AIR.Common.Utilities.Dates.java Source code

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Here is the source code for AIR.Common.Utilities.Dates.java

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/*******************************************************************************
 * Educational Online Test Delivery System 
 * Copyright (c) 2014 American Institutes for Research
 *   
 * Distributed under the AIR Open Source License, Version 1.0 
 * See accompanying file AIR-License-1_0.txt or at
 * http://www.smarterapp.org/documents/American_Institutes_for_Research_Open_Source_Software_License.pdf
 ******************************************************************************/
package AIR.Common.Utilities;

import java.sql.Timestamp;
import java.util.Calendar;
import java.util.Date;

import org.apache.commons.lang3.time.DateUtils;

public class Dates {

    public static Date convertXST_EST(Date sourceDateTime, int offset) {
        // int offset = AppConfigSingleton.Instance.TimeZoneOffset;
        // NOTE: Larry wants to ignore the daylight saving
        // if (DateTime.Today.IsDaylightSavingTime())
        // offset += 1;

        return DateUtils.addHours(sourceDateTime, offset);
    }

    public static Date convertEST_XST(Date sourceDateTime, int offset) {
        // int offset = AppConfigSingleton.Instance.TimeZoneOffset;
        // NOTE: Larry wants to ignore the daylight saving
        // if (DateTime.Today.IsDaylightSavingTime())
        // offset += 1;

        return DateUtils.addHours(sourceDateTime, offset * -1);
    }

    /**
     * @param date
     * @return returns the midnight time for this date e.g. if date is
     *         "10/11/2012 12:10 pm" then this will return "10/11/2012 00:00 am"
     */
    public static Date getStartOfDayDate(Date date) {
        Calendar calendarInstance = Calendar.getInstance();
        calendarInstance.setTime(date);
        calendarInstance.set(Calendar.HOUR_OF_DAY, 0);
        calendarInstance.set(Calendar.MINUTE, 0);
        calendarInstance.set(Calendar.SECOND, 0);
        return calendarInstance.getTime();
    }

    /**
     * @param date
     * @return returns the midnight time for before date ends e.g. if date is
     *         "10/11/2012 12:10 pm" then this will return "10/11/2012 11:59 pm"
     */
    public static Date getEndOfDayDate(Date date) {
        Calendar calendarInstance = Calendar.getInstance();
        calendarInstance.setTime(date);
        calendarInstance.set(Calendar.HOUR_OF_DAY, 23);
        calendarInstance.set(Calendar.MINUTE, 59);
        calendarInstance.set(Calendar.SECOND, 0);
        return calendarInstance.getTime();
    }

    public static Timestamp getTimestamp(Date date) {
        if (date == null)
            return null;
        // TODO Shiva what about timezone?
        Timestamp ts = new Timestamp(date.getTime());
        return ts;
    }
}