(mongodb >=1.0.0)
MongoDB\Driver\Manager::executeQuery — Execute a database query
$namespace
, MongoDB\Driver\Query $query
, array $options
= array()
) : MongoDB\Driver\Cursor
Selects a server according to the "readPreference"
option
and executes the query on that server. By default, the read preference from
the MongoDB Connection
URI will be used.
namespace
(string)
Un spațiu de nume complet calificat (de ex. "databaseName.collectionName"
).
query
(MongoDB\Driver\Query)Interpelarea spre a fi executată.
options
Option | Type | Description |
---|---|---|
readPreference | MongoDB\Driver\ReadPreference |
Preferința de citire pentru a fi folosită la selectarea serverului pentru operațiune. |
session | MongoDB\Driver\Session |
O sesiune pentru a fi asociată cu operațiunea. |
Întoarce MongoDB\Driver\Cursor în caz de succes.
Versiune | Descriere |
---|---|
PECL mongodb 1.4.0 |
The third parameter is now an options array.
For backwards compatibility, this paramater will still accept a
MongoDB\Driver\ReadPreference object.
|
Example #1 MongoDB\Driver\Manager::executeQuery() example
<?php
$manager = new MongoDB\Driver\Manager("mongodb://localhost:27017");
$bulk = new MongoDB\Driver\BulkWrite;
$bulk->insert(['x' => 1]);
$bulk->insert(['x' => 2]);
$bulk->insert(['x' => 3]);
$manager->executeBulkWrite('db.collection', $bulk);
$filter = ['x' => ['$gt' => 1]];
$options = [
'projection' => ['_id' => 0],
'sort' => ['x' => -1],
];
$query = new MongoDB\Driver\Query($filter, $options);
$cursor = $manager->executeQuery('db.collection', $query);
foreach ($cursor as $document) {
var_dump($document);
}
?>
Exemplul de mai sus va afișa:
object(stdClass)#6 (1) { ["x"]=> int(3) } object(stdClass)#7 (1) { ["x"]=> int(2) }
Example #2 Limiting execution time for a query
The "maxTimeMS"
MongoDB\Driver\Query option may be used to limit the
execution time of a query. Note that this time limit is enforced on the
server side and does not take network latency into account. See
» Terminate Running Operations
in the MongoDB manual for more information.
<?php
$manager = new MongoDB\Driver\Manager('mongodb://localhost:27017');
$filter = ['x' => ['$gt' => 1]];
$options = [
'maxTimeMS' => 1000,
];
$query = new MongoDB\Driver\Query($filter, $options);
$cursor = $manager->executeQuery('db.collection', $query);
foreach ($cursor as $document) {
var_dump($document);
}
?>
If the query fails to complete after one second of execution time on the server, a MongoDB\Driver\Exception\ExecutionTimeoutException will be thrown.