src/java.base/share/classes/java/time/chrono/ChronoLocalDateTime.java

rev 17010 : 8178889: Move creation of AbstractChronology comparators to call sites
Reviewed-by: tbd

@@ -64,10 +64,11 @@
 import static java.time.temporal.ChronoField.EPOCH_DAY;
 import static java.time.temporal.ChronoField.NANO_OF_DAY;
 import static java.time.temporal.ChronoUnit.FOREVER;
 import static java.time.temporal.ChronoUnit.NANOS;
 
+import java.io.Serializable;
 import java.time.DateTimeException;
 import java.time.Instant;
 import java.time.LocalDateTime;
 import java.time.LocalTime;
 import java.time.ZoneId;

@@ -134,11 +135,17 @@
      * @see #isAfter
      * @see #isBefore
      * @see #isEqual
      */
     static Comparator<ChronoLocalDateTime<?>> timeLineOrder() {
-        return AbstractChronology.DATE_TIME_ORDER;
+        return (Comparator<ChronoLocalDateTime<? extends ChronoLocalDate>> & Serializable) (dateTime1, dateTime2) -> {
+            int cmp = Long.compare(dateTime1.toLocalDate().toEpochDay(), dateTime2.toLocalDate().toEpochDay());
+            if (cmp == 0) {
+                cmp = Long.compare(dateTime1.toLocalTime().toNanoOfDay(), dateTime2.toLocalTime().toNanoOfDay());
+            }
+            return cmp;
+        };
     }
 
     //-----------------------------------------------------------------------
     /**
      * Obtains an instance of {@code ChronoLocalDateTime} from a temporal object.