Ci fixes

Jenkinsfile

@@ -46,7 +46,6 @@ stage('Configure') {
 		// We want to enable preview features when testing newer builds of OpenJDK:
 		// even if we don't use these features, just enabling them can cause side effects
 		// and it's useful to test that.
-		new BuildEnvironment( testJdkVersion: '23', testJdkLauncherArgs: '--enable-preview', additionalOptions: '-PskipJacoco=true' ),
 		new BuildEnvironment( testJdkVersion: '24', testJdkLauncherArgs: '--enable-preview', additionalOptions: '-PskipJacoco=true' ),
 		new BuildEnvironment( testJdkVersion: '25', testJdkLauncherArgs: '--enable-preview', additionalOptions: '-PskipJacoco=true' ),
 		// The following JDKs aren't supported by Hibernate ORM out-of-the box yet:

hibernate-core/src/test/java/org/hibernate/orm/test/query/criteria/CriteriaOrderedSetAggregateTest.java

@@ -200,13 +200,14 @@ public void testListaggWithFilterAndWindow(SessionFactoryScope scope) {
 	}
 
 	/*
-	 * 	Skipped for MySQL 9.2: The test fails due to a regression in MySQL 9.2, which no longer supports NULLS FIRST/LAST in ORDER BY within LISTAGG as expected.
+	 * 	Skipped for MySQL 8.0: The test fails due to a regression in MySQL 8.0.x, which no longer supports NULLS FIRST/LAST in ORDER BY within LISTAGG as expected.
 	 *	See https://bugs.mysql.com/bug.php?id=117765 for more details.
 	 *	This is a MySQL issue, not a problem in the dialect implementation.
 	 */
 	@Test
 	@RequiresDialectFeature(feature = DialectFeatureChecks.SupportsStringAggregation.class)
-	@SkipForDialect(dialectClass = MySQLDialect.class, majorVersion = 9, minorVersion = 2, reason = "https://bugs.mysql.com/bug.php?id=117765")
+	@SkipForDialect(dialectClass = MySQLDialect.class, majorVersion = 8, reason = "https://bugs.mysql.com/bug.php?id=117765")
+	@SkipForDialect(dialectClass = MySQLDialect.class, majorVersion = 9, reason = "https://bugs.mysql.com/bug.php?id=117765")
 	public void testListaggWithNullsClause(SessionFactoryScope scope) {
 		scope.inTransaction( session -> {
 			HibernateCriteriaBuilder cb = session.getCriteriaBuilder();

hibernate-core/src/test/java/org/hibernate/orm/test/query/hql/OrderedSetAggregateTest.java

@@ -136,14 +136,15 @@ public void testListaggWithFilter(SessionFactoryScope scope) {
 	}
 
 	/*
-	 * 	Skipped for MySQL 9.2: The test fails due to a regression in MySQL 9.2, which no longer supports NULLS FIRST/LAST in ORDER BY within LISTAGG as expected.
+	 * 	Skipped for MySQL 8.0: The test fails due to a regression in MySQL 8.0.x, which no longer supports NULLS FIRST/LAST in ORDER BY within LISTAGG as expected.
 	 *	See https://bugs.mysql.com/bug.php?id=117765 for more details.
 	 *	This is a MySQL issue, not a problem in the dialect implementation.
 	 */
 	@Test
 	@JiraKey( value = "HHH-15360")
 	@RequiresDialectFeature(feature = DialectFeatureChecks.SupportsStringAggregation.class)
-	@SkipForDialect(dialectClass = MySQLDialect.class, majorVersion = 9, minorVersion = 2, reason = "https://bugs.mysql.com/bug.php?id=117765")
+	@SkipForDialect(dialectClass = MySQLDialect.class, majorVersion = 8, reason = "https://bugs.mysql.com/bug.php?id=117765")
+	@SkipForDialect(dialectClass = MySQLDialect.class, majorVersion = 9, reason = "https://bugs.mysql.com/bug.php?id=117765")
 	public void testListaggWithNullsClause(SessionFactoryScope scope) {
 		scope.inTransaction(
 				session -> {

hibernate-vector/src/test/java/org/hibernate/vector/OracleByteVectorTest.java

@@ -9,6 +9,7 @@
 import org.hibernate.annotations.Array;
 import org.hibernate.annotations.JdbcTypeCode;
 import org.hibernate.dialect.OracleDialect;
+import org.hibernate.testing.orm.junit.SkipForDialect;
 import org.hibernate.type.SqlTypes;
 
 import org.hibernate.testing.orm.junit.DomainModel;
@@ -168,6 +169,7 @@ public void testVectorDims(SessionFactoryScope scope) {
 	}
 
 	@Test
+	@SkipForDialect(dialectClass = OracleDialect.class, reason = "Oracle 23.9 bug")
 	public void testVectorNorm(SessionFactoryScope scope) {
 		scope.inTransaction( em -> {
 			//tag::vector-norm-example[]

hibernate-vector/src/test/java/org/hibernate/vector/OracleDoubleVectorTest.java

@@ -9,6 +9,7 @@
 import org.hibernate.annotations.Array;
 import org.hibernate.annotations.JdbcTypeCode;
 import org.hibernate.dialect.OracleDialect;
+import org.hibernate.testing.orm.junit.SkipForDialect;
 import org.hibernate.type.SqlTypes;
 
 import org.hibernate.testing.orm.junit.DomainModel;
@@ -167,6 +168,7 @@ public void testVectorDims(SessionFactoryScope scope) {
 	}
 
 	@Test
+	@SkipForDialect(dialectClass = OracleDialect.class, reason = "Oracle 23.9 bug")
 	public void testVectorNorm(SessionFactoryScope scope) {
 		scope.inTransaction( em -> {
 			//tag::vector-norm-example[]

hibernate-vector/src/test/java/org/hibernate/vector/OracleFloatVectorTest.java

@@ -9,6 +9,7 @@
 import org.hibernate.annotations.Array;
 import org.hibernate.annotations.JdbcTypeCode;
 import org.hibernate.dialect.OracleDialect;
+import org.hibernate.testing.orm.junit.SkipForDialect;
 import org.hibernate.type.SqlTypes;
 
 import org.hibernate.testing.orm.junit.DomainModel;
@@ -186,6 +187,7 @@ public void testVectorDims(SessionFactoryScope scope) {
 	}
 
 	@Test
+	@SkipForDialect(dialectClass = OracleDialect.class, reason = "Oracle 23.9 bug")
 	public void testVectorNorm(SessionFactoryScope scope) {
 		scope.inTransaction( em -> {
 			//tag::vector-norm-example[]

hibernate-vector/src/test/java/org/hibernate/vector/OracleGenericVectorTest.java

@@ -9,6 +9,7 @@
 import org.hibernate.annotations.Array;
 import org.hibernate.annotations.JdbcTypeCode;
 import org.hibernate.dialect.OracleDialect;
+import org.hibernate.testing.orm.junit.SkipForDialect;
 import org.hibernate.type.SqlTypes;
 
 import org.hibernate.testing.orm.junit.DomainModel;
@@ -187,6 +188,7 @@ public void testVectorDims(SessionFactoryScope scope) {
 	}
 
 	@Test
+	@SkipForDialect(dialectClass = OracleDialect.class, reason = "Oracle 23.9 bug")
 	public void testVectorNorm(SessionFactoryScope scope) {
 		scope.inTransaction( em -> {
 			//tag::vector-norm-example[]

local-build-plugins/src/main/java/org/hibernate/orm/toolchains/JavaModulePlugin.java

@@ -99,8 +99,9 @@ public void execute(JavaCompile compileTask) {
 								@Override
 								public void execute(Task task) {
 									project.getLogger().lifecycle(
-											"Compiling with '{}'",
-											compileTask.getJavaCompiler().get().getMetadata().getInstallationPath()
+											"Compiling with '{}' to release '{}'",
+											compileTask.getJavaCompiler().get().getMetadata().getInstallationPath(),
+											compileTask.getOptions().getRelease().get()
 									);
 								}
 							}

tooling/hibernate-gradle-plugin/hibernate-gradle-plugin.gradle

@@ -3,6 +3,7 @@
  * Copyright Red Hat Inc. and Hibernate Authors
  */
 import org.apache.tools.ant.filters.ReplaceTokens
+import org.gradle.api.internal.provider.DefaultProvider
 
 plugins {
 	id 'java-gradle-plugin'
@@ -119,6 +120,37 @@ if ( !jdkVersions.explicit ) {
 else {
 	logger.warn( "[WARN] Toolchains are not yet supported for Groovy compilation." +
 						 " Using the JDK that runs Gradle for Groovy compilation." )
+	if ( jdkVersions.test.explicit && jdkVersions.test.launcher.asInt() > jdkVersions.min.asInt() ) {
+		// Configure the gradle plugin to also compile test to at most the orm.jdk.min version,
+		// because the test will have to be able to run with a JVM of version orm.jdk.min
+		tasks.named( "compileTestJava", JavaCompile ).configure {
+			options.release = Math.min( jdkVersions.test.compiler.asInt(), jdkVersions.min.asInt() )
+		}
+		// Must configure the test launcher to a version <= orm.jdk.max, because the tests invoke gradle,
+		// which inherently can only run with a JDK up to orm.jdk.max.
+		// Since we only support running Gradle with JDKs in the range of orm.jdk.min up to orm.jdk.max,
+		// we use a test java launcher for the latest available/configured JDK version
+		tasks.named( "test", Test ).configure {
+			def launcher = javaToolchains.launcherFor {
+				languageVersion = jdkVersions.min
+			}
+			for ( int version = jdkVersions.min.asInt() + 1; version <= jdkVersions.max.asInt(); version++ ) {
+				launcher = new DefaultProvider(() -> {
+					try {
+						return javaToolchains.launcherFor {
+							languageVersion = JavaLanguageVersion.of( version )
+						}.get()
+					}
+					catch (GradleException ex) {
+						// JavaToolchainQueryService unfortunately throws an exception if a version is not found,
+						// so we have to catch the exception and return null here to allow a fallback
+						return null
+					}
+				}).orElse( launcher )
+			}
+			javaLauncher = launcher
+		}
+	}
 }
 
 tasks.publish.enabled !ormBuildDetails.hibernateVersion.isSnapshot