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asp.net webservices : Web method signature modified.
We have set of web service method already consumed by out client. Now we require to add few input parameters (int/string type) to existing web method. How does this will affect existing consumer of the service?? Please take this as urgent query. Thanks in advance
Hi Gaurav,
I tried with a test application with old proxy after modifying a web method to add a new parameter. It is still serving the request. It is not crashing. However I wish to know if it approved by MS to do? Moreover can we have overloaded web method? Thanks in advance -rajesh [quoted text, click to view] "Gaurav Vaish (www.EduJini.IN)" wrote:
> The existing clients will crash. > > I'd rather suggest that you create another web-method if the number of > existing consumers is large. > > -- > Happy Hacking, > Gaurav Vaish > http://www.mastergaurav.org > http://webservices.edujini.in > ------------------- > > > "Raj" <Raj@discussions.microsoft.com> wrote in message > news:CD9AA723-F374-41B6-A770-B9D180A6A23D@microsoft.com... > > Hi, > > We have set of web service method already consumed by out client. Now we > > require to add few input parameters (int/string type) to existing web > > method. > > > > How does this will affect existing consumer of the service?? > > Please take this as urgent query. > > Thanks in advance > > -rajesh > >
The existing clients will crash.
I'd rather suggest that you create another web-method if the number of existing consumers is large. -- Happy Hacking, Gaurav Vaish http://www.mastergaurav.org http://webservices.edujini.in ------------------- [quoted text, click to view] "Raj" <Raj@discussions.microsoft.com> wrote in message news:CD9AA723-F374-41B6-A770-B9D180A6A23D@microsoft.com... > Hi, > We have set of web service method already consumed by out client. Now we > require to add few input parameters (int/string type) to existing web > method. > > How does this will affect existing consumer of the service?? > Please take this as urgent query. > Thanks in advance > -rajesh
HI Gaurav,
Thanks for your reply first of all. See I haven't removed any parameter instead I have added one. Min occurance is 1 for int and 0 for string param and both I have tried and found it working. Only concern is whether this is suggest approach, as you're saying no, which is why I think the existing set of web methods should not get disturbed. Thanks once again -rajesh [quoted text, click to view] "Gaurav Vaish (www.EduJini.IN)" wrote:
> Hi Rajesh, > > > to add a new parameter. It is still serving the request. It is not > > crashing. > > What's the new parameter? > Does it have a "minoccurs='0'"? If it is then the parameters can definitely > be omitted. > By default, the minoccurs=maxoccurs=1 in WSDL. > > > However I wish to know if it approved by MS to do? > > Don't know about MS but I'd personally not like that. > > > Moreover can we have overloaded web method? > > Yes. Well, techinically no. > But from programming perspective, yes, you can do that. All you need is to > give a different name to the new operation. > And this is what I would suggest. > > > -- > Happy Hacking, > Gaurav Vaish > http://www.mastergaurav.org > http://www.edujini.in > http://webservices.edujini.in > ------------------- > >
Hi Raj,
[quoted text, click to view] > Thanks for your reply first of all. Always welcome :-) [quoted text, click to view] > See I haven't removed any parameter instead I have added one. Min > occurance > is 1 for int and 0 for string param and both I have tried and found it > working. What I meant was that for the new parameter is the minoccurs is 0 then in that case the old proxy would not fail, because the parameter is optional. The deserializer (SOAP Formatter) would give the paramter its default value (null for reference types, 0 for numeric types etc) [quoted text, click to view] > Only concern is whether this is suggest approach, as you're saying no, > which > is why I think the existing set of web methods should not get disturbed. If you have made the new parameters with minoccurs=0 then no problems as far as usage is concerened. However since the proxy is not with the latest WSDL, it would not be recommended. Infact, the recommended way is to be backward compatible. So, give the new method (method with new parameters) a new name -- in "operations" section. -- Happy Hacking, Gaurav Vaish http://www.mastergaurav.org http://www.edujini.in http://webservices.edujini.in -------------------
[quoted text, click to view]
> What do you mean my in "operations" section. can you pls explain in > detail. Oops.. I meant the "operation" entry in "portType" in the WSDL must be with a different name. -- Happy Hacking, Gaurav Vaish | http://www.mastergaurav.org http://www.edujini.in | http://webservices.edujini.in -------------------
Hi Gaurabh,
Thanks a lot for helping me out. Only thing i didn't get out of mail is last statement. You say "Infact, the recommended way is to be backward compatible. So, give the new method (method with new parameters) a new name -- in "operations" section." What do you mean my in "operations" section. can you pls explain in detail. I ping you a lot for this. Just last help for now. Thanks -rajesh [quoted text, click to view] "Gaurav Vaish (www.EduJini.IN)" wrote:
> Hi Raj, > > > Thanks for your reply first of all. > > Always welcome :-) > > > See I haven't removed any parameter instead I have added one. Min > > occurance > > is 1 for int and 0 for string param and both I have tried and found it > > working. > > What I meant was that for the new parameter is the minoccurs is 0 then > in that case the old proxy would not fail, because the parameter is > optional. The deserializer (SOAP Formatter) would give the paramter its > default value (null for reference types, 0 for numeric types etc) > > > Only concern is whether this is suggest approach, as you're saying no, > > which > > is why I think the existing set of web methods should not get disturbed. > > If you have made the new parameters with minoccurs=0 then no problems as > far as usage is concerened. However since the proxy is not with the latest > WSDL, it would not be recommended. > > Infact, the recommended way is to be backward compatible. So, give the > new method (method with new parameters) a new name -- in "operations" > section. > > > -- > Happy Hacking, > Gaurav Vaish > http://www.mastergaurav.org > http://www.edujini.in > http://webservices.edujini.in > ------------------- > >
Hi Rajesh,
[quoted text, click to view] > to add a new parameter. It is still serving the request. It is not > crashing. What's the new parameter? Does it have a "minoccurs='0'"? If it is then the parameters can definitely be omitted. By default, the minoccurs=maxoccurs=1 in WSDL. [quoted text, click to view] > However I wish to know if it approved by MS to do? Don't know about MS but I'd personally not like that. [quoted text, click to view] > Moreover can we have overloaded web method? Yes. Well, techinically no. But from programming perspective, yes, you can do that. All you need is to give a different name to the new operation. And this is what I would suggest. -- Happy Hacking, Gaurav Vaish http://www.mastergaurav.org http://www.edujini.in http://webservices.edujini.in -------------------
Hi Raj,
My advice would be to overload your existing Web Method by using the MessageName property of the WebMethod attribute and refactor the other original Web Method so you avoid duplicating code. Simon. [quoted text, click to view] "Raj" <Raj@discussions.microsoft.com> wrote in message news:53ADAB69-823A-4689-92A0-98007A0ED86C@microsoft.com... > Hi Gaurabh, > Thanks a lot for helping me out. > Only thing i didn't get out of mail is last statement. > > You say "Infact, the recommended way is to be backward compatible. So, > give > the > new method (method with new parameters) a new name -- in "operations" > section." > > What do you mean my in "operations" section. can you pls explain in > detail. > I ping you a lot for this. Just last help for now. > Thanks > -rajesh > > > > "Gaurav Vaish (www.EduJini.IN)" wrote: > >> Hi Raj, >> >> > Thanks for your reply first of all. >> >> Always welcome :-) >> >> > See I haven't removed any parameter instead I have added one. Min >> > occurance >> > is 1 for int and 0 for string param and both I have tried and found it >> > working. >> >> What I meant was that for the new parameter is the minoccurs is 0 >> then >> in that case the old proxy would not fail, because the parameter is >> optional. The deserializer (SOAP Formatter) would give the paramter its >> default value (null for reference types, 0 for numeric types etc) >> >> > Only concern is whether this is suggest approach, as you're saying no, >> > which >> > is why I think the existing set of web methods should not get >> > disturbed. >> >> If you have made the new parameters with minoccurs=0 then no problems >> as >> far as usage is concerened. However since the proxy is not with the >> latest >> WSDL, it would not be recommended. >> >> Infact, the recommended way is to be backward compatible. So, give >> the >> new method (method with new parameters) a new name -- in "operations" >> section. >> >> >> -- >> Happy Hacking, >> Gaurav Vaish >> http://www.mastergaurav.org >> http://www.edujini.in >> http://webservices.edujini.in >> ------------------- >> >> >>
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