Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (c) 2010-2012 Mark Allen.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

import java.util.Date;

import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

public class Main {
    private static final long SECONDS_IN_DAY = 60 * 60 * 24;

    static Map<String, String> buildQueries(String baseQuery, List<Date> datesByQueryIndex) {
        Map<String, String> fqlByQueryIndex = new LinkedHashMap<String, String>();
        for (int queryIndex = 0; queryIndex < datesByQueryIndex.size(); queryIndex++) {
            Date d = datesByQueryIndex.get(queryIndex);
            String query = baseQuery + convertToUnixTimeOneDayLater(d);
            fqlByQueryIndex.put(String.valueOf(queryIndex), query);
        }
        return fqlByQueryIndex;
    }

    /**
     * Converts into a "unix time", which means convert into the number of seconds
     * (NOT milliseconds) from the Epoch fit for the Facebook Query Language.
     * Notice that if you want data for September 15th then you need to present to
     * Facebook the NEXT DAY, ie. the upper exclusive limit of your date range. So
     * beyond all the sliding to midnight code you see in
     * {@link #convertToMidnightInPacificTimeZone(Date)}, we need to go further
     * and slide this input date forward one day.
     * 
     * In retrospect, this should have been implemented via the Facebook
     * end_time_date() function.
     * 
     * @param date
     *          The date to convert.
     * @return Unix time representation of the given {@code date}.
     */
    static long convertToUnixTimeOneDayLater(Date date) {
        long time = date.getTime() / 1000L;
        // note we cannot use a Daylight sensitive Calendar here since that would
        // adjust the time incorrectly over the DST junction
        time += SECONDS_IN_DAY;
        return time;
    }
}