From f024f6e83287060549d908f100a5f14277668168 Mon Sep 17 00:00:00 2001
From: Jeff Lockhart <jeffdgr8@gmail.com>
Date: Fri, 9 Feb 2024 10:42:33 -0700
Subject: [PATCH] Check collection equality using isEqual:

Allow separate references to the same collection
---
 Objective-C/CBLCollection.mm | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Objective-C/CBLCollection.mm b/Objective-C/CBLCollection.mm
index 196d2d956..57511cbdd 100644
--- a/Objective-C/CBLCollection.mm
+++ b/Objective-C/CBLCollection.mm
@@ -779,7 +779,7 @@ - (BOOL) saveDocument: (CBLDocument*)document
 - (BOOL) prepareDocument: (CBLDocument*)document error: (NSError**)error {
     if (!document.collection) {
         document.collection = self;
-    } else if (document.collection != self) {
+    } else if (![document.collection isEqual:self]) {
         return createError(CBLErrorInvalidParameter,
                            kCBLErrorMessageDocumentAnotherCollection, error);
     }
@@ -847,7 +847,7 @@ - (bool) resolveConflictInDocument: (NSString*)docID
                         resolvedDoc.id, docID);
             }
             
-            if (resolvedDoc && resolvedDoc.collection && resolvedDoc.collection != self) {
+            if (resolvedDoc && resolvedDoc.collection && ![resolvedDoc.collection isEqual:self]) {
                 [NSException raise: NSInternalInconsistencyException
                             format: kCBLErrorMessageResolvedDocWrongDb,
                  resolvedDoc.collection.name, self.name];