(mongodb >=1.0.0)
MongoDB\Driver\Manager::executeQuery — Execute a database query
$namespace, MongoDB\Driver\Query $query, array|MongoDB\Driver\ReadPreference|null $options = null): MongoDB\Driver\Cursor
Selects a server according to the "readPreference" option
and executes the query on that server.
Default values for the "readPreference" option and Query's
"readConcern" option will be inferred from an active
transaction (indicated by the "session" option), followed
by the connection URI.
namespace (string)
Um namespace totalmente qualificado (por exemplo, "nomeDoBancoDados.nomeDaColecao").
query (MongoDB\Driver\Query)A consulta a ser executada.
options
| Option | Type | Description |
|---|---|---|
| readPreference | MongoDB\Driver\ReadPreference |
Uma preferência de leitura a ser usada para selecionar um servidor para a operação. |
| session | MongoDB\Driver\Session |
Uma sessão para associar à operação. |
Retorna MongoDB\Driver\Cursor em caso de sucesso.
| Versão | Descrição |
|---|---|
| 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.
|
Exemplo #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);
}
?>O exemplo acima produzirá:
object(stdClass)#6 (1) {
["x"]=>
int(3)
}
object(stdClass)#7 (1) {
["x"]=>
int(2)
}
Exemplo #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.