Remove predecessorKey,Object,Document, etc (#735)

This is dead code.

I think it was probably useful in the RTDB because of the way it notified of changes, but we give changes with indexes in Firestore so I think we don't need it.

2 files changed, 0 insertions, 20 deletions

diff --git a/Firestore/Source/Model/FSTDocumentSet.h b/Firestore/Source/Model/FSTDocumentSet.h
index a7f8c4a..022e900 100644
--- a/Firestore/Source/Model/FSTDocumentSet.h
+++ b/Firestore/Source/Model/FSTDocumentSet.h
@@ -59,16 +59,6 @@ NS_ASSUME_NONNULL_BEGIN
 - (FSTDocument *_Nullable)lastDocument;
 
 /**
- * Returns the document previous to the document associated with the given key in the set according
- * to its built in ordering. Returns nil if the document associated with the given key is the
- * first document.
- *
- * @param key A key that must be present in the DocumentSet.
- * @throws NSInvalidArgumentException if key is not present.
- */
-- (FSTDocument *_Nullable)predecessorDocumentForKey:(FSTDocumentKey *)key;
-
-/**
  * Returns the index of the document with the provided key in the document set. Returns NSNotFound
  * if the key is not present.
  */
diff --git a/Firestore/Source/Model/FSTDocumentSet.mm b/Firestore/Source/Model/FSTDocumentSet.mm
index c4c0f49..6f44799 100644
--- a/Firestore/Source/Model/FSTDocumentSet.mm
+++ b/Firestore/Source/Model/FSTDocumentSet.mm
@@ -135,16 +135,6 @@ typedef FSTImmutableSortedSet<FSTDocument *> SetType;
   return [self.sortedSet lastObject];
 }
 
-- (FSTDocument *_Nullable)predecessorDocumentForKey:(FSTDocumentKey *)key {
-  FSTDocument *doc = [self.index objectForKey:key];
-  if (!doc) {
-    @throw [NSException exceptionWithName:NSInvalidArgumentException
-                                   reason:[NSString stringWithFormat:@"Key %@ does not exist", key]
-                                 userInfo:nil];
-  }
-  return [self.sortedSet predecessorObject:doc];
-}
-
 - (NSUInteger)indexOfKey:(FSTDocumentKey *)key {
   FSTDocument *doc = [self.index objectForKey:key];
   return doc ? [self.sortedSet indexOfObject:doc] : NSNotFound;