>> this announcement is available online at http://s.apache.org/r4


by ASF Members Martin Desruisseaux and Sergio Fernández 
The Apache Software Foundation[1] provides support for the Apache Community of 
Open Source software projects. Various recent Apache projects have a geospatial 
focus. 

One of them, the Spatial Information System (SIS) project[2], has from the 
beginning been committed to the implementation of OGC standards. SIS is a free 
software Java language library for developing geospatial applications. SIS 
enables efficient representation of coordinates for searching, data clustering, 
archiving and other spatial functions. The library implements OGC GeoAPI 
Implementation Specification 3.0[3] interfaces for use in desktop or server 
applications. The Apache SIS project recently released version 0.6 of their 
Java library, with support for ISO 19115 metadata and ISO 19111[4] referencing 
by coordinates. This library is among the first implementations of ISO 
19162[5], also published as the OGC Well-known text representation of 
coordinate reference systems[6]. Apache SIS also provides support for reading 
and writing Coordinate Reference System (CRS) objects from GML documents and 
performing map projections with those CRSs. The Apache SIS metadata model has 
been updated to the ISO 19115-1 standard published in 2015 while maintaining 
compatibility (as deprecated methods) with the older version published in 2003. 
This update also integrates the ISO 19115-2 extension for imagery. 

Recently developers of Apache Marmotta[7], an Apache Software Foundation 
project that provides an open platform for Linked Data, have been working, in 
collaboration with the Google's Summer of Code 2015, to extend their 
triplestore[8] (KiWi[9]) to support GeoSPARQL[10]. KiWi is a high performance 
transactional triplestore backend for Sesame[11] building on top of relational 
databases. It has optional support for rule-based reasoning and versioning. The 
new extension to KiWi makes use of the spatial support that PostgreSQL provides 
with the PostGIS[12] extension, providing a full open source GeoSPARQL stack. 
This new feature is expected to be shipped in the upcoming 3.4 release, 
providing new geospatial support for querying data in many of the publishing 
scenarios in which Marmotta is being used (e.g. tourism[13]). 

There is interest on organizing a dedicated geospatial track in the upcoming 
ApacheCon[14] in Vancouver. The community invites everybody interested in the 
topic to submit a talk --the Apache page on MarkMail where you can sign in to 
submit a topic is available at http://markmail.org/message/2gypkad7f5xcjzyy 


Martin Desruisseaux, Manager of R&D at Geomatys, was one of the initiators of 
the OGC GeoAPI project. Sergio Fernández is a software engineer at Redlink GmbH 
and a lecturer at the University of Applied Sciences of Salzburg. Both are 
committers and members of the Apache Software Foundation.

[1] http://www.apache.org/
[2] http://sis.apache.org/
[3] http://www.opengeospatial.org/standards/geoapi
[4] 
http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=44075
[5] 
http://www.iso.org/iso/home/store/catalogue_tc/catalogue_detail.htm?csnumber=63094
[6] http://www.opengeospatial.org/standards/wkt-crs
[7] http://marmotta.apache.org/
[8] https://en.wikipedia.org/wiki/Triplestore
[9] http://marmotta.incubator.apache.org/kiwi/introduction.html
[10] http://www.opengeospatial.org/standards/geosparql
[11] http://rdf4j.org/
[12] http://postgis.net/
[13] http://tourpack.sti2.at/
[14] http://apachecon.com/

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