Cache Class Reference

Cache to store raw tile data. More...

#include <Cache.h>

Public Member Functions
	Cache (const float max)
	Constructor.
	~Cache ()
	Destructor.
void	clear ()
	Empty the cache.
void	insert (const RawTile &r)
	Insert a tile.
unsigned int	getNumElements () const
	Return the number of tiles in the cache.
float	getMemorySize () const
	Return the number of MB stored.
RawTile *	getTile (const std::string &f, int r, int t, int h, int v, CompressionType c, int q)
	Get a tile from the cache.
std::string	getIndex (const std::string &f, int r, int t, int h, int v, CompressionType c, int q) const
	Create a hash index.

Detailed Description

Cache to store raw tile data.

Constructor & Destructor Documentation

Cache()

Cache::Cache ( const float  max )

inline

Constructor.

Parameters

max	Maximum cache size in MB

Member Function Documentation

getIndex()

std::string Cache::getIndex ( const std::string &  f, int  r, int  t, int  h, int  v, CompressionType  c, int  q  ) const

inline

Create a hash index.

Parameters

f	filename
r	resolution number
t	tile number
h	horizontal sequence number
v	vertical sequence number
c	compression type
q	compression quality

Returns

string

Referenced by getTile(), and insert().

getTile()

RawTile * Cache::getTile ( const std::string &  f, int  r, int  t, int  h, int  v, CompressionType  c, int  q  )

inline

Get a tile from the cache.

Parameters

f	filename
r	resolution number
t	tile number
h	horizontal sequence number
v	vertical sequence number
c	compression type
q	compression quality

Returns

pointer to data or NULL on error

References getIndex().

insert()

void Cache::insert ( const RawTile &  r )

inline

Insert a tile.

Parameters

r	Tile to be inserted

References RawTile::compressionType, RawTile::dataLength, RawTile::filename, getIndex(), RawTile::hSequence, RawTile::quality, RawTile::resolution, RawTile::tileNum, RawTile::timestamp, and RawTile::vSequence.

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

• Cache.h