是否可以同时运行Firestore和Firebase-Storage的事务和批处理写入？

Question

Use-Case：我必须在单个[中编写一些document_1更新，并使用Transactions和分批写入。可能吗？如果可能的话如何？ [[Note

：完成时所有四个异步任务都应该成功，否则所有四个任务都应该失败。如果只能读写大小写，则此Transactions and batched writes documentation可以提供帮助。但是在我们的例子中，文件读取-上传-删除任务也是如此。

Future<void> _runTransaction() async {
firestore.runTransaction((Transaction transaction) async {
  final allDocs = await firestore.collection("messages").getDocuments();
  final toBeRetrieved =
      allDocs.documents.sublist(allDocs.documents.length ~/ 2);
  final toBeDeleted =
      allDocs.documents.sublist(0, allDocs.documents.length ~/ 2);
  await Future.forEach(toBeDeleted, (DocumentSnapshot snapshot) async {
    await transaction.delete(snapshot.reference);
  });

  await Future.forEach(toBeRetrieved, (DocumentSnapshot snapshot) async {
    await transaction.update(snapshot.reference, {
      "message": "Updated from Transaction",
      "created_at": FieldValue.serverTimestamp()
    });
  });
});

await Future.forEach(List.generate(2, (index) => index), (item) async {
  await firestore.runTransaction((Transaction transaction) async {
    await Future.forEach(List.generate(10, (index) => index), (item) async {
      await transaction.set(firestore.collection("messages").document(), {
        "message": "Created from Transaction $item",
        "created_at": FieldValue.serverTimestamp()
      });
    });
  });
});

}

用例：我必须使用事务和批处理写入的单个事务在document_2中写入一些document_1更新，并从document_storage中删除document_3和delete file_4。是...

Answer 1