Mon, 21 Dec 2020 18:29:34 +0100
major refactoring of DAO architecture - also fixes #114
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1 | package de.uapcore.lightpit.viewmodel.util; |
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2 | |
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3 | import de.uapcore.lightpit.entities.Issue; |
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4 | import de.uapcore.lightpit.types.IssueStatusPhase; |
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5 | |
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6 | import java.util.Arrays; |
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7 | import java.util.Comparator; |
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8 | |
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9 | public class IssueSorter implements Comparator<Issue> { |
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10 | |
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11 | public enum Field { |
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12 | DONE, ETA, UPDATED |
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13 | } |
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14 | |
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15 | public static class Criteria { |
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16 | private Field field; |
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17 | private boolean asc; |
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18 | |
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19 | public Criteria(Field field, boolean asc) { |
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20 | this.field = field; |
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21 | this.asc = asc; |
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22 | } |
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23 | |
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24 | @Override |
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25 | public boolean equals(Object obj) { |
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26 | if (obj == null || !obj.getClass().equals(Criteria.class)) |
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27 | return false; |
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28 | final var other = (Criteria)obj; |
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29 | return other.field.equals(field) && other.asc == asc; |
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30 | } |
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31 | } |
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32 | |
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33 | private final Criteria[] criteria; |
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34 | |
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35 | public IssueSorter(Criteria ... criteria) { |
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36 | this.criteria = criteria; |
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37 | } |
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38 | |
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39 | private int compare(Issue left, Issue right, Criteria criteria) { |
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40 | if (left.equals(right)) |
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41 | return 0; |
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42 | |
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43 | int result; |
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44 | switch (criteria.field) { |
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45 | case DONE: |
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46 | result = Boolean.compare( |
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47 | left.getStatus().getPhase().equals(IssueStatusPhase.Companion.getDone()), |
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48 | right.getStatus().getPhase().equals(IssueStatusPhase.Companion.getDone())); |
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49 | break; |
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50 | case ETA: |
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51 | if (left.getEta() != null && right.getEta() != null) |
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52 | result = left.getEta().compareTo(right.getEta()); |
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53 | else if (left.getEta() == null && right.getEta() == null) |
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54 | result = 0; |
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55 | else |
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56 | result = left.getEta() != null ? -1 : 1; |
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57 | break; |
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58 | case UPDATED: |
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59 | result = left.getUpdated().compareTo(right.getUpdated()); |
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60 | break; |
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61 | default: |
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62 | throw new UnsupportedOperationException(); |
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63 | } |
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64 | return criteria.asc ? result : -result; |
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65 | } |
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66 | |
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67 | @Override |
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68 | public int compare(Issue left, Issue right) { |
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69 | for (var c : criteria) { |
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70 | int r = compare(left, right, c); |
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71 | if (r != 0) return r; |
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72 | } |
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73 | return 0; |
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74 | } |
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75 | |
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76 | @Override |
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77 | public boolean equals(Object o) { |
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78 | if (o == null || !o.getClass().equals(IssueSorter.class)) |
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79 | return false; |
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80 | final var other = (IssueSorter) o; |
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81 | return Arrays.equals(criteria, other.criteria); |
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82 | } |
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83 | } |