de.peterspan.csv2db.util.DateTimeParserHelper.java Source code

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Here is the source code for de.peterspan.csv2db.util.DateTimeParserHelper.java

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/**
 *  Copyright 2012-2013 Frederik Hahne, Christoph Stiehm
 *
 *    This file is part of csv2db.
 *
 *  csv2db 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.
 *
 *  csv2db 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 csv2db.  If not, see <http://www.gnu.org/licenses/>.
 */
package de.peterspan.csv2db.util;

import java.util.Date;

import org.joda.time.DateTime;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;
import org.joda.time.format.DateTimeFormatterBuilder;
import org.joda.time.format.DateTimeParser;

public class DateTimeParserHelper {

    private static DateTimeParserHelper instance;

    DateTimeFormatter formatter;

    private DateTimeParserHelper() {
        DateTimeParser[] parsers = { DateTimeFormat.forPattern("yyyy-MM-dd").getParser(),
                DateTimeFormat.forPattern("yyyyMMdd").getParser(),
                DateTimeFormat.forPattern("yyyy.MM.dd").getParser(),
                DateTimeFormat.forPattern("dd.MM.yyyy").getParser(),
                DateTimeFormat.forPattern("dd-MM-yyyy").getParser(),
                DateTimeFormat.forPattern("ddMMyyyy").getParser() };
        formatter = new DateTimeFormatterBuilder().append(null, parsers).toFormatter();
    };

    public static synchronized DateTimeParserHelper getInstance() {
        if (instance == null)
            instance = new DateTimeParserHelper();
        return instance;
    }

    public Date tryParseDate(String dateString) throws IllegalArgumentException {
        DateTime date = formatter.parseDateTime(dateString);
        return date.toDate();
    }
}