duckdb::TemporaryFileHandle Class Reference

Collaboration diagram for duckdb::TemporaryFileHandle:

Classes
struct	TemporaryFileLock

Public Member Functions
	TemporaryFileHandle (TemporaryFileManager &manager, TemporaryFileIdentifier identifier, idx_t temp_file_count)
TemporaryFileIndex	TryGetBlockIndex (idx_t block_header_size)
	Try to get an index of where to write in this file. Returns an invalid index if full.
void	EraseBlockIndex (block_id_t block_index)
	Remove block index from this TemporaryFileHandle.
unique_ptr< FileBuffer >	ReadTemporaryBuffer (QueryContext context, const TemporaryFileIndex &index_in_file, unique_ptr< FileBuffer > reusable_buffer) const
	Read/Write temporary buffers at given positions in this file (potentially compressed)
void	WriteTemporaryBuffer (FileBuffer &buffer, idx_t block_index, AllocatedData &compressed_buffer) const
bool	DeleteIfEmpty ()
	Deletes the file if there are no more blocks.
bool	IsEncrypted () const
TemporaryFileInformation	GetTemporaryFile ()
	Get information about this temporary file.

Private Member Functions
void	CreateFileIfNotExists (TemporaryFileLock &)
	Create temporary file if it did not exist yet.
void	RemoveTempBlockIndex (TemporaryFileLock &, idx_t index)
	Remove block index from this file.
idx_t	GetPositionInFile (idx_t index) const
	Get the position of a block in the file.

Private Attributes
DatabaseInstance &	db
	Reference to the DB instance.
const TemporaryFileIdentifier	identifier
	The identifier (size/file index) of this TemporaryFileHandle.
const idx_t	max_allowed_index
	The maximum allowed index.
const string	path
	File path/handle.
unique_ptr< FileHandle >	handle
mutex	file_lock
	Lock for concurrent access and block index manager.
BlockIndexManager	index_manager

Static Private Attributes
static constexpr idx_t	MAX_ALLOWED_INDEX_BASE = 4000

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

• external/duckdb/duckdb.cpp