GH-1450 - Register SQL schemas as native image resources.

Author: odrotbohm

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

@@ -0,0 +1,44 @@
+/*
+ * Copyright 2025 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.modulith.events.jdbc;
+
+import java.util.stream.Stream;
+
+import org.springframework.aot.hint.RuntimeHints;
+import org.springframework.aot.hint.RuntimeHintsRegistrar;
+import org.springframework.lang.Nullable;
+
+/**
+ * AOT resource hints for the database schemas.
+ *
+ * @author Oliver Drotbohm
+ */
+class DatabaseSchemaHints implements RuntimeHintsRegistrar {
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.aot.hint.RuntimeHintsRegistrar#registerHints(org.springframework.aot.hint.RuntimeHints, java.lang.ClassLoader)
+	 */
+	@Override
+	public void registerHints(RuntimeHints hints, @Nullable ClassLoader classLoader) {
+
+		Stream.of(DatabaseType.values())
+				.map(DatabaseType::name)
+				.map(String::toLowerCase)
+				.flatMap(it -> Stream.of("schema-" + it + ".sql", "schema-" + it + "-archive.sql"))
+				.forEach(hints.resources()::registerPattern);
+	}
+}

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

@@ -108,6 +108,7 @@ boolean isSchemaSupported() {
 	};
 
 	static final String SCHEMA_NOT_SUPPORTED = "Setting the schema name is not supported!";
+	static final String SCHEMA_ROOT = "schema-";
 
 	static DatabaseType from(String productName) {
 
@@ -136,10 +137,12 @@ UUID databaseToUUID(Object id) {
 	}
 
 	String getSchemaResourceFilename() {
-		return "/schema-" + value + ".sql";
+		return SCHEMA_ROOT + value + ".sql";
 	}
 
-	String getArchiveSchemaResourceFilename() { return "/schema-" + value + "-archive.sql"; }
+	String getArchiveSchemaResourceFilename() {
+		return SCHEMA_ROOT + value + "-archive.sql";
+	}
 
 	boolean isSchemaSupported() {
 		return true;

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

@@ -0,0 +1,51 @@
+/*
+ * Copyright 2025 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.modulith.events.jdbc;
+
+import static org.assertj.core.api.Assertions.*;
+
+import java.util.function.Predicate;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.aot.hint.ResourcePatternHint;
+import org.springframework.aot.hint.ResourcePatternHints;
+import org.springframework.aot.hint.RuntimeHints;
+
+/**
+ * Unit tests for {@link DatabaseSchemaHints}.
+ *
+ * @author Oliver Drotbohm
+ */
+class DatabaseSchemaHintsUnitTests {
+
+	@Test // GH-1450
+	void registersRuntimeHintsForSchemas() {
+
+		var registrar = new DatabaseSchemaHints();
+		var hints = new RuntimeHints();
+
+		registrar.registerHints(hints, DatabaseSchemaHintsUnitTests.class.getClassLoader());
+
+		assertThat(hints.resources().resourcePatternHints())
+				.flatExtracting(ResourcePatternHints::getIncludes)
+				.extracting(ResourcePatternHint::getPattern)
+				.filteredOn(Predicate.not("/"::equals))
+				.hasSize(DatabaseType.values().length * 2)
+				.allSatisfy(it -> {
+					assertThat(it).matches("schema-.*\\.sql");
+				});
+	}
+}