Bulk.getOperations()

Example实例

The following initializes a Bulk() operations builder on the items collection, adds a series of write operations, executes the operations, and then calls getOperations() on the bulk builder object:下面初始化items集合上的Bulk()操作生成器，添加一系列写操作，执行这些操作，然后调用bulk生成器对象上的getOperations()：

var bulk = db.items.initializeUnorderedBulkOp();

for (var i = 1; i <= 1500; i++) {
    bulk.insert( { x: i } );
}

bulk.execute();
bulk.getOperations();

The getOperations() method returns an array with the operations executed. getOperations()方法返回一个数组，其中包含已执行的操作。The output shows that MongoDB divided the operations into 2 groups, one with 1000 operations and one with 500. For information on how MongoDB groups the list of bulk write operations, see Bulk.execute() Behavior输出显示MongoDB将操作分为两组，一组有1000个操作，另一组有500个操作。有关MongoDB如何对批量写入操作列表进行分组的信息，请参阅Bulk.execute()行为

Although the method returns all 1500 operations in the returned array, this page omits some of the results for brevity.尽管该方法返回返回的数组中的所有1500个操作，但为了简洁起见，本页省略了一些结果。

[
   {
      "originalZeroIndex" : 0,
      "batchType" : 1,
      "operations" : [
         { "_id" : ObjectId("53a8959f1990ca24d01c6165"), "x" : 1 },

         ... // Content omitted for brevity

         { "_id" : ObjectId("53a8959f1990ca24d01c654c"), "x" : 1000 }
      ]
   },
   {
      "originalZeroIndex" : 1000,
      "batchType" : 1,
      "operations" : [
         { "_id" : ObjectId("53a8959f1990ca24d01c654d"), "x" : 1001 },

         ... // Content omitted for brevity

         { "_id" : ObjectId("53a8959f1990ca24d01c6740"), "x" : 1500 }
      ]
   }
]

Returned Fields返回的字段

The array contains documents with the following fields:该数组包含具有以下字段的文档：

originalZeroIndex

Specifies the order in which the operation was added to the bulk operations builder, based on a zero index; e.g. first operation added to the bulk operations builder will have originalZeroIndex value of 0.指定基于零索引将操作添加到批量操作生成器的顺序；例如，添加到批量操作生成器的第一个操作的originalZeroIndex值为0。

batchType

Specifies the write operations type.指定写入操作类型。

batchType	Operation操作
1	Insert
2	Update
3	Remove

operations

Array of documents that contain the details of the operation.包含操作详细信息的文档数组。