MongoDB\Driver\Manager::executeQuery

(mongodb >=1.0.0)

MongoDB\Driver\Manager::executeQuery — Execute a database query

说明

final public MongoDB\Driver\Cursor MongoDB\Driver\Manager::executeQuery ( string $namespace , MongoDB\Driver\Query $query [, MongoDB\Driver\ReadPreference $readPreference ] )

Executes query on a server. If readPreference is provided, it will be used for server selection; otherwise, the default read preference will be used.

参数

namespace ( string ): A fully qualified namespace (e.g. "databaseName.collectionName").
query ( MongoDB\Driver\Query ): The MongoDB\Driver\Query to execute.
readPreference ( MongoDB\Driver\ReadPreference ): Optionally, a MongoDB\Driver\ReadPreference to select the server for this operation. If none is given, the read preference from the MongoDB Connection URI will be used.

返回值

Returns MongoDB\Driver\Cursor on success.

错误／异常

Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.
Throws MongoDB\Driver\Exception\ConnectionException if connection to the server fails (for reasons other than authentication).
Throws MongoDB\Driver\Exception\AuthenticationException if authentication is needed and fails.
Throws MongoDB\Driver\Exception\RuntimeException on other errors (e.g. invalid query operators).

范例

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 );
}

 ?>

以上例程会输出：

object(stdClass)#6 (1) {
  ["x"]=>
  int(3)
}
object(stdClass)#7 (1) {
  ["x"]=>
  int(2)
}

参见

MongoDB\Driver\Cursor
MongoDB\Driver\Query
MongoDB\Driver\ReadPreference
MongoDB\Driver\Server::executeQuery() - Execute a database query on this server