[Seaside] Seaside-REST with variable query fields

Esteban A. Maringolo emaringolo at gmail.com
Fri Dec 5 19:51:49 UTC 2014

I looked into the implementation before sending the email and also found
I'd need to modify WAComplexRoute to match the required path patterns.
Didn't realize I'd need to modify the WARouteContainer too, with your
explanation it's clear why.

I'll check what you suggested during the weekend to see if it works.

Thank you!

El Wed Dec 03 2014 at 7:03:44 PM, Philippe Marschall <
philippe.marschall at gmail.com> escribió:

> On Wed, Dec 3, 2014 at 6:30 PM, Esteban A. Maringolo
> <emaringolo at gmail.com> wrote:
> > I'm trying to implement a RestfulHandler to handle search based on a
> > variable set of query fields.
> >
> > E.g.:
> > <path: '/api/orders/search?field1=..&field2=...'>
> >
> > The problem is I don't know the list of fields beforehand, maybe in one
> > request I'll get both field1 & field2, but in others just field1, and/or
> > fieldN.
> >
> > Given the fact that the methods need to have as many parameters as the
> > predefined parameters in the path pragma, I couldn't find a way to
> define a
> > path to match both a request with or without query fields.
> >
> > something like:
> > <path: '/api/orders/search[?queryString]'>
> >
> > Is there a way to this?
> As long as you don't need/want queryString injection and are fine with
> a lookup of the query fields through the request context (IMHO
> queryString injection isn't that useful anyways since it would be
> unparsed) it should be possible to update the matching engine to
> ignore additional parameter matches if the scoring engine is updated
> accordingly. Here's what you need to change:
> - WAComplexRoute >> #matchesParameters:, additional parameters should
> be ignored but all parameters in the route have to be present in the
> dictionary. Basically remove the size check.
> - WARouteContainer >> #initializeWith:, the sorted collection block
> needs to be updated to first sort by path priority and then by
> parameter priority. This has to work with both WAComplexRoute and
> WASimpleRoute. A simple fix would be to split #priority into
> #pathPriority (current #priority) and #parameterPriority (number of
> parameter matches, 0 for WASimpleRoute) and then first compare by
> #pathPriority and then by #parameterPriority. You may want to remove
> #priority to make sure you catch all the senders that need to be
> updated.
> - You need to make sure that you get an error in case of conflicts, eg
> in case of
> <path: '/api/orders/search?field1=..'>
> <path: '/api/orders/search?field2=...'>
> and a query string of
> /api/orders/search?field1=..&field2=...
> an error should be signaled. If you're lucky that's already the case
> but likely you'll have to update
> #compareByPathThenContentType:thenByAccept: to take #pathPriority and
> #parameterPriority into consideration as well.
> Can you try this you and see if it does what you need?
> Cheers
> Philippe
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