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From "Tim K. (Gmane)" <>
Subject Re: possible ways of creating WSDL file
Date Wed, 23 Mar 2005 22:55:38 GMT
In an ideal world I would agree with Anne. However, consider this 
scenario: you have a team of 10+ developers working on a server side API 
that follows the rules to allow it to be easily exposed as web services. 
The API has over 200+ methods total, distributed over 20+ modules. Each 
module would be exposed as a web service, hence 20+ WSDL files. The goal 
is to have the API on the server side look exactly the same as the API 
on the client side, so in theory an application built against the API 
could be run in process on the server or remotely via web services.

Now, only a couple of these developers know anything about web services 
and even those developers are just getting their feet wet with web services.

During the development cycle the API's can (slightly) change many times 
a day and everything needs to be recompiled/regenerated. I think it's 
unreasonable in this case to edit any generated WSDL files by hand. It's 
much more reasonable to just fire an ant task that starts with the 
server side java classes, generates the WSDL's and from those the client 
side stubs. This improves the development process a lot.

I hope I'll live to see the day when the tools are good enough to 
achieve this task end to end. Obviously we are not there yet, but we are 
getting close.

Btw, this is not an imaginary scenario, it's the cruel reality I live in 
every day.


Anne Thomas Manes wrote:
> I strongly disagree with Sunil. WSDL First (TM) is the way to go. 
> I think it's okay to use java2wsdl to generate a WSDL template to
> start with, but you should always edit the generated WSDL.
> My recommendation is to use a WSDL editing wizard. Cape Clear provides
> a free one (SOA Editor). Altova and Sonic provide commercial ones.
> Anne
> On Wed, 23 Mar 2005 13:49:53 -0500, Soti, Dheeraj <> wrote:
>>Will java2wsdl create the complex type hierarchies correctly? I have a complex
>>class hierarchy (using inheritance and nested classes) and finally I ended up
>>handcoding the wsdl from scratch. Did I miss something? I've also read some best
>>practice articles talking about top down approach where u write your wsdl first
>>and then proceed.
>>-----Original Message-----
>>From: Sunil Kothari []
>>Sent: Wednesday, March 23, 2005 1:20 AM
>>Subject: Re:possible ways of creating WSDL file
>>I think of 3 ways of creating WSDL
>>1) Using java2wsdl tool
>>2) Using .jws facility
>>3) Handcode WSDL
>>I think 3) is error-prone and requires high level of understanding of
>>WSDL. 2) is also not recommended for various reasons like
>>a) No deployment descriptors are created
>>b) WSDL is not persistent and prone to changes
>>c) (This I am not sure) For overloaded methods this way of creation
>>causes problems.
>>I hope this helps.
>>Sunil Kothari
>>Valtech India
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