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Introducing GeoDB

GeoDB is a spatial extension of H2, the Java SQL database. GeoDB utilizes the JTS library as its geometry engine and the Hatbox library for spatial indexing support.

Quickstart

• Download GeoDB
• Unzip the geodb-0.3-app.zip file
• Update the PATH environment variable to include geodb-0.3/bin
• Run the geodb command:

% geodb foo

• Initialize the spatial database:

@h2> CREATE ALIAS InitGeoDB for "geodb.GeoDB.InitGeoDB"
@h2> CALL InitGeoDB()

• Create a spatial table:

@h2> CREATE TABLE spatial (id INT AUTO_INCREMENT PRIMARY KEY, geom BLOB)

• Create some spatial data:

@h2> INSERT INTO spatial (geom) VALUES (ST_GeomFromText('POINT(-5 -5)', 4326))
@h2> INSERT INTO spatial (geom) VALUES (ST_GeomFromText('POINT(0 0)', 4326))
@h2> INSERT INTO spatial (geom) VALUES (ST_GeomFromText('POINT(5 5)', 4326))

@h2> SELECT ST_AsText(ST_Buffer(geom, 10)) as buffer FROM spatial;

• Create a spatial index

@h2> CALL CreateSpatialIndex(null, 'SPATIAL', 'GEOM', '4326')

• Perform a spatial query

@h2> SELECT ST_AsText(geom) FROM spatial WHERE  id IN (SELECT CAST(HATBOX_JOIN_ID AS INT) FROM HATBOX_MBR_INTERSECTS_ENV('PUBLIC', 'SPATIAL', -2, 2, -2, 2))