--- /dev/null
+/*
+ * Copyright (c) 2017-2019. Developed by Hedgecode.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.hedgecode.snooker.compare;
+
+import java.io.Serializable;
+import java.util.Comparator;
+
+import org.hedgecode.snooker.api.Round;
+
+/**
+ * Set of Comparators for {@link Round}.
+ * 1. Sorting by Round Number {@link RoundComparator};
+ * 2. Sorting by Event {@link EventComparator};
+ *
+ * @author Dmitry Samoshin aka gotty
+ */
+public enum RoundComparators {
+
+ ROUND ( new RoundComparator() ),
+ EVENT ( new EventComparator() );
+
+ private Comparator<Round> comparator;
+
+ RoundComparators(Comparator<Round> comparator) {
+ this.comparator = comparator;
+ }
+
+ public Comparator<Round> comparator() {
+ return comparator;
+ }
+
+ static class RoundComparator implements Comparator<Round>, Serializable {
+
+ @Override
+ public int compare(Round round1, Round round2) {
+ return round1.round() - round2.round();
+ }
+
+ }
+
+ static class EventComparator implements Comparator<Round>, Serializable {
+
+ @Override
+ public int compare(Round round1, Round round2) {
+ return round1.eventId() - round2.eventId();
+ }
+
+ }
+
+}