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NCBI C++ ToolKit: include/db/bdb/bdb_cursor.hpp Source File

1 #ifndef BDB___CURSOR_HPP__ 2 #define BDB___CURSOR_HPP__ 149 void

InitMultiFetch(

size_t

buffer_size, EMultiFetchMode mfm = eFetchAll);

157 void

SetCondition(ECondition cond_from, ECondition cond_to =

eNotSet

);

159 void

SetFetchDirection(EFetchDirection fdir);

161

EFetchDirection GetReverseFetchDirection()

const

;

162 void

ReverseFetchDirection();

208 const void

* GetLastMultiFetchData()

const

;

212 size_t

GetLastMultiFetchDataLen()

const

;

215

TRecordCount KeyDupCount()

const

;

233 bool

IsOpen()

const

;

237 bool

TestTo()

const

;

240 void

ResetFirstFetched();

260 void

x_FetchFirst_Prolog(

unsigned int

& flag);

BDB Data Field Buffer manager class.

File cursor condition handle.

Internal class used by CBDB_FileCursor to represent search condition criteries.

Berkeley DB file cursor class.

Multirow buffer for reading many rows in one call.

Reallocable memory buffer (no memory copy overhead) Mimics vector<>, without the overhead of explicit...

BDB Data Field conversion interface definition.

CNcbiOstream & operator<<(CNcbiOstream &out, const CEquivRange &range)

IBDB_FieldConvert & GetFieldConvert(CBDB_BufferManager &buf, unsigned int n)

Return next field's IBDB_FieldConvert interface (hidden cast to non-public parent class)

CBDB_CursorGuard(CBDB_FileCursor &cur)

CBDB_CursorGuard & operator=(const CBDB_CursorGuard &)

bool m_FirstFetched

Flag if FetchFirst is already been done.

unsigned long TRecordCount

bool m_LastMultiFetchSuccess

when true, last multifetch was successfull

void SetFetchDirection(EFetchDirection fdir)

CBDB_FC_Condition & m_Condition

CBDB_FileCursor(const CBDB_FileCursor &)

forbidden

EFetchDirection GetReverseFetchDirection() const

unsigned int m_FetchFlags

Type of locking (conventional or RMW)

ECondition m_CondTo

To condition proxy-object.

ECursorUpdateType

Type of locking when fetching records.

EMultiFetchMode

Fetch mode regulates multi-row fetches eFetchAll (default mode) when buffer ends, cursor automaticall...

CBDB_MultiRowBuffer * m_MultiRowBuf

Buffer class for multiple fetch.

EFetchDirection GetFetchDirection() const

void Close()

Close underlying cursor.

EReallocMode

BLOB read mode, controld data buffer reallocation when there is not enough space in buffer.

EFetchDirection m_FetchDirection

Fetch direction (forward/backward)

EMultiFetchMode m_MultiFetchMode

Multifetch control mode.

CBDB_File & m_Dbf

Reference on the "mother" file.

EBDB_ErrCode

BDB Return codes.

void ResetFirstFetched()

Set m_FirstFetched field to FALSE.

ECondition m_CondFrom

From condition proxy-object.

void ReverseFetchDirection()

CBDB_ConditionHandle From

CBDB_CursorGuard(CBDB_CursorGuard &)

CBDB_File & GetDBFile()

Return database file on which cursor is based.

DBC * m_DBC

Berkeley DB DBC thing.

@ eDiscardData

Invalidate the inserted data immediately after write.

@ eReadUpdate

Default mode: optional update after read.

#define END_NCBI_SCOPE

End previously defined NCBI scope.

#define BEGIN_NCBI_SCOPE

Define ncbi namespace.

const struct ncbi::grid::netcache::search::fields::SIZE size

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