comparison: src/main/java/de/uapcore/lightpit/viewmodel/util/IssueSorter.java
src/main/java/de/uapcore/lightpit/viewmodel/util/IssueSorter.java
- changeset 184
- e8eecee6aadf
- parent 167
- 3f30adba1c63
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| 183:61669abf277f | 184:e8eecee6aadf |
|---|---|
| 1 package de.uapcore.lightpit.viewmodel.util; | |
| 2 | |
| 3 import de.uapcore.lightpit.entities.Issue; | |
| 4 import de.uapcore.lightpit.types.IssueStatusPhase; | |
| 5 | |
| 6 import java.util.Arrays; | |
| 7 import java.util.Comparator; | |
| 8 | |
| 9 public class IssueSorter implements Comparator<Issue> { | |
| 10 | |
| 11 public enum Field { | |
| 12 DONE, ETA, UPDATED | |
| 13 } | |
| 14 | |
| 15 public static class Criteria { | |
| 16 private Field field; | |
| 17 private boolean asc; | |
| 18 | |
| 19 public Criteria(Field field, boolean asc) { | |
| 20 this.field = field; | |
| 21 this.asc = asc; | |
| 22 } | |
| 23 | |
| 24 @Override | |
| 25 public boolean equals(Object obj) { | |
| 26 if (obj == null || !obj.getClass().equals(Criteria.class)) | |
| 27 return false; | |
| 28 final var other = (Criteria)obj; | |
| 29 return other.field.equals(field) && other.asc == asc; | |
| 30 } | |
| 31 } | |
| 32 | |
| 33 private final Criteria[] criteria; | |
| 34 | |
| 35 public IssueSorter(Criteria ... criteria) { | |
| 36 this.criteria = criteria; | |
| 37 } | |
| 38 | |
| 39 private int compare(Issue left, Issue right, Criteria criteria) { | |
| 40 if (left.equals(right)) | |
| 41 return 0; | |
| 42 | |
| 43 int result; | |
| 44 switch (criteria.field) { | |
| 45 case DONE: | |
| 46 result = Boolean.compare( | |
| 47 left.getStatus().getPhase().equals(IssueStatusPhase.Companion.getDone()), | |
| 48 right.getStatus().getPhase().equals(IssueStatusPhase.Companion.getDone())); | |
| 49 break; | |
| 50 case ETA: | |
| 51 if (left.getEta() != null && right.getEta() != null) | |
| 52 result = left.getEta().compareTo(right.getEta()); | |
| 53 else if (left.getEta() == null && right.getEta() == null) | |
| 54 result = 0; | |
| 55 else | |
| 56 result = left.getEta() != null ? -1 : 1; | |
| 57 break; | |
| 58 case UPDATED: | |
| 59 result = left.getUpdated().compareTo(right.getUpdated()); | |
| 60 break; | |
| 61 default: | |
| 62 throw new UnsupportedOperationException(); | |
| 63 } | |
| 64 return criteria.asc ? result : -result; | |
| 65 } | |
| 66 | |
| 67 @Override | |
| 68 public int compare(Issue left, Issue right) { | |
| 69 for (var c : criteria) { | |
| 70 int r = compare(left, right, c); | |
| 71 if (r != 0) return r; | |
| 72 } | |
| 73 return 0; | |
| 74 } | |
| 75 | |
| 76 @Override | |
| 77 public boolean equals(Object o) { | |
| 78 if (o == null || !o.getClass().equals(IssueSorter.class)) | |
| 79 return false; | |
| 80 final var other = (IssueSorter) o; | |
| 81 return Arrays.equals(criteria, other.criteria); | |
| 82 } | |
| 83 } |
