MongoDB C++ Driver  mongocxx-3.0.1
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bsoncxx::array::value Class Reference

A read-only BSON array that owns its underlying buffer. More...

#include <value.hpp>

Public Member Functions

 value (std::uint8_t *data, std::size_t length, deleter_type dtor)
 Constructs a value from a buffer. More...
 
 value (unique_ptr_type ptr, std::size_t length)
 Constructs a value from a std::unique_ptr to a buffer. More...
 
 value (array::view view)
 Constructs a value from a view of an array. More...
 
array::view view () const noexcept
 Get a view over the document owned by this value.
 
 operator array::view () const noexcept
 Conversion operator that provides a view given a value. More...
 
unique_ptr_type release ()
 Transfer ownership of the underlying buffer to the caller. More...
 

Detailed Description

A read-only BSON array that owns its underlying buffer.

When a array::value goes out of scope, the underlying buffer is freed. Generally this class should be used sparingly; array::view should be used instead wherever possible.

Constructor & Destructor Documentation

bsoncxx::array::value::value ( std::uint8_t *  data,
std::size_t  length,
deleter_type  dtor 
)

Constructs a value from a buffer.

This constructor transfers ownership of the buffer to the resulting value. A user-provided deleter is used to destroy the buffer.

Parameters
dataA pointer to a buffer containing a valid BSON array.
lengthThe length of the document.
dtorA user provided deleter.
bsoncxx::array::value::value ( unique_ptr_type  ptr,
std::size_t  length 
)

Constructs a value from a std::unique_ptr to a buffer.

The ownership of the buffer is transferred to the resulting value.

Parameters
ptrA pointer to a buffer containing a valid BSON array.
lengthThe length of the document.
bsoncxx::array::value::value ( array::view  view)
explicit

Constructs a value from a view of an array.

The data referenced by the array::view will be copied into a new buffer managed by the constructed value.

Parameters
viewA view of another array to copy.

Member Function Documentation

bsoncxx::array::value::operator array::view ( ) const
noexcept

Conversion operator that provides a view given a value.

Returns
A view over the value.
unique_ptr_type bsoncxx::array::value::release ( )

Transfer ownership of the underlying buffer to the caller.

Warning
After calling release() it is illegal to call any methods on this class, unless it is subsequently moved into.
Returns
A std::unique_ptr with ownership of the buffer.

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