comparison: src/main/java/de/uapcore/lightpit/viewmodel/util/IssueSorter.java
src/main/java/de/uapcore/lightpit/viewmodel/util/IssueSorter.java
- changeset 121
- 428dca747d6b
- child 141
- 8160dfc4dbc3
equal
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| 120:5d4c12338fe0 | 121:428dca747d6b |
|---|---|
| 1 package de.uapcore.lightpit.viewmodel.util; | |
| 2 | |
| 3 import de.uapcore.lightpit.entities.Issue; | |
| 4 import de.uapcore.lightpit.entities.IssueStatus; | |
| 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 PHASE, 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 int result; | |
| 41 switch (criteria.field) { | |
| 42 case PHASE: | |
| 43 result = Boolean.compare( | |
| 44 left.getPhase() == IssueStatus.PHASE_DONE, | |
| 45 right.getPhase() == IssueStatus.PHASE_DONE); | |
| 46 break; | |
| 47 case ETA: | |
| 48 if (left.getEta() != null && right.getEta() != null) | |
| 49 result = left.getEta().compareTo(right.getEta()); | |
| 50 else | |
| 51 result = left != null ? -1 : 1; | |
| 52 break; | |
| 53 case UPDATED: | |
| 54 result = left.getUpdated().compareTo(right.getUpdated()); | |
| 55 break; | |
| 56 default: | |
| 57 throw new UnsupportedOperationException(); | |
| 58 } | |
| 59 return criteria.asc ? result : -result; | |
| 60 } | |
| 61 | |
| 62 @Override | |
| 63 public int compare(Issue left, Issue right) { | |
| 64 for (var c : criteria) { | |
| 65 int r = compare(left, right, c); | |
| 66 if (r != 0) return r; | |
| 67 } | |
| 68 return 0; | |
| 69 } | |
| 70 | |
| 71 @Override | |
| 72 public boolean equals(Object o) { | |
| 73 if (o == null || !o.getClass().equals(IssueSorter.class)) | |
| 74 return false; | |
| 75 final var other = (IssueSorter) o; | |
| 76 return Arrays.equals(criteria, other.criteria); | |
| 77 } | |
| 78 } |
