public void listenToDiffs()

in firestore/app/src/main/java/com/google/example/firestore/DocSnippets.java [797:827]

27 lines of code
6 McCabe index (conditional complexity)


    public void listenToDiffs() {
        // [START listen_diffs]
        db.collection("cities")
                .whereEqualTo("state", "CA")
                .addSnapshotListener(new EventListener<QuerySnapshot>() {
                    @Override
                    public void onEvent(@Nullable QuerySnapshot snapshots,
                                        @Nullable FirebaseFirestoreException e) {
                        if (e != null) {
                            Log.w(TAG, "listen:error", e);
                            return;
                        }

                        for (DocumentChange dc : snapshots.getDocumentChanges()) {
                            switch (dc.getType()) {
                                case ADDED:
                                    Log.d(TAG, "New city: " + dc.getDocument().getData());
                                    break;
                                case MODIFIED:
                                    Log.d(TAG, "Modified city: " + dc.getDocument().getData());
                                    break;
                                case REMOVED:
                                    Log.d(TAG, "Removed city: " + dc.getDocument().getData());
                                    break;
                            }
                        }

                    }
                });
        // [END listen_diffs]
    }