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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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package org.geolatte.geom.codec.support;

import org.geolatte.geom.Geometry;
import org.geolatte.geom.GeometryType;
import org.geolatte.geom.Position;
import org.geolatte.geom.crs.CoordinateReferenceSystem;

abstract public class GeometryBuilder {
    public static GeometryBuilder create(GeometryType type) {
        if (type == GeometryType.GEOMETRYCOLLECTION) {
            return new CollectionGeometryBuilder();
        } else {
            return new SimpleGeometryBuilder(type);
        }
    }

    abstract public  Geometry
 createGeometry(CoordinateReferenceSystem crs);

    abstract public int getCoordinateDimension();

    abstract public void setPositions(Holder positions);

    abstract public boolean isEmpty();
}