[LIB-10] SerialVersionUID for Serializable classes

[snooker-score-api.git] / src / main / java / org / hedgecode / snooker / json / JsonMatches.java

diff --git a/src/main/java/org/hedgecode/snooker/json/JsonMatches.java b/src/main/java/org/hedgecode/snooker/json/JsonMatches.java
index 0d4dd02..70698da 100644 (file)
--- a/src/main/java/org/hedgecode/snooker/json/JsonMatches.java
+++ b/src/main/java/org/hedgecode/snooker/json/JsonMatches.java
@@ -1,5 +1,5 @@
 /*

- * Copyright (c) 2017. Developed by Hedgecode.

+ * Copyright (c) 2017-2020. 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.

@@ -16,6 +16,7 @@
 

 package org.hedgecode.snooker.json;

 

+import java.io.Serializable;

 import java.util.ArrayList;

 import java.util.List;

 

@@ -28,13 +29,17 @@ import org.hedgecode.snooker.compare.MatchComparators;
  *

  * @author Dmitry Samoshin aka gotty

  */

-public class JsonMatches extends JsonCollectionEntity<Match> implements Matches {

+public class JsonMatches extends JsonCollectionEntity<Match> implements Matches, Serializable {

 

-    protected JsonMatches(Match[] entities) {

+    private static final long serialVersionUID = 7399435317464241002L;

+

+    private static final JsonMatches EMPTY = new JsonMatches(new Match[0]);

+

+    JsonMatches(Match[] entities) {

         super(entities);

     }

 

-    protected JsonMatches(List<Match> entities) {

+    JsonMatches(List<Match> entities) {

         super(entities);

     }

 

@@ -44,7 +49,7 @@ public class JsonMatches extends JsonCollectionEntity<Match> implements Matches
         for (Match match : this)

             if (match.eventId() == eventId)

                 matches.add(match);

-        return matches.isEmpty() ? null : new JsonMatches(matches);

+        return matches.isEmpty() ? EMPTY : new JsonMatches(matches);

     }

 

     @Override

@@ -53,7 +58,7 @@ public class JsonMatches extends JsonCollectionEntity<Match> implements Matches
         for (Match match : this)

             if (match.eventId() == eventId && match.round() == round)

                 matches.add(match);

-        return matches.isEmpty() ? null : new JsonMatches(matches);

+        return matches.isEmpty() ? EMPTY : new JsonMatches(matches);

     }

 

     @Override

@@ -62,7 +67,7 @@ public class JsonMatches extends JsonCollectionEntity<Match> implements Matches
         for (Match match : this)

             if (match.player1Id() == playerId || match.player2Id() == playerId)

                 matches.add(match);

-        return matches.isEmpty() ? null : new JsonMatches(matches);

+        return matches.isEmpty() ? EMPTY : new JsonMatches(matches);

     }

 

     @Override

@@ -71,7 +76,7 @@ public class JsonMatches extends JsonCollectionEntity<Match> implements Matches
         for (Match match : this)

             if (match.endDate() != null)

                 matches.add(match);

-        return matches.isEmpty() ? null : new JsonMatches(matches);

+        return matches.isEmpty() ? EMPTY : new JsonMatches(matches);

     }

 

     @Override

@@ -80,7 +85,7 @@ public class JsonMatches extends JsonCollectionEntity<Match> implements Matches
         for (Match match : this)

             if (match.startDate() != null && match.endDate() == null)

                 matches.add(match);

-        return matches.isEmpty() ? null : new JsonMatches(matches);

+        return matches.isEmpty() ? EMPTY : new JsonMatches(matches);

     }

 

     @Override

@@ -89,7 +94,7 @@ public class JsonMatches extends JsonCollectionEntity<Match> implements Matches
         for (Match match : this)

             if (match.startDate() == null)

                 matches.add(match);

-        return matches.isEmpty() ? null : new JsonMatches(matches);

+        return matches.isEmpty() ? EMPTY : new JsonMatches(matches);

     }

 

     @Override