hungphan227 commented on code in PR #1786:
URL: https://github.com/apache/james-project/pull/1786#discussion_r1390620397


##########
mailbox/postgres/src/main/java/org/apache/james/mailbox/postgres/mail/dao/PostgresMailboxDAO.java:
##########
@@ -77,85 +76,74 @@ public Mono<Mailbox> create(MailboxPath mailboxPath, 
UidValidity uidValidity) {
     public Mono<MailboxId> rename(Mailbox mailbox) {
         Preconditions.checkNotNull(mailbox.getMailboxId(), "A mailbox we want 
to rename should have a defined mailboxId");
 
-        return postgresExecutor.dslContext()
-            .flatMap(dslContext -> rename(mailbox, dslContext))
+        return postgresExecutor.executeSingleRowList(dslContext -> 
rename(mailbox, dslContext))
+            .flatMap(records -> {
+                if (records.size() == 0) {
+                    return Mono.error(new 
MailboxNotFoundException(mailbox.getMailboxId()));
+                } else {
+                    return Mono.just(mailbox.getMailboxId());
+                }
+            })
             .onErrorMap(e -> e instanceof DataAccessException && 
e.getMessage().contains(DUPLICATE_VIOLATION_MESSAGE),
                 throwable -> new MailboxExistsException(mailbox.getName()));
     }
 
-    private Mono<MailboxId> rename(Mailbox mailbox, DSLContext dslContext) {
+    private Mono<List<Record>> rename(Mailbox mailbox, DSLContext dslContext) {
         return Flux.from(dslContext.update(TABLE_NAME)

Review Comment:
   fixed



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