org.geolatte.geom.codec.db.sqlserver.AbstractSqlServerDecoder Maven / Gradle / Ivy

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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 - 2013 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.db.sqlserver;


import org.geolatte.geom.Geometry;
import org.geolatte.geom.codec.db.Decoder;
import org.geolatte.geom.crs.CoordinateReferenceSystem;

abstract class AbstractSqlServerDecoder implements Decoder {

    public Geometry decode(SqlServerGeometry nativeGeom) {
        if (!accepts(nativeGeom)) {
            throw new IllegalArgumentException(getClass().getSimpleName() + " received object of type " + nativeGeom.openGisType());
        }
        if (nativeGeom.isEmpty()) {
            Geometry nullGeom = createNullGeometry(nativeGeom.getCoordinateReferenceSystem());
            return nullGeom;
        }
        return createGeometry(nativeGeom);
    }

    public boolean accepts(OpenGisType type) {
        return type == getOpenGisType();
    }

    public boolean accepts(SqlServerGeometry nativeGeom) {
        return accepts(nativeGeom.openGisType());
    }

    protected abstract OpenGisType getOpenGisType();

    protected abstract Geometry createNullGeometry(CoordinateReferenceSystem crs);

    protected abstract Geometry createGeometry(SqlServerGeometry nativeGeom);

    protected abstract Geometry createGeometry(SqlServerGeometry nativeGeom, int shapeIndex);

}