Implement asynchronous web calls

how java going to implement asynchronous web calls in a java based web service

Are all of the result handlers getting called?
Declare fault handlers as well, perhaps that will give you
more information.
I call multiple operations against the same WebService
instance and the same Web Service (implemented in VB.net)with no
chaining, and have no problems
Tracy

Similar Messages

Calling a asynchronous web service method

I am designing a game using web services(asp.net)
one player write to array and waite till other modify that
array.Assume i am player 1 and wait till player 2 modify array
in web service.Writing to array part is working.But reading part
is not working .I implement asynchronous call to web service
call reLabelAsync and pass argument 1.That means i am player 2
modify the array and return to my program onces other player(player 1)
modify the array.And modify my program according his updates.
private void jLabel1MouseClicked(java.awt.event.MouseEvent evt) {
jLabel1.setText("O");//this my player
// jProgressBar1.setIndeterminate(true);
writeArra(2,1);//this is working
reLabelAsync(1);
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new NewJFrame().setVisible(true);
public void reLabelAsync(int player){
// Call Web Service Operation(async. callback)
as.Service service = new as.Service();
as.ServiceSoap port = service.getServiceSoap();
// TODO initialize WS operation arguments here
javax.xml.ws.AsyncHandler<as.ReLabelResponse> asyncHandler = new javax.xml.ws.AsyncHandler<as.ReLabelResponse>() {
public void handleResponse(javax.xml.ws.Response<as.ReLabelResponse> response) {
// java.awt.EventQueue.invokeLater(new Runnable() {
// public void run() {
String s;
try {
// TODO process asynchronous response here
s = response.get().reLabelResult();
s=removeTags(s);//this to remove tags.working
System.out.println(s);
if (s=="1"){
jLabel1.setText("X");//update my program
else{
jLabel2.setText("X");//update my program
} catch(Exception ex) {
// TODO handle exception
jProgressBar1.setIndeterminate(false);
can some one please help me. I try to call asynchronous method in loop.
I think it's the way to do this. But it didn't work.Thanks..

Looking a bit at your history here... this is the fourth go around at least for dancing around this question.
To summarise the advice given to you previously "Please stop blathering on about asynchonous blah blah and start by sending and recieving a message correctly"
You really seem way over your head here. An empty catch block is a bad bad bad sign. You can run before you can walk and right now you're having problems crawling.

Implementation of Asynchronous Web Services using JDeveloper

Various articles and tutorials, which I have read, are talking about asynchronous BPEL processes. These asynch BPEL processes are result of the orchestration of different synch and asynch atomic services (web services in specific). There are even tutorials as part of Oracle SOA Suite and JDeveloper explaining how to consume asynchronous services in a BPEL process. Well and good.
But unfortunately I haven’t seen any tutorial or article talks about the implementation of asynchronous web services (How to implement an asynchronous service?). All what they talk about is the consumption side of it and the applicability of WS-Addressing or Correlation ID for the consumption of the Service.
As part of my research, I delved further into the sample BPEL processes comes out with Oracle BPEL Process Manager. For example; I have had a look into the Asynchronous Loan Processor process, where it is orchestrating a Synch Credit Rating Service and three asynch services namely Star Loan, United Loan and American Loans. But as I delved down into those, I realized that these services are simply BPEL Processes where it is implemented as a sequence of Receive, Assign and Invoke activities, where each of the activities does the following.
Receive -- Receives the request from the client
Assign -- Does some manipulation on the Input variable and set the output variable
Invoke -- Invokes the client back (call back)
These kinds of asynch services are pretty fine to demonstrate theory.
But if we put ourselves more into practical scenarios, where we invoke a service from some application and the result of that invocation shall happen after some time (minutes to hours) in the form of a callback. In that case we WON’T be able to realize the service simply by a simple BPEL Process, rather we will have to implement as a Web Service with two port types implemented, where one port type is for the request and another one for the callback.
I do understand these kinds of services can be implemented using JAX-WS.
Question Here: How I do it using Oracle JDeveloper and Oracle Application Server???
If anyone have done it, the REAL implementation of ASYNCH Web Services *(NOT BY USING BPEL or BPEL Wrapper)* using JDeveloper to deploy on Oracle Application Server or on Oracle SOA Suite, please post the know-how. If someone else is interested in taking it forward, we can take it further together.
-Sudheer
P.S: I am NOT at all interested in theory, as I had enough. Here I don’t want to be Conceptual; rather I am talking about hands-on.

Hi Sudheer,
I am not sure if this will help you
If you take Oracle SOA Suite Order Booking Tutorial and go to Chapter 5 Creating the CreditService Project ( http://download.oracle.com/docs/cd/B31017_01/core.1013/b28937/creditservice.htm ), you learn how to create a synchronous Web service from a WSDL file.
If you take the wsdl and delete output and fault tags (you can see it below) and follow the steps you'll generate an asynchronous web service.
The generated Java method will be a void method
public class ValidateCreditCardImpl {
public void verifyCC(CreditCard creditCard) {
Inside this void method you can try to call to a Receive BPEL Activity.
I hope this will be useful . Regards,
J
<definitions targetNamespace="http://www.globalcompany.com/ns/credit"
xmlns="http://schemas.xmlsoap.org/wsdl/"
xmlns:tns="http://www.globalcompany.com/ns/credit"
xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
xmlns:types="http://www.globalcompany.com/ns/credit.xsd">
<types>
<schema targetNamespace="http://www.globalcompany.com/ns/credit.xsd"
xmlns="http://www.w3.org/2001/XMLSchema"
xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/">
<complexType name="CreditCard">
<sequence>
<element name="ccType" type="string"/>
<element name="ccNum" type="string"/>
</sequence>
</complexType>
<element name="CreditCard" type="types:CreditCard"/>
<element name="valid" type="boolean"/>
<element name="error" type="string"/>
</schema>
</types>
<message name="CreditCardValidationRequestMessage">
<part name="CreditCard" element="types:CreditCard"/>
</message>
<message name="CreditCardValidationResponseMessage">
<part name="valid" element="types:valid"/>
</message>
<message name="CreditCardValidationFaultMessage">
<part name="error" element="types:error"/>
</message>
<portType name="ValidateCreditCard">
<operation name="VerifyCC">
<input message="tns:CreditCardValidationRequestMessage"
name="CreditCardInfo"/>
</operation>
</portType>
<binding name="ValidateCreditCardSoapHttp" type="tns:ValidateCreditCard">
<soap:binding style="document"
transport="http://schemas.xmlsoap.org/soap/http"/>
<operation name="VerifyCC">
<soap:operation soapAction="http://www.globalcompany.com/ns/credit/VerifyCC"/>
<input name="CreditCardInfo">
<soap:body use="literal" parts="CreditCard"/>
</input>
</operation>
</binding>
<service name="CreditService">
<port name="ValidateCreditCardServiceSoapHttp"
binding="tns:ValidateCreditCardSoapHttp">
<soap:address location="http://localhost:8888/CreditService"/>
</port>
</service>
</definitions>
Edited by: user10262974 on 30-mar-2009 16:19

Asynchronous web service call from Redwood

Hi Everyone,
Build version M33.104.
We have a scenario where we have to call an asynchronous web service.
From the documentation i understand that the Redwood job will be in status Running until the web service completes.
How does the call back work from the web service to Redwood? How does Redwood know the asynchronous web service job completed?
From the documentation, the per-requisite is:
callback to UpdateJob1 web service at ServerAddress with JobId and FinalStatus as Out parameters
Should i create two out parameters for the web service job definition in Redwood? one JobId and another FinalStatus?
How do i get the URL to UpdateJob1 web-service, so that i can make my web service, call it, to update the Redwood job that called it?
thanks
Nanda

Hi HP,
I included the following snippet in job source:
//Set completion strategy to external
jcsJobContext.setCompletionStrategy(CompletionStrategyType.External);
I get the following error when compiled:
JCS-102183: Compile failed for Job Definition SOAP_GlobalWeatherSoap_GetCitiesByCountry (Latest Version): SOAP_GlobalWeatherSoap_GetCitiesByCountry.java:user code 24:40:cannot find symbol symbol : variable CompletionStrategyType location: class com.redwood.scheduler.custom.SOAP_GlobalWeatherSoap_GetCitiesByCountry jcsJobContext.setCompletionStrategy(CompletionStrategyType.External);
I am not able to find any information from the API documentation on the method setCompletionStrategy, so I'm not able to figure what type of variable am i passing, so that i can initialize it. Please shed some light on it.
Also there is no path called Scripting > Built-In Web Services
I have only Scripting>Published Web Services
Thanks
Nanda

Is it possible to call asynchronous Web Service using Adaptive WS model?

Hello,
I was trying to call asynchronous web service and after execution exception has arised
java.lang.NullPointerException
    at com.sap.tc.webdynpro.model.webservice.model.WSGenericModelClassExecutable.fillOutputParametersToMc(WSGenericModelClassExecutable.java:281)
    at com.sap.tc.webdynpro.model.webservice.model.WSGenericModelClassExecutable.execute(WSGenericModelClassExecutable.java:93)
    at com.sap.tc.webdynpro.model.webservice.gci.WSTypedModelClassExecutable.execute(WSTypedModelClassExecutable.java:46)
    at at.gov.bmf.demo.comp.employee.EmployeeDemo.ok(EmployeeDemo.java:242)
    at at.gov.bmf.demo.comp.employee.wdp.InternalEmployeeDemo.ok(InternalEmployeeDemo.java:285)
I have NWDS 7.0.
How can I set model, to avoid binding web service response to model?
Thanks.

I just ran into this issue, same exact problem.
The quick and dirty workaround I did, after trying out several other things to make sure I didn't do anything wrong to cause this problem, was to just catch the nullpointer, and then go along my merry way.
try{
     query.execute();
catch(NullPointerException e){
     //we get a worthless error here from Webdynpro, so we just ignore it. Not pretty. But unavoidable
If someone else has any other solution, I would love to hear them.
This is on NW7.0 SP15
/Björn

How to develop and call Asynchronous web service

Hi All,
I need to have a java web service that will be called asynchronously.
That should execute, once triggered and caller shouldnt need to wait till its completion.
How to develop and call asynchronoue web service ?
Thanks
Saikrishna

Let your web service start its own background thread (*) somehow and move your business logic from web service to this thread. Then you can return from your web service. The client won't be blocked and your application will run on your server after service callout will be finished.
I hope that's what you need. Anyway, there is only "asynchronous communication" and nothing like "asynchronous web service". At least from HTTP point of view, every call is synchronous - you have request and response.
(*) You shouldn't start your own thread since you are in JEE world. Look at documentation for your container. E.g. for weblogic there are workers you can use this way. Or you can choose the other way. I hope that for any container you can just enqueue your web service request to any JMS queue and move your business logic to an appropriate MDB. Then, your web service will be just a simple JMS producer and your web service client won't be forced to wait for business logic to finish.
Last but not least, next time choose a better forum. :-)

Asynchronous Web Services in BEA

I need to build an asynchronous web services SOAP message reciever and an asynchronous
web services SOAP message sender. Over HTTPS.
I know how I would do it with JAXM and the Sun RI, but can not seem to find any
implementation or equivelent in WebLogic (though many of the interfaces and abstract
classes are in the BEA jar files). We are on WebLogic 7.

I don't understand what you mean in step 5 that the client does not change. I
want the client to send a SOAP message instead of call a remote process.
Steve
"manoj cheenath" <[email protected]> wrote:
7.0 supports one-way and it is same as in 8.1.
You got the steps to write a one-way service right.
Here is it again:
1. write the backend component. The method
that you want to make one-way should return void.
2. Either run servicegen or autotype+source2wsdd
to generate the XML codecs and web-services.xml
DD file.
3. edit the DD file to change invocation-style as
shown below.
<operation name="helloOnewayWorld"
invocation-style="one-way"...
4. package and deploy.
5. There is no change required on the client side. Client
will knows that an operation is one-way by looking at
the WSDL.
-manoj.
"Steve Watson" <[email protected]> wrote in message
news:[email protected]...
Can you send me the WL 8.1 example? How has support for one way messagingchanged
in 8.1? Would there be any advantage for us to move to 8.1?
Thanks everyones help so far. I am trying to assemble the rules oncreating one
way messages - from this thread and bits and peices in the documentationI
have
found:
"a document-oriented Weblogic Web Service operation can have only oneparameter,
of any supported data type"
"The backend component that implements the operation must explicitlyreturn void."
"You specify this type of behavior with the invocation-style attributeof
the
<operation> element in web-services.xml"
Have I missed anything?
Steve Watson
"manoj cheenath" <[email protected]> wrote:
You need to set invocation-style="one-way" in the
operation element of the web-services.xml dd file [1]
You can use source2wsdd ant task to generate this DD [2].
I dont have an example that runs on 7.0. But here is an
example that works with 8.1.
-manoj
[1] http://edocs.bea.com/wls/docs70/webserv/wsp.html#1001373
[2] http://edocs.bea.com/wls/docs70/webserv/anttasks.html#1080421
"Steve Watson" <[email protected]> wrote in message
news:[email protected]...
I can find very little in the documentation on how to do this -
is
there a
cook
book?
Steve Watson
"manoj cheenath" <[email protected]> wrote:
WLS only supports JAX-RPC. One can do one-way invokes
using JAX-RPC. So, you can implement your receiver as a
web service that accept one way invokes.
Will this fit your use case?
-manoj
"Steve Watson" <[email protected]> wrote in message
news:[email protected]...
I need to build an asynchronous web services SOAP message recieverand an
asynchronous
web services SOAP message sender. Over HTTPS.
I know how I would do it with JAXM and the Sun RI, but can not
seem
to
find any
implementation or equivelent in WebLogic (though many of the
interfaces
and abstract
classes are in the BEA jar files). We are on WebLogic 7.
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end

11G - invoking an asynchronous Web service that is not a BPEL process

Hi all,
Is there an 11G example of implementing and invoking an asynchronous Web service that is not a BPEL process ? . In 10g there is an example for Axis web service (Oracle_Home\integration\orabpel\samples\interop\axis\BPELCallingAsyncAXIS ) but I can't find anything related to 11G so far.
Thanks in advance,
sasha

Hey Chris.
I am just starting to write a jcd that calls an external web service but cannot find any sample code nor instructions on how to do it in the supplied documentation. Could you send me a code sample from your one?
Cheers
Matt

Invoking Asynchronous Web Service from BPEL Process

Hi,
I have been working on the BPEL Process Manager for some time and now facing problem in invoking asynchronous web service from a BPEL Process. I have implemented a web service in Java using Axis but wasn't able to invoke it.
I have gone through all the meterial available on this site but couldn't get any great help.
Can some one help me in resolving this issue. A pointer to any example or sample material/tutorial will be appreciated.
thanks
Farooq

I do the same thing.
Take wsdl from axis and save it somewhere.
Then you can create a standard project in Oracle BPEL PM. Create partnerlink, give a name and click on first icon to take your wsdl. It will add some needed code, you answer always yes. Then you can create receive, assign, invoke, assign and callback or similar and deploy it.
Try it through BPEL Console...
Ema

Asynchronous Web Service PI 7.1

Hey guys,
currently we are trying to configure and consume the enterprise services of SAP Transportation Management 7.0. These services use a asynchronous communication method and were created by SAP.
I'm very new in this field, I couldn't find any guides that describes how to configure this services with PI. It seems as if I can't use a direct communication method without PI. That's only possible when services use a synchronous communication method.
Maybe you can give me a hint how to start or refer me to a guide in SDN?
Thanks for help and
kind regards,
Christian.

Hi Abishek,
thanks for your answer. The problem is, that the service interfaces in the backend system don't have any web service definition. But for direct access (without any PI) I need the web service definition and have to make these services availbale at runtime (via SOA Manager or WSCONFIG) or am I wrong?
I got this information from the following links:
Direct call of Asynchronous web service
Re: Why some proxy interface not defined as web service?
Kind regards,
Christian

Making an asynchronous method call in Oracle Weblogic Workshop 10.3.2

Hi,
Need to make a non blocking asynchronous method call from my application.
There is an http url which i need to call but in asynchronous way.
example:
URL myPage = new URL("http://www.mypage.com/");
URLConnection yc = myPage.openConnection();
but the method to be invoked in non blocking or asynchronous way, so that the thread doesn't get stuck when the server of the target url ( http://www.mypage.com) is not working.
regards
pramod
mumbai/India.

Hi Pramod,
Well in generally all the Synchronous call only if you want to achieve asynchronous method calls use Web-services method call.
Here is link which help you to achieve your task.
http://docs.oracle.com/cd/E11035_01/wls100/webserv_adv/asynch.html
Regards,
kal

Asynchronous web services support?

Hi all
Please advice is async web service calls are supported in siebel crm on demand. Is web services are configurable through admin interface to support asynchronous?
Thank you.

Any Information on Asynchronous Web Services request???

Does ws adapter only work with asynchronous web service?

Hi all,
can you please confirm whether or not ws adapter (PI 7.1) only works with asynchronous web service?
I have created an async. outbound service interface in PI 7.1, generated the client proxy in ECC, created an web service based on the proxy, wrote a test program to call the web service (PI scenario uses ws adapter in the sender CC). Everything works fine.
Then I did the same thing with sync. outbound service interface. I got exception while calling the web service in ECC.
I've heard that ws adapter is designed for async. communication. Does it mean that it won't work with sync. web service?
I haven't seen any official SAP document saying taht ws adapter only works for async. web service. If you have any, can you please share it?
Thanks
Jayson

Thank you all for your information.
The error I got when calling the proxy with logical port (web service) is:
SOAP:1,007 SRT: Unsupported xstream found: ("HTTP Code 404 : Not Found")
I will debug it to see what exactly happens. And will keep you guys updated.
Just debugged, the error is because the http header's content type is text/html while it should be test/xml. However this type is set by the ws runtime, not by the application. Anybody has an idea about this?
Jayson
Edited by: Jayson on Feb 18, 2009 10:04 AM
Edited by: Jayson on Feb 18, 2009 12:11 PM

Can I consume Asynchronous Web Services from WD?

We have some asynchronous web services running on XI, my doubt is if I can consume those web services in my WebDynpro application...
Any ideas... thanx in advance.
JV

Hi Raja,
Following patterns will likely give you a good idea of the type of problems you will have to address in real-world apps involving interactions with async Web services. I would encourage you to make the leap to studying BPEL4WS (and possibly WS-Transaction as well if you have true transactional requirements).
App servers are at the core synchronous engines while BPEL4WS calls for asynchrony top to bottom. Saying that, it is possible to create an orchestration engine (as a J2EE container) on top of an app server to deliver orchestration infrastructure that deals with asynchrony, exception handling, long-running transactions, to enable developers to focus on the orchestration logic (i.e. BPEL) rather than re-invent the infrastructure wheel for each application built.
Take a look at the Q&A content here, hope it helps.
http://searchwebservices.techtarget.com/ateAnswers/0,289620,sid26_cid492833_tax292928,00.html
Doron\

Example of Asynchronous Web Service Using Oracle APIs

Greetings,
Is there any tutorial, section or example of Oracle, that explains clearly, how to create an Asynchronous Web Service using Oracle APIs.
Thakns in advance for your help.-

Does this help:
http://niallcblogs.blogspot.com/2009/03/calling-async-bpel-process-from-jdev.html

Implement asynchronous web calls

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