JASPA (JAva SPAtial) is a spatial extension for relational database systems. JASPA implements the OpenGIS Simple Features for SQL and the SQL/MM standard. JASPA potentially brings around 200 spatial functions to any relational database system that supports a full set of Java stored procedures.
In this 0.1 version JASPA is supported by PostgreSQL and H2 databases, and we are already working with HSQLDB. JASPA has a similar functionality as PostGIS 1.4, supporting spatial operators and predicates, arrays of geometries, spatial aggregates, etc.
JASPA is written in Java and is easy to extend using Java stored procedures. JASPA is licensed under the GNU GPL.
Fully written in Java
Currently uses PostgreSQL and H2 as the backend RDBMS
Possibility of migration to other Java databases
Implements SFS and SQL-MM standards
More than 200 spatial functions available
PostGIS compatible
Easy-to-extend capabilities using store procedures in Java
Use of JTS and GeoTools libraries
UMN MapSever as graphical frontend
JASPA for PostgreSQL provides spatial indexing based on PostgreSQL Gist
Spatial reference systems
Support for standard WKT and WKB formats and PostGIS EWKB and EWKT formats
Support for SHP, KML and GML as input formats
Genuine JASPA topological functions Nodelize, Cleanpolygon, Delaunay triangles, etc.
Connectors for map servers and desktop GIS applications
Geographical functions based on a spheroid
Cluster/Tolerance system
Hybrid Topology system
Topology rules
Improve 3D/4D methods
The authors of this project are:
Jose C. Martinez-Llario. Developer and project director. (1)
Marta Gonzalez-Alcaide. Tester and document builder. (1)
(1) Deparment of Cartographic Engineering, Geodesy and Photogrammetry of the Universidad Politecnica de Valencia (Spain).
Any contributor is very welcomed to join the JASPA project.
JASPA is an open source software project. JASPA is released under GNU General Public License. http://www.gnu.org/copyleft/gpl.html
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This project has been possible thanks to other open source projects. Besides to take advantage of these projects we have used their mailing lists and they helped us a lot. The JASPA team is very grateful to them:
PostGIS
The mirror which JASPA looks at. http://postgis.refractions.net/
JTS (Java Topology Suite)
JTS Topology Suite is an API of 2D spatial predicates and functions. This library is widely used in JASPA and many open source initiatives bringing the possibility to use spatial analysis to the java open source world.http://www.vividsolutions.com/jts/jtshome.htm
GeoTools
GeoTools is an open source Java library that provides tools for geospatial data. It is used used for projections, KML support and Shape to JASPA convertershttp://geotools.org/
PostgreSQL and PL/Java
PostgreSQL database http://www.postgresql.org/
PL/Java is a free add-on module that brings Java Stored Procedures to the PostgreSQL backend. http://wiki.tada.se/index.php/PL/Java
H2 and H2Spatial
A Java database and its spatial extension used at the beginning of JASPA.
H2 database http://www.h2database.com/html/main.html
HSQLDB
A Java database which probably will be supported by JASPA in the next release. http://hsqldb.org/
gvSIG
A desktop GIS which we hope it can connect to JASPA soon. http://www.gvsig.org
DocBook
DocBook (xsltproc) is required for building the documentation. http://www.docbook.org/
Apache FOP
Formatting Object Processor (FOP) is a Java based print formatter based on the XSL-FO standard. http://xmlgraphics.apache.org/fop/index.html
XML Editor
A visual XML editor. http://www.xmlmind.com/xmleditor/