com.fanniemae.ezpie.common.DateUtilities.java Source code

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Here is the source code for com.fanniemae.ezpie.common.DateUtilities.java

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/**
 *  
 * Copyright (c) 2016 Fannie Mae, All rights reserved.
 * This program and the accompany materials are made available under
 * the terms of the Fannie Mae Open Source Licensing Project available 
 * at https://github.com/FannieMaeOpenSource/ezPie/wiki/License
 * 
 * ezPIE is a registered trademark of Fannie Mae
 * 
 */

package com.fanniemae.ezpie.common;

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

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

/**
 * 
 * @author Rick Monson (richard_monson@fanniemae.com, https://www.linkedin.com/in/rick-monson/)
 * @since 2016-01-05
 * 
 */

public final class DateUtilities {

    protected static SimpleDateFormat _sdfISO = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
    protected static SimpleDateFormat _sdfPretty = new SimpleDateFormat("MMMM d, yyyy HH:mm:ss");

    private DateUtilities() {
    }

    public static String getCurrentDateTime() {
        return _sdfISO.format(Calendar.getInstance().getTime());
    }

    public static String getCurrentDateTimePretty() {
        return _sdfPretty.format(Calendar.getInstance().getTime());
    }

    public static String toPrettyString(Calendar value) {
        return (value == null) ? "" : toPrettyString(value.getTime());
    }

    public static String toPrettyString(Date value) {
        return (value == null) ? "" : _sdfPretty.format(value);
    }

    public static String toIsoString(Date value) {
        return (value == null) ? "" : _sdfISO.format(value);
    }

    public static String toIsoString(Calendar value) {
        return (value == null) ? "" : toIsoString(value.getTime());
    }

    public static String elapsedTime(long start) {
        long end = System.currentTimeMillis();
        return elapsedTime(start, end);
    }

    public static String elapsedTime(long start, long end) {
        long elapsed = Math.abs(end - start);
        String elapsedPretty;
        if (elapsed < 60000L) {
            elapsedPretty = DurationFormatUtils.formatDuration(elapsed, "s.S' seconds'");
        } else if (elapsed < 3600000L) {
            elapsedPretty = DurationFormatUtils.formatDuration(elapsed, "m' minutes' s.S' seconds'");
        } else if (elapsed < 86400000L) {
            elapsedPretty = DurationFormatUtils.formatDuration(elapsed, "H' hours' m' minutes' s.S' seconds'");
        } else {
            elapsedPretty = DurationFormatUtils.formatDuration(elapsed,
                    "d' days' H' hours' m' minutes' s.S' seconds'");
        }

        // Make days/hours/minutes singular if just one unit.
        if (elapsedPretty.startsWith("1 days "))
            elapsedPretty = elapsedPretty.replace("1 days ", "1 day ");
        if (elapsedPretty.contains(" 1 hours "))
            elapsedPretty = elapsedPretty.replace(" 1 hours ", " 1 hour ");
        if (elapsedPretty.contains(" 1 minutes "))
            elapsedPretty = elapsedPretty.replace(" 1 minutes ", " 1 minute ");
        if (end - start < 0) {
            return "Negative " + elapsedPretty;
        }
        return elapsedPretty;
    }

    public static String elapsedTimeShort(long start) {
        long end = System.currentTimeMillis();
        return elapsedTimeShort(start, end);
    }

    public static String elapsedTimeShort(long start, long end) {
        long elapsed = Math.abs(end - start);
        String elapsedPretty;
        if (elapsed < 60000L) {
            elapsedPretty = DurationFormatUtils.formatDuration(elapsed, "s.S's'");
        } else if (elapsed < 3600000L) {
            elapsedPretty = DurationFormatUtils.formatDuration(elapsed, "m'm' s.S's'");
        } else if (elapsed < 86400000L) {
            elapsedPretty = DurationFormatUtils.formatDuration(elapsed, "H'h' m'm' s.S's'");
        } else {
            elapsedPretty = DurationFormatUtils.formatDuration(elapsed, "d'd' H'h' m'm' s.S's'");
        }
        if (end - start < 0) {
            return "Negative " + elapsedPretty;
        }
        return elapsedPretty;
    }

}