LightPIT: src/main/java/de/uapcore/lightpit/viewmodel/util/IssueSorter.java@4a391ffa30d3

     1 package de.uapcore.lightpit.viewmodel.util;

     3 import de.uapcore.lightpit.entities.Issue;

     4 import de.uapcore.lightpit.entities.IssueStatus;

     6 import java.util.Arrays;

     7 import java.util.Comparator;

     9 public class IssueSorter implements Comparator<Issue> {

    11     public enum Field {

    12         DONE, ETA, UPDATED

    13     }

    15     public static class Criteria {

    16         private Field field;

    17         private boolean asc;

    19         public Criteria(Field field, boolean asc) {

    20             this.field = field;

    21             this.asc = asc;

    22         }

    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     }

    33     private final Criteria[] criteria;

    35     public IssueSorter(Criteria ... criteria) {

    36         this.criteria = criteria;

    37     }

    39     private int compare(Issue left, Issue right, Criteria criteria) {

    40         int result;

    41         switch (criteria.field) {

    42             case DONE:

    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.getEta() != 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     }

    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     }

    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 }

Mercurial > hg > LightPIT / file revision