Represents an update operator that modifies a certain elements. More...

Inheritance diagram for mangrove::update_expr< NvpT, U >:

Public Member Functions
void	append_to_bson (bsoncxx::builder::core &builder, bool wrap=false) const
	Appends this query to a BSON core builder as a key-value pair "$op: {field: value}". More...

	operator bsoncxx::document::view_or_value () const
	Creates a BSON value of the form "$op: {field: value}".

Detailed Description

Represents an update operator that modifies a certain elements.

This creates BSON expressions of the form "$op: {field: value}", where $op can be $set, $inc, etc.

This class stores the value to be compared by reference. To store a temporary or computed value, use UpdateExprValue.

Template Parameters

NvpT	The type of the name-value pair
U	The type of the value being compared.

Member Function Documentation

template<typename NvpT, typename U>

void mangrove::update_expr< NvpT, U >::append_to_bson	(	bsoncxx::builder::core &	builder,
		bool	wrap = `false`
	)		const

inline

Appends this query to a BSON core builder as a key-value pair "$op: {field: value}".

Parameters

builder	A basic BSON core builder.
Whether	to wrap this expression inside a document.

The documentation for this class was generated from the following files: