文字
MongoDB\Driver\Query::__construct
(mongodb >=1.0.0)
MongoDB\Driver\Query::__construct — Construct new Query
说明
final public MongoDB\Driver\Query::__construct
( array|object
$filter
[, array $queryOptions
] )
参数
-
filter( array|object ) -
The search filter.
-
queryOptions -
queryOptions Option Type Description limit integer The number of documents to be returned batchSize integer The number of documents to return per batch skip integer The number of documents to skip before returning sort array|object The order in which to return matching documents modifiers array Meta operators modifying the output or behavior of a query projection array|object Specifies the fields to return using booleans or projection operators tailable bool Cursor will not be closed when the last data is retrieved. You can resume this cursor later slaveOk bool Allow query of replica set secondaries oplogReplay bool Internal MongoDB Server flag noCursorTimeout bool Do not timeout a cursor that has been idle for more then 10minutes awaitData bool Block rather than returning no data. After a period, time out. Useful for tailable cursor exhaust bool Stream the data down full blast in multiple "reply" packets. Faster when you are pulling down a lot of data and you know you want to retrieve it all partial bool Get partial results from mongos if some shards are down (instead of throwing an error)
错误／异常
- Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.
范例
Example #1 MongoDB\Driver\Query::__construct() example
<?php
$filter = array();
$options = array(
"projection" => array(
"title" => 1 ,
"article" => 1 ,
),
"sort" => array(
"views" => - 1 ,
),
"modifiers" => array(
'$comment' => "This is a query comment" ,
'$maxTimeMS' => 100 ,
),
);
$query = new MongoDB \ Driver \ Query ( $filter , $options );
$manager = new MongoDB \ Driver \ Manager ( "mongodb://localhost:27017" );
$readPreference = new MongoDB \ Driver \ ReadPreference ( MongoDB \ Driver \ ReadPreference :: RP_PRIMARY );
$cursor = $manager -> executeQuery ( "databaseName.collectionName" , $query , $readPreference );
foreach( $cursor as $document ) {
var_dump ( $document );
}
?> 参见
- MongoDB\Driver\Manager::executeQuery() - Execute a database query
- MongoDB\Driver\Cursor
- » MongoDB Query Modifiers