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Merge pull request #3 from agilitytestbed/features/balancehistory
Features/balancehistory
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82 changes: 82 additions & 0 deletions
82
src/main/java/nl/utwente/ing/misc/date/IntervalHelper.java
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| package nl.utwente.ing.misc.date; | ||
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| import java.time.LocalDateTime; | ||
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| /** | ||
| * The IntervalHelper class. | ||
| * Used to generate intervals and compare dates. | ||
| * | ||
| * @author Daan Kooij | ||
| */ | ||
| public class IntervalHelper { | ||
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| /** | ||
| * Method used to generate a certain number of intervals with certain size. | ||
| * The generation of intervals is done by taking the current datetime and and putting the resulting edges of the | ||
| * intervals in an array in the form of LocalDateTime objects. | ||
| * <p> | ||
| * Example: suppose the current date is 13 May 2018 and you want to generate five intervals with sizes of one day | ||
| * each. Then you specify intervalPeriod to be IntervalPeriod.DAY and amount to be 5. The returned array will then | ||
| * be: [8 May 2018, 9 May 2018, 10 May 2018, 11 May 2018, 12 May 2018, 13 May 2018]. | ||
| * <p> | ||
| * Note that the size of the array is equal to the amount of intervals plus one. | ||
| * | ||
| * @param intervalPeriod The size of the intervals to be generated. | ||
| * @param amount The amount of intervals to be generated. | ||
| * @return An array containing (amount | ||
| */ | ||
| public static LocalDateTime[] getIntervals(IntervalPeriod intervalPeriod, int amount) { | ||
| LocalDateTime[] intervals = new LocalDateTime[amount + 1]; | ||
| intervals[amount] = LocalDateTime.now(); | ||
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| if (intervalPeriod == IntervalPeriod.YEAR) { | ||
| for (int i = amount - 1; i >= 0; i--) { | ||
| intervals[i] = intervals[i + 1].minusYears(1); | ||
| } | ||
| } else if (intervalPeriod == IntervalPeriod.MONTH) { | ||
| for (int i = amount - 1; i >= 0; i--) { | ||
| intervals[i] = intervals[i + 1].minusMonths(1); | ||
| } | ||
| } else if (intervalPeriod == IntervalPeriod.WEEK) { | ||
| for (int i = amount - 1; i >= 0; i--) { | ||
| intervals[i] = intervals[i + 1].minusWeeks(1); | ||
| } | ||
| } else if (intervalPeriod == IntervalPeriod.DAY) { | ||
| for (int i = amount - 1; i >= 0; i--) { | ||
| intervals[i] = intervals[i + 1].minusDays(1); | ||
| } | ||
| } else { | ||
| for (int i = amount - 1; i >= 0; i--) { | ||
| intervals[i] = intervals[i + 1].minusHours(1); | ||
| } | ||
| } | ||
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| return intervals; | ||
| } | ||
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| /** | ||
| * Method used to convert a LocalDateTime object to a String, in the format that the DPA uses. | ||
| * | ||
| * @param localDateTime The LocalDateTime object that should be converted to a String. | ||
| * @return A String object in the format that the DPA uses that reflects the converted LocalDateTime object. | ||
| */ | ||
| public static String dateToString(LocalDateTime localDateTime) { | ||
| return localDateTime.toString() + "Z"; | ||
| } | ||
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| /** | ||
| * Method used to check whether the date contained in a certain LocalDateTime object is smaller than the date | ||
| * contained in a certain String object. | ||
| * | ||
| * @param date1 The LocalDateTime object for which it will be checked if the contained date is smaller than the | ||
| * contained date in s. | ||
| * @param s The String object for which it will be checked whether the contained date is bigger than or equal | ||
| * to the contained date in date1. | ||
| * @return A boolean indicating whether the date contained in date1 is smaller than the date contained in s. | ||
| */ | ||
| public static boolean isSmallerThan(LocalDateTime date1, String s) { | ||
| LocalDateTime date2 = LocalDateTime.parse(s.split("Z")[0]); | ||
| return date1.compareTo(date2) < 0; | ||
| } | ||
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| } |
13 changes: 13 additions & 0 deletions
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src/main/java/nl/utwente/ing/misc/date/IntervalPeriod.java
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| package nl.utwente.ing.misc.date; | ||
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| /** | ||
| * The IntervalPeriod enum. | ||
| * Used to enumerate the possible interval sizes. | ||
| * | ||
| * @author Daan Kooij | ||
| */ | ||
| public enum IntervalPeriod { | ||
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| HOUR, DAY, WEEK, MONTH, YEAR; | ||
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| } |
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91 changes: 91 additions & 0 deletions
91
src/main/java/nl/utwente/ing/model/bean/BalanceCandlestick.java
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| package nl.utwente.ing.model.bean; | ||
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| /** | ||
| * The Balance Candlestick class. | ||
| * Used to store balance information about the balance information of a certain interval. | ||
| * | ||
| * @author Daan Kooij | ||
| */ | ||
| public class BalanceCandlestick { | ||
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| private float open, close, high, low, volume; | ||
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| /** | ||
| * The constructor of BalanceCandlestick. | ||
| * Initially, only the opening balance is specified, after which this balance can be modified by using the mutate | ||
| * method. Along the way, this bean keeps track of the opening balance, the closing balance, the highest balance, | ||
| * the lowest balance and the volume of all the mutations combined. | ||
| * | ||
| * @param open The opening balance of this BalanceCandlestick. | ||
| */ | ||
| public BalanceCandlestick(float open) { | ||
| this.open = open; | ||
| this.close = open; | ||
| this.high = open; | ||
| this.low = open; | ||
| this.volume = 0; | ||
| } | ||
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| /** | ||
| * Method used to retrieve the opening balance of BalanceCandlestick. | ||
| * | ||
| * @return The opening balance of BalanceCandlestick. | ||
| */ | ||
| public float getOpen() { | ||
| return open; | ||
| } | ||
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| /** | ||
| * Method used to retrieve the closing balance of BalanceCandlestick. | ||
| * | ||
| * @return The closing balance of BalanceCandlestick. | ||
| */ | ||
| public float getClose() { | ||
| return close; | ||
| } | ||
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| /** | ||
| * Method used to retrieve the highest balance in the lifetime of BalanceCandlestick. | ||
| * | ||
| * @return The highest balance in the lifetime of BalanceCandlestick. | ||
| */ | ||
| public float getHigh() { | ||
| return high; | ||
| } | ||
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| /** | ||
| * Method used to retrieve the lowest balance in the lifetime of BalanceCandlestick. | ||
| * | ||
| * @return The lowest balance in the lifetime of BalanceCandlestick. | ||
| */ | ||
| public float getLow() { | ||
| return low; | ||
| } | ||
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| /** | ||
| * Method used to retrieve the volume of all the mutations done on BalanceCandlestick combined. | ||
| * | ||
| * @return The volume of all the mutations done on BalanceCandlestick combined. | ||
| */ | ||
| public float getVolume() { | ||
| return volume; | ||
| } | ||
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| /** | ||
| * Method used to indicate a mutation of the balance of BalanceCandlestick. | ||
| * Along the way, this method updates the closing balance, the highest balance, the lowest balance | ||
| * and the volume of all the mutations combined accordingly. | ||
| * | ||
| * @param amount The value with which the balance of BalanceCandlestick should be mutated. | ||
| */ | ||
| public void mutation(float amount) { | ||
| close += amount; | ||
| if (close > high) { | ||
| high = close; | ||
| } else if (close < low) { | ||
| low = close; | ||
| } | ||
| volume += Math.abs(amount); | ||
| } | ||
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| } |
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