org.geolatte.geom.codec.HANAWktDecoder Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of geolatte-geom Show documentation

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

The newest version!

/*
 * 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;
import org.geolatte.geom.crs.CoordinateReferenceSystem;

/**
 * The HANA EWKT decoder is a variant of the Postgis EWKT decoder. The differences are that it uses a different
 * tokenizer and a different set of keywords.
 *
 * @author Jonathan Bregler, SAP
 */
public class HANAWktDecoder implements WktDecoder {

    @Override
    public  Geometry
 decode(String wkt, CoordinateReferenceSystem
 crs) {
        return new HANAWktParser<>(wkt, crs).parse();
    }
}

class HANAWktParser
 extends PostgisWktParser
 {
    private final static HANAWktDialect dialect = new HANAWktDialect();

    public HANAWktParser(String wkt, CoordinateReferenceSystem crs) {
        super(dialect, wkt, crs);
    }

    @Override
    protected void matchesOptionalZMMarkers() {
        tokenizer.skipWhitespace();
        if (tokenizer.matchesOneOf('Z', 'z').isPresent()) {
            this.hasZMark = true;
        }
        if (tokenizer.matchesOneOf('M', 'm').isPresent()) {
            this.hasMMark = true;
        }
    }
}