br.bireme.scl.ResetExportFlag.java Source code

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Here is the source code for br.bireme.scl.ResetExportFlag.java

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/*=========================================================================
    
Copyright  2013 BIREME/PAHO/WHO
    
This file is part of Social Check Links.
    
Social Check Links 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, either version 2.1 of
the License, or (at your option) any later version.
    
Social Check Links 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.
    
You should have received a copy of the GNU Lesser General Public
License along with Social Check Links. If not, see
<http://www.gnu.org/licenses/>.
    
=========================================================================*/

package br.bireme.scl;

import static br.bireme.scl.BrokenLinks.ELEM_LST_FIELD;
import static br.bireme.scl.BrokenLinks.LAST_UPDATE_FIELD;
import static br.bireme.scl.MongoOperations.EXPORTED_FIELD;
import com.mongodb.BasicDBList;
import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;
import com.mongodb.MongoClient;
import java.net.UnknownHostException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

/**
 *
 * @author Heitor Barbieri
 * date 20140117
 */
public class ResetExportFlag {
    private static void reset(final String host, final int port, final String database, final String collection,
            final String sdate) throws UnknownHostException, ParseException {
        assert host != null;
        assert port > 0;
        assert database != null;
        assert collection != null;

        final MongoClient client = new MongoClient(host, port);
        final DB db = client.getDB(database);
        final DBCollection coll = db.getCollection(collection);
        final String prefix = ELEM_LST_FIELD + ".0.";
        final BasicDBObject query;
        final DBCursor cursor;

        if (sdate == null) {
            query = new BasicDBObject(prefix + EXPORTED_FIELD, true);
        } else {
            final SimpleDateFormat simple = new SimpleDateFormat("yyyyMMdd");
            final Date date = simple.parse(sdate);

            final BasicDBList list = new BasicDBList();
            list.add(new BasicDBObject(prefix + EXPORTED_FIELD, true));
            list.add(new BasicDBObject(prefix + LAST_UPDATE_FIELD, new BasicDBObject("$gte", date)));
            query = new BasicDBObject("$and", list);
        }
        cursor = coll.find(query);

        while (cursor.hasNext()) {
            final BasicDBObject doc = (BasicDBObject) cursor.next();
            final BasicDBList list = (BasicDBList) doc.get(ELEM_LST_FIELD);
            final BasicDBObject elem = (BasicDBObject) list.get(0);
            elem.put(EXPORTED_FIELD, false);
            coll.save(doc);
        }
        cursor.close();
    }

    private static void usage() {
        System.err.println("usage: ResetExportFlag <mongo_host> <database>"
                + " <collection> [-init_date=<yyyymmdd>] [-mongo_port=<port>]");
        System.exit(1);
    }

    public static void main(final String[] args) throws UnknownHostException, ParseException {
        if (args.length < 3) {
            usage();
        }
        String date = null;
        int port = BrokenLinks.DEFAULT_PORT;

        for (int idx = 3; idx < args.length; idx++) {
            if (args[idx].startsWith("-init_date=")) {
                date = args[idx].substring(11);
            } else if (args[idx].startsWith("-mongo_port=")) {
                port = Integer.parseInt(args[idx].substring(12));
            } else {
                usage();
            }
        }

        reset(args[0], port, args[1], args[2], date);
    }
}