Spatial JDBC

One of H2GIS’s big-picture goals is to provide a common interface to H2 and PostGIS for Geometry data.

For convenience, the spatial-utilities package provides wrappers that facilitate using the Java Database Connectivity (JDBC) API in the presence of Geometry fields.

Example

DataSources and Connections must be wrapped:

DataSource wrappedDataSource =
    SFSUtilities.wrapSpatialDataSource(originalDataSource);
Connection wrappedConnection
    SFSUtilities.wrapSpatialConnection(originalConnection);

ResultSets must be unwrapped into SpatialResultSets in order to access Geometry fields:

SpatialResultSet rs = st.executeQuery(
    "SELECT the_geom FROM mygeomtable").
        unWrap(SpatialResultSet.class);
rs.next();
Geometry myGeom = rs.getGeometry("the_geom");

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