DbBufStorage.H File Reference

#include <mix/wenv.h>
#include <mix/trans.h>
#include <mix/DynAr.H>
#include <mix/IntAr.H>
#include <mix/LongAr.H>
#include <ldb/DbTableTypes.H>
#include <mix/AnyAr.H>

Go to the source code of this file.

Classes
class	DbDataCluster
class	DbLineEntry
class	DbBufStorage

Macros
#define	DB_CLUSTER_START_VOLUME   20
#define	DB_CLUSTER_DEFAULT_QUANT   20
#define	DB_CLUSTER_LIMIT_SIZE   (200*1024) /* 200K */
#define	AnyAr   DbLineEntries
#define	AnyType   DbLineEntry
#define	AnyFormatSpec   "\n\t%d: %s, %s, data location=(%p %u), access id=%u"
#define	AnyPrintList
#define	AnyPrintf   fprintf(stderr,
#define	AnyAr   DbDataClusters
#define	AnyType   DbDataClusterPtr
#define	AnyPrintItem   item->print_self()

Typedefs
typedef DbDataCluster *	DbDataClusterPtr
typedef UIntAr	DbIndexAr

Detailed Description

ÁàÕÔáâÒÐ ßÞ àÐÑÞâÕ á âÐÑÛØæÕÙ »±´ Ò ÞßÕàÐâØÒÝÞÙ ßÐÜïâØ ÝÐ ÝØÖÝÕÜ ãàÞÒÝÕ. ¾ÑÕáßÕçØÒÐÕâ ÔÞáâãß Ø åàÐÝÕÝØÕ ÜÐááØÒÐ áâàÞÚ âÐÑÛØæë. ¾ÑÛÐÔÐÕâ áÛÕÔãîéØÜØ áÒÞÙáâÒÐÜØ:

1. áâàÞÚØ âÐÑÛØæë ÜÞÓãâ åàÐÝØâìáï Ò àÐ×ÛØçÝëå ÞÑÛÐáâïå ßÐÜïâØ, âÞ åàÐÝØÛØéÕ ØÜÕÕâ ÝÕ ÛØÝÕÙÝãî, Ð ÚÛÐáâÕàÝãî áßØáÚÞÒãî áâàãÚâãàã.
2. áâàÞÚØ âÐÑÛØæë ÜÞÓãâ Ñëâì ßÞÜÕçÕÝë ÚÐÚ ÞâáãâáâÒãîéØÕ Ò ßÐÜïâØ (ÝÕ ßàÞçØâÐÝë á ÔØáÚÐ), ÚÐÚ ÜÞÔØäØæØàÞÒÐÝÝëÕ ßÞÛì×ÞÒÐâÕÛÕÜ (Øå áÞÔÕàÖØÜÞÕ ÝÐ ÔØáÚÕ ãáâÐàÕÛÞ).
3. ÚÐÖÔÐï áâàÞÚÐ ßàØáãâáâÒãîéÐï Ò ßÐÜïâØ áâàÞÚÐ ØÜÕÕâ ØÔÕÝâØäØÚÐâÞà ßÞáÛÕÔÝÕÙ ÞßÕàÐæØØ á ÝÕÙ, çâÞ ÔÐÕâ ÒÞ×ÜÞÖÝÞáâì ßÞ ÜÕàÕ ÝÐÔÞÑÝÞáâØ ÒëÓàãÖÐâì ÝÕÚÞâÞàëÕ áâàÐÝØæë Ø× ßÐÜïâØ, ÚÞÝâàÞÛØàãï âÐÚØÜ áßÞáÞÑÞÜ ÞÑêÕÜ ÑãäÕàÝÞÙ ßÐÜïâØ, ØáßÞÛì×ãÕÜÞÙ ÞÔÝÞÙ âÐÑÛØæÕÙ ØÛØ ÒáÕÜØ ÞâÚàëâëÜØ âÐÑÛØæÐÜØ ÔÐÝÝëå.

½ÞÜÕà áâàÞÚØ Ò âÐÑÛØæÕ ±´ ÞâáçØâëÒÐÕâáï Þâ 0 Ø ÔÞÛÖÕÝ Ñëâì ßÞÛÞÖØâÕÛìÝëÜ. ´ÞßãáÚÐÕâáï ØáßÞÛì×ÞÒÐâì last Ø× DynAr.H ÔÛï ÔÞáâãßÐ Ú ßÞáÛÕÔÝÕÙ áâàÞÚÕ âÐÑÛØæë.

Macro Definition Documentation

#define AnyAr   DbLineEntries

¼ÐááØÒ íÛÕÜÕÝâÞÒ-ÞßØáÐâÕÛÕÙ áâàÞÚ âÐÑÛØæë »±´.

#define AnyAr   DbDataClusters

¼ÐááØÒ íÛÕÜÕÝâÞÒ-ÞßØáÐâÕÛÕÙ áâàÞÚ âÐÑÛØæë »±´.

#define AnyPrintList

Value:

i, item.get_loaded()? "loaded": "not loaded", \
            item.get_changed()? "changed": "not changed", \
            item.pDataClu, item.iLocalIndex, item.iAccessId

#define DB_CLUSTER_DEFAULT_QUANT   20

ºÞÛØçÕáâÒÞ íÛÕÜÕÝâÞÒ ÔÐÝÝëå, ÒëÔÕÛïÕÜëå ÚÛÐáâÕàÞÜ Ò âÞÜ áÛãçÐÕ, ÚÞÓÔÐ ÝÐÔÞ ÒëÔÕÛØâì ßÐÜïâì âÞÛìÚÞ ÔÛï ÞÔÝÞÓÞ.

#define DB_CLUSTER_LIMIT_SIZE   (200*1024) /* 200K */

¿àÕÔÕÛìÝëÙ àÐ×ÜÕà ÚÛÐáâÕàÐ (Ò áÜëáÛÕ DbBufStorage::max_lines_in_cluster) Ò ÑÐÙâÐå, ÞÑÕáßÕçØÒÐîéØÙ íääÕÚâØÒÝÞÕ (íÚÞÝÞÜÝÞÕ Ø ÑëáâàÞÕ) ØáßÞÛì×ÞÒÐÝØÕ ßÐÜïâØ.

#define DB_CLUSTER_START_VOLUME   20

ºÞÛØçÕáâÒÞ íÛÕÜÕÝâÞÒ ÔÐÝÝëå, ßÞÔ ÚÞâÞàëÕ ÒëÔÕÛïÕâáï ßÐÜïâì Ò ÚÛÐáâÕàÕ ßÞ ãÜÞÛçÐÝØî.

Typedef Documentation

typedef DbDataCluster* DbDataClusterPtr

¼ÐááØÒ ÚÛÐáâÕàÞÒ ÔÐÝÝëå.

typedef UIntAr DbIndexAr

¼ÐááØÒ ØÝÔÕÚáÞÒ áâàÞÚ.