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<?xml version="1.0" encoding="UTF-8"?>

<document>
        <header />

        <body>
                <section name="The Hibernate Spatial H2 GeoDB Provider">
                        <p>
                                The H2 GeoDB Provider adds support for H2 GeoDB to
                                Hibernate
                                Spatial. It has been tested with H2 GeoDB 0.3
                                and should work with
                                any version later than that.
                        </p>

                        <subsection name="Important notes" />
                        <ul>
                                <li>
                                        Note that H2 GeoDB does not completely implement the OGC Simple
                                        Feature Specification.
                                        Some functions that work for PostGIS or
                                        Oracle
                                        may fail to work for H2
                                        GeoDB.
                                </li>
                                <li>
                                        Note that version 0.3 does not store the SRID with the geometry.
                                        This is
                                        due to an omission in the JTS API. Version 0.4 solved this
                                        issue by
                                        extending the JTS API, but the fix was committed in the
                                        opengeo
                                        repository. To use version 0.4, you have to include the
                                        GeoTools Maven repository (
                                        <a href="http://repo.opengeo.org/com/vividsolutions/jts/1.12-SNAPSHOT/">http://repo.opengeo.org/com/vividsolutions/jts/1.12-SNAPSHOT/
                                        </a>
                                        ) and you cannot use other JTS versions.
                                </li>
                                <li>
                                        Note that EWKT byte arrays generated by GeoDB version 0.6 (with
                                        GeoDB.gToEWKB(Geometry)) seem to have redundant bytes at positions
                                        42-45, resulting in a incorrect EWKT. As a result, accessing
                                        EKWT
                                        objects in the database generated by GeoDB.gToEWKB with
                                        hibernate-spatial may give jts Parse Exceptions.
                                        <br/>
                                        See <a href="https://github.com/jdeolive/geodb/issues/10">GeoDB issue #10</a>
                                </li>
                        </ul>
                </section>
        </body>
</document>