Remove abstractions of MMapDirectory and its "fake" MR-JAR support and move it to main sourceSet (vectors untouched)

gradle/generation/extract-jdk-apis.gradle

@@ -20,7 +20,7 @@ def resources = scriptResources(buildscript)
 configure(project(":lucene:core")) {
   ext {
     apijars = layout.projectDirectory.dir("src/generated/jdk")
-    mrjarJavaVersions = [ 21 ]
+    mrjarJavaVersions = [ 24 ]
   }
 
   configurations {

gradle/generation/extract-jdk-apis/ExtractJdkApis.java

@@ -47,14 +47,13 @@
 
 public final class ExtractJdkApis {
 
-  private static final FileTime FIXED_FILEDATE = FileTime.from(Instant.parse("2022-01-01T00:00:00Z"));
+  private static final FileTime FIXED_FILEDATE = FileTime.from(Instant.parse("2025-04-29T00:00:00Z"));
 
-  private static final String PATTERN_PANAMA_FOREIGN      = "java.base/{java/lang/foreign/*,java/nio/channels/FileChannel}";
   private static final String PATTERN_VECTOR_INCUBATOR    = "jdk.incubator.vector/jdk/incubator/vector/*";
   private static final String PATTERN_VECTOR_VM_INTERNALS = "java.base/jdk/internal/vm/vector/VectorSupport{,$Vector,$VectorMask,$VectorPayload,$VectorShuffle}";
 
   static final Map<Integer,List<String>> CLASSFILE_PATTERNS = Map.of(
-      21, List.of(PATTERN_PANAMA_FOREIGN, PATTERN_VECTOR_VM_INTERNALS, PATTERN_VECTOR_INCUBATOR)
+      24, List.of(PATTERN_VECTOR_VM_INTERNALS, PATTERN_VECTOR_INCUBATOR)
   );
 
   public static void main(String... args) throws IOException {

gradle/java/core-mrjar.gradle

@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 
-// Produce an MR-JAR with Java 19+ foreign and vector implementations
+// Produce an MR-JAR for panama vector implementations
 
 configure(project(":lucene:core")) {
   plugins.withType(JavaPlugin) {
@@ -52,7 +52,7 @@ configure(project(":lucene:core")) {
       mrjarJavaVersions.each { jdkVersion ->
         // the sourceSet which corresponds to the minimum/base Java version
         // will copy its output to root of JAR, all other sourceSets will go into MR-JAR folders:
-        boolean isBaseVersion = (jdkVersion.toString() == rootProject.minJavaVersion.toString())
+        boolean isBaseVersion = (jdkVersion.toString() as int <= rootProject.minJavaVersion.toString() as int)
         into(isBaseVersion ? '' : "META-INF/versions/${jdkVersion}") {
           from sourceSets["main${jdkVersion}"].output
         }

lucene/CHANGES.txt

@@ -52,6 +52,8 @@ Other
 
 * GITHUB#14229: Bump minimum required Java version to 25
 
+* GITHUB#14564: Remove abstractions from MMapDirectory as we need no MR-JAR anymore.  (Uwe Schindler)
+
 ======================= Lucene 10.3.0 =======================
 
 API Changes