GH-836 - Add support for MariaDB database.

spring-modulith-events/spring-modulith-events-jdbc/pom.xml

@@ -104,6 +104,12 @@
 			<scope>test</scope>
 		</dependency>
 
+		<dependency>
+			<groupId>org.testcontainers</groupId>
+			<artifactId>mariadb</artifactId>
+			<scope>test</scope>
+		</dependency>
+
 		<dependency>
 			<groupId>org.testcontainers</groupId>
 			<artifactId>mssqlserver</artifactId>
@@ -140,6 +146,12 @@
 			<scope>test</scope>
 		</dependency>
 
+		<dependency>
+			<groupId>org.mariadb.jdbc</groupId>
+			<artifactId>mariadb-java-client</artifactId>
+			<scope>test</scope>
+		</dependency>
+
 	</dependencies>
 
 </project>

spring-modulith-events/spring-modulith-events-jdbc/src/main/java/org/springframework/modulith/events/jdbc/DatabaseType.java

@@ -50,6 +50,24 @@ enum DatabaseType {
 		}
 	},
 
+	MARIADB("mariadb", "MariaDB") {
+
+		@Override
+		Object uuidToDatabase(UUID id) {
+			return id.toString();
+		}
+
+		@Override
+		UUID databaseToUUID(Object id) {
+			return UUID.fromString(id.toString());
+		}
+
+		@Override
+		boolean isSchemaSupported() {
+			return false;
+		}
+	},
+
 	POSTGRES("postgresql", "PostgreSQL"),
 
 	MSSQL("sqlserver", "Microsoft SQL Server") {

spring-modulith-events/spring-modulith-events-jdbc/src/main/resources/schema-mariadb.sql

@@ -0,0 +1,11 @@
+CREATE TABLE IF NOT EXISTS EVENT_PUBLICATION
+(
+  ID               VARCHAR(36) NOT NULL,
+  LISTENER_ID      VARCHAR(512) NOT NULL,
+  EVENT_TYPE       VARCHAR(512) NOT NULL,
+  SERIALIZED_EVENT VARCHAR(4000) NOT NULL,
+  PUBLICATION_DATE TIMESTAMP(6) NOT NULL,
+  COMPLETION_DATE  TIMESTAMP(6) DEFAULT NULL NULL,
+  PRIMARY KEY (ID),
+  INDEX EVENT_PUBLICATION_BY_COMPLETION_DATE_IDX (COMPLETION_DATE)
+);

spring-modulith-events/spring-modulith-events-jdbc/src/test/java/org/springframework/modulith/events/jdbc/DatabaseSchemaInitializerIntegrationTests.java

@@ -123,6 +123,10 @@ class DatabaseSchemaInitializerIntegrationTests {
 	@ActiveProfiles("mysql")
 	class MySQL extends WithInitEnabled {}
 
+	@Nested
+	@ActiveProfiles("mariadb")
+	class MariaDB extends WithInitEnabled {}
+
 	@Nested
 	@ActiveProfiles("mssql")
 	class MSSQL extends WithInitEnabled {}

spring-modulith-events/spring-modulith-events-jdbc/src/test/java/org/springframework/modulith/events/jdbc/DatabaseSchemaInitializerUnitTests.java

@@ -47,6 +47,13 @@ class DatabaseSchemaInitializerUnitTests {
 		assertThatIllegalStateException().isThrownBy(() -> createInitializer(withSchema(schema), DatabaseType.MYSQL));
 	}
 
+	// GH-836
+	@ParameterizedTest
+	@ValueSource(strings = { "", "test" })
+	void rejectsExplicitSchemaNameForMariDB(String schema) {
+		assertThatIllegalStateException().isThrownBy(() -> createInitializer(withSchema(schema), DatabaseType.MARIADB));
+	}
+
 	// GH-804
 	@ParameterizedTest
 	@ValueSource(strings = { "", "test" })

spring-modulith-events/spring-modulith-events-jdbc/src/test/java/org/springframework/modulith/events/jdbc/JdbcEventPublicationRepositoryIntegrationTests.java

@@ -469,6 +469,14 @@ class JdbcEventPublicationRepositoryIntegrationTests {
 	@WithMySql
 	class MysqlWithDeleteCompletion extends WithDeleteCompletion {}
 
+	// MariaDB
+
+	@WithMariaDB
+	class MariaDBWithNoDefinedSchemaName extends WithNoDefinedSchemaName {}
+
+	@WithMariaDB
+	class MariaDBWithDeleteCompletion extends WithDeleteCompletion {}
+
 	@Value
 	private static final class TestEvent {
 		String eventId;
@@ -493,6 +501,11 @@ class JdbcEventPublicationRepositoryIntegrationTests {
 	@Retention(RetentionPolicy.RUNTIME)
 	@interface WithMySql {}
 
+	@Nested
+	@ActiveProfiles("mariadb")
+	@Retention(RetentionPolicy.RUNTIME)
+	@interface WithMariaDB {}
+
 	@Nested
 	@ActiveProfiles("postgres")
 	@Retention(RetentionPolicy.RUNTIME)

spring-modulith-events/spring-modulith-events-jdbc/src/test/resources/application-mariadb.properties

@@ -0,0 +1,2 @@
+spring.datasource.url=jdbc:tc:mariadb:11.5.2:///events
+spring.datasource.driverClassName=org.testcontainers.jdbc.ContainerDatabaseDriver

src/docs/antora/modules/ROOT/pages/appendix.adoc

@@ -203,6 +203,14 @@ include::{jdbc-schema-base}/schema-hsqldb.sql[]
 include::{jdbc-schema-base}/schema-mysql.sql[]
 ----
 
+[[schemas.mariadb]]
+=== MariaDB
+
+[source, sql]
+----
+include::{jdbc-schema-base}/schema-mariadb.sql[]
+----
+
 [[schemas.postgresql]]
 === PostgreSQL