Re: [Exist-open] How To execute a query stored in exist with SOAP

[Adam R. <ada...@de...>]

Indeed, as Dannes has mentioned, there is a SOAPServer component in =
eXist. Not only is it in SVN, but I think it was probably also in the =
last eXist release at least. Take a look in EXIST_HOME/tools/SOAPServer, =
the README file in there should be enough info to get you started.

The basic idea is that you can have an XQuery module stored in the =
database, but instead of the .xqm extension, you give it a .xqws =
extension (XQuery Web Service).
You then call the webservice in this way for its WSDL - =
http://localhost:8080/exist/servlet/db/myquery.xqws?wsdl

If you want re-useable code that can be used for SOAP and/or REST or =
anything else, the best way to do this is probably to write common code =
as modules (.xqm) anyways, and create a .xqws to include the appropriate =
modules and write wrapper functions to call the module functions. =
Basically every function in a .xqws translates to a webservice method; =
The SOAP Server will take care of generating the WSDL, parsing the =
incoming SOAP Request and executing the correct function and then =
returning a SOAP Response. Otherwise if you are only interested in =
writting XQuery for webservices then you can code your xquery directly =
in the .xqws functions.

I have not officially documented this yet as I have been trying to test =
interoperability. The initial version was developed to use =
document/literal wrapped encoding and I tested with the oXygen WSDL SOAP =
Analyser and that all works I believe. I did some testing with .Net and =
I think the results were good (sorry it was some time ago), probably =
because document/literal wrapped is the Microsoft way of doing SOAP, =
although it is becoming the un-official defacto standard now even with =
Java.

I have started refactoring the SOAPServer and making changes so that it =
can work better with othet SOAP Clients/toolkits, this means also =
supporting rpc/encoded, rpc/literal and document/literal. It seems =
ironic to me that SOAP was developed to be the solution to disperate =
systems interoperability and yet we have ended up with 5 different ways =
of doing SOAP (only 4 types mentioned here, document/encoded type is =
almost never encountered) - =
http://www.ibm.com/developerworks/webservices/library/ws-whichwsdl/

Unfortunately this refactoring has been a slow process and trying to =
ensure interoperability is even a painful process...

Anyways, you may like to try what is currently available, as I mentioned =
it should work with .Net. Let me know how you get on, if you have some =
issues I would love to know as apart from a few advanced users, this is =
not well tested.

In the meantime, I will continue my refactorings and hopefully if =
everything goes well then maybe in this eXist release or the next there =
will be a full and complete SOAPServer with documentation...

Thanks Adam.




-----Original Message-----
From: Dannes Wessels [mailto:di...@gm...]
Sent: Mon 30/07/2007 19:49
To: Paul Veuve
Cc: exi...@li...
Subject: Re: [Exist-open] How To execute a query stored in exist with =
SOAP
=20
hi,

On 7/30/07, Paul Veuve <ve...@cd...> wrote:
> What is the way to execute a query stored in exist with SOAP.

well in the upcoming release of eXist there is a very nice and
powerful feature "SOAPserver" ; There is documentation on this in SVN:

http://exist.svn.sourceforge.net/viewvc/exist/trunk/eXist/tools/SOAPServe=
r/

I know there are some pending patches on this code. It works well with
AXIS and .Net SOAP implementations (that is what I am told)

regards

Dannes