[DUG] Web Services

[Sean Cross - CRM]

I am not quite sure what you are asking here.  If you and new functions,
and you want to use those new functions then you will need to update the
app.  if you don't want to use the new functions then you don't need to
update the app.
 

Regards

Sean
-----------------------------
Sean Cross
Systems Development

Catalyst Risk Management
PO Box 230
Napier
Phone:   06 835 5868
Mobile:  027 276 6439
Email:   sean.cross at crm.co.nz 
http://www.crm.co.nz/

Offices in Auckland, Napier, Wellington & Christchurch

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________________________________

	From: delphi-bounces at ns3.123.co.nz
[mailto:delphi-bounces at ns3.123.co.nz] On Behalf Of Jeremy Coulter
	Sent: Friday, 26 May 2006 9:18 a.m.
	To: NZ Borland Developers Group - Delphi List
	Subject: RE: [DUG] Web Services
	
	
	
	 It wont be so much the existing functions that will change, its
more that there will be new ones added.
	My question is, if/when a new function is added, how does the
calling exe know that its ok to call it? From what I have seen, when you
add a reference to a webservice, it creates a new PAS file that has all
the functions etc in it, and therefor this is compiled into the exe, so
if I add new functions one would assume that a new calling exe needs to
be updated....which is what I want to avoid.
	 
	Jeremy
	 


		-----Original Message-----
		From: "Sean Cross - CRM" <sean.cross at crm.co.nz>
		To: "NZ Borland Developers Group - Delphi List"
<delphi at ns3.123.co.nz>
		Date: Fri, 26 May 2006 09:02:21 +1200
		Subject: RE: [DUG] Web Services
		
		
		The point of web services is that they are language and
platform agonistic.  Therefore you can call a d.n web service from D7
etc.  The restriction is that the web service must only require
parameters and results that D7 can support.  it is possible to make a
.net web service that only .net can call (thanks ms) but it is as easy
to make one that anything can accept.  You might also want to look at
using REST, http://blog.marcocantu.com/blog/soaprest.html.
		 
		I believe it is considered bad form to change the spec
of existing functions much as it is in dlls.  You should version them
instead.  Adding a new function won't affect existing apps though.
		Regards
		
		Sean
		-----------------------------
		Sean Cross
		Systems Development
		
		Catalyst Risk Management
		PO Box 230
		Napier
		Phone:   06 835 5868
		Mobile:  027 276 6439
		Email:   sean.cross at crm.co.nz 
		http://www.crm.co.nz/
		
		Offices in Auckland, Napier, Wellington & Christchurch
		
		Disclaimer:
		"The information contained in this document is
confidential to the addressee(s) and may be legally privileged. Any view
or opinions expressed are those of the author and may not be those of
CRM. No guarantee or representation is made that this communication is
free of errors, viruses or interference. If you have received this
e-mail message in error please delete it and notify me. Thank you."
		 


________________________________

			From: delphi-bounces at ns3.123.co.nz
[mailto:delphi-bounces at ns3.123.co.nz] On Behalf Of Jeremy Coulter
			Sent: Friday, 26 May 2006 8:06 a.m.
			To: delphi at delphi.org.nz
			Subject: [DUG] Web Services
			
			
			Hi All. 
			We are looking at improving some stuff at work,
and web services will be something I feel will help greatly.
			 
			What  A interested in knowing is, am I correct
in understanding that Delphi 7 can talk to a D2005 .Net webservice?
			 
			If the above understanding is correct, if I make
a change to the web service, then I need to also change the exe calling
the webservice?  i.e. if I add  new functon t the webservice, then the
caling exe needs to know abou it etc. etc.
			 
			is this correct?
			 
			 
			Thanks, jeremy

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