[tarantool-patches] Re: [PATCH v4 4/4] sql: do not increase row-count if INSERT or REPLACE failed

[Mergen Imeev <imeevma@tarantool.org>]

Hi! Thank you for review! Just before sending patch to Kirill, I
discovered that the function sequence_get_value() returns only 0.
Because of this, it makes no sense to check the result of the
function. Since this function used a special argument to return a
value, I deleted this argument and made the function now return
this value.

Diff below.

On Mon, Jul 22, 2019 at 01:48:44PM +0300, n.pettik wrote:
> I’ve force pushed a couple of cosmetic fixes.
> Also added check of return value of
> vdbe_add_new_autoinc_id() - it can fail due to OOM.
> 
> Now LGTM.
i> 

diff --git a/src/box/sequence.c b/src/box/sequence.c
index 5996519..1aacc50 100644
--- a/src/box/sequence.c
+++ b/src/box/sequence.c
@@ -363,8 +363,8 @@ sequence_data_iterator_create(void)
 	return &iter->base;
 }
 
-int
-sequence_get_value(struct sequence *seq, int64_t *out_value)
+int64_t
+sequence_get_value(struct sequence *seq)
 {
 	uint32_t key = seq->def->id;
 	uint32_t hash = sequence_hash(key);
@@ -372,6 +372,5 @@ sequence_get_value(struct sequence *seq, int64_t *out_value)
 	assert(pos != light_sequence_end);
 	struct sequence_data data = light_sequence_get(&sequence_data_index,
 						       pos);
-	*out_value = data.value;
-	return 0;
+	return data.value;
 }
diff --git a/src/box/sequence.h b/src/box/sequence.h
index b56236e..976020a 100644
--- a/src/box/sequence.h
+++ b/src/box/sequence.h
@@ -171,11 +171,10 @@ sequence_data_iterator_create(void);
  * Get last element of given sequence.
  *
  * @param seq sequence to get value from.
- * @param[out] out_value last element of sequence.
- * @retval 0 on success, -1 on error.
+ * @retval last element of sequence.
  */
-int
-sequence_get_value(struct sequence *seq, int64_t *out_value);
+int64_t
+sequence_get_value(struct sequence *seq);
 
 #if defined(__cplusplus)
 } /* extern "C" */
diff --git a/src/box/sql/vdbe.c b/src/box/sql/vdbe.c
index f771843..431b4d9 100644
--- a/src/box/sql/vdbe.c
+++ b/src/box/sql/vdbe.c
@@ -4224,9 +4224,7 @@ case OP_IdxInsert: {
 	}
 	if (rc == 0 && pOp->p3 > 0 && ((aMem[pOp->p3].flags) & MEM_Null) != 0) {
 		assert(space->sequence != NULL);
-		int64_t value;
-		if (sequence_get_value(space->sequence, &value) != 0)
-			goto abort_due_to_error;
+		int64_t value = sequence_get_value(space->sequence);
 		if (vdbe_add_new_autoinc_id(p, value) != 0)
 			goto abort_due_to_error;
 	}