HHH-19559 test for schema-based multitenancy

Author: gavinking

hibernate-core/src/test/java/org/hibernate/orm/test/multitenancy/SchemaBasedMultitenancyTest.java

@@ -0,0 +1,71 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.orm.test.multitenancy;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.hibernate.context.spi.CurrentTenantIdentifierResolver;
+import org.hibernate.context.spi.TenantSchemaMapper;
+import org.hibernate.relational.SchemaManager;
+import org.hibernate.annotations.TenantId;
+import org.hibernate.testing.orm.junit.EntityManagerFactoryScope;
+import org.hibernate.testing.orm.junit.Jpa;
+import org.hibernate.testing.orm.junit.Setting;
+import org.junit.jupiter.api.Test;
+
+import static org.hibernate.cfg.MultiTenancySettings.MULTI_TENANT_IDENTIFIER_RESOLVER;
+import static org.hibernate.cfg.MultiTenancySettings.MULTI_TENANT_SCHEMA_MAPPER;
+
+@Jpa(annotatedClasses = {SchemaBasedMultitenancyTest.Person.class},
+		integrationSettings =
+				{@Setting(name = MULTI_TENANT_SCHEMA_MAPPER,
+						value = "org.hibernate.orm.test.multitenancy.SchemaBasedMultitenancyTest$MyMapper"),
+				@Setting(name = MULTI_TENANT_IDENTIFIER_RESOLVER,
+						value = "org.hibernate.orm.test.multitenancy.SchemaBasedMultitenancyTest$MyResolver")})
+public class SchemaBasedMultitenancyTest {
+	@Test void test(EntityManagerFactoryScope scope) {
+		var schemaManager = (SchemaManager) scope.getEntityManagerFactory().getSchemaManager();
+		SchemaManager managerForTenantSchema = schemaManager.forSchema( "HELLO" );
+		managerForTenantSchema.drop(true);
+		managerForTenantSchema.create( true );
+		scope.inTransaction( session -> {
+			Person person = new Person();
+			person.ssn = "123456789";
+			person.tenantId = "hello";
+			person.name = "Gavin";
+			session.persist( person );
+		} );
+	}
+
+	@Entity(name = "PersonForTenant")
+	static class Person {
+		@Id
+		String ssn;
+		@TenantId
+		String tenantId;
+		private String name;
+	}
+
+	public static class MyResolver implements CurrentTenantIdentifierResolver<String> {
+		@Override
+		public @NonNull String resolveCurrentTenantIdentifier() {
+			return "hello";
+		}
+
+		@Override
+		public boolean validateExistingCurrentSessions() {
+			return false;
+		}
+	}
+
+	public static class MyMapper implements TenantSchemaMapper<String> {
+		@Override
+		public @NonNull String schemaName(@NonNull String tenantIdentifier) {
+			return tenantIdentifier;
+		}
+	}
+
+}