MongoDB\Driver\CursorInterface::isDead

(mongodb >=1.6.0)

MongoDB\Driver\CursorInterface::isDead — Checks if the cursor may have additional results

説明

abstract public function MongoDB\Driver\CursorInterface::isDead(): bool

Checks whether the cursor may have additional results available to read. A cursor is initially "alive" but may become "dead" for any of the following reasons:

Advancing a non-tailable cursor did not return a document
The cursor encountered an error
The cursor read its last batch to completion
The cursor reached its configured limit

This is primarily useful with tailable cursors.

パラメータ

この関数にはパラメータはありません。

戻り値

Returns true if additional results are not available, and false otherwise.

エラー / 例外

Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.

参考

MongoDB\Driver\Cursor::isDead() - Checks if the cursor is exhausted or may have additional results

関連キーワード:

cursor MongoDB Driver results CursorInterface Checks isDead available read tailable getServer setTypeMap mongodb abstract whether initially alive become dead following reasons Advancing return document encountered