[LIB-8] Add Event Rounds and Seedings functional
[snooker-score-api.git] / src / main / java / org / hedgecode / snooker / compare / RoundComparators.java
diff --git a/src/main/java/org/hedgecode/snooker/compare/RoundComparators.java b/src/main/java/org/hedgecode/snooker/compare/RoundComparators.java
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+/*
+ * 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();
+        }
+
+    }
+
+}