/*
 *    GeoTools - OpenSource mapping toolkit
 *    http://geotools.org
 *    (C) 2005-2006, GeoTools Project Managment Committee (PMC)
 * 
 *    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;
 *    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.
 */
package org.geotools.data.edigeo;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.NoSuchElementException;
import org.geotools.data.FeatureReader;
import org.geotools.feature.simple.SimpleFeatureBuilder;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.simple.SimpleFeatureType;
import org.opengis.feature.IllegalAttributeException;

/**
 * <p>
 * Private FeatureReader inner class for reading Features from the MIF file
 * </p>
 *
 * @source $URL$
 */
public class EdigeoFeatureReader implements FeatureReader<SimpleFeatureType, SimpleFeature> {

    EdigeoVEC vecParser = null;
    private SimpleFeatureType ft;
    private ArrayList<SimpleFeature> featureList;
    private Iterator<SimpleFeature> featureListIterator = null;

    protected class Visitor {
        public void visit(Object[] values, String fid)
                throws IllegalAttributeException {
            // create feature and add it to list
            SimpleFeature f = SimpleFeatureBuilder.build(ft, values, fid);
            featureList.add(f);
        }
    }

    public EdigeoFeatureReader (File dir, String filename, String obj, SimpleFeatureType ft)
            throws IOException, IllegalAttributeException {
        this.ft = ft;
        featureList = new ArrayList<SimpleFeature>();
        vecParser = new EdigeoVEC(dir.getParentFile().getPath() + "/" + filename);
        vecParser.readVECFile(obj, new Visitor());
    }

    public SimpleFeatureType getFeatureType() {
        return ft;
    }

    public SimpleFeature next()
            throws IOException, IllegalAttributeException, NoSuchElementException {
        if (featureListIterator == null) {
            featureListIterator = featureList.iterator();
        }
        return featureListIterator.next();

    }

    public boolean hasNext() throws IOException {
        if (featureListIterator == null) {
            featureListIterator = featureList.iterator();
        }
        return featureListIterator.hasNext();
    }

    public void close() throws IOException {
    }
}