Application: gvSIG desktop

package com.iver.cit.gvsig.fmap.drivers.featureiterators;

import java.awt.geom.Rectangle2D;

import com.hardcode.gdbms.driver.exceptions.ReadDriverException;

import com.hardcode.gdbms.engine.values.Value;

import com.iver.cit.gvsig.fmap.core.DefaultFeature;

import com.iver.cit.gvsig.fmap.core.IFeature;

import com.iver.cit.gvsig.fmap.core.IGeometry;

import com.iver.cit.gvsig.fmap.drivers.IFeatureIterator;

import com.iver.cit.gvsig.fmap.drivers.VectorialDriver;

import com.iver.cit.gvsig.fmap.layers.SelectableDataSource;

public class RandomAccessFeatureIterator implements IFeatureIterator {

        VectorialDriver drv;

        SelectableDataSource ds;

        Rectangle2D r = null;

        String epsg;

        int numRec = 0;

        public RandomAccessFeatureIterator(VectorialDriver driver, SelectableDataSource sds, Rectangle2D r, String strEPSG) {

                this.drv = driver;

                this.ds = sds;

                this.r = r;

                this.epsg = strEPSG;

        }

        public RandomAccessFeatureIterator(VectorialDriver driver, SelectableDataSource sds, String strEPSG) {

                this.drv = driver;

                this.ds = sds;

                this.epsg = strEPSG;

        }

        public boolean hasNext() throws ReadDriverException {

                boolean bMore = (numRec < drv.getShapeCount());

                return bMore;

        }

        public IFeature next() throws ReadDriverException {

                IGeometry geom;

                IFeature feat = null;

                geom = drv.getShape(numRec);

                // Si pedimos solo las que entran en un rect?ngulo....

                // ?QUE PASA SI TENEMOS UN ?NDICE ESPACIAL?

                if (r != null){

                        while (!(geom.fastIntersects(r.getMinX(), r.getMinY(),

                                        r.getWidth(), r.getHeight()))){

                                numRec++;

                                if (numRec < drv.getShapeCount())

                                        geom = drv.getShape(numRec);

                                else

                                        return null;

                                }

                }

                Value[] regAtt = new Value[ds.getFieldCount()];

                for (int fieldId = 0; fieldId < ds.getFieldCount(); fieldId++) {

                        regAtt[fieldId] = ds.getFieldValue(numRec, fieldId);

                }

                feat = new DefaultFeature(geom, regAtt, numRec + "");

                numRec++;

                return feat;

        }

        public void closeIterator() throws ReadDriverException {

        }

}