Application: gvSIG desktop

import org.gvsig.fmap.dal.exception.ReadRuntimeException;

import org.gvsig.fmap.dal.store.shp.SHPStoreParameters;

    private final SHPStoreParameters params;

     * @param params

    public AbstractSHPReader(SHPStoreParameters params) {

        this.params = params;

    protected class InvalidNumberOfPointsInLinearRingException extends ReadRuntimeException {

        private final static String MESSAGE_FORMAT = "Invalid number of points in LinearRing (found %(NumPoints) - must be 0 or >= 4).\nCheck 'Fix LinearRings' in the shape's properties of the add layer dialog to try fix it.";

        private final static String MESSAGE_KEY = "_InvalidNumberOfPointsInLinearRingException";

        private static final long serialVersionUID = -8265770463632826027L;

        public InvalidNumberOfPointsInLinearRingException(int numPoints) {

            super(MESSAGE_FORMAT, null, MESSAGE_KEY, serialVersionUID);

            setValue("NumPoints", numPoints);

            this.getMessage();

        }

    }

    public void checkNumVerticesOfRing(Ring ring ) throws InvalidNumberOfPointsInLinearRingException {

            if( ring.getNumVertices()<4 ) {

                if( this.fixLinearRings() ) {

                    Point p = ring.getVertex(ring.getNumVertices()-1);

                    while( ring.getNumVertices()<4 ) {

                        p = (Point) p.cloneGeometry();

                        ring.addVertex(p);

                    }

                } else {

                    throw new InvalidNumberOfPointsInLinearRingException(ring.getNumVertices());

                }

            }        

    }

    public boolean fixLinearRings() {

        return params.getFixLinearRings();

    }