Bulk.getOperations()
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Bulk.getOperations()
Returns an array of write operations executed through
Bulk.execute()
. The returned write operations are in groups as determined by MongoDB for execution. For information on how MongoDB groups the list of bulk write operations, see Bulk.execute() Behavior.Only use
Bulk.getOperations()
after aBulk.execute()
. CallingBulk.getOperations()
before you callBulk.execute()
will result in an incomplete list.
Example
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:
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. 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
Although the method returns all 1500 operations in the returned array, this page omits some of the results for brevity.
[ { "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
The array contains documents with the following fields:
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 of0
.