GH-804 - Support for schema initialization on Microsoft SQL Server.

Original pull request: GH-808.

Author: Øyvind Johannessen

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

@@ -104,6 +104,18 @@
 			<scope>test</scope>
 		</dependency>
 
+		<dependency>
+			<groupId>org.testcontainers</groupId>
+			<artifactId>mssqlserver</artifactId>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>com.microsoft.sqlserver</groupId>
+			<artifactId>mssql-jdbc</artifactId>
+			<scope>test</scope>
+		</dependency>
+
 		<dependency>
 			<groupId>org.hsqldb</groupId>
 			<artifactId>hsqldb</artifactId>

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

@@ -45,7 +45,20 @@ UUID databaseToUUID(Object id) {
 		}
 	},
 
-	POSTGRES("postgresql", "PostgreSQL");
+	POSTGRES("postgresql", "PostgreSQL"),
+
+	MSSQL("sqlserver", "Microsoft SQL Server"){
+
+		@Override
+		Object uuidToDatabase(UUID id) {
+			return id.toString();
+		}
+
+		@Override
+		UUID databaseToUUID(Object id) {
+			return UUID.fromString(id.toString());
+		}
+	};
 
 	static final String SCHEMA_NOT_SUPPORTED = "Setting the schema name not supported on MySQL!";
 
@@ -86,6 +99,7 @@ String getSetSchemaSql(String schema) {
 			case MYSQL -> throw new IllegalArgumentException(SCHEMA_NOT_SUPPORTED);
 			case H2, HSQLDB -> "SET SCHEMA " + schema;
 			case POSTGRES -> "SET search_path TO " + schema;
+			case MSSQL -> "";  // No equivalent schema-switching command in MSSQL
 		};
 	}
 }

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

@@ -0,0 +1,12 @@
+IF NOT EXISTS(SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'EVENT_PUBLICATION')
+CREATE TABLE EVENT_PUBLICATION
+(
+  ID               VARCHAR(36) NOT NULL,
+  LISTENER_ID      VARCHAR(512) NOT NULL,
+  EVENT_TYPE       VARCHAR(512) NOT NULL,
+  SERIALIZED_EVENT VARCHAR(MAX) NOT NULL,
+  PUBLICATION_DATE DATETIME2(6) NOT NULL,
+  COMPLETION_DATE  DATETIME2(6) 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

@@ -122,4 +122,8 @@ class Postgres extends WithInitEnabled {}
 	@Nested
 	@ActiveProfiles("mysql")
 	class MySQL extends WithInitEnabled {}
+
+	@Nested
+	@ActiveProfiles("mssql")
+	class MSSQL extends WithInitEnabled {}
 }

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

@@ -453,6 +453,16 @@ class PostgresWithEmptySchemaName extends WithEmptySchemaName {}
 	@WithPostgres
 	class PostgresWithDeleteCompletion extends WithDeleteCompletion {}
 
+	// MSSQL
+	@WithMssql
+	class MssqlWithNoDefinedSchemaName extends WithNoDefinedSchemaName {}
+
+	@WithMssql
+	class MssqlWithEmptySchemaName extends WithEmptySchemaName {}
+
+	@WithMssql
+	class MssqlWithDeleteCompletion extends WithDeleteCompletion {}
+
 	// MySQL
 
 	@WithMySql
@@ -489,4 +499,9 @@ private static final class Sample {}
 	@ActiveProfiles("postgres")
 	@Retention(RetentionPolicy.RUNTIME)
 	@interface WithPostgres {}
+
+	@Nested
+	@ActiveProfiles("mssql")
+	@Retention(RetentionPolicy.RUNTIME)
+	@interface WithMssql {}
 }

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

@@ -0,0 +1,2 @@
+spring.datasource.url=jdbc:tc:sqlserver:2022-latest:///events;encrypt=false;TC_ACCEPT_LICENSE=accept
+spring.datasource.driverClassName=org.testcontainers.jdbc.ContainerDatabaseDriver