Calling BDC from Java using JCO

Hello Everyone,
Is it possible to call a BDC from Java program using JCO ?

Are you serious with that question? Did you try to build the web service client before? Because this is exactly the same. Try to find "building web service clients" instead "Calling BPEL from java". By default (probably) every BPEL process has both WSIF and SOAP end points, just use correct WSDL address.

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Calling package from java using JNDI properties

Hi there,
I have created an interface to transfer data from oracle to JMS XML Queue. It is inside a package and have generated a scenario.
The scenario works well when executed from the ODI designer. When I execute it from java it throws an error. The error is
java.sql.SQLException: Cannot load connection class because of underlying exception: 'javax.jms.JMSException: Cannot create the initial JNDI context
Is there any ways to set the JNDI properties, (any set methods for ODIConnection object)
Cheers

Are you serious with that question? Did you try to build the web service client before? Because this is exactly the same. Try to find "building web service clients" instead "Calling BPEL from java". By default (probably) every BPEL process has both WSIF and SOAP end points, just use correct WSDL address.

Duration of an Abap Function call from Java using Jco3

Hi guys!
I would like to use this discussion to get some refernces of the duration Timespan of an RFC call from Java to SAP. At the moment, i need at last about 200ms to call the Abap function. I'm just using one simple import and export parameter (so no deep structures). I think that the reason for my poor performance is, that the Java Tool and the SAP instance are not in the same network. So, i hope some of you have some data, how fast an RFC call from Java using Jco can be executed.
greetings, Hannes

Hi Hannes,
I think you have already got the answer to your question - the network set-up you have is probably the bottleneck. Whenever I've worked with Java <-> ABAP and they are in the same network, I've had no performance problems at all.
Does your RFC contain any complex logic or business processes? Are you able to try and call something that does nothing, say it just accepts an input string and returns it straight away as an export. Do you have any scope for testing with your Java tool on the same network as the SAP system?
Cheers,
G.

Calling C from Java. C takes in a command line input

Hello,
I have created some basic JNI programs, in which the java file calls the C files. The way I could do it was directly calling the functions in the C files, which I needed. Now I am trying to call a C file from Java, and the C files takes in a command line argument after being compiled.
Also after compiling the C file, it produces an exe. I cannot change the C file and also want to call it from Java using JNI (as I want to later put all this into a jar and jnlp file and put it on webstart).
If anyone can help me on how to call the compiled C file and how to send in the input as a command line argument I would greatly appreciate it.
Thanks
Nick

Now I know how to create a C wrapper file and a Java file in JNI format. Does this mean you want to run the exe files by calling the main() method through JNI. Yes you can do that BUT you will need to turn your exe file into a dll and then write a JNI wrapper to act as a bridge between the Java and the dll.Yes. Thats exactly what I want to do. I want to call the C files through JNI. But what I am asking is, how do I send in the input which is originally sent in as stdin? And also what are the steps to follow if I want to call a main method of the C files in the JNI.
Up till now I have been using JNI to call functions from the initial C files from the C wrapper file. But now I want to call the .exe file by sending it a command line input. Or if you can suggest a better method that would be great.
You can execute an exe file using ProcessBuilder then there is no need for a JNI wrapper. You must read the 4 sections of [http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html|http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html] and implement ALL the recommendations. Failure to do so will cause you much grief.
You could achieve the same result but using a lot more code and a hell of a lot more effort by invoking the exe executables from JNI code that invokes the 'C' exec() library. Just thinking about that approach makes my eyes water!
Well if I just use the exec() library I can do it, yes thats ture. But I wasnt sure if I did that, and then put this on Java Web Start, if non PC users can access it or not. If macs, and linux machines can access this even If i use exec, then my problem is solved.
Thanks
Nick

Calling Java API from ABAP using JCo (Part 2)

Hello,
This is an additional question to thread Calling Java API from ABAP using JCo
Has anyone managed to get the input parameter value
input.getString("REQUTEXT")
that is being passed from ABAP?
If yes, what kind of setting you need to do? Because when I execute, it has no value.
Thus, the below ECHOTEXT parameter returns blank value:
output.setValue(input.getString("REQUTEXT"),"ECHOTEXT");
When I debug by printing the below line, the input XML is indeed without value:
System.out.println(input.toXML());
Anybody knows how to pass input variable from ABAP to JAVA using JCo?
rgs,
hiroshi

Hallo Hiroshi,
as far as I can see, you are doing it the right way. The problem might be that the ABAP program does not fill in this parameter because something went wrong in the SAP System.
Have you tried setting a breakpoint (an HTTP session - remote breakpoint) and tried checking step by step if the value is being processed and put into the REQUTEXT field?
Bye,
Sameer

RFC call from MII using JCO

Hi All,
I am calling custom function module from MII using JCO and I am facing one problem. Problem is that if any new field is added in function module in ECC side that is not appearing in RFC structure until we restart the MII server. Can anybody provide any solution. I am using MII 12.1 SP5.
Thanks in Advance
Chandan

I faced this same issue. Only one solution is to reset the JCo Proxy by running following URL in the same MII server
http://<MII Server>/XMII/JCOProxy?mode=reset
This will reset the JCo cache and the new added fields in RFC at SAP end will be reflected in the Request/Response xml structure of the RFC in BLS
Regards
Som

Sample Java code and detail to call RFC from Java clas developed in Eclipse

Hi All,
I am new to Java. I have downloaded Eclipse IDE and planning to use for developing Java application to send data to SAP by calling RFC JCO Interface.
I need a sample java code/tutorial step by step to create Java class for simple example to call RFC from Java.
I have downloaded SAPJCO3 from service market place.
Kindly help me to send steps involved to configure for JCO with my Eclipse with JCO.
Thanks in advance.
Sharma

Hi Sharma,
Please have a look at [Example: Using Generated Proxies to Call Function Modules |http://help.sap.com/saphelp_nw04/helpdata/en/b6/55e3952a902447847066a0df27b0d6/content.htm]
JCo Exceptions : http://help.sap.com/saphelp_nw70ehp1/helpdata/en/f6/daea401675752ae10000000a155106/content.htm
Hope it will helps
Regards
Arun

Call OSB from java client

Hi',
I am trying to call OSB from java client,
The OSB proxy Service type is "WSDL Web Service", I am able to get response from SOAP UI with below request, Please help me with Java code,
I have been Googling a lot for this however didnt got enough.
Thanks
Yatan
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:v1="http://core.xxx.com/schema/ServiceHeader/V1.0" xmlns:v11="http://core.xxx.com/schema/Customer/V1.0" xmlns:v12="http://core.xxx.com/schema/Customer/V1.0">
<soapenv:Header>
<wsse:Security soapenv:mustUnderstand="1" xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd">
<wsse:UsernameToken wsu:Id="UsernameToken-2" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
<wsse:Username>weblogic</wsse:Username>
<wsse:Password Type="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordText">welcome1</wsse:Password>
</wsse:UsernameToken>
</wsse:Security>
<v1:GMWSHeader>
<v1:SourceId>String</v1:SourceId>
<v1:TransactionId>String</v1:TransactionId>
<v1:TransactionTimeStamp>1967-08-13</v1:TransactionTimeStamp>
<v1:ServiceVersion>LATEST</v1:ServiceVersion>
</v1:GMWSHeader>
</soapenv:Header>
<soapenv:Body>
<v11:GetDetailsRequest>
<v11:Condition>
<v12:SellingSource>?</v12:SellingSource>
<v12:FulfillingFCNNbr>?</v12:FulfillingFCNNbr>
</v11:Condition>
</v11:GetDetailsRequest>
</soapenv:Body>
</soapenv:Envelope>

Thanks Guys, I tried the ways you mentioned I am getting below error, this error is coming in both weblogic clientgen and webservice proxy from jdeveloper,
I understand that this error has something to do with my process however not sure why is it coming, I will really appreciate if you can provide me some pointers.
error:
Buildfile: C:\JDeveloper\OSBClient\TestOSBClient\build.xml
javaFromWSDL:
[clientgen]
*********** jax-ws clientgen attribute settings ***************
wsdlURI: http://localhost:8001/xx/som/contracts/CustomerContract?wsdl
packageName : com.osb.client
destDir : C:\OSB
*********** jax-ws clientgen attribute settings end ***************
[clientgen] Consider using <depends>/<produces> so that wsimport won't do unnecessary compilation
[clientgen] parsing WSDL...
[clientgen]
[clientgen]
[clientgen] [ERROR] A class/interface with the same name "com.osb.client.SOMMessage" is already in use. Use a class customization to resolve this conflict.
[clientgen] line 89 of http://localhost:8001/xx/som/contracts/CustomerContract?SCHEMA%2FSOMResources%2FXSD%2FSOMCommon
[clientgen]
[clientgen] [ERROR] (Relevant to above error) another "SOMMessage" is generated from here.
[clientgen] line 51 of http://localhost:8001/xx/som/contracts/CustomerContract?SCHEMA%2FSOMResources%2FXSD%2FSOMCommon
[clientgen]
[clientgen] [ERROR] A class/interface with the same name "com.osb.client.TaskCompletionMessage" is already in use. Use a class customization to resolve this conflict.
[clientgen] line 82 of http://localhost:8001/xx/som/contracts/CustomerContract?SCHEMA%2FSOMResources%2FXSD%2FSOMCommon
[clientgen]
[clientgen] [ERROR] (Relevant to above error) another "TaskCompletionMessage" is generated from here.
[clientgen] line 76 of http://localhost:8001/xx/som/contracts/CustomerContract?SCHEMA%2FSOMResources%2FXSD%2FSOMCommon
[clientgen]
[clientgen] [ERROR] Two declarations cause a collision in the ObjectFactory class.
[clientgen] line 89 of http://localhost:8001/xx/som/contracts/CustomerContract?SCHEMA%2FSOMResources%2FXSD%2FSOMCommon
[clientgen]
[clientgen] [ERROR] (Related to above error) This is the other declaration.
[clientgen] line 51 of http://localhost:8001/xx/som/contracts/CustomerContract?SCHEMA%2FSOMResources%2FXSD%2FSOMCommon
[clientgen]
[clientgen] [ERROR] Two declarations cause a collision in the ObjectFactory class.
[clientgen] line 82 of http://localhost:8001/xx/som/contracts/CustomerContract?SCHEMA%2FSOMResources%2FXSD%2FSOMCommon
[clientgen]
[clientgen] [ERROR] (Related to above error) This is the other declaration.
[clientgen] line 76 of http://localhost:8001/xx/som/contracts/CustomerContract?SCHEMA%2FSOMResources%2FXSD%2FSOMCommon
[clientgen]
BUILD FAILED
weblogic.wsee.tools.WsBuildException: Error running JAX-WS clientgen: null
     at weblogic.wsee.tools.clientgen.jaxws.ClientGenImpl.execute(ClientGenImpl.java:175)
     at weblogic.wsee.tools.anttasks.ClientGenFacadeTask.execute(ClientGenFacadeTask.java:244)
     at weblogic.wsee.tools.anttasks.ClientGenTask.execute(ClientGenTask.java:365)
     at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatinxxethodAccessorImpl.invoke(DelegatinxxethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:597)
     at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
     at org.apache.tools.ant.Task.perform(Task.java:348)
     at org.apache.tools.ant.Target.execute(Target.java:357)
     at org.apache.tools.ant.Target.performTasks(Target.java:385)
     at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1337)
     at org.apache.tools.ant.Project.executeTarget(Project.java:1306)
     at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
     at org.apache.tools.ant.Project.executeTargets(Project.java:1189)
     at org.apache.tools.ant.Main.runBuild(Main.java:758)
     at org.apache.tools.ant.Main.startAnt(Main.java:217)
     at org.apache.tools.ant.Main.start(Main.java:179)
     at org.apache.tools.ant.Main.main(Main.java:268)
Caused by: Error starting wsimport:
     at com.sun.tools.ws.ant.WsImport2.execute(WsImport2.java:757)
     at weblogic.wsee.tools.clientgen.jaxws.ClientGenImpl.execute(ClientGenImpl.java:169)
     ... 19 more
Caused by: com.sun.tools.ws.wscompile.AbortException
     at com.sun.tools.ws.processor.modeler.wsdl.JAXBModelBuilder.bind(JAXBModelBuilder.java:136)
     at com.sun.tools.ws.processor.modeler.wsdl.WSDLModeler.buildJAXBModel(WSDLModeler.java:2255)
     at com.sun.tools.ws.processor.modeler.wsdl.WSDLModeler.internalBuildModel(WSDLModeler.java:194)
     at com.sun.tools.ws.processor.modeler.wsdl.WSDLModeler.buildModel(WSDLModeler.java:140)
     at com.sun.tools.ws.wscompile.WsimportTool.buildWsdlModel(WsimportTool.java:261)
     at com.sun.tools.ws.wscompile.WsimportTool.run(WsimportTool.java:203)
     at com.sun.tools.ws.wscompile.WsimportTool.run(WsimportTool.java:188)
     at com.sun.tools.ws.ant.WsImport2.execute(WsImport2.java:738)
     ... 20 more
Total time: 3 seconds

Call ABAP from Java

Can any one help me in calling an ABAP program from Java.
The version of SAP with me is 4.7.
Thanks in advance.
Regards ,
Nagaraju Donikena

To call ABAP from Java when I tried doing it from sample code given in help I was getting the following error. Can any one help in this regard.
Exception in thread "main" java.lang.ExceptionInInitializerError: JCO.classIniti
alize(): Could not load middleware layer 'com.sap.mw.jco.rfc.MiddlewareRFC'
JCO.nativeInit(): Could not initialize dynamic link library sapjcorfc [no sapjco
rfc in java.library.path]. java.library.path
        at com.sap.mw.jco.JCO.<clinit>(JCO.java:735)
        at TestConnect.<init>(TestConnect.java:8)
        at TestConnect.main(TestConnect.java:25)

Calling Serializer from Java

Hi,
I am calling xsql from Java.
Can I set FOPserializer with help of oraclesql like i can set other attribute of xsql.
e.g
OracleXMLQuery ors = new OracleXMLQuery(conn, selectStmt);
ors.setRaiseNoRowsException(false);
ors.setSkipRows(skipRows);
ors.setMaxRows(maxRows);
an example would be helpful.
Thanks in advance
Raju

The FOPSerializer (and the concept of serializers in general) is a feature of the XSQL Pages Framework. Your code example here is using the XML SQL Utility's OracleXMLQuery class. To use XSQL programmatically, you should use the oracle.xml.xsql.XSQLRequest class, documented in the XSQL Online Documentation
hope this helps.

Calling ant from java

public static void main(String[] args) {
          String arr[] = null;
          arr = new String[2];
          arr[0] = "-buildfile";
          arr[1] = "C:\\workspace\\my projects\\ANTTASKS\\bin\\build.xml";
          try {
               Launcher launcher = new Launcher();
               launcher.main(arr);
          } catch (Exception e) {
               System.out.println(e.getMessage());
               // TODO: handle exception
I tried calling ant from java. But the problem is that, i am not sure how to get the handle of error & input stream from this.
I also need to know how do I kill the ant executable if there is some kind of exception like ConnectionTimeOut or is there any some kind of timeout mechanism.
Earlier i was calling ant as an external process like Process P = new Process(), where p.execute("ant.bat xxxxx"). I used to get the error & input stream from the process itself.
Please help!!!
thanks

A better approach would be to use the classes provided in Ant. The API documentation for Ant has all the necessary information.
The sample code would look like:
Project ant = new Project();
ProjectHelper helper = new ProjectHelperImpl();
ant.init();
helper.parse(ant, new File("build.xml"));
ant.executeTarget("clean");

How to invoke Bpel process from java using 'bpel process WSDL'

I want to call bpel process from java using bpel wsdl.
could any one point me to any url/sample.
Thanks
Nagajyothy

Hi Seshagiri,
Thanks for providing links and initial steps to create web service proxy(using Jdeveloper 11g).
I created a web service proxy.
provided the needed inputs.
when I ran the client app, bpel process(has a human task) got invoked but faulted with exception as below
Operation 'initiateTask' failed with exception 'EJB Exception: : java.lang.ExceptionInInitializerError[[
     at oracle.tip.pc.services.common.ServiceFactory.getAuthorizationServiceInstance(ServiceFactory.java:147)
     at oracle.bpel.services.workflow.task.impl.TaskService.initiateTask(TaskService.java:1159)
     at oracle.bpel.services.workflow.task.impl.TaskService.initiateTask(TaskService.java:502)
     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)
please help me in solving the above problem.
Thanks
Nagajyothy

Call ESB from java or unix

Dear All,
Due to project requirement, I have a customer who wants to call ESB from java/unix
i am aware of java calling BPEL but I have never seen a java calling ESB ?
does any body about it ?
Is it possible ?
Appreciate your response.
Best Regards
Arc

Hi, for BPEL there is a really good API to invoke processes externally. For ESB there is not (as far as I know). But each ESB process is just invokable like any other web service. So it would be an option to use javax.xml.rpc package and create Service and Call objects. You can then make use of DII (Dynamic invoking) and there is no need to specify parameters as long payload for the ESB process is valid XML for the Routing Service.
Jos Baan

Calling BRM from UDF using JNDI lookup with @EJB annotation

Hi Experts
I am trying to implement a UDF to invoke my BRM Rules set via JNDI Lookup instead of a SOAP Channel lookup.
I have had a look at the following links/docs:
Calling BRM from UDF using Public API
http://www.gleanster.com/system/resources/W1siZiIsIjIwMTIvMDgvMDcvMjAvNDcvNTAvNDMvVGhpbmdzX1lvdV9TaG91bGRfS25vd19hYm91dF9TQVBfTmV0V2VhdmVyX0JSTS5wZGYiXV0/Things%20You%20Should%20Know%20about%20SAP%20NetWeaver%20BRM.pdf
For item 1 above, the example looks really good, but it doesnt explain how I get access to the following required imports from my UDF:
import com.sap.brms.qrules.ejb.*;
import com.sap.brms.qrules.engine.AbstractProject;
import com.sap.brms.qrules.engine.RuleEngine;
import com.sap.brms.qrules.engine.RulesetContext;
import javax.ejb.EJB;
The second document is really good as well, but I could not figure out how to get it to work from my UDF.
So, can anyone help me to understand specifically what is required to get this to work?
Is is possible to invoke the rule set from my UDF?
How do I give my UDF access to all the required jars/imports?
I have manage to create a new DC (Development Component) with a public part and this enables me to get my code to compile on my local PC but I am not able to activate it due to the server not having access to the same java packages as my local copy.
Any help would be greatly appreciated.

You resolve the dependency by importing the required jars with using the dependency tab for the mapping program.
As stipulated before, I have managed to resolve the dependency issue but I have now getting the same error as in the forum: Calling BRM from UDF using Public API
The specific error is:
com.sap.engine.services.cross.PortableRemoteObjectContainer.narrow(PortableRemoteObjectContainer.java:238)
Has anyome manage to get invoke a BRM Ruleset using JNDI?

How to call xml from java

Hi
I want to use xml for updating files in an existing jar . so i want to call xml from java code and then come back to java code and do the remaining work in java code, pl guide me how to do this . what APIs are helpful for this regard
Thanks

You can't update files in a jar. Even if you could, you wouldn't use XML for that. You don't call XML. XML is not a programming language. So, basically your entire question is misguided.

Calling BDC from Java using JCO

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