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This geoLatte-geom library offers a geometry model that conforms to the OGC Simple Features for SQL specification.

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/*
 * This file is part of the GeoLatte project.
 *
 *     GeoLatte is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU Lesser General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     GeoLatte is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU Lesser General Public License for more details.
 *
 *     You should have received a copy of the GNU Lesser General Public License
 *     along with GeoLatte.  If not, see .
 *
 * Copyright (C) 2010 - 2017 and Ownership of code is shared by:
 * Qmino bvba - Romeinsestraat 18 - 3001 Heverlee  (http://www.qmino.com)
 * Geovise bvba - Generaal Eisenhowerlei 9 - 2140 Antwerpen (http://www.geovise.com)
 */
package org.geolatte.geom.codec;

import org.geolatte.geom.Geometry;
import org.geolatte.geom.Position;

/**
 * The HANA EWKT representation differs from the Postgis EWKT representation in that HANA always requires an SRID to be
 * written, even if its not specified or 0. Also, HANA uses a slightly different set of keywords.
 *
 * @author Jonathan Bregler, SAP
 */
public class HANAWktEncoder implements WktEncoder {


    @Override
    public  String encode(Geometry
 geometry) {
        return new HANAWktWriter(new StringBuilder()).writeGeometry(geometry);
    }
}

class HANAWktWriter extends BaseWktWriter {

    public HANAWktWriter(StringBuilder builder) {
        super(HANAWktDialect.INSTANCE, builder);
    }

    protected 
 void addGeometry(Geometry geometry, boolean topLevel) {
        addGeometryTag(geometry);
        if(topLevel) addGeometryZMMarker(geometry);
        addGeometryText(geometry);
    }}