Asynchronous web services

2008-09-26 Thread Raghu Upadhyayula
Hi,

 

I have a question about Asynchronous web services.



Can a Web Service client use asynchronous style when the Web
Service server is using synchronous style?



Here's an example:

I have a Web Service that is developed to work in a
synchronous style (generated the server side code using WSDL2Java with
-s option).



Can I create the Web Service client to work in asynchronous
style (generate the client side code using WSDL2Java with -a option)?

 

Thanks

Raghu



Re: Asynchronous web services

2008-09-26 Thread keith chapman
Yes you can do it that way.

Thanks,
Keith.

On Sat, Sep 27, 2008 at 2:20 AM, Raghu Upadhyayula 
[EMAIL PROTECTED] wrote:

  Hi,



 I have a question about Asynchronous web services.



 Can a Web Service client use asynchronous style when the Web
 Service server is using synchronous style?



 Here's an example:

 I have a Web Service that is developed to work in a synchronous
 style (generated the server side code using WSDL2Java with -s option).



 Can I create the Web Service client to work in asynchronous
 style (generate the client side code using WSDL2Java with -a option)?



 Thanks

 Raghu




-- 
Keith Chapman
Senior Software Engineer
WSO2 Inc.
Oxygenating the Web Service Platform.
http://wso2.org/

blog: http://www.keith-chapman.org


Asynchronous web services using Axis2 with XMLBeans binding

2008-09-08 Thread Aseem Sharma

I am developing asynchronous web services using Axis2 with XMLBeans binding. 

1)We are using this command to generate the client stubs
WSDL2Java -uri ABC.wsdl  -d xmlbeans -a

2)When calling stub's startxyz() method through our Client Program  for
asynchronous calling of our web service, the request is not going to server
side and it is not showing any client side exception.

3)But when we change _operationClient.execute(true); line in startxyz()
method of the client stub which was earlier _operationClient.execute(false);
the request went to server side.

Axis 1.4 version is used

There is one solution to it. Putting Thread.sleep(2) after the .startxx
method call works fine. But i have to send hundreds of records
asynchronysly. If I write Thread.sleep(2), It will take 20 seconds for
processing each request. I have to reduce this time as much as we can. Is
there any other way to overcome this problem? 


Thanks,
Aseem

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Re: Asynchronous web services using Axis2 with XMLBeans binding

2008-09-08 Thread Amila Suriarachchi
On Mon, Sep 8, 2008 at 8:00 PM, Aseem Sharma [EMAIL PROTECTED]wrote:


 I am developing asynchronous web services using Axis2 with XMLBeans
 binding.

 1)We are using this command to generate the client stubs
 WSDL2Java -uri ABC.wsdl  -d xmlbeans -a

 2)When calling stub's startxyz() method through our Client Program  for
 asynchronous calling of our web service, the request is not going to server
 side and it is not showing any client side exception.

 3)But when we change _operationClient.execute(true); line in startxyz()
 method of the client stub which was earlier
 _operationClient.execute(false);
 the request went to server side.

 Axis 1.4 version is used

 There is one solution to it. Putting Thread.sleep(2) after the
 .startxx
 method call works fine. But i have to send hundreds of records
 asynchronysly. If I write Thread.sleep(2), It will take 20 seconds for
 processing each request. I have to reduce this time as much as we can. Is
 there any other way to overcome this problem?


This is something to manage with you application logic. There is no need to
keep a sleep for every request.
but you have to keep the client alive until it sends all the messages.

thanks,
Amila.




 Thanks,
 Aseem

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-- 
Amila Suriarachchi,
WSO2 Inc.


Re: [Axis2] Architecture: Asynchronous Web services with Axis1 and Axis2 -

2007-11-07 Thread Suran Jayathilaka

william wallace wrote:

Hi,

So far, we have used Axis1 to create a number of Web services in my 
project. We see it works well with the request-response message 
pattern. Only one issue is that we could not have Asynchronous Web 
services. Instead, we have had to use Socket programming for those 
asynchronous in nature. (the client maintains a server Socket, after 
responding, the Web service has to initialize a client socket 
connecting to the client side program,...). The key shortcoming of 
this approach is that the socket connection must be maintained for a 
time even no data transfer in the case of event notification (the Web 
service informs back to the client side about an event happened).


Now I just switch to Axis2 and find that it supports the Non-blocking 
invocation and I can use it for those Asynchronous Web services. The 
first thing I notice is, in Axis2, there is no difference in client 
(consumer) and Web service side.


I would like to know how the Call Back mechanism has been implemented.

- if HTTP is the transport, is there an http server in the client side 
opening to wait for the call-back message from Web service ? if not, 
what is really happening ?


- if TCP is the transport, can I say that a server Socket is opened in 
the client side ? any long-running  connection between the client and 
Web services ?



Anyone has knowledge in this issue, please advise me. I do appreciate it.

Thanks in advance

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Hi William,

I believe this podcast/article should tell you a bit about asynchronous 
web services invocations in Axis2.


http://wso2.org/library/2774

Cheers!
Suran

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[Axis2] Architecture: Asynchronous Web services with Axis1 and Axis2 -

2007-11-05 Thread william wallace
Hi,

So far, we have used Axis1 to create a number of Web services in my project. We 
see it works well with the request-response message pattern. Only one issue is 
that we could not have Asynchronous Web services. Instead, we have had to use 
Socket programming for those asynchronous in nature. (the client maintains a 
server Socket, after responding, the Web service  has to initialize a client 
socket connecting to the client side program,...). The key shortcoming of this 
approach is that the socket connection must be maintained for a time even no 
data transfer in the case of event notification (the Web service informs back 
to the client side about an event happened).

Now I just switch to Axis2 and find that it supports the Non-blocking 
invocation and I can use it for those Asynchronous Web services.  The first 
thing I notice is, in Axis2, there is no difference in client (consumer) and 
Web service side. 

I would like to know how the Call Back mechanism has been implemented. 

- if HTTP is the transport, is there an http server in the client side opening 
to wait for the call-back message from Web service ? if not, what is really 
happening ?

- if TCP is the transport, can I say that a server Socket is opened in the 
client side ? any long-running  connection between the client and Web services ?


Anyone has knowledge in this issue, please advise me. I do appreciate it.

Thanks in advance

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