diff -r 61669abf277f -r e8eecee6aadf src/main/java/de/uapcore/lightpit/viewmodel/util/IssueSorter.java
--- a/src/main/java/de/uapcore/lightpit/viewmodel/util/IssueSorter.java	Sat Jan 23 14:47:59 2021 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,83 +0,0 @@
-package de.uapcore.lightpit.viewmodel.util;
-
-import de.uapcore.lightpit.entities.Issue;
-import de.uapcore.lightpit.types.IssueStatusPhase;
-
-import java.util.Arrays;
-import java.util.Comparator;
-
-public class IssueSorter implements Comparator<Issue> {
-
-    public enum Field {
-        DONE, ETA, UPDATED
-    }
-
-    public static class Criteria {
-        private Field field;
-        private boolean asc;
-
-        public Criteria(Field field, boolean asc) {
-            this.field = field;
-            this.asc = asc;
-        }
-
-        @Override
-        public boolean equals(Object obj) {
-            if (obj == null || !obj.getClass().equals(Criteria.class))
-                return false;
-            final var other = (Criteria)obj;
-            return other.field.equals(field) && other.asc == asc;
-        }
-    }
-
-    private final Criteria[] criteria;
-
-    public IssueSorter(Criteria ... criteria) {
-        this.criteria = criteria;
-    }
-
-    private int compare(Issue left, Issue right, Criteria criteria) {
-        if (left.equals(right))
-            return 0;
-
-        int result;
-        switch (criteria.field) {
-            case DONE:
-                result = Boolean.compare(
-                        left.getStatus().getPhase().equals(IssueStatusPhase.Companion.getDone()),
-                        right.getStatus().getPhase().equals(IssueStatusPhase.Companion.getDone()));
-                break;
-            case ETA:
-                if (left.getEta() != null && right.getEta() != null)
-                    result = left.getEta().compareTo(right.getEta());
-                else if (left.getEta() == null && right.getEta() == null)
-                    result = 0;
-                else
-                    result = left.getEta() != null ? -1 : 1;
-                break;
-            case UPDATED:
-                result = left.getUpdated().compareTo(right.getUpdated());
-                break;
-            default:
-                throw new UnsupportedOperationException();
-        }
-        return criteria.asc ? result : -result;
-    }
-
-    @Override
-    public int compare(Issue left, Issue right) {
-        for (var c : criteria) {
-            int r = compare(left, right, c);
-            if (r != 0) return r;
-        }
-        return 0;
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (o == null || !o.getClass().equals(IssueSorter.class))
-            return false;
-        final var other = (IssueSorter) o;
-        return Arrays.equals(criteria, other.criteria);
-    }
-}