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Re: Categories of Web Service messages: data-oriented vs acti

• To: Michael Brennan <Michael_Brennan@A...>
• Subject: Re: Categories of Web Service messages: data-oriented vs action-oriented
• From: Paul Prescod <paul@p...>
• Date: Wed, 06 Feb 2002 00:48:38 -0500
• Cc: "'michael.h.kay@n...'" <michael.h.kay@n...>, xml-dev@l..., "'Roger L. Costello'" <costello@m...>
• References: <D7155AD41ECFD511AF4A00B0D0202CB51DFD28@MAILHOST>

Michael Brennan wrote:
> 
>...
> I think there are two advantages to this approach over having the action
> specified at the protocol layer.
> 1) You don't have to redefine how to represent the action for each protocol
> binding used.
> 2) You can have richer messages where actions apply to portions of a
> message, rather than just one action for the entire message.
> 
> However, this approach also has a disadvantage:
> 1) A message dispatcher must sniff the content of the message to discern its
> intent. A protocol-level indicator can help optimize some level of message
> dispatching, where dispatching can be done without having to parse the XML
> in the message.

Plus you've mixed "protocol" (actions) with "data" (the content of the
message). This makes it hard to use predefined vocabularies like RSS or
some industry-specific one. I think that's a big problem. Using a model
where the action is separate from the message, you can easily apply the
same action to RSS, XHTML, or HumanML ;).

 Paul Prescod

• References:
  • RE: Categories of Web Service messages: data-oriented vs action-oriented
    • From: Michael Brennan <Michael_Brennan@A...>

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