org.geolatte.geom.codec.db.sqlserver.GeometryCollectionSqlServerEncoder 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.AbstractGeometryCollection;
import org.geolatte.geom.Geometry;
import org.geolatte.geom.Position;

import java.util.List;

/**
 * Encoder for GeometryCollections.
 *
 * @Author Karel Maesen
 */
class GeometryCollectionSqlServerEncoder extends AbstractSqlServerEncoder {

    private final OpenGisType openGisType;

    GeometryCollectionSqlServerEncoder(OpenGisType openGisType) {
        this.openGisType = openGisType;
    }

    public  boolean accepts(Geometry
 geom) {
        return this.openGisType.typeOf(geom);
    }

    @Override
    protected void encode(Geometry geom, int parentShapeIndex, CountingPositionSequenceBuilder coordinates, List figures, List shapes) {
        if (geom.isEmpty()) {
            shapes.add(new Shape(parentShapeIndex, -1, this.openGisType));
            return;
        }
        int thisShapeIndex = shapes.size();
        Shape thisShape = createShape(parentShapeIndex, figures);
        shapes.add(thisShape);
        if (!(geom instanceof AbstractGeometryCollection)) {
            throw new IllegalArgumentException("Expect GeometryCollection argument.");
        }
        AbstractGeometryCollection gc = (AbstractGeometryCollection) geom;
        for (int i = 0; i < gc.getNumGeometries(); i++) {
            Geometry component = gc.getGeometryN(i);
            encodeComponent(component, thisShapeIndex, coordinates, figures, shapes);
        }
    }

    protected Shape createShape(int parentShapeIndex, List figures) {
        Shape thisShape = new Shape(parentShapeIndex, figures.size(), this.openGisType);
        return thisShape;
    }

    protected void encodeComponent(Geometry geom, int thisShapeIndex, CountingPositionSequenceBuilder coordinates, List figures, List shapes) {
        AbstractSqlServerEncoder encoder = (AbstractSqlServerEncoder) Encoders.encoderFor(geom);
        encoder.encode(geom, thisShapeIndex, coordinates, figures, shapes);
    }
}