Here is a question about bulk insert.
Right after $bulk->insert, i see an MongoDB\BSON\ObjectId retrieved instantly. So how to ensure the ObjectId’s uniqueness? Is bulk_write asking for and ObjectId every time?
MongoDB\Driver\BulkWrite::insert
(mongodb >=1.0.0)
MongoDB\Driver\BulkWrite::insert — Add an insert operation to the bulk
설명
Adds an insert operation to the MongoDB\Driver\BulkWrite.
인수
-
document(array|object) -
A document to insert.
반환값
If the document did not have an
_id, a MongoDB\BSON\ObjectID will
be generated and returned; otherwise, no value is returned.
오류/예외
- Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.
예제
Example #1 MongoDB\Driver\BulkWrite::insert() example
<?php
$bulk = new MongoDB\Driver\BulkWrite;
$document1 = ['title' => 'one'];
$document2 = ['_id' => 'custom ID', 'title' => 'two'];
$document3 = ['_id' => new MongoDB\BSON\ObjectID, 'title' => 'three'];
$_id1 = $bulk->insert($document1);
$_id2 = $bulk->insert($document2);
$_id3 = $bulk->insert($document3);
var_dump($_id1, $_id2, $_id3);
$manager = new MongoDB\Driver\Manager('mongodb://localhost:27017');
$writeConcern = new MongoDB\Driver\WriteConcern(MongoDB\Driver\WriteConcern::MAJORITY, 1000);
$result = $manager->executeBulkWrite('db.collection', $bulk, $writeConcern);
?>
위 예제의 출력 예시:
object(MongoDB\BSON\ObjectID)#3 (1) {
["oid"]=>
string(24) "54d51146bd21b91405401d92"
}
NULL
NULL
참고
- MongoDB\Driver\Manager::executeBulkWrite() - Execute one or more write operations
- MongoDB\Driver\WriteResult
- MongoDB\BSON\ObjectID
- MongoDB\BSON\Persistable
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yedemon at 163 dot com ¶
5 years ago
