MongoWriteBatch::add - Adds a write operation to a batch
Вернуться к: MongoWriteBatch
MongoWriteBatch::add
(PECL mongo >= 1.5.0)
MongoWriteBatch::add — Adds a write operation to a batch
Описание
$item
)Adds a write operation to the batch.
If $item causes the batch to exceed the
» maxWriteBatchSize
or » maxBsonObjectSize
limits, the driver will internally split the batches into multiple write
commands upon calling MongoWriteBatch::execute().
Список параметров
-
item -
An array that describes a write operation. The structure of this value depends on the batch's operation type.
Batch type Argument expectation MongoWriteBatch::COMMAND_INSERTThe document to add. MongoWriteBatch::COMMAND_UPDATERaw update operation.
Required keys are "q" and "u", which correspond to the
$criteriaand$new_objectparameters of MongoCollection::update(), respectively.Optional keys are "multi" and "upsert", which correspond to the "multiple" and "upsert" options for MongoCollection::update(), respectively. If unspecified, both options default to
FALSE.MongoWriteBatch::COMMAND_DELETERaw delete operation.
Required keys are: "q" and "limit", which correspond to the
$criteriaparameter and "justOne" option of MongoCollection::remove(), respectively.The "limit" option is an integer; however, MongoDB only supports 0 (i.e. remove all matching documents) and 1 (i.e. remove at most one matching document) at this time.
Возвращаемые значения
Returns TRUE on success and throws an exception on failure.
Ошибки
Примеры
Пример #1 MongoWriteBatch::add() example
Batching up multiple insert operations
<?php
$mc = new MongoClient("localhost");
$collection = $mc->selectCollection("test", "test");
$docs = array();
$docs[] = array("my" => "demo");
$docs[] = array("is" => "working");
$docs[] = array("pretty" => "well");
$batch = new MongoInsertBatch($collection);
foreach($docs as $document) {
$batch->add($document);
}
$batch->execute(array("w" => 1));
?>
Пример #2 MongoWriteBatch::add() example
Batching up multiple update operations
<?php
$mc = new MongoClient("localhost");
$collection = $mc->selectCollection("test", "test");
$item1 = array(
"q" => array("my" => "demo"),
"u" => array('$set' => array("try" => 1)),
"multi" => false, /* default value */
"upsert" => false, /* default value */
);
$item2 = array(
"q" => array("is" => "working"),
"u" => array('$set' => array("try" => 2)),
"multi" => true,
);
$item3 = array(
"q" => array("created" => "new-document"),
"u" => array('$set' => array("try" => 3)),
"upsert" => true,
);
$batch = new MongoUpdateBatch($collection);
$batch->add($item1);
$batch->add($item2);
$batch->add($item3);
$batch->execute(array("w" => 1));
?>
Пример #3 MongoWriteBatch::add() example
Batching up multiple delete operations
<?php
$mc = new MongoClient("localhost");
$collection = $mc->selectCollection("test", "test");
$item1 = array(
"q" => array("my" => "demo"),
"limit" => 1,
);
$item2 = array(
"q" => array("try" => 3),
"limit" => 1,
);
$batch = new MongoDeleteBatch($collection);
$batch->add($item1);
$batch->add($item2);
$batch->execute(array("w" => 1));
?>
Вернуться к: MongoWriteBatch