Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/DateRange.java @ 9214:091fd9676496

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Made DateRange class immutable
author gernotbelger
date Tue, 03 Jul 2018 14:26:56 +0200
parents 9b4f5e61c02e
children
rev   line source
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Sascha L. Teichmann <teichmann@intevation.de>
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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Sascha L. Teichmann <teichmann@intevation.de>
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.artifacts.model;
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11 import java.io.Serializable;
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12 import java.util.Date;
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13
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14 import org.dive4elements.artifacts.common.utils.DateUtils;
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15
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16 public class DateRange implements Serializable {
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17 private static final long serialVersionUID = -2553914795388094818L;
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18
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19 private final Date from;
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20 private final Date to;
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21
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22 public DateRange(final Date from, final Date to) {
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23 this.from = from;
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24 this.to = to;
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25 }
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26
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27 public Date getFrom() {
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28 return this.from;
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29 }
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30
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31 public Date getTo() {
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32 return this.to;
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33 }
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34
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35 private static final boolean equalDates(final Date a, final Date b) {
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36 if (a == null && b != null)
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37 return false;
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38
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39 if (a != null && b == null)
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40 return false;
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41
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42 if (a == null)
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43 return true;
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44
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45 return a.equals(b);
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46 }
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47
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48 @Override
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49 public boolean equals(final Object other) {
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50 if (!(other instanceof DateRange))
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51 return false;
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52
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53 final DateRange o = (DateRange) other;
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54 return equalDates(this.from, o.from) && equalDates(this.to, o.to);
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55 }
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56
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57 public int getFromYear() {
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58 return DateUtils.getYearFromDate(this.from);
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59 }
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60
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61 public int getToYear() {
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62 return DateUtils.getYearFromDate(this.to);
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63 }
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64 }
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