Class representing a MongoDB change stream iterator. More...

#include <change_stream.hpp>

Public Member Functions
	iterator ()
	Default-construct an iterator.

const bsoncxx::v_noabi::document::view &	operator* () const
	Dereferences the view for the document currently being pointed to.

const bsoncxx::v_noabi::document::view *	operator-> () const
	Accesses a member of the dereferenced document currently being pointed to.

iterator &	operator++ ()
	Pre-increments the iterator to move to the next document.

void	operator++ (int)
	Post-increments the iterator to move to the next document.

Detailed Description

Class representing a MongoDB change stream iterator.

Constructor & Destructor Documentation

◆ iterator()

mongocxx::v_noabi::change_stream::iterator::iterator ( )

Default-construct an iterator.

Default-constucted iterators can be compared (all default-constructed iterators are ==), assigned, and copied.

Member Function Documentation

◆ operator*()

const bsoncxx::v_noabi::document::view & mongocxx::v_noabi::change_stream::iterator::operator* ( ) const

Dereferences the view for the document currently being pointed to.

The returned document::view is valid until the iterator is incremented. The value may be copied to extend its lifetime.

◆ operator++() [1/2]

iterator & mongocxx::v_noabi::change_stream::iterator::operator++ ( )

Pre-increments the iterator to move to the next document.

change_stream::begin() and increment operators may block if the current batch of documents is exhausted. They will not return until a notification is available, the max_await_time (from the options::change_stream) milliseconds have elapsed, or a server error is encountered.

If no notification is available, callers may call change_stream::begin() to check for more notifications.

Exceptions

mongocxx::v_noabi::query_exception if the query failed

◆ operator++() [2/2]

void mongocxx::v_noabi::change_stream::iterator::operator++ ( int )

Post-increments the iterator to move to the next document.

change_stream::begin() and increment operators may block if the current batch of documents is exhausted. They will not return until a notification is available, the max_await_time (from the options::change_stream) milliseconds have elapsed, or a server error is encountered.

If no notification is available, callers may call change_stream::begin() to check for more notifications.

Exceptions

mongocxx::v_noabi::query_exception if the query failed

◆ operator->()

const bsoncxx::v_noabi::document::view * mongocxx::v_noabi::change_stream::iterator::operator-> ( ) const

Accesses a member of the dereferenced document currently being pointed to.

The returned document::view is valid until the iterator is incremented. The value may be copied to extend its lifetime.

Friends And Related Symbol Documentation

◆ operator!=

bool operator!=	(	const change_stream::iterator &	,
		const change_stream::iterator &
	)

friend

Compare two iterators for (in)-equality.

Iterators compare equal if they point to the same underlying change_stream or if both are exhausted.

◆ operator==

bool operator==	(	const change_stream::iterator &	,
		const change_stream::iterator &
	)