Explain Webservice

HI,
Can anybody explain the difference between a webservice and RFC/RPC, etc from a layman's point of view?
Thank you very much.
Regards,
Arjun.

Hi,
Webservices enable machines of different configurations to communicate with each other.
For example, SAP system needs to use a functionality(say a procedure executing successfully for years)present in the mainframe system.
There must be some extra code which needs to be added to the procedure in the mainframe system, so that it can understand SAP system's request.
Adding extra code to the already existing procedure may result in some exceptions. Moreover this procedure would be used by many other applications.
The solution would be to use a Web service which would convert SAP's request into a request that the mainframe can understand and vice versa.
Any system, that needs to use a webservice communicates using SOAP packets.
RFC's can be used only when the involved systems are of the same configuration.
Regards,
Smitha.

Similar Messages

Web service to File scenario

hello experts
I would like to know how to configure WS to File Scenario.
(if possible all the steps will be appreciated)
thanks
Kfir

Hi kfir goldwasser,
Here is a scenario i'm explaining webservices(SOAP) to file scenario step by step:
SENDER SOAP ADAPTER: The sender SOAP adapter is basically used to send content from remote clients or Web service servers to the XI.
To do the end to end scenario let us consider a simple scenario
IR:
1. source data type
2.target data type
3.MT for Both
4.Message interface for both
5.message mapping
6.interface mapping
ID:
1)Define Serder Comunication channel type SOAP.
in DEFAULT XI PARAMETER you must put Message interface and Namespace of serder structure defined in IR
2) Define Receiver Communication channel.
3)define Receiver Determination
3)define Interface Determination
4)Define Sender agreement
5) Define Receiver Agreemen.
6)Active your changes.
DEFINE WEB SERVICE:
7)go to tool>enviroment>define Web services and put this string
http://<Host>:<Port>/XISOAPAdapter/MessageServlet?channel=:<Bussines_System>:<Communication Channel>.
Example: http://srv-xi01-adm:50000/XISOAPAdapter/MessageServlet?channel=:SCR_D:scr_d_soap_customer_sender
8)next step select MI of list
9)en next step you must define your sender BS and Message Interface.
10) Save Web service.
Test ur service with for example XML-Spy
Steps to make a request using the XML SPY:
1. Open the XML SPY, in the menu go to SOAP  Create new SOAP request
2.it will open a new window you will provide the path wsdl file that you have recently save .
3.Click on OK button a new window will be opened which shows the SOAP request
4.In the menu choose SOAP  Send request to server
5.Asynchronous Request: If your request is successful you will receive a SOAP response which will be empty response in an asynchronous request .
to configure file receiver adapter take in mind these blogs
File Receiver with Content Conversion
Introduction to simple (File-XI-File)scenario and complete walk through for starters(Part2)
For webservice to file scenario:
Plz Do check the following blog:
Invoke Webservices using SAPXI
In your case, receiver is file.. so you need to create Message Interface etc for the file output..
Also refer this document to understand the steps-
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/d23cbe11-0d01-0010-5287-873a22024f79
For SOAP see below links
RFC -> XI -> WebService - A Complete Walkthrough (Part 1)
RFC -> XI -> WebService - A Complete Walkthrough (Part 2)
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/befdeb90-0201-0010-059b-f222711d10c0
An Overview of SOAP
An Overview of SOAP
http://help.sap.com/saphelp_nw04/helpdata/en/69/a6fb3fea9df028e10000000a1550b0/frameset.htm
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/d23cbe11-0d01-0010-5287-873a22024f79
Regards,
Vinod.
Edited by: Vinod Reddy on Jul 1, 2008 9:46 AM

Brief explaination of REST,Webservices,CSON and JSON

brief explaination of REST,Webservices,CSON and JSON

http://www.simplecodestuffs.com/what-is-the-difference-between-http-and-rest-and-soap-in-web-services/
SOAP uses WSDL for communication between consumer and provider, whereas REST just uses XML or JSON to send and receive data
WSDL Defines contract between client and service and is static by its nature. In case of REST contract is somewhat complicated and is defined by HTTP, URI, Media Formats and Application Specific Coordination
Protocol. It’s highly dynamic unlike WSDL.
SOAP doesn’t return human readable result, while REST result is readable with is just plain XML or JSON
This is not true. Plain XML or JSON are not RESTful at all. None of them define any controls(i.e. links and link relations, method information, encoding information etc…) which is against REST as far as messages must be self contained and coordinate interaction
between agent/client and service.
With links + semantic link relations clients should be able to determine what is next interaction step and follow these links and continue communication with service.
It is not necessary that messages be human readable, it’s possible to use cryptic format and build perfectly valid REST applications. It doesn’t matter whether message is human readable or not.
Thus, plain XML(application/xml) or JSON(application/json) are not sufficient formats for building REST applications. It’s always reasonable to use subset of these generic media types which have strong semantic meaning and offer enough control information(links
etc…) to coordinate interactions between client and server.
REST is over only HTTP. HTTP is most widely used and when we talk about REST web services we just assume HTTP. HTTP defines interface with it’s methods(GET, POST, PUT, DELETE, PATCH etc) and various headers
which can be used uniformly for interacting with resources. This uniformity can be achieved with other protocols as well.
REST permits many different data formats where as SOAP only permits XML.
While this may seem like it adds complexity to REST because you need to handle multiple formats, in my experience it has actually been quite beneficial. JSON usually is a better fit for data and parses much faster. REST allows better support for browser clients
due to it’€™s support for JSON.
If this helped you resolve your issue, please mark it Answered

Can Anybody explain me the difference between a Bapi and a webservice?

Can Anybody explain me the difference between a Bapi and a webservice?

Hi Anil,
<b>BAPI</b>
BAPI is a library of functions that are released to the public
as an interface into an existing SAP system from an external
system.A BAPI function is a function module that
can be called remotely using the RFC technology
BAPI are RFC enabled function modules. the difference between RFc and BAPI are business objects. You create business objects and those are then registered in your BOR (Business Object Repository) which can be accessed outside the SAP system by using some other applications (Non-SAP) such as VB or JAVA.
In this case you only specify the business object and its method from external system in BAPI there is no direct system call. while RFC are direct system call Some BAPIs provide basic functions and can be used for most SAP business object types. These BAPIs should be implemented the same for all business object types. Standardized BAPIs are easier to use and prevent users having to deal with a number of different BAPIs. Whenever possible, a standardized BAPI must be used in preference to an individual BAPI. It is not possible to connect SAP to Non-SAP systems to retrieve data using RFC alone. RFC can acces the SAP from outside only through BAPI and same is for vice versa access.
<b>Webservice</b>
In simpler terms, WebService is an application on the Web/Internet. Wheneever Service is requested by the user, it provides the service (i.e Request/Response)
A web service is a collection of protocols and standards used for exchanging data between applications or systems
In SAP world, we can expose an application into the Webservice. For e.g We can expose ABAP programs into Webservice.
XI uses SOAP adapter to communicate with webservices see below...why only soap adpater???
-> Some remote clients or Web services providers are only able to communicate by means of SOAP messages
->SOAP adapter enables you to exchange SOAP message between remote clients and Web Service Servers and the Integration Server.
-> The SOAP Adapter provides a runtime environment that includes various SOAP components for the processing of SOAP message.
-> You use the SOAP adapter to connect such systems to the Integration Server directly
-> The SOAP adapter uses a helper class to instantiate and control these SOAP components
->The SOAP adapter receives a msg from the remote client or Web service provider, converts the SOAP protocol into XI msg protocol and then sends the msg to the Integration Server to be processed further.
Basically RFCs BAPI are all SAP oriented, Webservices are language / environement independent. So, all one has to do is publish a Webservice and any external system by providing the data in the correct format, can get the approopriate response back.
see these links to know more abt webservices..
http://www.webservices.org/
http://www.w3.org/2002/ws/
regards
biplab

Not able to get the data from synchronous Webservice To BPEL process

Hi All,
My requirement is : Third party has some webservice.They are pushing data to that Webservice(Wsdl).
Third part WSDL example : http://ipaddress:port/name/Service.svc?wsdl ( This is just example format of their WSDL)
After that I need to get that data into my BPEL process and update my system.
When I built My Snchronous BPEL process I imported third party WSDL(http://ipaddress:port/name/Service.svc?wsdl) through 'import WSDL' in dialog.After that I automatically got the (request and response schema elements) parameters from that WSDL.I gave input and output of the BPEL process from those elements.
I pasted that third party URL iin SOAPUI and I got their operations and schemas.Based on that I had choosen the elements for 'input' and 'output' of the BPEL processes.I am also getting the schema structures in 'Assign' or 'Transform' activity.
I built the whole process.
I have the Process.
Now Client is pushing data to their WSDL(http://ipaddress:port/name/Service.svc?wsdl) as it is their data pushing interface.But that data is not coming to my BPEL process and instance is not being created in EM console.
As I have imported their WSDL into my BPEL process,I need to get the data.But I am not getting the data.
Is there any problem in MY BPEL process?
(or)
DO I need to use 'Webservice' Adapter in 'Exposed Services' Swimlane in Composite Editor to have the third party URL, so that they Can push the data to that WSDL in turn that data comes into my BPEL process?
Can anybody help me this case?
once again my requirement is :
Client pushes the data through their WSDL url -----> I need to get that data into MY BPEL process --> I have my own WSDl to take that details into my system.

I will explain the requirement in small paragraph:
There are two applications.One is our application(X) and another one is third party application(Y).
I need to update in my application(X) based on data coming from application(Y).
I am using SOA as a middle tier to have communication between Y and X.
(Ex: if they send some info like event type 'event1' from Y ,I need to update that 'event1' data in my X application)
The work at third party application is :
According their info,They will push data from their end to their WSDL( http://ipaddress:port/name/Service.svc?wsdl ).
They are telling they can only send the data to their WSDL( http://ipaddress:port/name/Service.svc?wsdl ).
They will not consume our BPEL process(I think they might be wrong at this point of time).They have one WSDL to send or push the data from their end.
The work at from our side(SOA & X application)
From that point ,our BPEL process has to receive that data and update that data into my application(X).
I hope You understand my requirement.
Can you guide me through how to achieve this task as they are telling they have to use their WSDL to push the data?
(or)
Do I need to take 'Webservice' adapter into Exposed Services Swimlane in Jdeveloper to have their webservice(third party WSDL),If it is So Can you tell me the details how to take 'input' and 'output' for BPEL process?
(or)
Can YOu suggest me to talk to them to consume my BPEL process directly?
Thanks
Edited by: 899283 on Aug 17, 2012 4:55 AM

Help : Complex parameter and return value in WebService?

Hi guys
   These days, I publish a WebService, in it there is an
operation like this:
   List search(List para);
   in this operation, parameter "para" is a java.util.List, which contains many elements, every element is an instance of customizing class "MyItem", I made "MyItem" implements java.io.Serializable interface. Strangely, when I call this operations in my java client,
I found that I could not get out every element from para in server-side, but para.size() is showing it contains 10 elements in it. The same thing happen to the return value of this operation, in client, I got an instance of java.util.List class as the return value, when I try
System.out.println(result.get(0)); it output "null", but
result.size() is 10, I don't know how to explain this
   Does anyone who encounter this issue too?
I guess it has something to with the Serializable issue ,but I have made every List item serializable, why it looks like this??

Hi Kevin,
I answered you by mail some days ago, but just to complete the thread, I am posting the hint also here:
Custom types should be manually added to the Virtual Interface, so that they can be serialized.
Best regards,
Alexander

How do i use r/3 webservice with sneak preview (7.0.9) of developer studio.

Hi,
I am having a problem importing an r/3 webservice using adaptive rfc in the sneak preview edition of java NW2004s (7.0.9).
the webservice requries http authentication to get the wsdl file. so i have to use webservice destinations when creating my adaptive rfc model (to get the username and password boxes on the URL )
So the steps i take are :-
1. New Model
2. import adaptive webservice model
3. enter model name and package
4. local file system or url
5. Use destinations for metadata and execution & enter web service destinations (in my case 'meta' and 'exec')
6. enter wsdl location (http://-hostname-/sap/bc/srt/rfc/sap/Z_DSKTP_USR?sap-client=200&wsdl=1.1&mode=sap_wsdl)
7. enter username and password. & click next
... at this point i get 'Error loading the WSDL file'. the log shows that this due to a 401(unauthorized) error.
when i follow the same steps in 6.0.19IDE (instead of 7.0.9 IDE) it works fine.
i used a packet sniffer (ethereal) to record the network traffic and can see the Authorization header is not sent from the 7.0.9 IDE but is sent in the 6.0.19 IDE .
so i think this is a bug in the sneak preview version of the 7.0 IDE. and i am just wondering what other people think? has anyone else seen this? anyone know of a patch or work around? or seen any sap notes about it?
i am just using this to evaluate webservices and am not really worried about authentication anyway so i guess the other option is to try to make r/3 not use http authentication for the webservice app? does anyone know how to do this?
any help greatly appreciated.
regards,
rob munro.
Message was edited by:
robert munro

Sorry, but i do not understand this post at all... Can anyone explain it to me? Is he saying my IDE is running on something other than Unicode?
PS: I tried one of the Scanner constructors that takes a charset parameter. That fixed the odd output! However, every Chinese character has been replaced with a question mark. (It was a series of weird characters before i used the constructor with a charset parameter.)

ADF forms based on BPM human tasks - Invoking webservices/view objects.

Hi All,
Is anyone aware of whether the following is a valid implementation that has been carried out before.
1. ADF forms based on BPM 11G human tasks.
2.The ADF forms invoke webservices via Webservice data controls. It is pertinent to note that the webservice bring back complex data types. We've tried writing a few forms, resulting in data benig brought back, but not being able to print them to the screen.
3. The ADF forms also use View Object based on sql to bring back tables of data. If view objects are embedded within the forms, the applciation gives rise to a null pointer exception.
Considering the form will be invoked via a BPM worklist entry, is there a setting or configuration we should consider before hand. Is this feasible, is there knowledge of this being done commercially.
Any examples or information regarding the same will be immensely helpful.
Thanks and Regards,
Preethi.
NB : I have posted this in the BPM forum as well as I feel it is relevant to both BPM and ADF.

Hi Joonas.
Plese let me explain me better for your understanding
A big summary for what I meant it's the following:
1- In the procces you made, when you add the HT activity, you have to implement it, this means declare the input(s) parameters you want. This implementation create the .task file.
2- Create an application, and projects as HT you have. Each poject are based on the .task file, and automatically create a Data Control (for each project based on a .task) with all you need.
This w'll be an empty application, so you can customize it all you want. The task selected should have all the parameters previously defined. Those parameters can change if you want.
2- Create a page(s) in the task flow for the task implementation. You can even split the the payload of the task in differents pages, create your custom pages and any logic you need.
3- An important aspect is how to match these application with the HT implemented in the process. It's possible, it's a configuration en the Enterprise Manager.
4- Deploy your application
All these are explain in the book I mentioned
Th book you can find it here:
https://blogs.oracle.com/soacommunity/entry/oracle_soa_suite_11g_handbook_1
Regards Dariel.
PS: Please, let me know if you need more details.

How can I call multiple records(40) at same time as webservice ?

Hi All
My scenario is some thing like calling SOAP(Webservice) to Rfc(BAPI)
Thing is how can i call multiple records at the same time using the SOAP
adapter i.e i need to make a request to BAPI and in the BAPI response
based on the fields, i need to send to different records....it is Sync call
Can any explain me how to implement this scenario ?
Regards
Kiran lvs

HI,
Please see the below link
http://help.sap.com/saphelp_nw04/helpdata/en/42/ed364cf8593eebe10000000a1553f7/content.htm
Regards
Chilla..

Running custom webservice on Oracle 10.1.3.0 AS of Oracle eBS

Rapid Install installs Oracle AS 10.1.3.0 as part of Oracle e-Business Suite R12.
My question is: Is it possible to deploy webservices build in JDeveloper to this application server?
Iam not talking about BPEL, just a custom build webservice or a webservice generated by Jdeveloper based on an existing PL/SQL procedure.
Regards,
Gertjan.

Please see the document
Oracle Application Framework Toolbox Tutorials Release 12.1.1
Chapter 3: Supplemental Lessons --> Services Exercise explain how to create a business object service.
==========================================
Arone.Zhang / 张礼军
[email protected]
Oralce EBS技术顾问
Twitter: @aronezhang <http://twitter.com/aronezhang>
博客: http://oracleseeker.com <http://oracleseeker.com/>
==========================================

Problem in using webservice in My ADF App

hi ,OTN
I used this tutorial http://www.oracle.com/technetwork/testcontent/wsdc-085537.html to have a webservice in my ADF Application that returns Weather Application.I used Jdeveloper 11g 11.1.1.3.0. by follwing this tutorial I could get the weather Info.but the first time I run my page or the first time I press the button getWeatherBy Name after writing the place there is an error Mesage as follows
System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.Exception: Error occured when get webservices record ---> System.Data.SqlClient.SqlException: Procedure or function 'GetLatByPlace' expects parameter '@ZipcodeName', which was not supplied. at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning() at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) at System.Data.SqlClient.SqlDataReader.ConsumeMetaData() at System.Data.SqlClient.SqlDataReader.get_MetaData() at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior) at WeatherService.WeatherForecast.GetLatLonDataByPlaceName(String PlaceName) --- End of inner exception stack trace --- at WeatherService.WeatherForecast.GetLatLonDataByPlaceName(String PlaceName) at WeatherService.WeatherForecast.GetWeatherByPlaceName(String PlaceName) --- End of inner exception stack trac
when I press ok to this error Message.I could write the name of place and got Weather Info,so How can I prevent this error Message that appear every first Time the user call the page of Weather Forecast?
note : in the tutorial I noticed that it explained that there is an error Message will appear ( On the error window click OK. )
Edited by: Miar on Oct 13, 2010 6:03 AM

hi,frank
yes,the problem is that he asks about his parameter when the page is rendered for the first time,in the tutorial it prevents calling the web service before having
provided the place Name by making the refresh condition of the iterator #{adfFacesContext.initialRender} , although I did this the web Service is called,How I prevent calling it when i run my page ?
thanks shay,I will try it and tell the result
Edited by: Miar on Oct 13, 2010 8:37 AM

Invoking a webservice using WSIF Binding

Hi All,
I have few queries regarding usage of WSIF Binding in BPEL
My understanding was it is useful for calling Java Classes from BPEL Process.
Can I use WSIF Binding for invoking the webservice ?
Or the use of WSIF Binding is limited to invoking Java classes.
If we can invoke web service , Can you please let me know how to do it?
you can mail your replies to [email protected]
Any help will be immensely appreciated..
Regards,
Bhanu

First of all thanks to Jens and clemens.
From both of your replies, i learnt that we can call webservice from BPEL process using WSIF binding .
Can you provide me a bpel sample where we're using wsif binding for invoking web service?
I have one more doubt:
"WSIF java binding means, which was used to call java classes. WSIF soap binding used to call web services"
Is my understanding correct?
Can you explain a bit on WSIF Java binding?
Regards,
Bhanu

Consuming a Webservice created on WAS 6.20

Hello,
is it possible to generate a client proxy automatically on WAS 6.40 for a WSDL-description which is generated with the Webservicebrowser on a WAS 6.20?
I tried to do this but when i test the proxy i receive the following fault-message:
<ERRORTEXT>Unexpected element -el=definitions ns=http://schemas.xmlsoap.org/wsdl/</ERRORTEXT>
When i compare a generated WSDL document on 6.40 and a generated WSDL document on 6.20 i see that these documents are different. What is the reason for this differences?
Thanks for your help!

Eddy,
i created the proxy in the following way:
Enterprise Services - Webservice Library - Context Menu - Create - Proxy Object
I've typed in the URL from the Webservice Browser an then i followed the wizard. But when i am testing the proxy, it doesn't work! The error that i have explained in my first message occurs. Is here any special setting required in the wizard?
Thanks for your help!

Unable to Invoke a BPEL webservice from a java client

Hi ,
We have developed (using Jdeveloper 10.1.3.1.0) a BPEL Process which invoke a PL/SQL procedure. This BPEL process is deployed on the Oracle SOA Suite server 10.1.3.1.0.
Out third pary vendor is trying to invoke this BPEL webservice from there network.
They generated a web service proxy using WSDl URL http://afh-fut01.futurus.com:8888/orabpel/default/xxff_bankonet_service/1.0
When our third party vendors are trying to invoke our BPEL web service they are getting the following exception
calling http://afh-fut01.futurus.com:8888/orabpel/default/xxff_bankonet_service/1.0
java.rmi.ServerException:
start fault message:
java.lang.NullPointerException
:end fault message
at oracle.j2ee.ws.client.StreamingSender._raiseFault(StreamingSender.java:560)
at oracle.j2ee.ws.client.StreamingSender._sendImpl(StreamingSender.java:396)
at oracle.j2ee.ws.client.StreamingSender._send(StreamingSender.java:112)
at project1.proxy.runtime.Xxff_bankonet_serviceBinding_Stub.process(Xxff_bankonet_s
erviceBinding_Stub.java:76)
at project1.proxy.Xxff_bankonet_servicePortClient.process(Xxff_bankonet_servicePort
Client.java:56)
at project1.proxy.Xxff_bankonet_servicePortClient.main(Xxff_bankonet_servicePortCli
ent.java:39)
To explain more on this
1. From our network we are able to invoke the web service from the client generated from Jdeveloper(i.e.using the
WSDL)and also from the client generated through AXIS 1.4
2. However when the third party vendors are trying to invoke the same service
using client generated from Jdeveloper at their end they ar getting the aboe exception
3. Vendor is able to ping the SOA Suite server in our network and also send a request to our server from the browser, but while executing the client they are getting an exception
Please let me know what is the solution to this problem.
Best Regards
Meenal

Try this to verify that your process on the SOA Suite is correct:
Use the tool SoapUI (open source) to execute a request based on the WSDL of your web service. If this is correct your process is working fine. SoapUI acts as a client to call your webservice via Soap.
If the call is working, then something on the webservice-client-proxy of the third-party is wrong. Try to find out what they send as soap request.
Regards,
Marc
http://orasoa.blogspot.com

Service Desk WebService API - IctTimestamp in UTC ?

Hi all,
..I know this is quite specific, but maybe someone has come across it. In Solution Manager 7, SP24, we are implementing the WebSAervices API and in general it works ok.
There is the field IctTimestamp, which according to the WhitePaper / Docs should be sent from external system in UTC format and so it is.
But unfortunatly, Solution Manager doesn't convert this UTC time back to local time in the Service Desk, even though system timezone is set correct to UTC+4.
So we receive the timestamp in UTC date fine, but it is not converted to local time as per system setup.
Is anyone aware of this and how to address ? Sounds like a bug for me ?
Thanks a lot,
Frank

Hi Frank
I am trying to integrate the webservice using SAP PI and external ticket tool. Can you please explain your scenario how you are using the webservice in external tool. Is it using SAP PI ?. Please help

Explain Webservice

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