21 #include <mongocxx/gridfs/bucket-fwd.hpp>
22 #include <mongocxx/gridfs/downloader-fwd.hpp>
24 #include <bsoncxx/document/value.hpp>
25 #include <bsoncxx/document/view.hpp>
26 #include <bsoncxx/stdx/optional.hpp>
27 #include <bsoncxx/types/bson_value/view.hpp>
28 #include <mongocxx/cursor.hpp>
29 #include <mongocxx/stdx.hpp>
31 #include <mongocxx/config/prelude.hpp>
41 std::int32_t chunks_offset = 0;
42 std::int32_t bytes_offset = 0;
80 explicit operator
bool() const noexcept;
102 std::
size_t read(std::uint8_t* buffer, std::
size_t length);
160 std::int64_t file_len,
161 bsoncxx::v_noabi::document::value files_doc);
163 MONGOCXX_PRIVATE
void fetch_chunk();
165 class MONGOCXX_PRIVATE impl;
167 MONGOCXX_PRIVATE impl& _get_impl();
168 MONGOCXX_PRIVATE const impl& _get_impl() const;
170 std::unique_ptr<impl> _impl;
178 #if defined(MONGOCXX_TEST_MACRO_GUARDS_FIX_MISSING_POSTLUDE)
179 #include <mongocxx/config/postlude.hpp>
Class representing a pointer to the result set of a query on a MongoDB server.
Definition: cursor.hpp:42
Class representing a GridFS bucket.
Definition: bucket.hpp:63
Class used to download a GridFS file.
Definition: downloader.hpp:48
downloader() noexcept
Default constructs a downloader object.
bsoncxx::v_noabi::document::view files_document() const
Gets the files collection document of the file being downloaded.
std::int32_t chunk_size() const
Gets the chunk size of the file being downloaded.
void close()
Closes the downloader stream.
std::size_t read(std::uint8_t *buffer, std::size_t length)
Reads a specified number of bytes from the GridFS file being downloaded.
std::int64_t file_length() const
Gets the length of the file being downloaded.
The top-level namespace for bsoncxx library entities.
Definition: element-fwd.hpp:19
The top-level namespace for mongocxx library entities.
Definition: bulk_write-fwd.hpp:19
Class used to specify the offset from which to start reading the chunks of the file.
Definition: downloader.hpp:40