org.postgis.LinearRing Maven / Gradle / Ivy
/*
* LinearRing.java
*
* PostGIS extension for PostgreSQL JDBC driver - geometry model
*
* (C) 2004 Paul Ramsey, [email protected]
*
* (C) 2005 Markus Schaber, [email protected]
*
* This library 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 2.1 of the License.
*
* This library 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 this library; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA or visit the web at
* http://www.gnu.org.
*
* $Id: LinearRing.java 1622 2005-04-15 14:04:34Z mschaber $
*/
package org.postgis;
import org.postgresql.util.PGtokenizer;
import java.sql.SQLException;
/**
* This represents the LinearRing GIS datatype. This type is used to construct
* the polygon types, but is not stored or retrieved directly from the database.
*/
public class LinearRing extends PointComposedGeom {
/* JDK 1.5 Serialization */
private static final long serialVersionUID = 0x100;
public LinearRing(Point[] points) {
super(LINEARRING, points);
}
/**
* This is called to construct a LinearRing from the PostGIS string
* representation of a ring.
*
* @param value Definition of this ring in the PostGIS string format.
*/
public LinearRing(String value) throws SQLException {
this(value, false);
}
/**
* @param value The text representation of this LinearRing
* @param haveM Hint whether we have a measure. This is given to us by other
* "parent" Polygon, and is passed further to our parent.
*/
protected LinearRing(String value, boolean haveM) throws SQLException {
super(LINEARRING);
PGtokenizer t = new PGtokenizer(PGtokenizer.removePara(value.trim()), ',');
int npoints = t.getSize();
Point[] points = new Point[npoints];
for (int p = 0; p < npoints; p++) {
points[p] = new Point(t.getToken(p), haveM);
}
this.dimension = points[0].dimension;
// fetch haveMeasure from subpoint because haveM does only work with
// 2d+M, not with 3d+M geometries
this.haveMeasure = points[0].haveMeasure;
this.subgeoms = points;
}
}