FirebaseFirestore Framework Reference

FIRSnapshotMetadata

@interface FIRSnapshotMetadata : NSObject

Metadata about a snapshot, describing the state of the snapshot.

• pendingWrites

  Returns true if the snapshot contains the result of local writes (e.g. set() or update() calls) that have not yet been committed to the backend. If your listener has opted into metadata updates (via includeMetadataChanges:true) you will receive another snapshot with hasPendingWrites equal to false once the writes have been committed to the backend.

  Declaration

  Objective-C

  @property (nonatomic, assign, unsafe_unretained, readonly,
            getter=hasPendingWrites) BOOL pendingWrites;

• fromCache

  Returns true if the snapshot was created from cached data rather than guaranteed up-to-date server data. If your listener has opted into metadata updates (via includeMetadataChanges:true) you will receive another snapshot with isFromCache equal to false once the client has received up-to-date data from the backend.

  Declaration

  Objective-C

  @property (nonatomic, readonly, getter=isFromCache) BOOL fromCache;