refactor: #2366 Change h2 database usage to in mem (#2776)

* fix: Change h2 database usage to in mem (#2366)

* #2366 Add delay option

serialized-entity/README.md

@@ -136,7 +136,7 @@ methods to read and deserialize data items to `Country` objects.
 ```java
 @Slf4j
 public class App {
-    private static final String DB_URL = "jdbc:h2:~/test";
+    private static final String DB_URL = "jdbc:h2:mem:testdb;DB_CLOSE_DELAY=-1";
 
     private App() {
 

serialized-entity/src/main/java/com/iluwatar/serializedentity/App.java

@@ -48,7 +48,7 @@ import org.h2.jdbcx.JdbcDataSource;
  */
 @Slf4j
 public class App {
-  private static final String DB_URL = "jdbc:h2:~/test";
+  private static final String DB_URL = "jdbc:h2:mem:testdb";
 
   private App() {
 

serialized-entity/src/test/java/com/iluwatar/serializedentity/AppTest.java

@@ -1,3 +1,27 @@
+/*
+ * This project is licensed under the MIT license. Module model-view-viewmodel is using ZK framework licensed under LGPL (see lgpl-3.0.txt).
+ *
+ * The MIT License
+ * Copyright © 2014-2022 Ilkka Seppälä
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
 package com.iluwatar.serializedentity;
 
 import org.junit.jupiter.api.Test;