发布于 2015-09-14 14:57:03 | 302 次阅读 | 评论: 0 | 来源: 网络整理
cursor.objsLeftInBatch() returns the number of documents remaining in the current batch.
The MongoDB instance returns response in batches. To retrieve all the documents from a cursor may require multiple batch responses from the MongoDB instance. When there are no more documents remaining in the current batch, the cursor will retrieve another batch to get more documents until the cursor exhausts.