HHH-19935 Make sure that increment to current sequence can not be zero

cigaly · cigaly · commit 5e24fd49754f · 2025-11-17T15:01:04.000+01:00
diff --git a/hibernate-core/src/main/java/org/hibernate/id/uuid/UuidVersion7Strategy.java b/hibernate-core/src/main/java/org/hibernate/id/uuid/UuidVersion7Strategy.java
@@ -64,7 +64,7 @@ public State getNextState() {
 				return new State( now, randomSequence() );
 			}
 			else {
-				final long nextSequence = lastSequence + Holder.numberGenerator.nextLong( 0xFFFF_FFFFL );
+				final long nextSequence = lastSequence + Holder.numberGenerator.nextLong( 0xFFFF_FFFEL ) + 1;
 				return nextSequence > MAX_RANDOM_SEQUENCE
 						? new State( lastTimestamp.plusNanos( 250 ), randomSequence() )
 						: new State( lastTimestamp, nextSequence );

Original file line number	Diff line number	Diff line change
`@@ -64,7 +64,7 @@ public State getNextState() {`
`64`	`64`	`return new State( now, randomSequence() );`
`65`	`65`	`}`
`66`	`66`	`else {`
`67`		`- final long nextSequence = lastSequence + Holder.numberGenerator.nextLong( 0xFFFF_FFFFL );`
	`67`	`+ final long nextSequence = lastSequence + Holder.numberGenerator.nextLong( 0xFFFF_FFFEL ) + 1;`
`68`	`68`	`return nextSequence > MAX_RANDOM_SEQUENCE`
`69`	`69`	`? new State( lastTimestamp.plusNanos( 250 ), randomSequence() )`
`70`	`70`	`: new State( lastTimestamp, nextSequence );`