CurrencyConvertorHttpPost" binding="{http://www.webserviceX.NET/}CurrencyConvertorHttpPost">
                           <operation name="ConversionRate">
                              <output name=""/>
                              <input name=""/>
                           </operation>
                        </port>
                        <port name="CurrencyConvertorHttpGet" binding="{http://www.webserviceX.NET/}CurrencyConvertorHttpGet">
                           <operation name="ConversionRate">
                              <output name=""/>
                              <input name=""/>
                           </operation>
                        </port>
                        <port name="CurrencyConvertorSoap12" binding="{http://www.webserviceX.NET/}CurrencyConvertorSoap12">
                           <soap addressUrl="http://www.webservicex.com/CurrencyConvertor.asmx" xmlns="http://schemas.xmlsoap.org/wsdl/soap/"/>
                           <operation name="ConversionRate">
                              <soap soapAction="http://www.webserviceX.NET/ConversionRate" xmlns="http://schemas.xmlsoap.org/wsdl/soap/"/>
                              <output name=""/>
                              <input name=""/>
                           </operation>
                        </port>
                        <port name="CurrencyConvertorSoap" binding="{http://www.webserviceX.NET/}CurrencyConvertorSoap">
                           <soap addressUrl="http://www.webservicex.com/CurrencyConvertor.asmx" xmlns="http://schemas.xmlsoap.org/wsdl/soap/"/>
                           <operation name="ConversionRate">
                              <soap soapAction="http://www.webserviceX.NET/ConversionRate" xmlns="http://schemas.xmlsoap.org/wsdl/soap/"/>
                              <output name=""/>
                              <input name=""/>
                           </operation>
                        </port>
                     </service>
                  </model>
               </wsconnection>
            </Contents>
         </XmlRefAddr>
      </RefAddresses>So far so good.
I then created a new jspx page with a button that calls a method in a request scoped bean.
The method is supposed to use the connections.xml to get the web service proxy in order to call the web service.
The bean code is as follows :
package ch.mit.test;
import javax.faces.event.ActionEvent;
import ch.mit.trac.ws.proxy.*;
import ch.mit.trac.ws.root.Currency;
import javax.naming.Context;
import javax.naming.NamingException;
import oracle.adf.model.connection.webservice.api.WebServiceConnection;
import oracle.adf.share.ADFContext;
public class test {
public test() {
public void testIt() throws NamingException {
    Context ctx;
    ctx = ADFContext.getCurrent().getConnectionsContext();
    WebServiceConnection wsc;
    wsc = (WebServiceConnection) ctx.lookup("CurrencyConvertor");
    CurrencyConvertor currencyConvertor = wsc.getJaxWSPort(CurrencyConvertor.class);   -- NPE here
    CurrencyConvertorSoap currencyConvertorSoap = currencyConvertor.getCurrencyConvertorSoap();
    Double res = currencyConvertorSoap.conversionRate(Currency.CHF, Currency.USD);
    System.out.println("Hello");
    System.out.println(res);
public void testws(ActionEvent actionEvent) {
    try {
      testIt();
    } catch (NamingException e) {
}When running the application and clicking on the button I keep getting the following error at the line marked NPE Here above:
<LifecycleImpl> <_handleException> ADF_FACES-60098:Le cycle de vie Faces reçoit des exceptions non traitées en phase INVOKE_APPLICATION 5
javax.faces.el.EvaluationException: java.lang.NullPointerException
     at org.apache.myfaces.trinidadinternal.taglib.util.MethodExpressionMethodBinding.invoke(MethodExpressionMethodBinding.java:58)
     at org.apache.myfaces.trinidad.component.UIXComponentBase.broadcastToMethodBinding(UIXComponentBase.java:1256)
     at org.apache.myfaces.trinidad.component.UIXCommand.broadcast(UIXCommand.java:183)
     at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:475)
     at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:756)
     at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._invokeApplication(LifecycleImpl.java:765)
     at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._executePhase(LifecycleImpl.java:305)
     at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:185)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
     at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
     at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
     at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
     at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.adf.share.http.ServletADFFilter.doFilter(ServletADFFilter.java:62)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter.doFilter(RegistrationFilter.java:106)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:446)
     at oracle.adfinternal.view.faces.activedata.AdsFilter.doFilter(AdsFilter.java:60)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:446)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:271)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:177)
     at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:111)
     at java.security.AccessController.doPrivileged(Native Method)
     at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:313)
     at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:413)
     at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:94)
     at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:161)
     at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:136)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3715)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3681)
     at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
     at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
     at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2277)
     at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2183)
     at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1454)
     at weblogic.work.ExecuteThread.execute(ExecuteThread.java:207)
     at weblogic.work.ExecuteThread.run(ExecuteThread.java:176)
Caused by: java.lang.NullPointerException
     at java.lang.Class.isAssignableFrom(Native Method)
     at oracle.j2ee.ws.common.jaxws.runtime.GenericJavaType.create(GenericJavaType.java:97)
     at oracle.j2ee.ws.common.jaxws.runtime.GenericJavaType.create(GenericJavaType.java:118)
     at oracle.j2ee.ws.common.jaxws.runtime.OperationMappingModeler.processParameters(OperationMappingModeler.java:268)
     at oracle.j2ee.ws.common.jaxws.runtime.OperationMappingModeler.processMethod(OperationMappingModeler.java:155)
     at oracle.j2ee.ws.common.jaxws.runtime.ServiceEndpointRuntimeModeler.buildRuntimeModel(ServiceEndpointRuntimeModeler.java:114)
     at oracle.j2ee.ws.client.jaxws.WsClientProxyFactory.getRuntimeMetadata(WsClientProxyFactory.java:69)
     at oracle.j2ee.ws.client.jaxws.WsClientProxyFactory.createProxy(WsClientProxyFactory.java:126)
     at oracle.j2ee.ws.client.jaxws.WsClientProxyFactory.createProxy(WsClientProxyFactory.java:106)
     at oracle.j2ee.ws.common.jaxws.ServiceDelegateImpl.getPort(ServiceDelegateImpl.java:219)
     at oracle.j2ee.ws.common.jaxws.ServiceDelegateImpl.getPort(ServiceDelegateImpl.java:249)
     at oracle.adf.model.connection.webservice.impl.WebServiceConnectionImpl.getJaxWSPort(WebServiceConnectionImpl.java:399)
     at ch.mit.test.test.testIt(test.java:27)
     at ch.mit.test.test.testws(test.java:41)
     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:597)
     at com.sun.el.parser.AstValue.invoke(Unknown Source)
     at com.sun.el.MethodExpressionImpl.invoke(Unknown Source)
     at org.apache.myfaces.trinidadinternal.taglib.util.MethodExpressionMethodBinding.invoke(MethodExpressionMethodBinding.java:53)
     ... 44 moreCan anybody help as to what the problem is...
(the WSDL is at http://www.webservicex.com/CurrencyConvertor.asmx?WSDL)
Regards
Paul

Hi Frank
The page is ADF bound, I've added the page source and the adfc-config source below :
Page
<?xml version='1.0' encoding='UTF-8'?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="2.1"
          xmlns:f="http://java.sun.com/jsf/core"
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</adfc-config>It seems to be the same sort of problem as in Re: Error in ADF Web Service Connection
Regards
Paul

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public Element[] updateProfile(Element[] params)
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          // constructs an array of DOM Elements for message to send back to client
          SOAPBodyElement[] response = new SOAPBodyElement[1];
          response[0] = new SOAPBodyElement(XMLUtils.StringToElement("urn:foo", "e1", message));
          return response;
}Gokce.

Security with Web Service calling some EJBs

Hi everybody,
I have implemented some web services residing in a war file deployed on my Tomcat. The web services module is a client to some EJBs deployed on my JBoss. I need to log the user in my realm on each WS request and log the user out before the WS response.
I have implemented security on web applications with JBoss and used JAAS realms succesfully but what do I do in this case with Web Services? I mean the requests are stateless. If I use the org.jboss.security.ClientLoginModule
won't this override the credentials of another user who is already logged in the realm?
I have also implemented a standalone application which spawns a thread for each user request and I am wondering about the same thing. This application is a service listening for some kind of messages; on a message the application should log the user in the realm before calling an EJB and log the user after the request is completed. So it's more or less the same situation as above.
Is this possible? I mean logging many users in the same realm in one non-web application?
Any ideas?
Thank you in advance!!!
thoism

requests are stateless, just as are requests to webapps.
Which is hardly surprising as a web services stack is typically implemented as a web application.
If you could log in only a single user at the same time to an EJB application, it would be rather pointless to have the application as a distributed multiuser system :)
What you might check is whether you're allowed to log in the same user several times, if I remember correctly this can be limited in the EJB module deployment descriptors.

Connect to BAPI with web service

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