add configuration files; add in-memory database for dev and test

.gitignore

@@ -24,3 +24,5 @@
 /dist/
 /nbdist/
 /.nb-gradle/
+
+src/main/resources/application-dev.properties

README.md

@@ -0,0 +1,15 @@
+# Code FREAK
+
+Code Feedback Review & Evaluation Kit | Educational Online IDE
+
+## Development environment setup
+
+1) Set up a database (optional). Currently, drivers for PostgreSQL are included. You can also use the embedded in-memory database.
+2) Create a file `src/main/resources/application-dev.properties`. For documentation on how to configure the
+   server see [application.properties](https://github.com/code-freak/code-freak/blob/master/src/main/resources/application.properties)
+   in the same directory. Minimum configuration that uses the in-memory database:
+   ```
+   spring.jpa.database=HSQL
+   spring.jpa.hibernate.ddl-auto=create
+   ```
+3) Run the command `./gradlew bootRun`. The application is started at http://localhost:8080.

build.gradle

@@ -29,6 +29,7 @@ dependencies {
   implementation 'org.jetbrains.kotlin:kotlin-stdlib-jdk8'
   runtimeOnly 'org.springframework.boot:spring-boot-devtools'
   runtimeOnly 'org.postgresql:postgresql'
+  runtimeOnly 'org.hsqldb:hsqldb'
   testImplementation 'org.springframework.boot:spring-boot-starter-test'
   testImplementation 'org.springframework.security:spring-security-test'
 }

src/main/resources/application.properties

@@ -1 +1,28 @@
+##########################################################################################
+## These environment-specific properties should be placed in application-dev.properties ##
+## and application-prod.properties respectively:                                        ##
+##########################################################################################
 
+# Database configuration, e.g.
+#
+# spring.datasource.url=jdbc:postgresql://localhost:5432/code-freak
+# spring.datasource.username=postgres
+# spring.datasource.password=postgres
+# spring.datasource.driver-class-name=org.postgresql.Driver
+# spring.jpa.database-platform=org.hibernate.dialect.PostgreSQLDialect
+#
+# or in-memory (DO NOT USE IN PRODUCTION)
+#
+# spring.jpa.database=HSQL
+
+# Dev-only
+# spring.jpa.show-sql=true
+# spring.jpa.hibernate.ddl-auto=create
+# logging.level.root=DEBUG
+
+##########################################################################################
+
+spring.profiles.active=dev
+
+# Hides HHH000424: Disabling contextual LOB creation as createClob() method threw error
+logging.level.org.hibernate.engine.jdbc.env.internal.LobCreatorBuilderImpl = WARN

src/test/resources/application-test.properties

@@ -0,0 +1,4 @@
+spring.jpa.database=HSQL
+spring.jpa.show-sql=false
+
+spring.jpa.hibernate.ddl-auto=create