Detailed Description

Class that reads and stores an Special Row in the RAM memory.

This class is the implementation of a SpecialRow that stores the cells in RAM memory. Consider that the row stored by this class is not persistent, so it is not susceptible to chekpoint restore.

Definition at line 34 of file SpecialRowRAM.hpp.

#include <SpecialRowRAM.hpp>

Inheritance diagram for SpecialRowRAM:

List of all members.

Public Member Functions
	SpecialRowRAM (int id)
	Creates a new Special Row associated to the RAM memory.
virtual	~SpecialRowRAM ()
	Dispose the RAM memory allocated to this object.
virtual void	close ()
	Does nothing.
virtual void	truncateRow (int size)
	Truncates the allocated memory.
Private Member Functions
virtual void	initialize (bool readOnly, int length)
	Allocate the initial structure for this row.
virtual int	write (const cell_t *buf, int offset, int len)
	Stores the vector in a given offset.
virtual int	read (cell_t *buf, int offset, int len)
	Stores the vector in a given offset.
Private Attributes
cell_t *	row
	Allocated memory.
int	length
	Length of the allocated memory.

Constructor & Destructor Documentation

SpecialRowRAM::SpecialRowRAM ( int id )

Creates a new Special Row associated to the RAM memory.

Parameters:

id the rowId

Definition at line 37 of file SpecialRowRAM.cpp.

SpecialRowRAM::~SpecialRowRAM ( ) [virtual]

Dispose the RAM memory allocated to this object.

Definition at line 47 of file SpecialRowRAM.cpp.

Member Function Documentation

void SpecialRowRAM::close ( ) [virtual]

Does nothing.

Implements SpecialRow.

Definition at line 58 of file SpecialRowRAM.cpp.

void SpecialRowRAM::initialize	(	bool	readOnly,
		int	length
	)		`[private, virtual]`

Allocate the initial structure for this row.

Parameters:

readOnly	true if it must be opened for read mode, false otherwise.
length	the initial size of the row in memory.

Implements SpecialRow.

Definition at line 70 of file SpecialRowRAM.cpp.

int SpecialRowRAM::read	(	cell_t *	buf,
		int	offset,
		int	len
	)		`[private, virtual]`

Stores the vector in a given offset.

It is guaranteed that the offset is serially decremented. Each subclass must implement this method with specific code.

Parameters:

buf	vector containing the cells to be read. The data read will be stored in the first byte of this vector.
offset	the position that the data must be read.
len	length of the vector.

Returns:: The number of cells read.

Implements SpecialRow.

Definition at line 107 of file SpecialRowRAM.cpp.

void SpecialRowRAM::truncateRow ( int size ) [virtual]

Truncates the allocated memory.

Parameters:

size	the number of cells to keep in the memory.

Implements SpecialRow.

Definition at line 64 of file SpecialRowRAM.cpp.

int SpecialRowRAM::write	(	const cell_t *	buf,
		int	offset,
		int	len
	)		`[private, virtual]`

Stores the vector in a given offset.

It is guaranteed that the offset is serially incremented. Each subclass must implement this method with specific code.

Parameters:

buf	vector containing the cells to be saved.
offset	the position that the vector must be stored.
len	length of the vector.

Returns:: The number of cells stored.

Implements SpecialRow.

Definition at line 91 of file SpecialRowRAM.cpp.

Member Data Documentation

int SpecialRowRAM::length [private]

Length of the allocated memory.

Definition at line 64 of file SpecialRowRAM.hpp.

cell_t* SpecialRowRAM::row [private]

Allocated memory.

Definition at line 61 of file SpecialRowRAM.hpp.

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

Detailed Description

Public Member Functions

Private Member Functions

Private Attributes

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation