[Info-vax] Restful API w/JSON client package or library on OpenVMS

[Arne Vajhøj]

On 3/21/2024 2:21 PM, Simon Clubley wrote:
> On 2024-03-21, Single Stage to Orbit <alex.buell at munted.eu> wrote:
>> On Thu, 2024-03-21 at 13:08 +0000, Simon Clubley wrote:
>>> The SAX-style parser model has long since
>>> been left behind as an acceptable way to parse JSON/XML/etc...
>>
>> I wish you hadn't mentioned that. SAX needs to do one :-<
> 
> Sorry. :-) Did I bring back some trauma memories ? :-)
> 
> In the same way that we no longer write applications in assembly language,
> I am just glad that SAX-style parsing isn't still the standard way of doing
> things these days and that we now have libraries which can build a document
> tree we can ask questions about and easily iterate through.
> 
> As mentioned above, there's a really good reason SAX has been left behind
> as an acceptable method, because the alternatives are so much better.

SAX model is "streaming push" model.

There are 4 models for reading XML/JSON - in order from easiest to
use to most difficult to use:
* binding
* DOM tree
* streaming pull
* streaming push

Web services typical use binding if the language and library
supports it.

But I would not totally discard the streaming parsers.

They are needed if the XML/JSON can't be in memory. Not the
case for web services though.

And they are often used as foundation for the other models
(DOM trees and binding).

Arne