Application: gvSIG desktop

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 * 

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 * 

 * This program 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 General Public License for more details.

 * 

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 

 * MA  02110-1301, USA.

 * 

 */

/*

 * AUTHORS (In addition to CIT):

 * 2008 PRODEVELOP                Main development

 */

package org.gvsig.geocoding;

import java.util.ArrayList;

import java.util.Iterator;

import java.util.List;

import java.util.Map;

import java.util.Set;

import org.gvsig.fmap.dal.DALLocator;

import org.gvsig.fmap.dal.DataManager;

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

import org.gvsig.fmap.dal.feature.Feature;

import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor;

import org.gvsig.fmap.dal.feature.FeatureQuery;

import org.gvsig.fmap.dal.feature.FeatureSelection;

import org.gvsig.fmap.dal.feature.FeatureSet;

import org.gvsig.fmap.dal.feature.FeatureStore;

import org.gvsig.geocoding.pattern.Patterngeocoding;

import org.gvsig.geocoding.result.GeocodingResult;

import org.gvsig.geocoding.result.ScoredFeature;

import org.gvsig.geocoding.styles.AbstractGeocodingStyle;

import org.gvsig.geocoding.styles.Composed;

import org.gvsig.geocoding.styles.DoubleRange;

import org.gvsig.geocoding.styles.SimpleCentroid;

import org.gvsig.geocoding.styles.SimpleRange;

import org.gvsig.tools.evaluator.Evaluator;

import org.gvsig.tools.locator.LocatorException;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 * Data geocoder implemetacion

 * 

 * @author <a href="mailto:jsanz@prodevelop.es"> Jorge Gaspar Sanz Salinas</a>

 * @author <a href="mailto:vsanjaime@prodevelop.es"> Vicente Sanjaime Calvet</a>

 */

public class DataGeocoderImpl implements DataGeocoder {

        private Logger log = LoggerFactory.getLogger(DataGeocoderImpl.class);

        private Patterngeocoding pattern;

        private DataManager manager;

        /**

         * Constructor

         * 

         * @param pat

         */

        public DataGeocoderImpl(Patterngeocoding pat) {

                this.pattern = pat;

                manager = DALLocator.getDataManager();

        }

        /**

         * set the pattern

         * 

         * @param pat

         */

        public void setPattern(Patterngeocoding pat) {

                this.pattern = pat;

        }

        /**

         * get the pattern

         * 

         * @param pat

         */

        public Patterngeocoding getPattern() {

                return this.pattern;

        }

        /**

         * Geocoding process

         */

        public Set<GeocodingResult> geocode(Address address)

                        throws LocatorException, DataException {

                FeatureStore store = getPattern().getSource().getLayerSource();

                AbstractGeocodingStyle astyle = getPattern().getSource().getStyle();

                Set<GeocodingResult> geomResults = null;

                Literal literalRelations = astyle.getMainLiteral();

                // SIMPLE RANGE

                if (astyle instanceof SimpleRange) {

                        SimpleRange style = (SimpleRange) astyle;

                        Literal literalAddress = ((NumberAddress) address).getMainLiteral();

                        // literal search

                        List<ScoredFeature> litResults = literalSearch(literalRelations,

                                        literalAddress, store);

                        // geom search

                        List<List<ScoredFeature>> lists = new ArrayList<List<ScoredFeature>>();

                        lists.add(litResults);

                        geomResults = style.match(lists, address);

                }

                // DOUBLE RANGE

                else if (astyle instanceof DoubleRange) {

                        DoubleRange style = (DoubleRange) astyle;

                        Literal literalAddress = ((NumberAddress) address).getMainLiteral();

                        // literal search

                        List<ScoredFeature> litResults = literalSearch(literalRelations,

                                        literalAddress, store);

                        // number search

                        List<List<ScoredFeature>> lists = new ArrayList<List<ScoredFeature>>();

                        lists.add(litResults);

                        geomResults = style.match(lists, address);

                }

                // SIMPLE CENTROID

                else if (astyle instanceof SimpleCentroid) {

                        SimpleCentroid style = (SimpleCentroid) astyle;

                        Literal mainLiteral = address.getMainLiteral();

                        // literal search

                        List<ScoredFeature> litResults = literalSearch(literalRelations,

                                        mainLiteral, store);

                        // Geom search

                        List<List<ScoredFeature>> lists = new ArrayList<List<ScoredFeature>>();

                        lists.add(litResults);

                        geomResults = style.match(lists, address);

                }

                // STYLE COMPOSED

                else if (astyle instanceof Composed) {

                        List<List<ScoredFeature>> lists = new ArrayList<List<ScoredFeature>>();

                        Composed style = (Composed) astyle;

                        ComposeAddress cAddress = (ComposeAddress) address;

                        // main literal search

                        Literal mainLiteralAddress = cAddress.getMainLiteral();

                        List<ScoredFeature> litResults = literalSearch(literalRelations,

                                        mainLiteralAddress, store);

                        lists.add(litResults);

                        // search in others literals

                        List<Literal> intersectslist = cAddress.getIntersectionLiteral();

                        for (Literal addrLiteral : intersectslist) {

                                // literal search

                                List<ScoredFeature> secList = literalSearch(literalRelations,

                                                addrLiteral, store);

                                lists.add(secList);

                        }

                        // Match                        

                        geomResults = style.match(lists, address);

                }

                return geomResults;

        }

        /**

         * first scouting process, search literal elements in store

         * @param literalRelations

         * @param literalAddress

         * @param store

         * @return

         * @throws DataException

         */

        private List<ScoredFeature> literalSearch(Literal literalRelations,

                        Literal literalAddress, FeatureStore store) throws DataException {

                List<FeatureSelection> sels = new ArrayList<FeatureSelection>();

                FeatureSet features = null;

                String exp = "";

                int i = 0;

                // search features related with the parameters

                for (Map.Entry<String, Object> lit : literalAddress) {

                        FeatureSelection selection = store.createFeatureSelection();

                        FeatureQuery query = store.createFeatureQuery();

                        String chain = ((String) lit.getValue()).trim();

                        FeatureAttributeDescriptor field = (FeatureAttributeDescriptor) literalRelations

                                        .get(i).getValue();

                        if (i == 0) {

                                exp = field.getName() + " like '" + chain + "'";

                        } else {

                                exp = exp + " AND " + field.getName() + " like '" + chain + "'";

                        }

                        Evaluator eval = manager.createExpresion(exp);

                        query.setFilter(eval);

                        features = store.getFeatureSet(query);

                        selection.select(features);

                        sels.add(selection);

                        log.debug("Selection " + i + " : " + selection.getSelectedCount());

                        i++;

                }

                // Put scores

                List<ScoredFeature> scores = createLiteralScores(store, sels);

                log.debug("Results: " + scores.size());

                return scores;

        }

        /**

         * Create score of the feature to first search

         * @param store

         * @param sels

         * @return

         * @throws DataException

         */

        private List<ScoredFeature> createLiteralScores(FeatureStore store,

                        List<FeatureSelection> sels) throws DataException {

                List<ScoredFeature> scores = new ArrayList<ScoredFeature>();

                FeatureSet features = store.getFeatureSet();

                for (Iterator<Feature> it = features.iterator(); it.hasNext();) {

                        Feature feature = it.next();

                        double num = 0;

                        for (int i = 0; i < sels.size(); i++) {

                                FeatureSelection sel = sels.get(i);

                                if (sel.isSelected(feature)) {

                                        num = num + scorePonderated(i, sels.size());

                                }

                        }

                        if (num > 0.0) {

                                ScoredFeature scoFeat = new ScoredFeature();

                                scoFeat.setReference(feature.getReference());

                                scoFeat.setScore(num);

                                scores.add(scoFeat);

                        }

                }

                return scores;

        }

        /**

         * Get the score value ponderated

         * @param i position

         * @param total

         * @return score

         */

        private double scorePonderated(int i, int total) {

                return total - i;

        }

}