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/*
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* $Id: LineStringDecoder.java 156 2010-01-28 22:59:30Z maesenka $
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*
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* This file is part of Hibernate Spatial, an extension to the
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* hibernate ORM solution for geographic data.
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*
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* Copyright © 2009 Geovise BVBA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* For more information, visit: http://www.hibernatespatial.org/
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*/
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package org.hibernatespatial.sqlserver.convertors;
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import com.vividsolutions.jts.geom.Coordinate;
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import com.vividsolutions.jts.geom.CoordinateSequence;
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import com.vividsolutions.jts.geom.LineString;
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import org.hibernatespatial.mgeom.MCoordinate;
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class LineStringDecoder extends AbstractDecoder<LineString> {
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@Override
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protected OpenGisType getOpenGisType() {
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return OpenGisType.LINESTRING;
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}
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protected LineString createNullGeometry() {
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return getGeometryFactory().createLineString((CoordinateSequence) null);
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}
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protected LineString createGeometry(SqlGeometryV1 nativeGeom) {
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return createLineString(nativeGeom, 0, nativeGeom.getNumPoints());
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}
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@Override
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protected LineString createGeometry(SqlGeometryV1 nativeGeom, int shapeIndex) {
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int figureOffset = nativeGeom.getStartFigureForShape(shapeIndex);
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//linestring shapes have exactly one figure
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int startOffset = nativeGeom.getStartPointForFigure(figureOffset);
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int endOffset = nativeGeom.getEndPointForFigure(figureOffset);
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return createLineString(nativeGeom, startOffset, endOffset);
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}
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protected LineString createLineString(SqlGeometryV1 nativeGeom, int offset, int nextOffset) {
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Coordinate[] coordinates = nativeGeom.coordinateRange(offset, nextOffset);
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return createLineString(coordinates, nativeGeom);
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}
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private LineString createLineString(Coordinate[] coords, SqlGeometryV1 nativeGeom) {
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if (nativeGeom.hasMValues()) {
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return getGeometryFactory().createMLineString((MCoordinate[]) coords);
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} else {
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return getGeometryFactory().createLineString(coords);
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}
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}
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}
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