Java Month of Year createKey(int instance, int year, int month, int day, int hour, int min, int sec, int milli, String uuid, boolean rolling)

Description

Create a key from all of the parts.

License

Open Source License

Parameter

Parameter	Description
instance	The stack instance number must be padded with
year	a parameter
month	a parameter
day	a parameter
hour	a parameter
uuid	a parameter

Declaration

static String createKey(int instance, int year, int month, int day, int hour, int min, int sec, int milli,
        String uuid, boolean rolling) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.util.Calendar;

import java.util.Date;
import java.util.TimeZone;

public class Main {
    /**//ww  w  .  j  av  a 2 s.co m
     * This template is used to generated a key for a batch of AccessRecords:
     * <stack_instance>/<year><month><day>/<hour>/<uuid>.csv.gz
     */
    private static final String INSTANCE_PREFIX_TEMPLATE = "%1$09d";
    private static final String DATE_TEMPLATE = "%1$04d-%2$02d-%3$02d";
    private static final String KEY_TEMPLATE = "%1$S/%2$S/%3$02d-%4$02d-%5$02d-%6$03d-%7$s%8$s.csv.gz";
    public static final String ROLLING = "-rolling";

    /**
     * Create a key from all of the parts.
     * @param instance The stack instance number must be padded with 
     * @param year
     * @param month
     * @param day
     * @param hour
     * @param uuid
     * @return
     */
    static String createKey(int instance, int year, int month, int day, int hour, int min, int sec, int milli,
            String uuid, boolean rolling) {
        String roll = rolling ? ROLLING : "";
        return String.format(KEY_TEMPLATE, getInstancePrefix(instance), getDateString(year, month, day), hour, min,
                sec, milli, uuid, roll);
    }

    /**
     * Get the prefix used for this instance.
     * @param instance
     * @return
     */
    public static String getInstancePrefix(int instance) {
        return String.format(INSTANCE_PREFIX_TEMPLATE, instance);
    }

    /**
     * Get the date string
     * @param timeMS
     * @return
     */
    public static String getDateString(long timeMS) {
        Calendar cal = getCalendarUTC(timeMS);
        int year = cal.get(Calendar.YEAR);
        // We do a +1 because JANUARY=0 
        int month = cal.get(Calendar.MONTH) + 1;
        int day = cal.get(Calendar.DAY_OF_MONTH);
        return getDateString(year, month, day);
    }

    /**
     * Get the date String
     * @param year
     * @param month
     * @param day
     * @return
     */
    public static String getDateString(int year, int month, int day) {
        return String.format(DATE_TEMPLATE, year, month, day);
    }

    /**
     * Get a new UTC calendar set to the given time.
     * @param timeMS
     * @return
     */
    public static Calendar getCalendarUTC(long timeMS) {
        Calendar cal = getClaendarUTC();
        cal.setTime(new Date(timeMS));
        return cal;
    }

    /**
     * Get a new Calendar Set to UTC time zone.
     * @return
     */
    public static Calendar getClaendarUTC() {
        return Calendar.getInstance(TimeZone.getTimeZone("GMT+0:00"));
    }
}

Related

1. create(final int year, final int month, final int day)
2. create(int year, int month, int day)
3. create(int year, int month, int day, int hour, int minute, int second)
4. createTimestamp(int year, int month, int day, int hour, int minutes, int seconds)
5. currentYearMonth()
6. dayOfYear(int year, int month, int day)
7. dayOfYear(int year, int month, int day)