source: trunk/src/org/expeditee/agents/SearchGreenstoneByDate.java@ 1510

/**
 *    SearchGreenstoneByDate.java
 *    Copyright (C) 2010 New Zealand Digital Library, http://expeditee.org
 *
 *    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 3 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, see <http://www.gnu.org/licenses/>.
 */

package org.expeditee.agents;

import java.util.Collections;
import java.util.Map;
import java.util.Vector;

import org.expeditee.greenstone.Result;
import org.expeditee.greenstone.ResultDocument;
import org.expeditee.gui.FrameCreator;

public class SearchGreenstoneByDate extends SearchGreenstone {

        public SearchGreenstoneByDate(int resultsCount, String searchText) {
                super(resultsCount, searchText);
        }
        
        public SearchGreenstoneByDate(String searchText) {
                super(searchText);
        }
        
        public SearchGreenstoneByDate() {
                super();
        }

        protected void createResults() {
                if(_dateMap.isEmpty()){
                        initialiseDateMap(_currentResultSet);
                }
                viewByDate(_dateMap, _results);
        }

        public void initialiseDateMap(Vector<Result> results) {
                for (Result result : results) {
                        String docID = result.getDocID();

                        ResultDocument rd = _gsdl.getDocument(docID);

                        if (rd.metadataExists("Date")) {
                                addToDateMap(docID, rd);
                        }
                }
        }

        public void addToDateMap(String docID, ResultDocument rd) {
                if (_dateMap.containsKey(rd.getDate())) {
                        Vector<String> dateVector = _dateMap.get(rd.getDate());
                        if (!dateVector.contains(docID)) {
                                dateVector.addElement(docID);
                        }
                        _dateMap.put(rd.getDate(), dateVector);
                } else {
                        Vector<String> dateVector = new Vector<String>();
                        dateVector.addElement(docID);
                        _dateMap.put(rd.getDate(), dateVector);
                }
        }

        /**
         * This method provides an alternative view of the result set It uses the
         * dateMap which organises results according to the year in which they were
         * published
         * 
         * You will need to write a similar method for any additional view that you
         * implement
         * 
         * You may wish to modify this method to provide a better layout of the
         * output
         */
        private void viewByDate(Map<String, Vector<String>> dateMap,
                        FrameCreator results) {
                Vector<String> theDates = new Vector<String>(dateMap.keySet());
                Collections.sort(theDates);

                for (String date : theDates) {
                        Vector<String> ids = dateMap.get(date);

                        // Text dateText = results.addText(date, null, null, null, false);
                        // dateText.setFontStyle("bold");

                        for (String docID : ids) {
                                ResultDocument rd = _gsdl.getDocument(docID);
                                addText(rd, results, date + "- " + rd.getTitle());
                        }
                }
        }
}