[BAEL-14836] - Moved code for in-memory database article (#7705)

persistence-modules/spring-boot-persistence/README.MD

@@ -9,3 +9,4 @@
 - [Configuring a DataSource Programmatically in Spring Boot](https://www.baeldung.com/spring-boot-configure-data-source-programmatic)
 - [Resolving “Failed to Configure a DataSource” Error](https://www.baeldung.com/spring-boot-failed-to-configure-data-source)
 - [Spring Boot with Hibernate](https://www.baeldung.com/spring-boot-hibernate)
+- [List of In-Memory Databases](http://www.baeldung.com/java-in-memory-databases)

persistence-modules/spring-boot-persistence/pom.xml

@@ -59,6 +59,20 @@
             <artifactId>validation-api</artifactId>
             <version>${validation-api.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.xerial</groupId>
+            <artifactId>sqlite-jdbc</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.derby</groupId>
+            <artifactId>derby</artifactId>
+            <version>${derby.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.hsqldb</groupId>
+            <artifactId>hsqldb</artifactId>
+            <version>${hsqldb.version}</version>
+        </dependency>
     </dependencies>
 
     <build>
@@ -83,6 +97,8 @@
         <tomcat-jdbc.version>9.0.10</tomcat-jdbc.version>
         <mockito.version>2.23.0</mockito.version>
         <validation-api.version>2.0.1.Final</validation-api.version>
+        <derby.version>10.13.1.1</derby.version>
+        <hsqldb.version>2.3.4</hsqldb.version>
     </properties>
 
 </project>

persistence-modules/spring-boot-persistence/src/main/java/com/baeldung/boot/config/H2JpaConfig.java

@@ -20,6 +20,9 @@ import java.util.Properties;
 @Configuration
 @EnableJpaRepositories(basePackages = { "com.baeldung.boot.repository", "com.baeldung.repository" })
 @PropertySource("classpath:persistence-generic-entity.properties")
+//@PropertySource("classpath:persistence-derby.properties")
+//@PropertySource("classpath:persistence-hsqldb.properties")
+//@PropertySource("classpath:persistence-sqlite.properties")
 @EnableTransactionManagement
 @Profile("default") //only required to allow H2JpaConfig and H2TestProfileJPAConfig to coexist in same project
                     //this demo project is showcasing several ways to achieve the same end, and class-level

persistence-modules/spring-boot-persistence/src/main/resources/persistence-derby.properties

@@ -0,0 +1,8 @@
+jdbc.driverClassName=org.apache.derby.jdbc.EmbeddedDriver
+jdbc.url=jdbc:derby:memory:myD;create=true
+jdbc.user=sa
+jdbc.pass=
+
+hibernate.dialect=org.hibernate.dialect.DerbyDialect
+hibernate.show_sql=true
+hibernate.hbm2ddl.auto=create-drop

persistence-modules/spring-boot-persistence/src/main/resources/persistence-hsqldb.properties

@@ -0,0 +1,8 @@
+jdbc.driverClassName=org.hsqldb.jdbc.JDBCDriver
+jdbc.url=jdbc:hsqldb:mem:myDb
+jdbc.user=sa
+jdbc.pass=
+
+hibernate.dialect=org.hibernate.dialect.HSQLDialect
+hibernate.show_sql=true
+hibernate.hbm2ddl.auto=create-drop

persistence-modules/spring-boot-persistence/src/main/resources/persistence-sqlite.properties

@@ -0,0 +1,7 @@
+jdbc.driverClassName=org.sqlite.JDBC
+jdbc.url=jdbc:sqlite:memory:myDb?cache=shared
+jdbc.user=sa
+jdbc.pass=sa
+hibernate.dialect=com.baeldung.dialect.SQLiteDialect
+hibernate.hbm2ddl.auto=create-drop
+hibernate.show_sql=true

spring-data-rest/README.md

@@ -17,7 +17,6 @@ To view the running application, visit [http://localhost:8080](http://localhost:
 - [Guide to Spring Data REST Validators](http://www.baeldung.com/spring-data-rest-validators)
 - [Working with Relationships in Spring Data REST](http://www.baeldung.com/spring-data-rest-relationships)
 - [AngularJS CRUD Application with Spring Data REST](http://www.baeldung.com/angularjs-crud-with-spring-data-rest)
-- [List of In-Memory Databases](http://www.baeldung.com/java-in-memory-databases)
 - [Projections and Excerpts in Spring Data REST](http://www.baeldung.com/spring-data-rest-projections-excerpts)
 - [Spring Data REST Events with @RepositoryEventHandler](http://www.baeldung.com/spring-data-rest-events)
 - [Customizing HTTP Endpoints in Spring Data REST](https://www.baeldung.com/spring-data-rest-customize-http-endpoints)