SS_Table Class Reference

Represents an SSTable (Sorted String Table) used in the LSM Tree. More...

#include <sstable.hpp>

Public Member Functions
	SS_Table (const std::string &filename)
	Constructs an SS_Table from a given filename (excluding extensions).
	SS_Table (const std::string &index_filename, const std::string &data_filename)
	Constructs an SS_Table from existing index and data filenames.
bool	loadIndex ()
	Loads the SSTable index from the index file.
std::pair< bool, std::string >	getValue (std::string key)
	Retrieves the value associated with a key from the SSTable.
std::string	getIndexFile () const
	Gets the filename of the SSTable's index file.
std::string	getDataFilename () const
	Gets the filename of the SSTable's data file.

Static Public Member Functions
static bool	createFromMemTable (const std::string &filename, MemTable *memTable)
	Creates an SSTable from a given MemTable.

Detailed Description

Represents an SSTable (Sorted String Table) used in the LSM Tree.

This class handles persistent storage of key-value pairs by writing data in a structured format. It provides functions for loading indexes, retrieving values, and managing SSTable files.

Constructor & Destructor Documentation

SS_Table() [1/2]

SS_Table::SS_Table ( const std::string & filename )

inline

Constructs an SS_Table from a given filename (excluding extensions).

Parameters

filename

Base name for the SSTable (without extensions).

SS_Table() [2/2]

SS_Table::SS_Table ( const std::string & index_filename, const std::string & data_filename )

inline

Constructs an SS_Table from existing index and data filenames.

Parameters

index_filename	Path to the index file.
data_filename	Path to the data file.

Member Function Documentation

createFromMemTable()

bool SS_Table::createFromMemTable ( const std::string & filename, MemTable * memTable )

inlinestatic

Creates an SSTable from a given MemTable.

Parameters

filename	Base filename for the new SSTable (without extensions).
memTable	Pointer to the MemTable containing data.

Returns

True if creation is successful, otherwise false.

getDataFilename()

std::string SS_Table::getDataFilename ( ) const

inline

Gets the filename of the SSTable's data file.

Returns

The data file's name.

getIndexFile()

std::string SS_Table::getIndexFile ( ) const

inline

Gets the filename of the SSTable's index file.

Returns

The index file's name.

getValue()

std::pair< bool, std::string > SS_Table::getValue ( std::string key )

inline

Retrieves the value associated with a key from the SSTable.

Parameters

key	The key to look up.

Returns

A pair containing a boolean (indicating success) and the value.

loadIndex()

bool SS_Table::loadIndex ( )

inline

Loads the SSTable index from the index file.

Returns

True if the index is successfully loaded, otherwise false.

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

• src/engine/sstable.hpp