MongoDB\Driver\ReadConcern::__construct
(mongodb >=1.0.0)
MongoDB\Driver\ReadConcern::__construct — Create a new ReadConcern
説明
Constructs a new MongoDB\Driver\ReadConcern, which is an immutable value object.
パラメータ
level-
The » read concern level. You may use, but are not limited to, one of the class constants.
エラー / 例外
- Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.
例
例1 MongoDB\Driver\ReadConcern::__construct() example
<?php
/* Unspecified read isolation level (uses the server's default behavior) */
$rc = new MongoDB\Driver\ReadConcern();
/* Request read isolation from a single replica set node */
$rc = new MongoDB\Driver\ReadConcern(MongoDB\Driver\ReadConcern::LOCAL);
/* Request read isolation from a majority of the replica set nodes */
$rc = new MongoDB\Driver\ReadConcern(MongoDB\Driver\ReadConcern::MAJORITY);
?>
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