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From johann sorel <johann.so...@geomatys.com>
Subject Re: GeoSpatial Query support
Date Wed, 03 Jun 2015 15:26:47 GMT
Hello,

In geotoolkit we made a query/session api, with joint support, It uses :
- OGC Filter Encoding specification,
- SQL/MM(st_...) are just a a set of functions which are the exact same 
as those defined in OGC Filter.
- A derivate of JSR-283 : Java Content Repository  for queries and 
sessions but adapted to Features
http://www.opengeospatial.org/standards/filter

This specification is already transposed in Java in the GeoAPI project :
http://www.geoapi.org/snapshot/pending/index.html
in package : org.opengis.filter

I don't know much about apache zest, but a more pragmatic approach would 
be to get closer to Apache JackRabbit which is JCR compliant and has a 
lot of data connectors.


Johann Sorel
johann.sorel@geomatys.com


On 03/06/2015 17:12, estrada.adam@gmail.com wrote:
> Most excellent, Dr. Mattmann! @sis, we should definitely collaborate with @zest on this
one. If they are implementing simple query functionality, maybe they can take advantage of
the work Marc has already done and also use the projection support Martin has been committing.
>
> Thoughts?
> Adam
>
> Sent from my iPhone
>
>> On Jun 3, 2015, at 11:00 AM, Mattmann, Chris A (3980) <chris.a.mattmann@jpl.nasa.gov>
wrote:
>>
>> Maybe this is a good integration point for sis.apache.org?
>>
>> CC’ing the Apache SIS list for visibility
>>
>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>> Chris Mattmann, Ph.D.
>> Chief Architect
>> Instrument Software and Science Data Systems Section (398)
>> NASA Jet Propulsion Laboratory Pasadena, CA 91109 USA
>> Office: 168-519, Mailstop: 168-527
>> Email: chris.a.mattmann@nasa.gov
>> WWW:  http://sunset.usc.edu/~mattmann/
>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>> Adjunct Associate Professor, Computer Science Department
>> University of Southern California, Los Angeles, CA 90089 USA
>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>>
>>
>>
>>
>> -----Original Message-----
>> From: Jiri Jetmar <juergen.jetmar@gmail.com>
>> Reply-To: "dev@zest.apache.org" <dev@zest.apache.org>
>> Date: Wednesday, June 3, 2015 at 7:45 AM
>> To: "dev@zest.apache.org" <dev@zest.apache.org>
>> Subject: Re: GeoSpatial Query support
>>
>>> Hi Niclas,
>>>
>>> this ST_XX follows the http://en.wikipedia.org/wiki/DE-9IM and
>>> http://en.wikipedia.org/wiki/Simple_Features standards that are indeed
>>> "SQL" related. I used this expression to be similar with e.g. PostGIS,
>>> means when someone knows how to use spatial expressions on PostGIS,
>>> he should be able to understand the Apache Zest approach.
>>>
>>> But clearly I can "lowercase" the ST_Xx expressions in the code.
>>>
>>> Cheers,
>>> jj
>>>
>>> 2015-06-03 16:22 GMT+02:00 Niclas Hedhman <niclas@hedhman.org>:
>>>
>>>> Jiri,
>>>> There is one thing that bothers me; ST_Within and similar doesn't follow
>>>> the Java convention at all. I have researched and seen that many DBs
>>>> uses
>>>> this, but don't you think we should lower case st_ instead for methods?
>>>>
>>>>
>>>> Cheers
>>>> --
>>>> Niclas Hedhman, Software Developer
>>>> http://zest.apache.org - New Energy for Java


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