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- MongoDB\ChangeStream::rewind()
MongoDB\ChangeStream::rewind()
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Definition
-
MongoDB\ChangeStream::rewind Rewinds the change stream and attempts to load the first event.
This method should be called at the start of change stream iteration.
Note
Rewinding the change stream does not guarantee that there will be a current event to access. You should still call
MongoDB\ChangeStream::valid()to check for a current event at each step of iteration. After initially rewinding the change stream,MongoDB\ChangeStream::next()should be used to iterate further.
Errors/Exceptions
MongoDB\Driver\Exception\LogicException if this method is called after a call
to MongoDB\ChangeStream::next() (i.e. the underlying
MongoDB\Driver\Cursor has already been
advanced).
MongoDB\Driver\Exception\RuntimeException for other errors at the driver level (e.g. connection errors).
See Also
MongoDB\Client::watch()MongoDB\Collection::watch()MongoDB\Database::watch()- Iterator::rewind()
- Tailable Cursor Iteration
- Change Streams documentation in the MongoDB manual