DateFormatter.java

/*
CloudTrail Viewer, is a Java desktop application for reading AWS CloudTrail logs
files.

Copyright (C) 2017  Mark P. Haskins

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 io.haskins.java.cloudtrailviewer.utils;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * Utility class for converting Date/Time String representations to other formats.
 *
 * Created by markhaskins on 05/01/2017.
 */
class DateFormatter {

    private final ThreadLocal<DateFormat> df_with_zone = new ThreadLocal<DateFormat>() {

        @Override
        protected DateFormat initialValue() {
            return new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
        }

        @Override
        public void set(DateFormat value) {
            super.set(value);
        }
    };

    long convertStringToLong(String dateString) throws ParseException {
        return df_with_zone.get().parse(dateString).getTime();
    }

    Date convertStringToDate(String dateString) throws ParseException {
        return df_with_zone.get().parse(dateString);
    }
}