Application: gvSIG desktop

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

import java.awt.geom.Rectangle2D;

import java.io.IOException;

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

import com.iver.cit.gvsig.fmap.DriverException;

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.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 DriverException {

                try {

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

                        return bMore; 

                } catch (IOException e) {

                        throw new DriverException(e);

                } 

        }

        public IFeature next() throws DriverException {

                IGeometry geom;

                IFeature feat = null;

                try {

                        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++;

                } catch (IOException e) {

                        throw new DriverException(e);

                } catch (com.hardcode.gdbms.engine.data.driver.DriverException e) {

                        throw new DriverException(e);

                }

                return feat;                

        }

        public void closeIterator() throws DriverException {

        }

}