Re: [Exist-open] [ALPHA] RESTXQ is now in trunk

[Joe W. <jo...@gm...>]

Hi Adam,

Superb work!  I'm really looking forward to being able to use this!

> The first two items on this page have demo code zips linked under them
> that you can download - http://www.adamretter.org.uk/presentations.xml

Working from the wheel.xqm example in the XML Prague demo code zip
(http://www.adamretter.org.uk/presentations/restful-xquery_xml-prague_20120112_code.zip),
I'm having trouble getting my URL right to work with the paths defined
in restful-wheel.xqm.  Can you advise?  Here's what I've done:

I've put the wheels module and data in /db/wheels, so inside
/db/wheels/, I have restful-wheel.xqm (from the "RESTful XQuery demos"
folder) and the round.xml and square.xml files (from the "eXist-db
wheel/wheels" folder).  I also confirmed that the RESTXQ
collection.xconf appeared on its own in /db/system/config/db/.  Also,
rest:get-resource-functions() returns the following in eXide, making
me confident that the trigger has located the module with the RESTXQ
annotations:

<rest:resource-functions xmlns:rest="http://exquery.org/ns/rest/annotation/">
    <rest:resource-function xquery-location="/db/wheels/restful-wheel.xqm">
        <rest:identity namespace="http://wheelfactory.com"
local-name="create-wheel" arity="1"/>
    </rest:resource-function>
    <rest:resource-function xquery-location="/db/wheels/restful-wheel.xqm">
        <rest:identity namespace="http://wheelfactory.com"
local-name="retrieve-wheel" arity="1"/>
    </rest:resource-function>
    <rest:resource-function xquery-location="/db/wheels/restful-wheel.xqm">
        <rest:identity namespace="http://wheelfactory.com"
local-name="store-wheel" arity="2"/>
    </rest:resource-function>
    <rest:resource-function xquery-location="/db/wheels/restful-wheel.xqm">
        <rest:identity namespace="http://wheelfactory.com"
local-name="inventory" arity="0"/>
    </rest:resource-function>
</rest:resource-functions>

I'm trying to get the wheel:inventory() function to return, by calling
a URL that matches its path in the annotation:

  %rest:path("/factory/warehouse/wheel")

I first tried the following URL, since the wheel.xqm is in the
/db/wheels collection, and /db/... paths are requested at
/exist/apps/...

  http://localhost:8080/exist/apps/wheels/factory/warehouse/wheel

This returned:

  404: Problem accessing /exist/apps/wheels/factory/warehouse/wheel.
Reason:  Document /db/wheels/factory/warehouse/wheel not found

Then, thinking that perhaps the path is simply relative to eXist's
context URL, I tried:

  http://localhost:8080/exist/factory/warehouse/wheel

This returned a slightly different error:

   404: Problem accessing /exist/factory/warehouse/wheel. Reason: Not Found

I also confirmed in eXide that collection("/db/wheels")/wheel -- the
XPath called in wheel:inventory() -- returns the data from the wheels
directory.  So I'm not sure what's wrong.

I see the draft spec says that the URI in %rest:path "is considered
relative to a base URI which is implementation defined."
(http://exquery.github.com/exquery/exquery-restxq-specification/restxq-1.0-specification.html#path-annotation)

My question is: What is the eXist-implementation-defined base URI for
RESTXQ?  In other words, what URL are the %rest:path values relative
to?  Can you post a URL that *should* work with a stock installation
of eXist?

Thanks,
Joe

p.s. I'm working with eXist 2.1-dev rev. 16979.