[OSGeo-Standards] [Requests] JSON in OGC standards (REST API Candidate Standard)

Simon.Cox at csiro.au Simon.Cox at csiro.au
Wed Jul 25 07:12:22 PDT 2012


The current status of the GeoServices document is "Request for Comment", so a Change Request would be premature!

At this stage in the process the approriate thing to do is provide your feedback so that the SWG can consider your input.
This is not an adopted spec by OGC yet.


While it is common practice, it is not actually a requirement for adoption that a proposed standard has been used in a testbed.

On reference implementations: you might like to look at the reports from recent OGC TC Plenaries.
The issue of "Reference Implementations" has been discussed.
There is an expectation that an open source reference implementation is available, but if one does not become available in a timely manner (I think it is 6 mnths) and there is a closed source reference implementation, then I think the absence of the open-source variant is no longer allowed to hold up adoption.
(details from memory here ...)

Simon Cox
Research Scientist
CSIRO Earth Science & Resource Engineering

Phone: +61 8 6436 8639 | Fax: +61 8 6436 8555 | Mobile: 0403 302 672
simon.cox at csiro.au<mailto:simon.cox at csiro.au> | www.csiro.au<http://www.csiro.au/>
Address: ARRC, PO Box 1130, Bentley, WA 6102, Australia

From: requests-bounces+simon.cox=csiro.au at lists.opengeospatial.org [requests-bounces+simon.cox=csiro.au at lists.opengeospatial.org] On Behalf Of Cameron Shorter [cameron.shorter at lisasoft.com]
Sent: Wednesday, 25 July 2012 6:51 AM
To: requests at lists.opengeospatial.org
Cc: Volker Mische; standards at lists.osgeo.org
Subject: Re: [Requests] [OSGeo-Standards] JSON in OGC standards (REST API Candidate Standard)

As an OGC member (from LISAsoft), I would like to second Volker's comment's below regarding GeoJSON.

I would also like to ask:
* Has the REST API standard been tested amongst multiple client and server applications, as is usually done in OGC Open Web Services Testbeds?

* Is there an Open Source reference implementation of the REST API standard, as has been the case for most (all?) OGC standards to date.

I'm nervous that the proposed REST API standard may be supported by one vendor, but has not been given the attention required to be adopted broadly by other applications.

On 24/07/2012 7:57 PM, Volker Mische wrote:

Hi all,

I've just discovered that the upcoming GeoServices REST API [1] standard
doesn't make use of GeoJSON, but has it's own JSON format for geometries.

I'm well aware that GeoJSON is not an OGC standard, but no one can argue
that it's not widely used. The objective of the GeoServices REST API is
to be backwards compatible to the ESRI implementation. This of course
makes sense for ESRI, but is it really what the OGC wants/is about?

Does the OGC really want to have a standard with JSON encoded geometries
which are not compatible to an already existing specification?

"Widely used" is hard to put into numbers, but I think it this case, we
could just count how many GeoJSON parsers out there, and how many
GeoServices REST API JSON encoded geometry parsers are out there.

Would it make sense to file an official change request? Or is it not
worth the hassle as it would be taken down immediately, as it is a
backwards incompatible change?

[1] http://www.opengeospatial.org/standards/requests/89

Standards mailing list
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On 20/07/2012 4:31 AM, announce at opengeospatial.org<mailto:announce at opengeospatial.org> wrote:

 [cid:part1.03060201.05050204 at lisasoft.com] <http://www.opengeospatial.org/>



Contact:  info at opengeospatial.org<mailto:info at opengeospatial.org>

OGC Seeks Comments on GeoServices REST API Candidate Standard

19 July 2012. The Open Geospatial Consortium (OGC®) seeks public comment on the candidate OGC GeoServices REST API standard. The GeoServices REST Application Programming Interface (API) provides a standard way for web clients to communicate with geospatial technologies, such as Geographic Information System (GIS) servers, based on Representational State Transfer (REST) principles.

Using this API, clients, such as a web browser application, issue requests to resources on the server identified by structured Uniform Resource Locators (URLs). The server responds with map images, text-based location details or other representations of geospatial information.  From a services perspective the API offers a mechanism to interact with map, image and feature services and perform geospatial analysis. This JavaScript Object Notation (JSON)-based, RESTful API is intended to make implementing servers instantly usable by developers working with widely used REST-based scripting and programming languages, as well as mobile platforms. End users can then use these developers' Web applications to discover and access the services and use them in their workflows.

In early 2011, Esri contacted the Open Geospatial Consortium about submitting the GeoServices Rest API as a candidate OGC standard. This submission was approved through the OGC process and then a Standards Working Group (SWG), composed of many OGC members, performed a detailed review and rewrote the API as an OGC interface standard, removing Esri-specific software references. The OGC’s adoption of this candidate standard will provide the wider Web developer community with additional standards-based choices for leveraging geospatial information.

The candidate OGC GeoServices REST API standard documents are available for review and comment at http://www.opengeospatial.org/standards/requests/89.

The closing date for comments will be 18 August  2012.

The OGC is an international consortium of more than 445 companies, government agencies, research organizations, and universities participating in a consensus process to develop publicly available geospatial standards. OGC Standards support interoperable solutions that "geo-enable" the Web, wireless and location-based services, and mainstream IT. OGC Standards empower technology developers to make geospatial information and services accessible and useful with any application that needs to be geospatially enabled. Visit the OGC website at http://www.opengeospatial.org/contact.


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Cameron Shorter
Geospatial Solutions Manager
Tel: +61 (0)2 8570 5050
Mob: +61 (0)419 142 254

Think Globally, Fix Locally
Geospatial Solutions enhanced with Open Standards and Open Source

Cameron Shorter
Geospatial Solutions Manager
Tel: +61 (0)2 8570 5050
Mob: +61 (0)419 142 254

Think Globally, Fix Locally
Geospatial Solutions enhanced with Open Standards and Open Source

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