Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/utils/DateAverager.java @ 4604:488db475613d

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Add methods to hide and show the manage projects button of the header It should be possible to show the manage projects button only if the ProjectList is hidden. Therefore add methods to allow to show and hide the button.
author Björn Ricks <bjoern.ricks@intevation.de>
date Fri, 30 Nov 2012 10:00:39 +0100
parents d520a0869972
children
rev   line source
3007
d520a0869972 Added class to average dates without overflows.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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1 package de.intevation.flys.utils;
d520a0869972 Added class to average dates without overflows.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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2
d520a0869972 Added class to average dates without overflows.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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3 import gnu.trove.TLongArrayList;
d520a0869972 Added class to average dates without overflows.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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4
d520a0869972 Added class to average dates without overflows.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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5 import java.util.Date;
d520a0869972 Added class to average dates without overflows.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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6
d520a0869972 Added class to average dates without overflows.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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7 public class DateAverager
d520a0869972 Added class to average dates without overflows.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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8 {
d520a0869972 Added class to average dates without overflows.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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9 protected TLongArrayList dates;
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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10
d520a0869972 Added class to average dates without overflows.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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11 public DateAverager() {
d520a0869972 Added class to average dates without overflows.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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12 dates = new TLongArrayList();
d520a0869972 Added class to average dates without overflows.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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13 }
d520a0869972 Added class to average dates without overflows.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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14
d520a0869972 Added class to average dates without overflows.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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15 public void add(Date date) {
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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16 dates.add(date.getTime());
d520a0869972 Added class to average dates without overflows.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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17 }
d520a0869972 Added class to average dates without overflows.
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18
d520a0869972 Added class to average dates without overflows.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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19 public Date getAverage() {
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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20 int N = dates.size();
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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21 if (N == 0) {
d520a0869972 Added class to average dates without overflows.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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22 return null;
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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23 }
d520a0869972 Added class to average dates without overflows.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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24 long min = dates.min();
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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25 long sum = 0L;
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26 for (int i = 0; i < N; ++i) {
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27 sum += dates.getQuick(i) - min;
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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28 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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29 return new Date(min + (long)Math.round(sum/(double)N));
d520a0869972 Added class to average dates without overflows.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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30 }
d520a0869972 Added class to average dates without overflows.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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31
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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32 public void clear() {
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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33 dates.resetQuick();
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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34 }
d520a0869972 Added class to average dates without overflows.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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35 }
d520a0869972 Added class to average dates without overflows.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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36 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org